Service Manual
[General]
CF5001
Download from Www.Somanuals.com. All Manuals Search And Download.
CONTENTS
CF5001 Ver.1.0 Sep. 2003
6.11 2nd transfer roller /L cleaning (Sub step 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
6.12 Toner collection (Sub step 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
6.13 Process speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
II UNIT EXPLANATION
1. SCANNER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
1.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
1.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.1 Home position search in the exposure unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.2 Shading correction reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1.2.3 Original reading mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
1.2.4 Original reading control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
1.2.5 APS control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
1.2.6 AE control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
1.2.7 Image processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2. WRITE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2.2.1 Image writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2.2.2 Color registration correction control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3. DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
3.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
3.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
3.2.1 Image formation timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
4. DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
4.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
4.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
4.2.1 Flow of developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
4.2.2 Developing control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
4.2.3 Toner supply control to the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
4.2.4 Developing bias control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
4.2.5 Durability of the developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
5. TRANSFER BELT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
5.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
5.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
5.2.1 Transfer belt pressure/release mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
5.2.2 Image correction unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
5.2.3 1st transfer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
5.2.4 2nd transfer control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
6. TONER SUPPLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
6.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
6.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
6.2.1 Toner supply control to the toner hopper section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
6.2.2 Toner supply control to the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
6.2.3 Copy/print operation stop control due to no toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
7. TONER COLLECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
7.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
ii
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
CONTENTS
7.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
7.2.1 Toner collection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
7.2.2 Waste toner full detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
8. PAPER FEED TRAY /1 TO /3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
8.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
8.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
8.2.1 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
8.2.2 Up/down plate control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
8.2.3 Remaining paper detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
8.2.4 Paper size detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
9. BY-PASS FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
9.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
9.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
9.2.1 Tray up drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
9.2.2 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
9.2.3 Paper size detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
10.VERTICAL CONVEYANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
10.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
10.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
10.2.1 Vertical conveyance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
11. REGISTRATION/ADU/REVERSE/PAPER EXIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
11.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
11.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
11.2.1 Switching control of the paper exit/ADU conveyance path. . . . . . . . . . . . . . . . . . . . . . . . . 2-49
11.2.2 Reverse/exit control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
11.2.3 ADU conveyance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
11.2.4 Paper reverse control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55
11.2.5 ADU pre-registration control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
11.2.6 Registration control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
11.2.7 2nd transfer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
11.2.8 Paper exit full detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
12.FIXING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
12.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
12.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
12.2.1 Fixing drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
12.2.2 Pressure/release control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63
12.2.3 Web control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
12.2.4 Temperature control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
13.INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65
13.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65
14.IMAGE STABILIZATION CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
14.1 Toner density control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
14.2 Dmax control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
14.3 Charging potential control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67
14.3.1 Correction of the reference value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67
14.3.2 Low humidity environment correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67
14.4 Dot diameter adjustment control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
iii
Download from Www.Somanuals.com. All Manuals Search And Download.
CONTENTS
CF5001 Ver.1.0 Sep. 2003
14.5 Gamma correction control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
15.OTHER CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69
15.1 Parts to which power is supplied even when the reset switch is turned off . . . . . . . . . . . . . . . . . 2-69
15.2 Parts that operate only when the power switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
15.2.1 Parts that operate when the reset switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
15.2.2 Parts that operate when the main switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
15.3 Fan control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
15.3.1 Fan composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
15.4 Operation board control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
15.4.1 Operation board composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
15.5 Counter control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
15.5.1 Counter composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
15.5.2 Counter operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
15.6 ACS control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
15.6.1 Switching between the color mode and the black and white mode . . . . . . . . . . . . . . . . . . 2-75
15.6.2 Copy count when using ACS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
iv
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY AND IMPORTANT WARNING ITEMS
Read carefully the Safety and Important Warning Items described below to understand them before doing ser-
vice work.
IMPORTANT NOTICE
Because of possible hazards to an inexperienced person servicing this copier as well as the risk of damage to
the copier, Minolta Corporation strongly recommends that all servicing be performed only by Minolta-trained ser-
vice technicians.
Changes may have been made to this copier to improve its performance after this Service manual was printed.
Accordingly, Minolta Corporation does not warrant, either explicitly or implicitly, that the information contained in
this Service manual is complete and accurate.
The user of this Service manual must assume all risks of personal injury and/or damage to the copier while ser-
vicing the copier for which this Service manual is intended.
Therefore, this Service manual must be carefully read before doing service work both in the course of technical
training and even after that, for performing maintenance and control of the copier properly.
Keep this Service manual also for future service.
DESCRIPTION ITEMS FOR DANGER, WARNING AND
CAUTION
In this Service manual, each of three expressions “ DANGER”, “ WARNING”, and “ CAUTION” is defined
as follows together with a symbol mark to be used in a limited meaning.
When servicing the copier, the relevant works (disassembling, reassembling, adjustment, repair, maintenance,
etc.) need to be conducted with utmost care.
DANGER :Action having a high possibility of suffering death or serious injury
WARNING:Action having a possibility of suffering death or serious injury
CAUTION :Action having a possibility of suffering a slight wound, medium trouble, and
property damage
Symbols used for safety and important warning items are defined as follows:
:Precaution when using the copier.
General precaution
General prohibition
General instruction
Electric hazard
High temperature
:Prohibition when using the copier.
:Direction when using the copier.
Do not touch with wet hand Do not disassemble
Unplug
Ground/Earth
S-1
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY WARNINGS
1.
MODIFICATIONS NOT AUTHORIZED BY MINOLTA
Minolta copiers are renowned for their high reliability. This reliability is achieved through high-quality design and
a solid service network.
Copier design is a highly complicated and delicate process where numerous mechanical, physical, and electrical
aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors. For
this reason, unauthorized modifications involve a high risk of degradation in performance and safety. Such mod-
ifications are therefore strictly prohibited. the points listed below are not exhaustive, but they illustrate the rea-
soning behind this policy.
DANGER : PROHIBITED ACTIONS
• Using any cables or power cord not specified by Minolta.
• Using any fuse or thermostat not specified by Minolta. Safety will not be
assured, leading to a risk of fire and injury.
• Disabling fuse functions or bridging fuse terminals with wire, metal clips, sol-
der or similar object.
• Disabling relay functions (such as wedging paper between relay contacts)
• Disabling safety functions (interlocks, safety circuits, etc.) Safety will not be
assured, leading to a risk of fire and injury.
• Making any modification to the copier unless instructed by Minolta.
• Using parts not specified by Minolta.
S-2
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
2.
CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE
Minolta copiers are extensively tested before shipping, to ensure that all applicable safety standards are met, in
order to protect the customer and customer engineer (hereafter called the CE) from the risk of injury. However,
in daily use, any electrical equipment may be subject to parts wear and eventual failure. In order to maintain
safety and reliability, the CE must perform regular safety checks.
2.1 Power Supply
WARNING: Wall Outlet
• Check that main voltage is as specified. Plug the power cord into the dedi-
cated wall outlet with a capacity greater than the maximum power consump-
tion.
kw
If excessive current flows in the wall outlet, fire may result.
• If two or more power cords can be plugged into the wall outlet, the total load
must not exceed the rating of the wall outlet.
If excessive current flows in the wall outlet, fire may result.
WARNING: Power Plug and Cord
• Make sure the power cord is plugged in the wall outlet securely.
Contact problems may lead to increased resistance, overheating, and the
risk of fire.
• Check whether the power cord is damaged. Check whether the sheath is
damaged.
If the power plug, cord, or sheath is damaged, replace with a new power
cord (with plugs on both ends) specified by Minolta. Using the damaged
power cord may result in fire or electric shock.
• When using the power cord (inlet type) that came with this copier, be sure to
observe the following precautions:
a. Make sure the copier-side power plug is securely inserted in the socket
on the rear panel of the copier.
Secure the cord with a fixture properly.
b. If the power cord or sheath is damaged, replace with a new power cord
(with plugs on both ends) specified by Minolta.
If the power cord (inlet type) is not connected to the copier securely, a
contact problem may lead to increased resistance, overheating, and risk
of fire.
• Check whether the power cord is not stepped on or pinched by a table and
so on.
Overheating may occur there, leading to a risk of fire.
S-3
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Power Plug and Cord
• Do not bundle or tie the power cord.
Overheating may occur there, leading to a risk of fire.
• Check whether dust is collected around the power plug and wall outlet.
Using the power plug and wall outlet without removing dust may result in
fire.
• Do not insert the power plug into the wall outlet with a wet hand.
The risk of electric shock exists.
• When unplugging the power cord, grasp the plug, not the cable.
The cable may be broken, leading to a risk of fire and electric shock.
WARNING: Wiring
• Never use multi-plug adapters to plug multiple power cords in the same out-
let.
If used, the risk of fire exists.
• When an extension cord is required, use a specified one.
Current that can flow in the extension cord is limited, so using an
extension cord which is too long, may result in fire.
Do not use an extension cable reel with the cable taken up. Fire may
result.
WARNING: Ground Lead
• Check whether the copier is grounded properly.
If current leakage occurs in an ungrounded copier, you may suffer electric
shock while operating the copier. Connect the ground lead to one of the
following points:
a. Ground terminal of wall outlet
b. Ground terminal for which Class D work has been done
S-4
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Ground Lead
• Pay attention to the point to which the ground lead is connected.
Connecting the ground lead to an improper point such as the points listed
below results in a risk of explosion and electric shock:
a. Gas pipe (A risk of explosion or fire exists.)
b. Lightning rod (A risk of electric shock or fire exists.)
c. Telephone line ground (A risk of electric shock or fire exists in the case
of lightning.)
d. Water pipe or faucet (It may include a plastic portion.)
2.2. Installation Requirements
WARNING: Prohibited Installation Place
• Do not place the copier near flammable materials such as curtains or volatile
materials that may catch fire.
A risk of fire exists.
• Do not place the copier in a place exposed to water such as rain water.
A risk of fire and electric shock exists.
WARNING: Nonoperational Handling
• When the copier is not used over an extended period of time (holidays, etc.),
switch it off and unplug the power cord.
Dust collected around the power plug and outlet may cause fire.
CAUTION: Temperature and Humidity
• Do not place the copier in a place exposed to direct sunlight or near a heat
source such as a heater.
A risk of degradation in copier performance or deformation exists.
Do not place the copier in a place exposed to cool wind.
Recommended temperature and humidity are as follows:
Temperature: 10 °C to 30 °C
Humidity: 10 % to 80 % (no dew condensation)
Avoid other environments as much as possible.
CAUTION: Ventilation
• Do not place the copier in a place where there is much dust, cigarette smoke,
or ammonia gas.
Place the copier in a well ventilated place to prevent machine problems
and image faults.
S-5
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION: Ventilation
• The copier generates ozone gas during operation, but it is not sufficient to be
harmful to the human body.
If a bad smell of ozone is present in the following cases, ventilate the room.
a. When the copier is used in a poorly ventilated room
b. When making a lot of copies
c. When using multiple copiers at the same time
CAUTION: Vibration
• When installing the copier, read the Installation Guide thoroughly. Be sure to
install the copier in a level and sturdy place.
Constant vibration will cause problems.
• Be sure to lock the caster stoppers.
In the case of an earthquake and so on, the copier may slide, leading to an
injury.
CAUTION: Inspection before Servicing
• Before conducting an inspection, read all relevant documentation (Service
manual, technical notices, etc.) and proceed with the inspection following the
prescribed procedure in safety clothes, using only the prescribed tools. Do
not make any adjustment not described in the documentation.
If the prescribed procedure or tool is not used, the copier may break and a
risk of injury or fire exists.
• Before conducting an inspection, be sure to disconnect the power plugs from
the copier and options.
When the power plug is inserted in the wall outlet, some units are still pow-
ered even if the POWER switch is turned OFF. A risk of electric shock
exists.
• The area around the fixing unit is hot.
You may get burnt.
DANGER: Work Performed with the Copier Powered
• Take every care when making adjustments or performing an operation check
with the copier powered.
If you make adjustments or perform an operation check with the external
cover detached, you may touch live or high-voltage parts or you may be
caught in moving gears or the timing belt, leading to a risk of injury.
S-6
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
DANGER: Work Performed with the Copier Powered
• Take every care when servicing with the external cover detached.
High-voltage exists around the drum unit. A risk of electric shock exists.
WARNING: Safety Checkpoints
• Check the exterior and frame for edges, burrs, and other damages.
The user or CE may be injured.
• Do not allow any metal parts such as clips, staples, and screws to fall into the
copier.
They can short internal circuits and cause electric shock or fire.
• Check wiring for squeezing and any other damage.
Current can leak, leading to a risk of electric shock or fire.
• When disconnecting connectors, grasp the connector, not the cable.
(Specifically, connectors of the AC line and high-voltage parts)
Current can leak, leading to a risk of electric shock or fire.
• Carefully remove all toner remnants and dust from electrical parts and elec-
trode units such as a charging corona unit.
Current can leak, leading to a risk of copier trouble or fire.
• Check high-voltage cables and sheaths for any damage.
Current can leak, leading to a risk of electric shock or fire.
• Check electrode units such as a charging corona unit for deterioration and
sign of leakage.
Current can leak, leading to a risk of trouble or fire.
• Before disassembling or adjusting the write unit incorporating a laser, make
sure that the power cord has been disconnected.
The laser light can enter your eye, leading to a risk of loss of eyesight.
• Do not remove the cover of the write unit. Do not supply power with the write
unit shifted from the specified mounting position.
The laser light can enter your eye, leading to a risk of loss of eyesight.
• When replacing a lithium battery, replace it with a new lithium battery speci-
fied in the Parts Guide Manual. Dispose of the used lithium battery using the
method specified by local authority.
Improper replacement can cause explosion.
S-7
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Safety Checkpoints
• After replacing a part to which AC voltage is applied (e.g., optical lamp and
fixing lamp), be sure to check the installation state.
A risk of fire exists.
• Check the interlock switch and actuator for loosening and check whether the
interlock functions properly.
If the interlock does not function, you may receive an electric shock or be
injured when you insert your hand in the copier (e.g., for clearing paper
jam).
• Make sure the wiring cannot come into contact with sharp edges, burrs, or
other pointed parts.
Current can leak, leading to a risk of electric shock or fire.
• Make sure that all screws, components, wiring, connectors, etc. that were
removed for safety check and maintenance have been reinstalled in the orig-
inal location. (Pay special attention to forgotten connectors, pinched cables,
forgotten screws, etc.)
A risk of copier trouble, electric shock, and fire exists.
DANGER: HANDLING OF SERVICE MATERIALS
• Toner and developer are not harmful substances, but care must be taken not
to breathe excessive amounts or let the substances come into contact with
eyes, etc. It may be stimulative.
If the substances get in the eye, rinse with plenty of water immediately.
When symptoms are noticeable, consult a physician.
• Never throw the used cartridge and toner into fire.
You may be burned due to dust explosion.
DANGER : HANDLING OF SERVICE MATERIALS
• Unplug the power cord from the wall outlet.
Drum cleaner (isopropyl alcohol) and roller cleaner (acetone-based) are
highly flammable and must be handled with care. A risk of fire exists.
S-8
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
DANGER : HANDLING OF SERVICE MATERIALS
• Do not replace the cover or turn the copier ON before any solvent remnants
on the cleaned parts have fully evaporated.
A risk of fire exists.
• Use only a small amount of cleaner at a time and take care not to spill any
liquid. If this happens, immediately wipe it off.
A risk of fire exists.
• When using any solvent, ventilate the room well.
Breathing large quantities of organic solvents can lead to discomfort.
3.
MEASURES TO TAKE IN CASE OF AN ACCIDENT
•
•
•
•
If an accident has occurred, the distributor who has been notified first must immediately take emergency
measures to provide relief to affected persons and to prevent further damage.
If a report of a serious accident has been received from a customer, an on-site evaluation must be carried
out quickly and Minolta Corporation must be notified.
To determine the cause of the accident, conditions and materials must be recorded through direct on-site
checks, in accordance with instructions issued by Minolta Corporation.
For reports and measures concerning serious accidents, follow the regulations given in “Serious Accident
Report/Follow-up Procedures”.
4.
CONCLUSION
•
•
Safety of users and customer engineers depends highly on accurate maintenance and administration.
Therefore, safety can be maintained by the appropriate daily service work conducted by the customer
engineer.
When performing service, each copier on the site must be tested for safety. The customer engineer must
verify the safety of parts and ensure appropriate management of the equipment.
S-9
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY INFORMATION
IMPORTANT INFORMATION
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented
regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products mar-
keted in the United States.
This copier is certified as a “Class 1” laser product under the U.S.
Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation
Control for Health and Safety Act of 1968. Since radiation emitted inside this copier is completely confined within
protective housings and external covers, the laser beam cannot escape during any phase of normal user opera-
tion.
S-10
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY CIRCUITS
This machine is provided with the following safety circuits to prevent machine faults from resulting in serious
accidents.
•
•
Overall protection circuit
Fixing upper lamp /1 (L2), Fixing upper lamp /2 (L3), Fixing lower lamp (L4) overheating prevention circuit
These safety circuits are described below to provide
the service engineer with a renewed awareness of
them in order to prevent servicing errors that may
impair their functions.
1.
Overall protection circuit
CBR1
CBR2
NF
8050sf001
1.1 Protection by circuit breaker /1 (CBR1) and circuit breaker /2 (CBR2)
CBR1 and CBR2 interrupt the AC line instantaneously when an excessive current flows due to a short in
the AC line.
CAUTION:
The CBR1 and CBR2 functions must not be deactivated under any circumstances.
S-11
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
2.
Fixing upper lamp /1 (L2), Fixing upper lamp /2 (L3), Fixing lower lamp (L4) overheating
prevention circuit
PRCB
ACDB
TH1
TH3
L2
L3
TS1
TS2
AC driver
section
FHCB
Control
section
TH2
TH4
L4
RL1
8050sf002e
RL1
2.1 Protection by software
The output voltage from fixing temperature sensor /1 (TH1) and fixing temperature sensor /2 (TH2) is read
by the CPU. If this voltage is abnormal, L2, L3, and L4 are turned OFF by opening main relay (RL1).
CAUTION:
• The clearance between the fixing upper roller and TH1 and the clearance between the fixing
lower roller and TH2 must not be changed. When replacing them, make sure to comply with the
specified clearances.
• The RL1 function must not be deactivated under any circumstances.
2.2 Protection by the hardware circuit
The output voltages from fixing temperature sensor /1 (TH1), fixing temperature sensor /2 (TH2), fixing
temperature sensor /3 (TH3), and fixing temperature sensor /4 (TH4) are compared with the abnormality
judgment reference value in the comparator circuit. If the output voltage from TH1, TH2, TH3, or TH4
exceeds the reference value, L2, L3, and L4 are turned OFF by opening RL1.
CAUTION:
• The clearance between the fixing upper roller and TH1 and the clearance between the fixing
lower roller and TH2 must not be changed. When replacing them, make sure to comply with the
specified clearances.
• Periodically check the contact between the fixing upper roller and TH3 and the contact
between the fixing lower roller and TH4, and replace them if any abnormality is detected.
• The RL1 function must not be deactivated under any circumstances.
2.3 Protection by thermostat /1 (TS1) and thermostat /2 (TS2)
When the temperature of the fixing upper roller exceeds the specified value, TS1 is turned OFF, thus inter-
rupting the power to L2 and L3 directly. When the temperature of the fixing lower roller exceeds the speci-
fied value, TS2 is turned OFF, thus interrupting the power to L4 directly.
CAUTION:
Do not use any other electrical conductor in place of TS1 and TS2.
S-12
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
INDICATION OF WARNING ON THE MACHINE
Caution labels shown below are attached in some areas on/in the machine.
When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid
burns and electric shock.
8050sf003e
CAUTION
Please adhere to all caution labels to avoid burns or injury.
S-13
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
8050sf004e
CAUTION
-
Please adhere to all caution labels to avoid burns or injury.
S-14
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
8050sf005e
CAUTION
Please adhere to all caution labels to avoid burns or injury.
S-15
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
8050sf006e
CAUTION
-
Please adhere to all caution labels to avoid burns or injury.
S-16
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
8050sf007e
CAUTION
Please adhere to all caution labels to avoid burns or injury.
S-17
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY AND IMPORTANT WARNING ITEMS
PS
Unplug the machine before removing platen glass.
Debrancher le copieur avant de retirer la vitre d'exposition.
Desenchufe la maquina antes de quitar el vidrio.
~
Desconecte a unidade da tomada antes de remover o vidro de exposicao.
8050sf008e
CAUTION
-
Please adhere to all caution labels to avoid burns or injury.
S-18
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
OUTLINE OF SYSTEM
I OUTLINE
1. OUTLINE OF SYSTEM
[13]
[14]
[12]
[1]
[11]
[2]
[3]
[10]
[12]
[6]
[11]
[4]
[5]
[9]
[8]
[7]
8050ma1001
[1] Main body
[8] Trimmer (TMG-3)
[9] Finisher (FN-9)
[10] Finisher (FN-120)
[11] Puncher (PK-5)
[2] LCT (C-208)
[3] Printer controller (Fiery S300 50C-K)
[4] Hard disk (HDD-7)
[5] Expansion memory (256MB x 4)
[6] Key counter
[12] Cover sheet feeder (Cover Inserter D)
[13] RADF (AFR-20)
[7] TMG-3 Connection kit (TMG Kit A)
[14] Original cover Kit (OC-2)
1-1
Download from Www.Somanuals.com. All Manuals Search And Download.
PRODUCT SPECIFICATIONS
CF5001 Ver.1.0 Sep. 2003
2. PRODUCT SPECIFICATIONS
A. Type
Type:
Console type (floor-mounted type)
Tandem intermediate transfer type electrostatic method
Copying method:
Original table:
Fixed
Original alignment:
Photosensitive material:
Sensitizing method:
Paper feed trays:
Rear left side as reference
OPC
Laser writing
3 trays method (500 sheets x 3, 80 to 90 g/m2) (400 sheets x 3, 105 g/m2)
Multisheet by-pass tray (250 sheets, 80 to 90 g/m2) (200 sheets, 105g/m2)
C-208 (2500 sheets, 80 to 90g/m2) *1
*1: Optional
B. Functions
Original to be copied:
Maximum original size:
Sheet, book, solid object
A3, or 11 x 17 (303 x 438 mm for non standard)
Copy size (for metric area): Tray 1 to 3:
A3, B4, A4, A4R, B5, B5R, A5R,
8.5 x 11, 8.5 x 14, 11 x 17, 12 x 18, 13 x 19, wide paper *1
By-pass feed: A3, B4, A4, A4R, B5, B5R, A5R,
8.5 x 11, 8.5 x 11R, 11 x 17, 12 x 18, 13 x 19, wide paper *1
A3, B4, A4, A4R, B5, B5R, A5R,
ADU:
Tray 1 to 3:
8.5 x 11, 8.5 x 11R, 11 x 17, 12 x 18, 13 x 19, wide paper *1
A3, B4, A4, B5, B5R, 5.5 x 8.5R, 8.5 x 11, 8.5 x 11R,
8.5 x 14, 11 x 17, 12 x 18, 13 x 19, wide paper *1
Copy size (for inch area):
By-pass feed: A3, B4, A4, B5, B5R, 5.5 x 8.5R, 8.5 x 11, 8.5 x 11R,
8.5 x 14, 11 x 17, 12 x 18, 13 x 19, wide paper *1
ADU:
A3, B4, A4, B5, B5R, 5.5 x 8.5R, 8.5 x 11, 8.5 x 11R,
8.5 x 14, 11 x 17, 12 x 18, 13 x 19, wide paper *1
*1: Wide paper is available up to 330 x 487 mm.
Magnification:
Fixed magnification
for metric area: x 1.000, x 2.000, x 1.414, x 1.224, x 1.154,
x 0.866, x 0.816, x 0.707, x 0.500
for inch area:
x 1.000, x 2.000, x 1.545, x 1.294, x 1.214,
x 0.786, x 0.772, x 0.647, x 0.500
Special ratio magnification: 3 types
Zoom magnification:
x 0.250 to x 4.000 (graduated at increment of 0.1 %)
Vertical magnification:
x 0.250 to x 4.000 (graduated at increment of 0.1 %)
Horizontal magnification:
x 0.250 to x 4.000 (graduated at increment of 0.1 %)
Warm-up time
for metric area:
for inch area:
(at room temperature of 20 °C with rated voltage)
Less than 420 sec.
Less than 390 sec.
1-2
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
First copy time:
PRODUCT SPECIFICATIONS
Full color:
Less than 7.6 sec.
(platen mode, life size, manual density,
paper feed tray /1 to /3, plain paper, without gloss,
face up paper exit, A4 or 8.5 x 11)
Monochrome:
Less than 7.6 sec. (platen mode, life size, manual density,
paper feed tray /1 to /3, plain paper, without gloss,
face up paper exit, A4 or 8.5 x 11)
Black-and-white: Less than 6.0 sec. (platen mode, life size, manual density,
paper feed tray /1 to /3, plain paper, without gloss,
face up paper exit, A4 or 8.5 x 11)
Continuous copy speed:
Continuous copy count:
Full color:
51 sheets/min. (A4, memory copy)
50 sheets/min. (8.5 x 11, memory copy)
51 sheets/min. (A4, memory copy)
50 sheets/min. (8.5 x 11, memory copy)
Monochrome:
Black-and-white: 51 sheets/min. (A4, memory copy)
50 sheets/min. (8.5 x 11, memory copy)
9999 sheets, max. or 9999 copies
Paper exit tray loading capacity:
Copy density selection:
150 sheets (A4), max.
AE, manual (9 steps)
Resolution:
Scan:
600 dpi x 600 dpi
Copy:
600 dpi x 600 dpi
E-RDH memory *2
Interface:
Standard:
Max.:
128 MB for each color (Y, M, C, K);
384 MB for each color (Y, M, C, K)
Serial port (USB Type B), Serial port (RS-232C), RJ45 Ethernet connector,
parallel port (based on IEEE 1284), Video interface for Fiery Controller.
No. of originals in memory: Full color:
Priority in high resolution: 18 faces or more
Priority in smooth tone: 18 faces or more
Priority in high compression: 38 faces or more
Conditions
Original: KC #101/A3 (color)
Density: Manual 5
Mode:
Memory capacity: Standard 128 MB only loaded
Black-and-white/monochrome:
Character/picture, printed original, life size
Priority in high resolution: 101 faces or more
Priority in smooth tone: 101 faces or more
Priority in high compression: 318 faces or more
Conditions:
Original:
Density:
Mode:
Image electronic institute FAX #4 chart/A4
Manual 5
Character/picture, printed original, life size
Memory capacity: Standard 128 MB only loaded
Job: Job in the mode in which job memory is not used.
*2: Standard 128MB memory is packaged on the board. So, it cannot be changed for a new one.
Four slots are provided for expansion, and it is possible to install option memory.
(set of 4 by 256MB)
1-3
Download from Www.Somanuals.com. All Manuals Search And Download.
PRODUCT SPECIFICATIONS
CF5001 Ver.1.0 Sep. 2003
C. Copy paper
Standard specified paper:
For full color:
Neusiedler Color Copy 90g/m2
Hammermill Tidal 75 g/m2
For black-and-white: Konica Business Class 80 g/m2
Hammermill Laser Color Copy Photo White/
Brightness 96 105 g/m2
Ordinary paper:
Special paper *1
High quality paper, coated paper and recycled paper of 64 g/m2 to 105 g/m2
Label paper, and ordinary paper of 106g/m2 to 256g/m2
*1
Label paper should be fed one at a time by the by-pass feed method.
Coated paper of 106 g/m2 to 256 g/m2 is fed one at a time by by-pass feed. However, it is possible to
feed it through C-208 (optional).
Double sided copy is unavailable for special paper that is other than the ordinary paper of 106 g/m2 to
209 g/m2.
D. Machine data
Power source
for metric area:
for inch area:
Power consumption
for metric area:
for inch area:
Weight:
230 VAC -14 % to 10.6 % 50 Hz
208 ~ 240 VAC 10% 60 Hz
3400 W max. (Full option)
3600 W max. (Full option)
Approx. 313 kg
Dimensions:
794 mm (W) x 889 mm (D) x 1056 mm (H) with platen cover provided
E. Maintenance and life
Maintenance:
Once every 100,000 copies
Machine service life:
5,000,000 copies or 5 years (whichever earlier)
F. Consumables
Developer:
Toner:
Exclusively for CF5001
Exclusively for CF5001
Exclusively for CF5001 (φ60)
Drum:
G. Operating environment
Temperature:
Humidity:
10°C to 30°C
10% RH to 80% RH
Note:
• The information herein may be subject to change for improvement without notice.
1-4
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
CENTER CROSS SECTION
3. CENTER CROSS SECTION
[21]
[20]
[22]
[1]
[2]
[3]
[4]
[19]
[18]
[5]
[7]
[6]
[8]
[9]
[17]
[16]
[15]
[10]
[14]
[13]
[12]
8050ma1002
[11]
[1] Process unit
[2] Developing unit /Y
[3] Developing unit /M
[4] Write unit /Y
[12] Paper feed tray /3
[13] Paper feed tray /2
[14] Paper feed tray /1
[15] ADU
[5] Write unit /M
[6] Write unit /C
[7] Developing unit /C
[8] Developing unit /K
[9] Write unit /K
[10] By-pass tray
[11] Drum
[16] Reverse section
[17] Paper exit tray
[18] Paper exit section
[19] Transfer belt unit
[20] Image correction unit
[21] Scanner section
[22] CCD unit
1-5
Download from Www.Somanuals.com. All Manuals Search And Download.
PAPER PATH
CF5001 Ver.1.0 Sep. 2003
4. PAPER PATH
Front side
8050ma1029
1-6
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Back side
PAPER PATH
8050ma1030
1-7
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5. DRIVE SYSTEM DIAGRAM
5.1 Drum drive
[2]
8050ma1003
[1]
[1] Drum motor /Y, /M, /C, /K (M14, M15, M16, M17)
[2] Drum
1-8
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRIVE SYSTEM DIAGRAM
5.2 Transfer belt conveyance/pressure drive
[9]
[8]
[1]
A
[2]
[3]
[7]
[4]
[6]
[16]
[15]
[14]
[13]
[12]
[11]
[10]
[5]
8050ma1004
[1] 1st transfer roller /Y
[2] Drum
[9] Belt drive roller
[10] While in stand-by (Total release)
[11] Black-and-white mode
[3] 1st transfer roller /M
[4] 1st transfer roller /C
[5] 1st transfer roller /K
[6] 1st transfer pressure/release motor (M19)
[7] Transfer belt
(Pressure on 1st transfer roller /K only)
[12] Full color mode (Total pressure)
[13] 1st transfer roller /K pressure release arm
[14] Drive coupling
[8] Transfer belt motor (M18)
[15] 1st transfer roller /K pressure release cam
[16] 1st transfer roller /Y /M /C pressure release
cam
1-9
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5.3 Developing drive
[1]
[7]
8050ma1005
[6]
[5]
[4] [3]
[2]
[1] Toner collection screw
[2] Toner agitator screw
[3] Developing coupling /2
[4] Developing motor /Y, /M, /C, /K
(M20, M21, M22, M23)
[5] Toner conveyance screw
[6] Developing coupling /1
[7] Developing sleeve
1-10
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRIVE SYSTEM DIAGRAM
5.4 Toner supply drive
[1]
[2]
[12]
[13]
[11]
[3]
C
[10]
[9]
[8]
[7]
[4]
[5]
D
B
[6]
[14]
A
8050ma1006e
[1] Toner supply gear /A (Same shaft as C)
[2] Toner bottle clutch /Y (MC14)
[3] Toner bottle clutch /M (MC15)
[4] Toner bottle clutch /C (MC16)
[5] Toner supply gear /A (Same shaft as D)
[6] Toner bottle clutch /K (MC17)
[7] Toner supply motor /K (M52)
[8] Toner supply motor /C (M51)
[9] Toner bottle motor (M53)
[10] Toner supply motor /M (M50)
[11] Toner supply motor /Y (M49)
[12] Toner bottle drive gear
[13] Toner conveyance screw
[14] Toner supply screw
1-11
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5.5 Toner collection drive
[7]
[8]
A
[6]
[1]
[2]
[3]
[5]
[4]
8050ma1007
[1] Drum waste toner receiving port
[2] Horizontal conveyance screw
[3] Horizontal conveyance pipe
[4] Paper feed motor (M41)
[5] Vertical conveyance pipe
[6] Belt collection screw
[7] Transfer belt motor (M18)
[8] Belt collection drive cam
1-12
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRIVE SYSTEM DIAGRAM
5.6 Fixing drive
[1]
[1]
[2]
FRONT
[7]
[6]
[5]
8050ma1008
[4]
[3]
[1] Web motor (M54)
[2] Fixing roller /U
[3] One-way clutch
[5] Fixing roller /L
[6] Fixing motor (M29)
[7] Fixing paper exit roller
[4] Pressure/release cam
1-13
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5.7 Paper feed drive
5.7.1
Paper feed tray /1 to /3 drive
[17]
[18]
[27] [21][20]
[19]
[15]
[16]
[23] [24]
[22]
[26]
[25]
[1]
[2]
[3]
[6]
[4]
[14]
[13] [12] [11] [9] [10] [8] [7] [5]
8050ma1009
[1] Pre-registration roller /3
[8] Paper feed roller /3
[2] Pre-registration clutch /3 (MC12)
[3] Drive coupling /3
[9] Double feed prevention roller /2
[10] Tray up drive motor /3 (M38)
[11] Paper feed roller /2
[4] Paper feed motor (M41)
[5] Double feed prevention roller /3
[6] Feed roller /3
[12] Tray up drive motor /2 (M39)
[13] Double feed prevention roller /1
[14] Paper feed tray
[7] Paper feed clutch /3 (MC11)
1-14
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRIVE SYSTEM DIAGRAM
[15] Up/down wire
[22] Feed roller /2
[16] Tray up drive motor /1 (M40)
[17] Paper feed roller /1
[23] Paper feed clutch /2 (MC9)
[24] Drive coupling /2
[18] Feed roller /1
[25] Pre-registration roller /2
[26] Pre-registration clutch /2 (MC10)
[27] Drive coupling /1
[19] Paper feed clutch /1 (MC7)
[20] Pre-registration roller /1
[21] Pre-registration clutch /1 (MC8)
5.7.2
Vertical conveyance drive
[4]
[1]
[3]
[2]
8050ma1010
[1] Intermediate conveyance clutch /1 (MC13)
[2] Paper feed motor (M41)
[3] Drive coupling
[4] Intermediate conveyance roller /1
1-15
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5.8 ADU drive
5.8.1
By-pass tray drive
[6]
[7] [2] [8]
[1]
[5]
[4]
[3]
8050ma1011
[1] Up/down gear
[5] Drive coupling
[6] Feed roller /BP
[2] Paper feed roller /BP
[3] Double feed prevention roller /BP
[4] Paper feed motor (M41)
[7] Paper feed clutch /BP (MC6)
[8] Tray up drive motor /BP (M35)
1-16
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
5.8.2 Registration drive/loop drive
DRIVE SYSTEM DIAGRAM
[4]
[1]
8050ma1012
[3]
[2]
[1] Loop roller motor (M31)
[2] Loop roller
[3] Registration roller
[4] Registration roller motor (M30)
1-17
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
5.8.3 ADU conveyance drive
CF5001 Ver.1.0 Sep. 2003
A
[11]
[15]
[9][10]
[6][7]
[8]
[12]
[13][14]
A
[1][2]
[4][5]
[16]
[18]
[3]
[17]
A
8050ma1013
[1] Intermediate conveyance roller /2
[10] ADU conveyance clutch /2 (MC1)
[11] 2nd transfer section
[2] Intermediate conveyance clutch /2 (MC4)
[3] Paper feed motor (M41)
[12] 2nd transfer pressure/release motor (M34)
[13] Intermediate conveyance roller /3
[14] Intermediate conveyance clutch /3 (MC5)
[15] Drive coupling
[4] ADU pre-registration roller
[5] ADU pre-registration clutch (MC3)
[6] ADU conveyance roller /1
[7] ADU conveyance clutch /1 (MC2)
[8] Timing belt
[16] Transfer belt
[17] Pressure arm
[9] ADU conveyance roller /2
[18] 2nd transfer roller
1-18
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
5.8.4 Reverse paper exit drive
DRIVE SYSTEM DIAGRAM
[1]
[5]
[3]
[4]
8050ma1014
[2]
[1] Reverse gate
[2] Reverse/exit motor (M33)
[3] Reverse/exit solenoid (SD4)
[4] Reverse/exit roller /2
[5] Decurler roller
1-19
Download from Www.Somanuals.com. All Manuals Search And Download.
DRIVE SYSTEM DIAGRAM
CF5001 Ver.1.0 Sep. 2003
5.9 Main body paper exit drive
[6]
[1]
[2]
[5]
8050ma1015
[4]
[3]
[1] Reverse gate
[4] Reverse/exit roller /2
[5] Timing belt
[2] Drive coupling
[3] Reverse/exit motor (M33)
[6] Paper exit roller
1-20
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRIVE SYSTEM DIAGRAM
5.10 Scanner drive
[5]
[4]
[1]
FRONT
[3]
[2]
8050ma1016
[1] Exposure unit
[4] Scanner drive wire /R
[5] Scanner motor (M1)
[2] Scanner drive wire /F
[3] V-mirror unit
1-21
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE CREATION PROCESS
CF5001 Ver.1.0 Sep. 2003
6. IMAGE CREATION PROCESS
6.1 Image creation flow and function
Step
Step 1
Process
Function
Forms the layer of charges on the photosensitive drum.
Charging process
Step 2
Step 3
Step 4
Laser exposure process Form an electrostatic latent image on the photosensitive drum.
Developing process
1st transfer process
Makes an electrostatic latent image visible.
Forms an image by synthesizing on the transfer belt a mono-
chrome (YMCK) visible image from each photosensitive drum.
Transfers an image on the transfer belt to paper.
Separates paper from the transfer belt after completion of the
transfer of the toner.
Step 5
Step 6
2nd transfer process
Separation process
Sub step 1 Drum cleaning
Removes toner adhered on the surface of the photosensitive
drum after completion of the primary transfer.
Sub step 2 Pre-charging exposure
Sub step 3 Transfer belt cleaning
Removes residual potential on the surface against the photosen-
sitive drum after completion of drum cleaning.
Removes toner adhered on the surface of the transfer belt after
completion of the 2nd transfer.
Sub step 4 2nd transfer roller /L
cleaning
Remove toner adhered on the 2nd transfer roller /L after comple-
tion of the 2nd transfer.
Sub step 5 Toner collection
Collects toner that has been removed through the drum cleaning
and the transfer belt cleaning. (Not shown in the drawing below.)
[11]
[1]
Step 3
[2]
Sub step 3
[12]
[4] [3]
Step 2
Step 4
Step 1
Sub step 1
[10]
Sub step 2
[9]
[8]
Step 6
[5]
[6]
8050ma1017
[7]
Step 5 / Sub step 4
[1] Developing unit
[2] Write unit
[7] Separation neutralizing section
[8] 2nd transfer roller /U
[9] Transfer belt
[3] Charging corona
[4] Pre-charging exposure lamp (PCL)
[5] Paper
[10] Blade (drum cleaning)
[11] Blade (transfer belt cleaning)
[12] Drum
[6] 2nd transfer roller /L
1-22
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
IMAGE CREATION PROCESS
6.2 Charging process (Step 1)
The charging corona, having a gold-plated tungsten wire, is applied with a high DC voltage (minus) to neg-
atively charge the surface of the photosensitive drum by wire discharge. The charging corona is provided
with a charging control plate to make charges on the surface of the photosensitive drum uniform. Photo-
sensitive drums are provided for the four colors of Y, M, C and K.
[1]
[2]
8050ma1018
[4]
[3]
[1] Drum
[3] Charging corona
[2] Charge (negative)
[4] Charging control plate
6.3 Laser exposure process (Step 2)
Charges on the surface of the photosensitive drum have a characteristic that when they are irradiated with
light, they are neutralized and vanish. Using this characteristic, a laser beam is irradiated on the image
region to create an image by removing charges on the photosensitive drum. This image is referred to as an
electrostatic latent image. A Laser beam is irradiated on each photosensitive drum of Y, M, C and K corre-
sponding to the four color data resolved by the image processing section.
[4]
[3]
[1]
[2]
8050ma1019
[1] Write unit
[3] Neutralized section
[4] Charge (negative)
[2] Laser beam
1-23
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE CREATION PROCESS
CF5001 Ver.1.0 Sep. 2003
6.4 Developing process (Step 3)
In the electrostatic latent image on the photosensitive drum, the non-image section is negatively charged
and the image section is neutralized. When toner, that is, negatively charged is brought close to the photo-
sensitivity drum, toner is attracted to the image section on the drum by the potential difference with the
developing bias and becomes visible. This process is called developing.
[2]
[3]
[4]
[1]
8050ma1020
[1] Drum
[2] Charge (negative)
[3] Toner (negative)
[4] Developing sleeve
1-24
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
IMAGE CREATION PROCESS
6.5 1st transfer process (Step 4)
Toner on each drum of Y, M, C and K is transferred onto the transfer belt, this allows for overlapping of the
colors. This movement of toner from the drum to the transfer belt is referred to as the 1st transfer, where
the transfer of toner is carried out sequentially in the order of Y, M, C and K.
While in the 1st transfer, the 1st transfer roller provided at the rear of the transfer belt is applied with a high
DC bias voltage (positive). As a result, a positive potential on the surface of the transfer belt is higher than
that of the surface of each drum, and toner moves from the drum to the transfer belt.
[3]
[4]
[5]
[2]
[1]
[8]
[5]
[7]
[6]
8050ma1021
[1] Drum /Y
[5] Charge (negative)
[6] Drum /M
[2] 1st transfer roller /Y
[3] Transfer belt
[4] Toner /Y
[7] 1st transfer roller /M
[8] Toner /M
1-25
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE CREATION PROCESS
CF5001 Ver.1.0 Sep. 2003
6.6 2nd transfer process (Step 5)
The operation to transfer the toner image of the four colors on the transfer belt to paper is referred to as the
2nd transfer. While in the 2nd transfer, the 2nd transfer roller /L provided at the lower section of the transfer
belt conveys paper while pressing it against the transfer belt. At this time, the 2nd transfer roller /U pro-
vided at the rear of the transfer belt is applied with a high DC bias voltage (negative). Toner on the transfer
belt is shifted toward the paper by the electric field formed between the 2nd transfer roller /U and the 2nd
transfer roller /L.
[1]
[4]
[2]
8050ma1022
[3]
[1] Transfer belt
[2] Paper
[3] 2nd transfer roller /L
[4] 2nd transfer roller /U
6.7 Separation process (Step 6)
While in the 2nd transfer, paper in the process of transfer is negatively charged by the 2nd transfer roller /
U, resulting in an adsorption phenomenon where paper is attracted to the transfer belt. This operation to
peel paper that is thus adsorbed off the transfer belt is referred to as separation.
Separation is made by applying high AC and DC bias voltages to the separation neutralizing section. As a
result the charges of the paper and the transfer belt are neutralized.
[1]
[2]
8050ma1023
[4]
[3]
[1] Transfer belt
[2] Paper
[3] 2nd transfer roller /L
[4] Separation neutralizing section
1-26
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
IMAGE CREATION PROCESS
6.8 Drum cleaning (Sub step 1)
A drum that has completed the 1st transfer has a residual amount of toner that is left from the transfer pro-
cess. The process to remove toner is referred to as drum cleaning.
Drum cleaning is made by scraping toner adhered to the drum surface with the edge of a plate called a
blade that is made of urethane rubber.
[1]
[3]
8050ma1024
[2]
[1] Drum
[3] Residual toner
[2] Cleaning blade
6.9 Pre-charging exposure (Sub step 2)
No toner adhesion is found on the surface of a drum that has completed drum cleaning, but there is a very
small amount of residual potential found. Since a normal charging for the next copy/print cannot be carried
out as it is, exposure other than a laser exposure is made to thoroughly neutralize a potential on the drum
surface. This process is referred to as a pre-charging exposure.
This machine conducts this process by using a pre-charging exposure lamp (PCL).
[1]
[3]
8050ma1025
[2]
[1] Drum
[3] Residual charge
[2] Pre-charging exposure lamp (PCL)
1-27
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE CREATION PROCESS
CF5001 Ver.1.0 Sep. 2003
6.10 Transfer belt cleaning (Sub step 3)
A transfer belt that has completed the 2nd transfer has a residual amount of toner that is left from the trans-
fer process. The process to remove toner is referred to as a transfer belt cleaning.
A transfer belt cleaning is made by scraping toner adhered to the drum surface with the edge of a plate
called a blade that is made of urethane rubber.
[3]
[1]
[2]
8050ma1026
[1] Transfer belt
[3] Cleaning blade
[2] Residual toner
6.11 2nd transfer roller /L cleaning (Sub step 4)
Residual toner on the transfer belt is in direct contact with the 2nd transfer roller /L. As a result, the 2nd
transfer roller /L may be coated with toner.
So, the 2nd transfer roller /U is applied with a positive and a negative high DC bias voltage alternately to
move toner on the 2nd transfer roller /L to the transfer belt side. The toner on the transfer belt that has
been moved is cleaned by the transfer belt cleaning mentioned above.
[1]
[3]
[2]
[5]
[4]
8050ma1027
[1] Transfer belt
[4] DC bias (positive) applied
[5] DC bias (negative) applied
[2] 2nd transfer roller /L
[3] 2nd transfer roller /U
1-28
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
IMAGE CREATION PROCESS
6.12 Toner collection (Sub step 5)
Toner that was cleaned in the drum cleaning section and the transfer belt cleaning section is collected into
the toner collection box through the toner collection screw.
[2]
[3]
[4]
[5]
[6]
[1]
8050ma1028
[1] Toner collection box
[4] Drum /M toner collection opening
[5] Drum /C toner collection opening
[6] Drum /K toner collection opening
[2] Transfer belt toner collection opening
[3] Drum /Y toner collection opening
6.13 Process speed
In combination of the weighing of paper and the surface finish of an output image, this machine provides
three types of process speeds.
Weighing
64 to 105 g/m2
106 to 256 g/m2
Without gloss
220 mm/s *1
110 mm/s (1/2 speed)
With gloss
110 mm/s (1/2 speed)
73.3 mm/s (1/3 speed)
*1 If paper is coated paper, the speed will be 110 mm/s.
1-29
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE CREATION PROCESS
CF5001 Ver.1.0 Sep. 2003
Blank Page
1-30
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
SCANNER
II UNIT EXPLANATION
1. SCANNER
1.1 Composition
CONT
PS1 PS2 [7] [8] M1
U
V
W
DRIVE
EM
M2
[1]
SCDB
[2]
[6]
PS3
PS4 [5]
[4]
[3]
PRCB
8050ma2001
OACB
Function or method
Symbol
[1]
Name
CCD board (CCDB)
Converts an analog signal to a digital signal
Detects whether the platen cover or RADF is closed
Magnet sensor type
[2]
DF reset read switch (RS1)
CCD unit
[3]
[4]
[5]
Converts the read image optoelectronically (600 dpi)
3 lines (RGB) linear image sensor
The light source for reading an image
Xenon fluorescent lamp (white)
Exposure lamp (L1)
Exposure unit
Reads an image
Light source moving slit exposure
• Outgoing: 220 mm/sec (at life-size)
• Backhaul: 802 mm/sec (at life-size)
Reflects the read light (2nd, 3rd mirror)
[6]
[7]
V-mirror unit
Scanner wire
Transfers the driving force from M1 to the exposure unit and the
V-mirror unit (front, back)
[8]
L1 inverter (L1 INVB)
Scanner motor
Turns on L1
M1
Drives the scanner wire for moving the exposure unit and the V-
mirror unit
3-phase stepping motor
M2
Scanner cooling fan
Scanner HP sensor
APS timing sensor
Cools the scanner section (exhaust)
Detects the home position for the exposure unit
Detects whether the platen cover or RADF is opened/closed
PS1
PS2
2-1
Download from Www.Somanuals.com. All Manuals Search And Download.
SCANNER
CF5001 Ver.1.0 Sep. 2003
Function or method
Symbol
PS4
Name
APS sensor /L
APS sensor /S
Detects the original size in the sub-scan direction (for large size)
Detects the original size in the sub-scan direction (for small size)
PS3
1.2 Operation
1.2.1
Home position search in the exposure unit
The exposure units searches for the home position when the main switch (SW2) or the start button is
turned on. The operation may different depending on the state of the scanner HP sensor.
A. When PS1 is off
[1]
[2]
[3]
8050ma2002
[1] Home position
[2] PS1
[3] Platen APS location
B. When PS1 is on
[1]
[2]
[3]
8050ma2003
[1] Home position
[2] PS1
[3] Platen APS location
2-2
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
1.2.2 Shading correction reading
SCANNER
The exposure unit starts the shading correction with the white standard board attached to the platen glass
once it completes the home position search.
In the shading correction operation, the white correction is performed twice and the black correction once.
In the white correction, the white standard board is read while the exposure lamp (L1) is turned on. In the
black correction, the board is read while the lamp is off.
Data for each CCD sensor is read during the both white corrections and each pixel is compared its bright-
ness. The brighter data is regarded as the white correction data.
The shading correction reading operation may differ between when the main switch (SW2) is turned on
and when the start button is turned on.
A. When the main switch (SW2) is turned on
[1]
[2] [3]
[4]
[5]
[6]
8050ma2004
[7]
[1] Platen APS location (home position)
[2] PS1
[5] 2nd white correction
[6] Black correction
[3] Platen APS position
[4] 1st white correction
[7] Returning the amount moved
B. When the start button is turned on
The basic operation is identical to when the main switch (SW2) is turned on; however, it starts the copying
operation without stopping at the platen APS location after reading the shading correction.
2-3
Download from Www.Somanuals.com. All Manuals Search And Download.
SCANNER
CF5001 Ver.1.0 Sep. 2003
1.2.3
Original reading mode
There are two original reading modes, the platen mode and the DF mode. The original reading is a com-
mon operation.
A. When copying with the manual density setting
[1]
[2] [3]
[4]
[5]
[6]
8050ma2005
[7]
[1] Home position
[2] PS1
[5] 2nd white correction
[6] Exposure scan
[3] Platen APS position
[4] 1st white correction
[7] Home position search
B. When performing the AE copy
[1]
[2] [3]
[4]
[5]
[6]
[7]
8050ma2006
[8]
[1] Home position
[2] PS1
[5] 2nd white correction
[6] AE scan
[3] Platen APS position
[4] 1st white correction
[7] Exposure scan
[8] Home position search
2-4
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
1.2.4 Original reading control
SCANNER
The reflection from the exposed original reaches to the CCD sensor through the lens. The CCD sensor
outputs an electric signal (analog) proportional to the amount of light and then the analog signal is con-
verted to a digital signal in the CCD board (CCDB) according to directions from the overall control board
(OACB).
The CCD sensor includes three separate photoreceivers for the 1st colors R, G, and B. The A/D converter
signals for each color are also created separately.
A. Original reading timing
The original reading timing is same in the platen mode and in the DF mode when AE/ACS has not been
set; however, it is different when AE/ACS has been set.
(1) When AE/ACS has not been set
[1]
[2] [3]
[4]
[5]
[6]
8050ma2051
[7]
[1] Home position
[2] PS1
[5] 2nd white correction
[6] Exposure scan (220 mm/s)
[7] Home position search
[3] Platen APS position
[4] 1st white correction
2-5
Download from Www.Somanuals.com. All Manuals Search And Download.
SCANNER
(2) When AE/ACS has been set (the platen mode)
CF5001 Ver.1.0 Sep. 2003
[1]
[2] [3]
[4]
[5]
[6]
[7]
8050ma2052
[8]
[1] Home position
[2] PS1
[5] 2nd white correction
[6] AE/ACS scan (429 mm/s)
[7] Exposure scan (220 mm/s)
[8] Home position search
[3] Platen APS position
[4] 1st white correction
2-6
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
SCANNER
(3) When AE/ACS has been set (the DF mode)
[1]
[2] [3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[13]
[11]
[12]
8050ma2053
[14]
[1] Home position
[2] PS1
[8] Original replacing time
[9] AE/ACS scan for the 2nd page (429 mm/s)
[10] Exposure scan for the 2nd page (220 mm/s)
[11] Original replacing time
[3] Platen APS position
[4] 1st white correction
[5] 2nd white correction
[12] AE/ACS scan for the last page (429 mm/s)
[13] Exposure scan for the last page (220 mm/s)
[14] Home position search
[6] AE/ACS scan for the 1st page (429 mm/s)
[7] Exposure scan for the 1st page (220 mm/s)
2-7
Download from Www.Somanuals.com. All Manuals Search And Download.
SCANNER
CF5001 Ver.1.0 Sep. 2003
1.2.5
APS control
The APS control is performed in the printer control board (PRCB) with signals read by the APS sensor /S
(PS3), the APS sensor /L (PS4), and the CCD sensor when the platen cover or RADF is opened/closed.
The signal is sent via the scanner drive board (SCDB) and the overall control board (OACB) (see the AFR-
20 Service manual for more detailed information on the APS control by AFR-20).
A. APS operation
The APS sensor /S (PS3) and the APS sensor /L (PS4) detect the original size in the sub-scan direction
and the CCD sensor detects the original size in the main scan direction.
B. Relationship between each of the sensors and the original size
Original size
CCD sensor
PS3
PS4
(Length of detection: mm)
(ON/OFF)
(ON/OFF)
Smallest
102
OFF
ON
OFF
OFF
OFF
ON
B5R
182
B5
257
OFF
ON
B4
257
A4R
210
ON
OFF
OFF
ON
A4
297
OFF
ON
A3
297
8.5 x 11R
8.5 x 11
8.5 x 14
11 x 17
215.9
279.4
215.9
279.4
ON
OFF
OFF
ON
OFF
ON
ON
ON
C. APS detection timing (platen mode)
The original size in the main scan direction is detected twice. The larger size is regarded as the original
size.
[1]
[2]
APS sensor /S (PS3)
APS sensor /L (PS4)
Exposure lamp (L1)
APS timing sensor (PS2)
DF reset read switch (RS1)
8050ma2009
[1] 1st original size detection
[2] 2nd original size detection
(main scan direction)
(main scan direction, sub-scan direction)
2-8
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
1.2.6 AE control
SCANNER
The CCD sensor installed on the A/D converter board (ADB) reads the copy density during the AE scan, it
performs the process responsive to the read density on the overall control board (OACB), and then it
selects the most favorable γ correction curve. The CPU on the image processing board (IPB) performs the
selection.
A. AE/ACS sampling range
The AE/ACS sampling range is identical to the read range in both the platen mode and the DF mode.
[1]
[2]
[1]
8050ma2054
[1]
[1]
[1]
10 mm
[2]
AE/ACS sampling range
1.2.7
Image processing
A. AOC (automatic offset control)
With the circuit in the CCD sensor, AOC automatically adjusts the analog offset voltage from the sensor to
be the lower limit of the A/D converter.
B. AGC (automatic gain control)
GC automatically controls the level of the analog amplification of the CCD sensor output at the shading
white correction to be the higher limit for the A/D converter.
C. Shading correction
(1) Types of the shading correction
•
•
White correction
Black correction
(2) Execution timing
•
•
At the main switch (SW2) ON
At the start of scan job
2-9
Download from Www.Somanuals.com. All Manuals Search And Download.
SCANNER
D. Other image processing
CF5001 Ver.1.0 Sep. 2003
(1) Brightness/density conversion
(2) Text/dot pattern/photo/map judgement
(3) Filtering
(4) Magnification change processing
(5) Error diffusion processing
(6) Data compression/elongation processing
(7) AE
(8) ACS
(9) Screen processing
2-10
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
WRITE
2. WRITE
2.1 Composition
A
A
B
B
CONT
CLOCK
LOCK
TEMP.ER
[23] [24] [25][26][27][28][29][30] [31]
PRCB
[1]
[22] [21] [20] [19]
[16]
[18] [17]
[2]
[6][5][4][3]
[15]
[14] [13] [12] [11]
[10] [9][8]
[7]
IPB
8050ma2010
Symbol
[1]
Name
Function or method
Cylindrical lens 1
Polygon mirror
Corrects the laser path against the angle error in the polygon mirror
Scans the laser light
[2]
Hexahedron, 51,968.51 rpm
[3]
[4]
Polygon motor /Y (M3)
Polygon motor /M (M4)
Polygon motor /C (M5)
Polygon motor /K (M6)
Temp detection board (TDB)
Drives the polygon mirror (write unit /Y)
DC brushless motor, PLL control
Drives the polygon mirror (write unit /M)
DC brushless motor, PLL control
Drives the polygon mirror (write unit /C)
DC brushless motor, PLL control
Drives the polygon mirror (write unit /K)
DC brushless motor, PLL control
Detects the temperature in the write unit (only installed on the
write unit /K)
[5]
[6]
[7]
[8]
Laser correction HP sensor /Y
Detects the home position for the cylindrical lens 2 (write unit
/Y)*1
(PS5)
[9]
Laser correction HP sensor /M
Detects the home position for the cylindrical lens 2 (write unit
/M)*1
(PS6)
[10]
[11]
[12]
Laser correction HP sensor /C
Detects the home position for the cylindrical lens 2 (write unit
/C)*1
(PS7)
Index sensor board /Y (INDX
Controls the laser writing position in the main scan direction
(write unit /Y)
SB Y)
Index sensor board /M (INDX
SB M)
Controls the laser writing position in the main scan direction
(write unit /M)
2-11
Download from Www.Somanuals.com. All Manuals Search And Download.
WRITE
Symbol
CF5001 Ver.1.0 Sep. 2003
Function or method
Name
Index sensor board /C (INDX
SB C)
[13]
Controls the laser writing position in the main scan direction
(write unit /C)
[14]
Index sensor board /K (INDX
SB K)
Controls the laser writing position in the main scan direction
(write unit /K)
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
Index lens
Collects the laser light reflected from the index mirror
Laser correction motor /Y (M7) Swing-drives the cylindrical lens 2 (write unit /Y)
Laser correction motor /M (M8) Swing-drives the cylindrical lens 2 (write unit /M)
Laser correction motor /C (M9) Swing-drives the cylindrical lens 2 (write unit /C)
Write unit /K
Write unit /C
Write unit /M
Write unit /Y
dust-proof glass
fθ lens
Write unit for black
Write unit for cyan
Write unit for magenta
Write unit for yellow
Keeps dust out from the write unit
Makes the laser scan speed uniform against the laser expo-
sure surface on the drum
[25]
[26]
[27]
[28]
[29]
[30]
[31]
Cylindrical lens 2
Corrects the laser path against the angle error in the polygon
mirror
Index mirror
Reflects the laser light to the index sensor boards /Y, /M, /C, /
K (INDX SB Y, M, C, K)
Laser drive board /Y (LDB Y)
Laser drive board /M (LDB M)
Laser drive board /C (LDB C)
Laser drive board /K (LDB K)
Collimator lens
Laser light (write unit /Y)
1 chip 1 beam method, 7 mW 650 nm
Laser light (write unit /M)
1 chip 1 beam method, 7 mW 650 nm
Laser light (write unit /C)
1 chip 1 beam method, 7 mW 650 nm
Laser light (write unit /K)
1 chip 1 beam method, 7 mW 650 nm
Collimates the diffusing laser light
*1
It is not installed on the write unit /K.
2-12
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
WRITE
2.2 Operation
2.2.1
Image writing
The RGB image data from the CCD sensor is converted into digital data, individually, in the A/D converter
board (ADB) and then, it is sent to the overall control board (OACB). The OACB converts RGB signals to
YMCK signals with the image processing board (IPB). The converted YMCK signals are divided to the
laser drive board /Y, /M, /C, /K (LDB Y, M, C, K) by the IPB. They are written on the drums for each color
with laser light from the each laser drive board.
[1]
[2]
[3]
8050ma2065
[1] Laser light
[3] Drum
[2] Polygon mirror
2.2.2
Color registration correction control
In a black-and-white copier, a transfer image formed on its drum is transferred onto paper directly; how-
ever, in this machine, a color image is split into 4 colors, yellow (Y), magenta (M), cyan (C), and black (K),
the images for each color are formed on each dedicated drum, they are combined on the transfer belt (1st
transfer), and then the combined image is transferred onto paper (2nd transfer). At the 1st transfer, the
transfer locations for each color must be matched to prevent the color drift. This control is called the color
registration correction control.
2-13
Download from Www.Somanuals.com. All Manuals Search And Download.
WRITE
CF5001 Ver.1.0 Sep. 2003
A. Types of the color registration correction control
There are following 5 color registration correction controls.
The write units are mechanically adjusted in the "Partial horizontal magnification"; however, the correction
is performed automatically in the other four.
Correction type
Drift in the main
Correction method
Adjusts the write start timing in the main scan direction
scan direction
Drift in the sub-
scan direction
Adjusts the write start timing in the sub-scan direction
Adjusts the clock frequency at write
Entire horizon-
tal magnification
Inclination
Adjusts the angle of the cylindrical lens 2
Partial horizon-
tal magnification
Adjusts the position of the write unit (parallelism
against drum)
*See adjusting the timing for the image adjustment in
36 mode
*1
*2
The relationship between 2 colors are shown in the interests of simplicity.
In "drift in the main scan direction", "Entire horizontal magnification", and "Partial horizontal magnifica-
tion", colors are intentionally drifted in the sub-scan direction to make it clear the drift between 2 colors.
B. Overview of the color registration automatic correction control
In the color registration automatic correction control, the color registration marks for each color are trans-
ferred on the transfer belt in the different transfer area. The locations are detected by the color registration
sensor /F (PS8) and the color registration sensor /R (PS9). This information is used to determine the
image drift amount for each color.
If the amount for a color is beyond the set point, adjust the image write timing, the clock frequency, and the
angle of the cylindrical lens 2 for the corresponding color are adjusted as necessary.
2-14
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
WRITE
[13]
[1]
[2]
[3]
[4]
[12]
[11]
[5]
[6]
[7]
[8]
[10]
[9]
8050ma2055
[1] Drum /Y
[8] Write unit /K
[9] Transfer belt
[2] Write unit /Y
[3] Drum /M
[10] Direction of image
[4] Write unit /M
[5] Drum /C
[11] Color registration sensor /F (PS8)
[12] Color registration sensor /R (PS9)
[13] Data processing
[6] Write unit /C
[7] Drum /K
2-15
Download from Www.Somanuals.com. All Manuals Search And Download.
WRITE
CF5001 Ver.1.0 Sep. 2003
C. Procedure for the color registration automatic correction control operation
1. Transferring the color registration mark
The color registration marks " " for each color are transferred on the transfer belt in order of black (K),
cyan (C), magenta (M), and yellow (Y). They are transferred on the front side and rear side in a line. These
locations are corresponding to the color registration sensor /F (PS8) and the color registration sensor /R
(PS9).
[7]
[1]
[2]
[3]
[4]
8050ma2056
[6]
[5]
[1] Color registration mark /K
[2] Color registration mark /C
[3] Color registration mark /M
[4] Color registration mark /Y
[5] Color registration sensor /F (PS8)
[6] Color registration sensor /R (PS9)
[7] Direction of image
2-16
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
2. Detecting the color registration mark
WRITE
PS8 and PS9 detect the edge of the color registration mark " " for each color and convert to digital sig-
nals. The edge detection for one " " is performed at four positions.
[4]
[5]
[1]
[3]
8050ma2057
[2]
[1] Direction of the edge detection (direction of
image)
[4] Color registration sensor /F, /R (PS8, PS9)
[5] Color registration mark
[2] Binarized digital signals
[3] Detection signal of the color registration sen-
sor /F, /R (PS8, PS9) (analog signal)
3. Calculating and correcting the color drift amount
The transfer belt rotates to record the passage time for each color registration mark. The passage time is
determined by the clock signal count corresponding to the detection edge of each registration mark as
shown below. The detected values from PS8 and PS9 are recorded individually.
[1]
[5]
[2]
0
1 2 3
4 5 6 7
8
[4]
150 300
180 330
[3]
8050ma2058
[1] Direction of the edge detection (direction of image)
[2] Address number of the detected edge
[3] Clock signal count value corresponding to the address for each detected edge
[4] Clock signal [5] Binarized digital signals
2-17
Download from Www.Somanuals.com. All Manuals Search And Download.
WRITE
CF5001 Ver.1.0 Sep. 2003
The passage time differences between black (K) and each color are determined from the passage times
detected at above. The time difference is called the color drift amount due to the image write timing. It also
determines the difference between the edge detection timing difference for black (K) and the edge detec-
tion timing differences for each color. It is called the color drift amount due to the angle of the write unit.
The determined value is compared with the set point and then it is corrected to meet the set point.
D. Operation condition of the color registration correction control
The color registration correction control is performed when:
•
Operation condition 1
The color registration automatic correction control is executed in the 36 mode.
Perform the operation when replacing a component described in "3. LIST OF ADJUSTMENT ITEMS "
in Field Service.
•
Operation condition 2
The machine is in a warm-up cycle, except when the fusing temperature is 70 °C or more at the start
of the warm-up cycle.
•
•
•
Operation condition 3
The specified number of page is copied/printed.
Operation condition 4
The copy/print operation has not been performed for a certain time.
Operation condition 5
A certain change in temperature is detected from the temp detection board (TDB).
Note:
• In operation condition 3, the correction control is performed by temporarily interrupting the cur-
rent job. Setting using the DIP SW of the 25 mode can nonetheless be made to let the machine
perform the correction control after completing the current job.
• For operation condition 4 and 5, the first copy/print cycle is started after the corresponding
operation condition has been met.
2-18
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRUM UNIT
3. DRUM UNIT
3.1 Composition
[26]
[25]
U
V
M14
W
PS60
PS61
[1]
[2]
[24]
[23]
[22]
DRDB/Y
1
2
3
M15
PS62
PS63
[3]
[4]
DRDB/M
1
2
3
M16
PS64
PS65
DRDB/C
1
2
3
M17
[21]
[5][6][7][8]
PS66
PS67
[27][28][29][30]
[9] [10][11][12]
DRDB/K
[13][14][15][16]
[20]
[19]
HV1
PRCB
[18]
[17]
8050ma2011
Symbol
[1]
Name
Function or method
Drum potential sensor board /Y (DRPSB Y)
Drum potential sensor board /M (DRPSB M)
Drum potential sensor board /C (DRPSB C)
Drum potential sensor board /K (DRPSB K)
Developing unit /Y
Controls the drum potential sensor /Y (DRPS Y)
Controls the drum potential sensor /M (DRPS M)
Controls the drum potential sensor /C (DRPS C)
Controls the drum potential sensor /K (DRPS K)
[2]
[3]
[4]
[5]
Deposits yellow toner to the transfer image on the drum /Y
See "4. Developing unit."
[6]
[7]
[8]
[9]
Developing unit /M
Developing unit /C
Developing unit /K
Charging /Y
Deposits magenta toner to the transfer image on the drum /M
See "4. Developing unit."
Deposits cyan toner to the transfer image on the drum /C
See "4. Developing unit."
Deposits black toner to the transfer image on the drum /K
See "4. Developing unit."
Forms a charging potential on the surface of the drum /Y
DC corona discharge (Scotron)
Wire discharge: gold-plated tungsten wire (φ 30µm)
Constant-current method DC output range: -450 to -1100µA
Grid bias: changing control plate
Constant voltage method DC output range: -200 to -850V
2-19
Download from Www.Somanuals.com. All Manuals Search And Download.
DRUM UNIT
CF5001 Ver.1.0 Sep. 2003
Function or method
Symbol
[10]
Name
Charging /M
Charging /C
Charging /K
Forms a charging potential on the surface of the drum /M
DC corona discharge (Scotron)
Wire discharge: gold-plated tungsten wire (φ 30µm)
Constant-current method DC output range: -450 to -1100µA
Grid bias: changing control plate
Constant voltage method DC output range: -200 to -950V
Forms a charging potential on the surface of the drum /C
DC corona discharge (Scotron)
[11]
[12]
Wire discharge: gold-plated tungsten wire (φ 30µm)
Constant-current method DC output range: -450 to -1100µA
Grid bias: changing control plate
Constant voltage method DC output range: -200 to -950V
Forms a charging potential on the surface of the drum /K
DC corona discharge (Scotron)
Wire discharge: gold-plated tungsten wire (φ 30µm)
Constant-current method DC output range: -450 to -1100µA
Grid bias: changing control plate
Constant voltage method DC output range: -200 to -950V
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
Pre-charging exposure lamp /Y Lowers and uniforms the drum /Y surface potential
(PCL Y) LED
Pre-charging exposure lamp /M Lowers and uniforms the drum /M surface potential
(PCL M) LED
Pre-charging exposure lamp /C Lowers and uniforms the drum /C surface potential
(PCL C) LED
Pre-charging exposure lamp /K Lowers and uniforms the drum /K surface potential
(PCL K)
LED
Cleaning blade
Cleans the drum
Drum contacting separation method
Conveys toner from the cleaning section to the toner collection section
Screw method
Toner collection screw
Grease
Assists the drum cleaning ability
Zinc stearate rod
Grease applying brush roller
Transfer belt unit
Drum /K
Applies grease to the drum surface
Drum contacting application method by brush
YMCK synthetic transfer image formation base
See "5. Transfer belt unit."
Transfer image formation base for black
OPC drum (φ 60mm)
Drum /C
Transfer image formation base for cyan
OPC drum (φ 60mm)
Drum /M
Transfer image formation base for magenta
OPC drum (φ 60mm)
Drum /Y
Transfer image formation base for yellow
OPC drum (φ 60mm)
Process unit
Color image formation section
Consists of the developing unit, drum cartridge, and transfer belt unit
2-20
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Symbol
DRUM UNIT
Name
Function or method
[27]
[28]
Drum potential sensor /K (DRPS K) Detects the surface potential of the drum /K
Drum potential sensor /C (DRPS C)
Drum potential sensor /M (DRPS M)
Detects the surface potential of the drum /C
Detects the surface potential of the drum /M
[29]
[30]
Drum potential sensor /Y (DRPS Y) Detects the surface potential of the drum /Y
DRDB/Y
Drum drive board /Y
Drive board for the drum motor /Y (M14)
Drive board for the drum motor /M (M15)
Drive board for the drum motor /C (M16)
Drive board for the drum motor /K (M17)
Drives the drum /Y
DRDB/M Drum drive board /M
DRDB/C
DRDB/K
M14
Drum drive board /C
Drum drive board /K
Drum motor /Y
M15
Drum motor /M
Drives the drum /M
M16
Drum motor /C
Drives the drum /C
M17
Drum motor /K
Drives the drum /K
PS60 Encoder sensor /Y1
PS61 Encoder sensor /Y2
PS62 Encoder sensor /M1
PS63 Encoder sensor /M2
PS64 Encoder sensor /C1
PS65 Encoder sensor /C2
Detects the rotation of the encoder for the drum /Y
Manages the drive of the drum motor /Y (M14)
There are two sensors, PS 60 and PS61, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
Detects the rotation of the encoder for the drum /Y
Manages the drive of the drum motor /Y (M14)
There are two sensors, PS 60 and PS61, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
Detects the rotation of the encoder for the drum /M
Manages the drive of the drum motor /M (M15)
There are two sensors, PS 62 and PS63, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
Detects the rotation of the encoder for the drum /M
Manages the drive of the drum motor /M (M15)
There are two sensors, PS 62 and PS63, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
Detects the rotation of the encoder for the drum /C
Manages the drive of the drum motor /C (M16)
There are two sensors, PS 64 and PS65, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
Detects the rotation of the encoder for the drum /C
Manages the drive of the drum motor /C (M16)
There are two sensors, PS 64 and PS65, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
2-21
Download from Www.Somanuals.com. All Manuals Search And Download.
DRUM UNIT
Symbol
CF5001 Ver.1.0 Sep. 2003
Function or method
Name
PS66 Encoder sensor /K1
Detects the rotation of the encoder for the drum /K
Manages the drive of the drum motor /K (M17)
There are two sensors, PS 66 and PS67, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
PS67 Encoder sensor /K2
Detects the rotation of the encoder for the drum /K
Manages the drive of the drum motor /K (M17)
There are two sensors, PS 66 and PS67, at opposite of the
encoder to cancel the rotational fluctuations due to the eccen-
tricity of the encoder
2-22
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
DRUM UNIT
3.2 Operation
3.2.1
Image formation timing
Paper feed motor (M41)
Drum motor /Y (M14)
Drum motor /M (M15)
Drum motor /C (M16)
Drum motor /K (M17)
Transfer belt motor (M18)
1st transfer pressure/release motor (M19)
2nd transfer pressure/release motor (M34)
Developing motor /Y (M20)
Developing motor /M (M21)
Developing motor /C (M22)
Developing motor /K (M23)
Pre-charging exposure lamp /Y (PCL Y)
Pre-charging exposure lamp /M (PCL M)
Pre-charging exposure lamp /C (PCL C)
Pre-charging exposure lamp /K (PCL K)
Charging /Y (HV1)
Charging /M (HV1)
Charging /C (HV1)
Charging /K (HV1)
Developing bias /Y (DC) (HV1)
Developing bias /M (DC) (HV1)
Developing bias /C (DC) (HV1)
Developing bias /K (DC) (HV1)
Developing bias /Y (AC) (HV1)
Developing bias /M (AC) (HV1)
Developing bias /C (AC) (HV1)
Developing bias /K (AC) (HV1)
1st transfer /Y (HV2)
1st transfer /M (HV2)
1st transfer /C (HV2)
1st transfer /K (HV2)
2nd transfer (HV2)
Separation (HV2)
Guide plate (HV2)
Drum separation claw solenoid (SD1)
V TOP
Paper exit sensor (PS13)
8050ma2012
[1]
[2]
[1] Paper feed start
[2] 2nd transfer cleaning
2-23
Download from Www.Somanuals.com. All Manuals Search And Download.
DEVELOPING UNIT
CF5001 Ver.1.0 Sep. 2003
4. DEVELOPING UNIT
4.1 Composition
DRIVE
CLOCK
M20
M21
M22
M23
CW
LOCK
H/L
DRIVE
CLOCK
CW
LOCK
H/L
DRIVE
CLOCK
CW
LOCK
H/L
DRIVE
CLOCK
CW
LOCK
H/L
HV1
[12][13][14][15] [16]
[8] [9] [10] [11]
[17]
[1]
[2]
[3]
PRCB
[4] [5] [6] [7]
8050ma2013
Symbol
[1]
Name
Function or method
Conveyance screw
Conveyance of developer from the agitator screw to the
developing sleeve
Screw method
[2]
[3]
Collection screw
Agitator screw
Conveyance of developer from the scraper magnet roller to
the collection sector
Screw method
Agitation of developer and the conveyance of developer to
the conveyance screw
Screw method
[4]
[5]
[6]
[7]
[8]
Toner density sensor /Y (TDS Y) Detection of toner density in the developing unit /Y
L detection method
Toner density sensor /M (TDS M) Detection of toner density in the developing unit /M
L detection method
Toner density sensor /C (TDS C) Detection of toner density in the developing unit /C
L detection method
Toner density sensor /K (TDS K) Detection of toner density in the developing unit /K
L detection method
Developing unit /Y
Adhesion of yellow toner to the image transferred on the
drum /Y
2-24
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Symbol
DEVELOPING UNIT
Name
Function or method
[9]
Developing unit /M
Adhesion of magenta toner to the image transferred on the
drum /M
[10]
[11]
[12]
Developing unit /C
Developing unit /K
Developing sleeve /Y
Adhesion of cyan toner to the image transferred on the drum /C
Adhesion of black toner to the image transferred on the drum /K
Conveyance of developer to the drum /Y surface by means of
magnetic force
Two-component developing method (yellow toner + carrier
Developing bias applied (AC + DC)
DC output range by constant voltage method: -150 to -650 V
Conveyance of developer to the drum /M surface by means of
magnetic force
[13]
[14]
[15]
Developing sleeve /M
Developing sleeve /C
Developing sleeve /K
Two-component developing method (magenta toner + carrier
Developing bias applied (AC + DC)
DC output range by constant voltage method: -150 to -650 V
Conveyance of developer to the drum /C surface by means of
magnetic force
Two-component developing method (cyan toner + carrier
Developing bias applied (AC + DC)
DC output range by constant voltage method: -150 to -650 V
Conveyance of developer to the drum /K surface by means of
magnetic force
Two-component developing method (black toner + carrier
Developing bias applied (AC + DC)
DC output range by constant voltage method: -150 to -650 V
Regulation of the spiking amount of developer on the devel-
oping sleeve
[16]
[17]
Developing regulation plate
Scraper magnet roller
Regulation plate method
Scraping of developer on the developing sleeve
Magnetic adsorption method
HV1
M20
M21
M22
M23
High voltage unit /1
Developing motor /Y
Developing motor /M
Developing motor /C
Developing motor /K
Generation of developing vias /Y, /M, /C and /K
Driving of the developing unit /Y
Driving of the developing unit /M
Driving of the developing unit /C
Driving of the developing unit /K
2-25
Download from Www.Somanuals.com. All Manuals Search And Download.
DEVELOPING UNIT
CF5001 Ver.1.0 Sep. 2003
4.2 Operation
4.2.1
Flow of developer
Developer in the developing unit, after being agitated by the agitator screw, is supplied to the developing
sleeve by the conveyance screw. At this time, the bristles amount of the developer on the developing
sleeve is regulated by the developing regulation plate. After completion of developing, the developer on the
developing sleeve is collected by the scraper magnet roller to prevent the developer immediately after com-
pletion of developing from mixing with a new developer. This secures the developing follow-up at a high
rate of printing. Collected developer is returned to the agitator screw by the collection screw. This allows
developer to make a circulation along a defined path.
[4]
[5]
[6]
[7]
Toner
[3]
[2]
[1]
8050ma2014
[1] Agitator screw
[5] Developing sleeve
[6] Scraper magnet roller
[7] Collection screw
[2] Conveyance screw
[3] Developing regulation plate
[4] Drum
4.2.2
Developing control
For details of each operation timing related to developing, see "Image formation timing" in "3. Drum unit."
4.2.3
Toner supply control to the developing unit
Each of the TDS Y, M, C and K (toner density sensors /Y, /M, /C and /K) uses the L detection method (per-
meability detection of the developer) to detect the toner density of the developer. A value thus obtained is
compared with the reference value of the toner density stored in the CPU on the printer control board
(PRCB) to check to see if the toner needs to be supplied. (For toner supply operation, see "6. Toner sup-
ply.")
2-26
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
4.2.4 Developing bias control
A. Control path
DEVELOPING UNIT
The developing bias /Y, /M, /C and /K are supplied from the high voltage unit /1 (HV1) and controlled by the
printer control board (PRCB). Each developing bias is supplied with AC + DC to secure the uniformity of
developing.
4.2.5
Durability of the developer
A. Concept of the durability of the developer
The durability (deterioration) of the developer depends on the developing sleeve drive distance (the mov-
ing distance of the developing sleeve surface) in the developing unit.
The developing sleeve drive distance includes the distance at idle time (the time when the developing
sleeve does not perform the developing operation but rotates) and the job output pattern has a significant
effect on it.
The idle time has a significant effect on the drive distance in such cases as followings.
•
Continuous copy count in a job: the rate of the idle time increases if the continuous copy count is
small.
•
•
Switching the processing speed in a job: There is the idle time at switching the processing speed.
Switching mode in ACS: There is the idle time at switching between the color mode and the black and
white mode.
•
•
The color mode operation of the black and white original in ACS: There is the idle time for the color
developing sleeves when the black and white original is printed in the color mode.
Double-sided operation: The operation is circulated in set of 4 sheets if the paper size is A4 If the copy
count is not an integral multiple of 4, for example if it is 9, only 1 sheet is circulated for the operation,
so the idle time is increased.
The relationship between the drive distance and actual copy/print count is affected by those output pat-
terns and it is hard to be defined. The count could be significantly different even if the drive distance is
same.
B. Specification of the durability of the developer
The durability of the drive distance for all color is specified as below.
Durability: 83,000km/color
As described in the previous section, the relationship between the drive distance and actual copy/print
count is hard to be defined; however, 83,000km of drive distance corresponds to 100,000 copies/prints if 5
sheets are printed intermittently in the A4 single-sided copy mode as defined for the maintenance.
2-27
Download from Www.Somanuals.com. All Manuals Search And Download.
TRANSFER BELT UNIT
CF5001 Ver.1.0 Sep. 2003
5. TRANSFER BELT UNIT
5.1 Composition
DRIVE
CLOCK
CW
M18
LD
H/L
[8]
PS69
PS68
[9]
[7]
[1]
[10]
C REG/1
C REG/2
[11]
[2]
PS15
[3]
A
A
M19
B
B
[6]
[12]
[13]
HV2
DRIVE
SD1
PRCB
8050ma2015
[6]
[5]
[14] [5]
[4]
Symbol
[1]
Name
Function or method
1st transfer roller /Y
Transfer of images from the drum /Y to the transfer belt (1st trans-
fer)
Roller transfer method with constant current DC bias applied
DC output range by the constant current method: 5 to 50 µA
Transfer of images from the drum /M to the transfer belt (1st trans-
fer)
[2]
[3]
[4]
1st transfer roller /M
1st transfer roller /C
1st transfer roller /K
Roller transfer method with constant current DC bias applied
DC output range by the constant current method: 5 to 50 µA
Transfer of images from the drum /C to the transfer belt (1st trans-
fer)
Roller transfer method with constant current DC bias applied
DC output range by the constant current method: 5 to 50 µA
Transfer of images from the drum /K to the transfer belt (1st trans-
fer)
Roller transfer method with constant current DC bias applied
DC output range by the constant current method: 5 to 50 µA
Image creation for paper transfer
[5]
[6]
Transfer belt
Semiconductor polyimide film
Separation claw unit
Paper separation assist from the transfer belt
Pressure/release method by the transfer belt separation claw sole-
noid (SD1)
[7]
[8]
Belt cleaning unit
Cleaning and collection of toner on the transfer belt
Cleaning of the transfer belt
Belt cleaning blade
Transfer belt contact/separation method
2-28
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
TRANSFER BELT UNIT
Function or method
Symbol
[9]
Name
Toner guide brush
Scraping and collection of toner on the transfer belt
[10]
Toner collection screw
Conveys toner from the belt cleaning section to the toner collec-
tion section
Screw method
[11]
[12]
Image correction unit
Detection of variety of information of images transferred on the
transfer belt
Transfer belt separation claw Paper separation assist from the transfer belt
Pressure/release method by the transfer belt separation claw sole-
noid (SD1)
[13]
[14]
2nd transfer roller /U
Toner transfer from the transfer belt to paper
Constant current DC bias applied roller method
DC output range by constant current method: +30 to -120 µA
Toner transfer from the transfer belt to paper
Pressure/release mechanism by means of cam
Driven idly by the transfer belt
2nd transfer roller /L
(Provided on ADU side)
M18
M19
SD1
Transfer belt motor
Driving of the transfer belt
DC brushless motor, PLL control
1st transfer pressure/release Pressure/release of the 1st transfer roller /Y, /M, /C, /K
motor Stepping motor
Transfer belt separation claw Pressure/release of the separation claw
solenoid
24 VDC drive
PS15 1st transfer HP sensor
Pressure/release mechanism of the 1st transfer roller /Y, /M, /C, /K
Home position detection
PS68 Encoder sensor/belt 1
Detection of the rotation of encoder for the transfer belt drive shaft
Drive control of the transfer belt motor (M18)
2 sensors of the PS68 and PS69 are provided at the opposite
position of the encoder to cancel the change of rotation caused by
the eccentricity of the encoder.
PS69 Encoder sensor/belt 2
Detection of the rotation of encoder for the transfer belt drive shaft
Drive control of the transfer belt motor (M18)
2 sensors of the PS68 and PS69 are provided at the opposite
position of the encoder to cancel the change of rotation caused by
the eccentricity of the encoder.
2-29
Download from Www.Somanuals.com. All Manuals Search And Download.
TRANSFER BELT UNIT
CF5001 Ver.1.0 Sep. 2003
5.2 Operation
5.2.1
Transfer belt pressure/release mechanism
The 1st transfer roller that presses the transfer belt against the drum is made up of the 1st transfer rollers /
Y, /M and /C for the drums /Y, /M and /C and the 1st transfer roller /K for the drum /K. The 3 1st transfer roll-
ers /Y, /M and /C of these rollers operate as a unit (color 1st transfer roller assembly).
When the 1st transfer is made from the drum to the transfer belt, the color 1st transfer roller assembly and
the 1st transfer roller /K push out the transfer belt from the inside and press it against the drum, by means
of the cam that is driven by the 1st transfer pressure/release motor (M19).
The form of pressure varies with the copy mode. In the full color mode, both of the color 1st transfer roller
assembly and the 1st transfer roller /K are pressed. However in the black-and-white mode, only the 1st
transfer roller /K is pressed.
The release condition is detected by the 1st transfer HP sensor (PS15). The cam drive position which var-
ies with the copy mode is controlled by the drive amount of the M19 which starts when the PS15 turns off.
[18]
[8]
[9]
[10]
[17]
[16]
[15]
[11]
[12]
[7]
[6]
[5]
[14]
[4]
[3]
[2]
[1]
[13]
8050ma2016
[1] When totally released
[10] Drum /M
[11] Drum /C
[12] Drum /K
[2] When in the black-and-white mode
[3] When in the full color mode
[4] 1st transfer roller /K pressure release arm
[5] Drive coupling
[13] 1st transfer roller /K
[14] 1st transfer roller /C
[6] 1st transfer roller /K pressure release cam
[7] 1st transfer roller /C pressure release cam
[8] Drum /Y
[15] 1st transfer pressure/release motor (M19)
[16] Color 1st transfer roller assembly
[17] 1st transfer roller /M
[9] Transfer belt
[18] 1st transfer roller /Y
2-30
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
TRANSFER BELT UNIT
5.2.2
Image correction unit
A. Composition
[5]
[6]
[7]
[8]
[4] [3]
[2]
[1]
DRIVE
DRIVE
PRCB
8050ma2017
Symbol
[1]
Name
Function or method
Gamma sensor shutter solenoid (SD3)
Color registration shutter solenoid (SD2)
Gamma sensor shutter
Open/close of the image density sensor shutter
24 VDC drive
[2]
[3]
Open/close of the color registration sensor shutters /F and /R
24 VDC drive
Prevention of contamination of the Dmax sensor (PS10) and
the Gamma sensor (PS11)
Open/close method by means of the image density sensor
shutter solenoid (SD3)
[4]
[5]
[6]
[7]
[8]
Gamma sensor (PS11)
Detection of the maximum density and the gamma characteris-
tics of the patch image on the transfer belt
Detection of the transfer image position on the front side in the
direction of the main scan
Color registration sensor /F (PS8)
Color registration sensor shutter /F Prevention of contamination of the color registration sensor /F
(PS9)
Color registration sensor shutter /R Prevention of contamination of the color registration sensor /R
(PS9)
Color registration sensor /R (PS9)
Detection of the transfer image position on the rear side in the
direction of the main scan
B. Shutter mechanism
The image correction unit is provided with a shutter mechanism that allows the sensor to be exposed only
when necessary to prevent the contamination of various types of sensors.
The color registration sensor shutters /F and /R that protect the color registration sensors /F and /R (PS8
and PS9) are opened and closed by the color registration shutter solenoid (SD2). And also, the image den-
sity sensor shutter that protects the gamma sensor (PS11) is opened and closed by the image density
sensor shutter solenoid (SD3).
2-31
Download from Www.Somanuals.com. All Manuals Search And Download.
TRANSFER BELT UNIT
5.2.3 1st transfer control
CF5001 Ver.1.0 Sep. 2003
Toner on the drum is transferred onto the transfer belt side by a bias value applied on the 1st transfer roller
provided inside the transfer belt.
The DC bias value of the 1st transfer roller changes according to the following conditions:
•
•
•
•
Process speed
Black-and-white mode or color mode
Humidity
No. of use counts of the 1st transfer roller
For each operation timing of the 2nd transfer control, see "Image formation timing" in "3. Drum unit."
5.2.4
2nd transfer control
Toner on the transfer belt is transferred onto the paper, which is pressed between the transfer belt and the
2nd transfer roller /L on the ADU side, is being sent.
The 2nd transfer roller /U is positioned inside the transfer belt directory above the 2nd transfer roller /L, and
applied with a DC bias value according to the following conditions:
•
•
•
•
•
Process speed
Black-and-white mode or color mode
Humidity
Type of copy paper
Front or rear side of paper
For each operation timing of the 2nd transfer control, see "Image formation timing" in "3. Drum unit."
2-32
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
TONER SUPPLY
6. TONER SUPPLY
6.1 Composition
[11]
[10]
[12] [13] [14][15]
[16]
PS14
DRIVE
DRIVE
A
A
B
B
A
A
B
B
DRIVE
CLOCK
CW/CCW
LD
H/L
A
A
B
B
A
A
B
B
DRIVE
DRIVE
[9]
[8]
[7] [6] [5] [4] [3] [2] [1]
PRCB
DRIVE
EM
8050ma2018
TSDB
Symbol
[1]
Name
Function or method
Toner bottle clutch /C (MC16)
Transmission of driving force from the toner bottle motor (M53)
to the toner bottle clutch /C
24 VDC drive
[2]
Toner bottle clutch /K (MC17)
Transmission of driving force from the toner bottle motor (M53)
to the toner bottle /K
24 VDC drive
[3]
[4]
[5]
[6]
[7]
Toner bottle motor (M53)
Driving of the toner bottles /Y, /M, /C, /K and driving of the toner
conveyance screw for each color
Driving of the toner supply screw
Stepping motor
Toner supply motor /K (M52)
Toner supply motor /C (M51)
Toner supply motor /M (M50)
Driving of the toner supply screw
Stepping motor
Driving of the toner supply screw
Stepping motor
Toner level detection sensor /K (TLD K) Detection of the toner level in the toner hopper section /K
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 690 g
[8]
Toner level detection sensor /C (TLD C) Detection of the toner level in the toner hopper section /C
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 460 g
[9]
Charging intake fan (M48)
Cooling around charging /Y, /M, /C, /K
Sirocco fan
[10]
[11]
Toner supply interlock switch (MS2)
24 VDC power line for MC13, MC14, MC15 and MC16 (toner bottle
clutch /Y, /M, /C and /K) is shut off when the toner supply door is open
Toner supply door open/close detection
Toner supply door open/close
sensor (PS54)
2-33
Download from Www.Somanuals.com. All Manuals Search And Download.
TONER SUPPLY
Symbol
CF5001 Ver.1.0 Sep. 2003
Function or method
Name
[12]
Toner level detection sensor /M Detection of the toner level in the toner hopper section /M
(TLD M)
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 460 g
[13]
Toner level detection sensor /Y Detection of the toner level in the toner hopper section /Y
(TLD Y)
(Detection is made at the remaining quantity of about 50 g)
Toner bottle capacity: Approx. 460 g
Driving of the toner supply screw
Stepping motor
[14]
[15]
Toner supply motor /Y (M49)
Toner bottle clutch /M (MC14)
Transmission of driving force from the toner bottle motor (M53)
to the toner bottle /M
24 VDC drive
[16]
Toner bottle clutch /Y (MC13)
Transmission of driving force from the toner bottle motor (M53)
to the toner bottle /Y
24 VDC drive
PS14
Toner supply unit open/close sensor
Toner supply unit open/close detection
6.2 Operation
6.2.1
Toner supply control to the toner hopper section
A. Toner supply operation
When the toner level detection sensors /Y, /M, /C and /K (TLD /Y, /M, /C, /K) detect the toner level of about
50g in the toner hopper section, the toner bottle motor (M53) and the toner bottle clutches /Y, /M, /C and /K
(MC13, MC14, MC15 and MC16) turn on and rotate the toner bottle to supply a new toner to the toner hop-
per section.
B. No-toner display on the operation LCD
When the toner level detection sensors /Y, /M, /C and /K (TLD /Y, /M, /C, /K) detect the toner level of about
50 g and no toner is supplied to the toner hopper section even after the toner supply operation above is
made, it is considered that no toner is left in the bottle. And a no-toner message is shown on the operation
LCD.
6.2.2
Toner supply control to the developing unit
A. When power on
Each of the toner density sensors /Y, /M, /C and /K (TDS Y, /M, /C and /K) detects the toner density in each
developing unit the specified period of time after the main switch (SW2) is turned on. When a value
detected at this time is below the reference value of the toner density that is stored in the CPU on the
printer control board (PRCB), the toner supply motors /Y, /M, /C and /K (M49, M50, M51 and M52) are
turned on to supply toner up to the specified density.
B. While in the copy/print operation
While in the copy/print operation, each of the toner density sensors /Y, /M, /C and /K (TDS Y, /M, /C and /K)
monitors the toner density. The output voltage of each of TDS Y, /M, /C and /K determines the length of the
toner supply time which is activated by turning on each of the toner supply motors /Y, /M, /C and /K (M49,
M50, M51 and M52) so that it becomes the reference value of the toner density.
2-34
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
6.2.3 Copy/print operation stop control due to no toner
TONER SUPPLY
After the no-toner display is shown on the operation LCD, the consumption of about 50g of remaining toner
in the toner hopper is detected by the length of time during which the toner supply motor has been driven.
When it is determined by the length of time during which the toner supply motor has been driven that there
is no remaining toner in the toner hopper, the copy/print operation is stopped according to the setting of
DIPSW 1-2/1-3 of the 25 mode.
However, according to the setting of DIPSW 1-2/1-3 of the 25 mode, when the toner density in the develop-
ing unit is below the specified value while in the stop operation, the copy/print operation will stop immedi-
ately after paper in the machine is ejected.
2-35
Download from Www.Somanuals.com. All Manuals Search And Download.
TONER COLLECTION
CF5001 Ver.1.0 Sep. 2003
7. TONER COLLECTION
7.1 Composition
[9]
DRIVE
CLOCK
F/R
[8]
M18
LOCK
H/L
[10]
[7]
[11]
[6]
[5]
DRIVE
CLOCK
F/R
[12]
M41
LOCK
H/L
[13] [14] [15]
[1]
PRCB
[2]
[4]
[3]
8050ma2019
Symbol
[1]
Name
Function or method
Waste toner door PS (PS53)
Open/close detection of the toner collection door, presence/
absence detection of the toner collection box
Discharge exit of waste toner for the toner collection box
Waste toner collection container
[2]
[3]
Waste toner discharge exit
Toner collection box
Capacity: 7.0 liters, max.
[4]
Waste toner full sensor (PS52) Toner collection box full detection (Detection made at about 5.6
liters.)
[5]
[6]
Vertical conveyance pipe
Toner rocking plate
Vertical conveyance of waste toner
Toner conveyance in the vertical conveyance pipe
Cam drive method
[7]
[8]
Belt collection pipe
Conveyance of waste toner from the transfer belt unit
Receiving port of waste toner from the transfer belt unit
Belt waste toner receiving port
2-36
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
TONER COLLECTION
Symbol
[9]
Name
Belt collection screw
Function or method
Waste toner conveyance from the belt waste toner receiving
port to the upper section of the vertical conveyance pipe
Screw method
[10]
[11]
[12]
[13]
[14]
Drum /Y waste toner receiving port Waste toner receiving port from the drum /Y
Drum /M waste toner receiving port Waste toner receiving port from the drum /M
Drum /C waste toner receiving port Waste toner receiving port from the drum /C
Drum /K waste toner receiving port Waste toner receiving port from the drum /K
Horizontal conveyance screw
Waste toner conveyance from the lower section of the vertical
conveyance pipe to the waste toner discharge exit
Screw method
[15]
Horizontal conveyance pipe
Waste toner conveyance from the vertical conveyance pipe to
the toner collection box
M18 Transfer belt motor
M41 Paper feed motor
See "5. Transfer belt unit."
See "8. Paper feed trays 1 to 3."
7.2 Operation
7.2.1
Toner collection control
Since the toner collection section is driven by the transfer belt motor (M18)and the paper feed motor (M41),
its control depends on the transfer belt drive and the paper feed drive.
7.2.2
Waste toner full detection control
When the waste toner full sensor (PS5) is kept on for a specified period of time, it is considered that the
toner collection box is full with waste toner, and a message is shown on the operation LCD.
2-37
Download from Www.Somanuals.com. All Manuals Search And Download.
PAPER FEED TRAY /1 TO /3
CF5001 Ver.1.0 Sep. 2003
8. PAPER FEED TRAY /1 TO /3
8.1 Composition
DRIVE
CLOCK
CW
PS31 PS30 PS29
M41
MC7
SD7
MC8
LOCK
H/L
PS37
PS36
PS35
DRIVE
[11] [12]
[13] [14]
[15]
PS32
PS33
PS34
VR1
MC9
SD8
M40
DRIVE
[10]
PS38
PS39
PS40
VR2
MC10
[1]
[2]
MC11
SD9
[9]
[8]
DRIVE
PS44
PS45
PS46
VR3
MC12
DRIVE
DRIVE
DRIVE
[7]
M39
PRCB
8050ma2047
[6] [5] [4]
M38
[3] PS43 PS42 PS41
Function or method
Symbol
[1]
Name
Pre-registration roller /2
Conveyance of the tray /2 paper and the paper stopper plate
for the correction of paper skew
[2]
Pre-registration roller /3
Conveyance of the tray /3 paper and the paper stopper plate
for the correction of paper skew
[3]
[4]
[5]
[6]
[7]
[8]
Double feed prevention roller /3 Double feed prevention of the tray /3 paper, Torque limiter
Feed roller /3
Feed of the tray /3 paper
Paper feed roller /3
Paper feed of the Tray /3 paper
Double feed prevention roller /2 Double feed prevention of the tray /2 paper, Torque limiter
Paper feed roller /2
Up/down plate /3
Paper feed of the tray /2 paper
Tray /3 paper stacking section
Up/down function provided
Maximum tray capacity: Up to 500 sheets (80 g/m2)
[9]
Up/down plate /2
Up/down plate /1
Tray /2 paper stacking section
Up/down function provided
Maximum tray capacity: Up to 500 sheets (80 g/m2)
[10]
Tray /1 paper stacking section
Up/down function provided
Maximum tray capacity: Up to 500 sheets (80 g/m2)
2-38
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Symbol
PAPER FEED TRAY /1 TO /3
Name
Function or method
Feed of the tray /2 paper
Double feed prevention roller /1 Double feed prevention of the tray /1 paper
[11]
[12]
[13]
[14]
[15]
Feed roller /2
Paper feed roller /1
Feed roller /1
Paper feed of the tray /1 paper
Feed of the tray /1 paper
Pre-registration roller /1
Conveyance of the tray /1 paper and the paper stopper plate
for the correction of paper skew
M41
M38
M39
M40
MC7
Paper feed motor
Driving of the paper feed system
24 VDC drive, DC brushless motor, PLL control
Driving of the up/down plate /3
Tray up drive motor /3
Tray up drive motor /2
Tray up drive motor /1
Paper feed clutch /1
24 VDC drive, DC brushless motor
Driving of the up/down plate /2
24 VDC drive, DC brushless motor
Driving of the up/down plate /1
24 VDC drive, DC brushless motor
Transmission of the driving force from the paper feed motor
(M41) to the paper feed roller /1
24 VDC drive
MC8
MC9
Pre-registration clutch /1
Paper feed clutch /2
Transmission of the driving force from the paper feed motor
(M41) to the pre-registration roller /1
24 VDC drive
Transmission of the driving force from the paper feed motor
(M41) to the paper feed roller /2
24 VDC drive
MC10 Pre-registration clutch /2
MC11 Paper feed clutch /3
Transmission of the driving force from the paper feed motor
(M41) to the pre-registration roller /2
24 VDC drive
Transmission of the driving force from the paper feed motor
(M41) to the paper feed roller /3
24VDC drive
MC12 Pre-registration clutch /3
Transmission of the driving force from the paper feed motor
(M41) to the pre-registration roller /3
24 VDC drive
SD7
SD8
SD9
Pick-up solenoid /1
Pick-up solenoid /2
Pick-up solenoid /3
Transmission of the driving force of the tray /1 paper feed
Transmission of the driving force of the tray /2 paper feed
Transmission of the driving force of the tray /3 paper feed
Detection of paper conveyance at the pre-registration roller /1 entrance
Detection of the upper limit of the tray /1 paper
Detection of the presence of the tray /1 paper
Detection of the remaining paper in the tray /1
Detection of the paper size along the length of the tray /1
Detection of the paper size along the length of the tray /1
Detection of paper conveyance at the pre-registration roller /2 entrance
Detection of the upper limit of the tray /2 paper
Detection of the presence of the tray /2 paper
Detection of the remaining paper in the tray /2
Detection of the paper size along the length of the tray /2
PS29 Pre-registration sensor /1
PS30 Tray upper limit sensor /1
PS31 No paper sensor /1
PS32 Remaining paper sensor /1
PS33 Paper size /S1
PS34 Paper size /L1
PS35 Pre-registration sensor /1
PS36 Tray upper limit sensor /2
PS37 No paper sensor /2
PS38 Remaining paper sensor /2
PS39 Paper size /S2
2-39
Download from Www.Somanuals.com. All Manuals Search And Download.
PAPER FEED TRAY /1 TO /3
CF5001 Ver.1.0 Sep. 2003
Function or method
Symbol
Name
PS40 Paper size /L2
Detection of the paper size along the length of the tray /2
Detection of paper conveyance at the pre-registration roller /3 entrance
Detection of the upper limit of the tray /3 paper
PS41 Pre-registration sensor /3
PS42 Tray upper limit sensor /3
PS43 No paper sensor /3
PS44 Remaining paper sensor /3
PS45 Paper size /S3
Detection of the presence of the tray /3 paper
Detection of the remaining paper in the tray /3
Detection of the paper size along the length of the tray /3
Detection of the paper size along the length of the tray /3
Detection of the paper size along the width of the tray /1
Detection of the paper size along the width of the tray /2
Detection of the paper size along the width of the tray /3
PS46 Paper size /L3
VR1
VR2
VR3
Paper size VR/1
Paper size VR/2
Paper size VR/3
8.2 Operation
Since the composition and the operation of the paper feed trays /1 to /3 are the same, the explanation is
given of the paper feed tray /1 only. The paper feed trays /2 and /3 are the same as the paper feed tray /1.
The intermediate conveyance sensor /1 (PS27) and the intermediate conveyance clutch /1 (MC13) are not
used in the paper feed control in the paper feed tray /1.
8.2.1
Paper feed control
[1]
Paper feed motor (M41)
Pick-up solenoid /1 (SD7)
Paper feed clutch /1 (MC7)
Pre-registration clutch /1 (MC8)
Pre-registration sensor /1 (PS29)
Intermediate conveyance sensor /1 (PS27)
Intermediate conveyance clutch /1 (MC13)
8050ma2048
[2]
[3]
[1] START button (ON)
[3] 2nd sheet pre-registration loop
[2] 1st sheet pre-registration loop
2-40
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
8.2.2 Up/down plate control
The up/down plate in the paper feed tray is driven by the wire.
PAPER FEED TRAY /1 TO /3
When the paper feed tray /1 is set to the main body, the tray up drive motor /1 (M40) of the main body
starts to rotate. As a result, the wire is wound around the drive pulley and the up/down plate goes up.
When the tray upper limit sensor /1 (PS30) detects the upper limit of paper, the M40 turns off. When the
amount of paper gets reduced as a result of the passage of paper, a no paper detection is made by the
PS30. At this time, the M40 keeps on until the PS30 detects the upper limit of paper again. Accordingly,
paper is lifted up to the fixed level at all times.
When the paper feed tray /1 is pulled out, the coupling is released from the drive section and the up/down
plate goes down by its own weight.
8.2.3
Remaining paper detection control
The amount of remaining paper is detected by the remaining paper sensor /1 (PS32). As the amount of
paper in the tray is getting reduced, the actuator provided at the front of the tray rotates gradually. The
PS32 turns on and off each time a slit in the actuator passes through. The main body control section
counts the number of on/off's of the PS9 after the installation of the tray to detect the amount of remaining
paper in 4 steps.
The detection of no paper is made by the no paper sensor /1 (PS31).
No. of the slit counts
Remaining paper in the tray Indication of remaining amount
on the operation board
0
1
2
3
100 to 75 %
75 to 50 %
50 to 25 %
25 to 0 %
4 lit
3 lit
2 lit
1 lit
[2]
[1]
[3]
[6] [5]
[4] Slit 2
[4]
8050ma2049
[1] Rotational direction when the up/down plate goes up
[2] Remaining paper sensor /1 (PS32)
[3] Slit 1
[5] Slit 3
[6] Actuator
2-41
Download from Www.Somanuals.com. All Manuals Search And Download.
PAPER FEED TRAY /1 TO /3
8.2.4 Paper size detection control
CF5001 Ver.1.0 Sep. 2003
The main scan direction is detected by the resistance value of the paper size VR/1 (VR1) of the bottom of
the paper feed tray.
The sub-scan direction is detected in the combination of the on/off of the paper size /S1 (PS33) of the up/
down plate and the paper size /L1 (PS34).
.
Paper size
13 x 19R
Paper size /S
Paper size /L
Paper size VR
333.2
317.0
307.4
292.8
280.4
280.4
252.4
252.4
235.8
235.8
216.7
216.7
151.3
151.3
141.9
151.3
97.3
{
{
{
{
{
{
{
{
{
12.6 x 18R/17.7R
A3 wide
12 x 18R
A3R
A4
8.5 x 11R
11 x 17R
8K
{
{
16K
B4R
{
{
B5
8.5 x 14R
8.5 x 11R
A4R
F4
{
B5R
A5R
43.2
8.5 x 5.5R
30.0
{: Sensor on
VR: VR angle
2-42
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
BY-PASS FEED
9. BY-PASS FEED
9.1 Composition
DRIVE
CLOCK
F/R
MC6
SD5
M41
LOCK
H/L
PRCB
DRIVE
1
2
M35
CVDB
8050ma2020
[9]
[8] [7]
[6] [5]
Name
[4]
[3] [2]
[1]
Function or method
Symbol
[1]
Paper size/LBP (PS49)
No paper sensor/BP (PS47)
Paper size/SBP (PS48)
Paper size detection along the length of the by-pass tray
Detection of the presence of the by-pass feed paper
Assistance of paper size detection along the width of the by-
pass tray
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Paper size/VR/BP (VR4)
Paper feed roller/BP
Double feed prevention roller/BP
Feed roller/BP
Paper size detection along the width of the by-pass tray
Paper feed
Double feed prevention of paper, Torque limiter
Feeding of paper
Tray upper limit sensor/BP (PS25)
By-pass conveyance sensor
(PS26)
By-pass tray paper upper limit detection
By-pass exit paper conveyance detection
M41
M35
Paper feed motor
See "8. Paper feed tray 1 to 3."
Tray up drive motor/BP
By-pass tray up/down plate drive
DC motor with brush
MC6
SD5
Paper feed clutch/BP
Pick-up solenoid/BP
Transmission of the by-pass tray paper feed power
Transmission of the by-pass tray paper feed power
2-43
Download from Www.Somanuals.com. All Manuals Search And Download.
BY-PASS FEED
CF5001 Ver.1.0 Sep. 2003
9.2 Operation
9.2.1
Tray up drive control
When Pick-up solenoid/BP (SD5) turns on after the paper feed motor (M41) turns on, the up/down plate is
raised with paper going up.
When pulling out ADU, coupling comes off the drive section and the up/down plate comes down by its own
weight.
9.2.2
Paper feed control
[1]
Paper feed motor (M41)
Pick-up solenoid/BP (SD5)
Paper feed clutch/BP (MC6)
By-pass conveyance sensor (PS26)
8050ma2021
[1] START button (ON)
9.2.3
Paper size detection control
The paper size in the by-pass tray is detected along the length by the paper size/SBP (PS48) and the
paper size/LBP (PS49), and along the width by the paper size VR/BP (VR4).
2-44
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
VERTICAL CONVEYANCE
10.VERTICAL CONVEYANCE
10.1 Composition
DRIVE
CLOCK
CW
MC13
M41
LOCK
H/L
PRCB
[1]
[2]
PS50
PS51
8050ma2050
Symbol
[1]
Name
Function or method
Vertical conveyance door
Intermediate conveyance roller /1
Paper feed motor
Cleaning paper jam in the vertical conveyance section
Paper conveyance of the trays /2 and /3
See "8. Paper feed tray 1 to 3."
[2]
M41
MC13 Intermediate conveyance clutch /1 Transmission of driving force from the paper feed motor
(M41) to the intermediate conveyance roller /1
24 VDC drive
PS50 Vertical conveyance sensor
PS51 Vertical conveyance door sensor
Paper detection in the vertical conveyance section
Open/close detection of the vertical conveyance door
10.2 Operation
10.2.1 Vertical conveyance control
For operation timing of the vertical conveyance control, see "8. Paper feed tray /1 to /3."
2-45
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
11.REGISTRATION/ADU/REVERSE/PAPER EXIT
11.1 Composition
PS24
[4] PS13 [5] [6] [7] [8] [9] [10] [11]
[21]
PS55
PS12
PS19
[12] [13] [14] [15] [16] [17] [18] [19] PS27 [20]
PS28
[3]
[2] [1]
PS22
PS23
PS20
PS21
MC2
MC1
MC3
MC5
MC4
M41
HV2
M33
M32
M30
M31
M34
CVDB
PRCB
8050ma2022
Symbol
[1]
Name
Function or method
ADU conveyance roller /2
Paper conveyance while in the double side copy mode and
loop formation for the correction of paper skew correction
Motor drive
[2]
ADU reverse roller
Paper conveyance in the ADU reverse section and switching
of the conveyance path
Motor drive
[3]
[4]
[5]
Reverse/exit roller /2
Paper exit roller
Reverse gate
Paper conveyance in the reverse section
Motor drive
Paper conveyance in the paper exit section
Motor drive
Switching of the paper exit path at the fixing unit exit section
Solenoid drive
2-46
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Symbol
REGISTRATION/ADU/REVERSE/PAPER EXIT
Name
Function or method
Paper conveyance and paper curl correction in the reverse section
Motor drive
[6]
[7]
[8]
[9]
Decurler roller
Fixing section
Fixing of paper that has been transferred
See "12. Fixing Section."
ADU conveyance roller /1
Paper conveyance while in the double side copy mode
Motor drive
Separation discharge plate unit Separation of the transfer belt and the paper that has been
transferred
Constant current AC + DC bias applied neutralizing method
Constant current method AC output range: 0 to 300 µA
Constant voltage method DC output range: -60 to 0 µA
[10]
2nd transfer roller /L
Transfer of toner from the transfer belt onto paper
Pressure/release mechanism by means of cam
Driven idly by the transfer belt
[11]
[12]
Transfer belt unit
Image formation for paper transfer
See "5. Transfer belt unit."
Pre-transfer guide plate
Conveyance guide of paper supplied
High voltage applied to prevent toner adhesion: -500 V 50
V (constant voltage)
[13]
[14]
Pressure arm
2nd transfer roller /L pressure/release
Motor drive
Registration roller
For paper conveyance in the registration section and the cor-
rection of paper skew caused by the paper stopper
Motor drive
[15]
[16]
Registration cleaning sheet
Loop roller
Cleaning of the registration roller
PET method
For paper conveyance in the registration section and loop for-
mation while in paper skew correction
Motor drive
[17]
[18]
ADU pre-registration roller
For paper conveyance while in the double side copy mode
and the correction of paper skew correction caused by the
paper stopper
Motor drive
Intermediate conveyance roller /3
Paper conveyance from the paper feed trays /1 to /3, the by-
pass tray and LCT
Motor drive
[19]
[20]
[21]
HV2
By-pass tray
By-pass paper feed
See "9. By-pass feed section."
Intermediate conveyance roller /2
ADU lock solenoid (SD6)
High voltage unit /2
Paper conveyance from the paper feed trays /1 to /3 and LCT
Motor drive
ADU lock
24 VDC drive
Supply of high voltage to the separation discharge plate unit
and the pre-transfer guide plate
Pressure rise method by the inverter from 24 VDC
2-47
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
Symbol
M30
Name
Function or method
Registration roller drive
Registration roller motor
Stepping motor
M31
M32
M33
Loop roller motor
ADU reverse motor
Reverse/exit motor
Loop roller drive
Stepping motor
ADU reverse roller drive
Stepping motor
Driving of the paper exit roller, decurler roller and the reverse/
exit roller /2
Stepping motor
M34
M41
2nd transfer pressure/release
motor
Pressure arm drive
Stepping motor
Paper feed motor
M41 Paper feed motor Driving of ADU conveyance rollers 1/
and 2/, ADU pre-registration
roller and the intermediate conveyance rollers /2 and /3
DC brush-less motor
MC1
MC2
MC3
MC4
MC5
SD4
ADU conveyance clutch /2
ADU conveyance clutch /1
ADU pre-registration clutch
Transmission of driving force from the paper feed motor (M41)
to the ADU conveyance roller /2
24 VDC drive
Transmission of driving force from the paper feed motor (M41)
to the ADU conveyance roller /1
24 VDC drive
Transmission of driving force from the paper feed motor (M41)
to the ADU pre-registration roller
24 VDC drive
Intermediate conveyance clutch /2 Transmission of driving force from the paper feed motor (M41)
to the intermediate conveyance roller /2
24 VDC drive
Intermediate conveyance clutch /3 Transmission of driving force from the paper feed motor (M41)
to the intermediate conveyance roller /3
24 VDC drive
Reverse/exit solenoid
Reverse gate drive
24 VDC drive
PS12 Paper exit full sensor
PS13 Paper exit sensor
Paper exit tray full detection
Photo sensor + actuator
Detection of paper in the paper exit unit
Photo sensor + actuator
PS19 Reverse/exit sensor
PS20 ADU conveyance sensor
PS21 ADU paper reverse sensor
PS22 Registration sensor
Detection of paper in the reverse section
Photo sensor + actuator
Detection of paper at the ADU reverse path entrance
Photo sensor + actuator
Detection of paper in the ADU reverse section
Photo sensor + actuator
Detection of paper in the registration section
Photo sensor
PS23 ADU pre-registration sensor
Detection of paper in the ADU paper loop section
Photo sensor + actuator
2-48
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
Symbol
REGISTRATION/ADU/REVERSE/PAPER EXIT
Function or method
Name
PS24 2nd transfer HP sensor
2nd transfer roller home position detection
Photo sensor
PS27 Intermediate conveyance sen-
sor /1
Detection of paper at the intermediate conveyance roller /2
exit
Photo sensor
PS28 Intermediate conveyance sen-
sor /2
Detection of paper at the intermediate conveyance roller /3
exit
Photo sensor
ADU open/close detection
Photo sensor
PS55 Conveyance lever sensor
11.2 Operation
11.2.1 Switching control of the paper exit/ADU conveyance path
A. Straight paper exit path
The straight paper exit path is applicable to the face-up paper exit after completion of copy in the single
side copy mode, as well as after completion of the back side copy in the double side copy mode.
[5]
[6]
[4]
[3]
[2]
[1]
8050ma2023
[1] Fixing paper exit sensor (PS17)
[2] Reverse gate
[4] Paper exit roller
[5] Paper exit sensor (PS13)
[6] Fixing section
[3] Paper exit full sensor (PS12)
2-49
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
B. ADU conveyance path
The ADU conveyance path is applicable to the face-down paper exit in the single side copy mode and the
conveyance to the ADU after completion of the front side copy in the double sided copy mode.
[1]
[5]
[2]
[3]
[4]
8050ma2024
[1] Fixing section
[4] Reverse/exit sensor (PS19)
[5] Reverse gate
[2] Fixing paper exit sensor (PS17)
[3] Decurler roller
2-50
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
REGISTRATION/ADU/REVERSE/PAPER EXIT
C. Straight paper exit operation (single sided 2 copies)
[1]
Paper feed motor (M41)
Registration roller motor (M30)
Fixing motor (M29)
F
R
H
M
L
Reverse/exit motor (M33)
F
R
L
M
H
Reverse/exit solenoid (SD4)
Fixing exit sensor (PS17)
Reverse/exit sensor (PS19)
Paper exit sensor (PS13)
V TOP
8050ma2025
[2] [3]
[1] START button (ON)
[3] 1st paper exit
[2] Completion of the first sheet fixing
2-51
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
D. ADU conveyance operation (double sided 2 copies)
[1]
Paper feed motor (M41)
Registration roller motor (M30)
Fixing motor (M29)
F
R
H
M
L
Reverse/exit motor (M33)
F
R
L
M
H
Reverse/exit solenoid (SD4)
Fixing exit sensor (PS17)
Reverse/exit sensor (PS19)
Paper exit sensor (PS13)
V TOP
8050ma2026
[2]
[3] [4]
[1] START button (ON)
[3] Completion of the back side fixing of 1st paper
[4] 1st paper exit
[2] Completion of the front side fixing of 1st paper
2-52
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
11.2.2 Reverse/exit control
A. Reverse/exit path
REGISTRATION/ADU/REVERSE/PAPER EXIT
The reverse/exit path is applicable to the face-down paper exit after completion of copy in the single side
copy mode, as well as after completion of the back side copy in the double sided copy mode.
Double sided copy mode
Face-down
[7]
[8]
[9]
2
[6]
[5]
[1]
[2]
[3]
[4]
1
8050ma2027
[1] Fixing paper exit sensor (PS17)
[2] Decurler roller
[6] Paper exit roller
[7] Paper exit sensor (PS13)
[8] Reverse gate
[3] Reverse/exit sensor (PS19)
[4] Reverse/exit roller /2
[9] Fixing section
[5] Paper exit full sensor (PS12)
2-53
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
B. Reverse/exit operation (single sided 2 copies)
[1]
Paper feed motor (M41)
Registration roller motor (M30)
Fixing motor (M29)
F
R
H
M
L
Reverse/exit motor (M33)
F
R
L
M
H
Reverse/exit solenoid (SD4)
Fixing exit sensor (PS17)
Reverse/exit sensor (PS19)
Paper exit sensor (PS13)
V TOP
8050ma2028
[2]
[3]
[1] START button (ON)
[2] 1st paper exit
[3] 2nd paper exit
11.2.3 ADU conveyance control
Paper that has been copied on the front side and conveyed to the reverse/exit section while in the double
side copy mode is conveyed to the ADU reverse section by the reverse/exit roller /2.
2-54
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
REGISTRATION/ADU/REVERSE/PAPER EXIT
11.2.4 Paper reverse control
A. Paper reverse path
(1) When conveying paper
Paper conveyed from the reverse/exit roller /2 is conveyed to the ADU reverse roller according to the form
of the conveyance path.
[4] [3]
[2]
[1]
8050ma2029
[1] ADU paper reverse sensor (PS21)
[2] ADU reverse roller
[3] ADU conveyance roller /1
[4] Reverse/exit roller /2
(2) When paper reverse
Paper conveyed to the ADU reverse section is sent back by the reverse rotation of the ADU reverse roller.
At this time, it is conveyed to the ADU conveyance roller /1, not to the reverse/exit roller /2, according to the
form of the conveyance path. As a result, the paper is flipped over out. The paper thus reversed is con-
veyed to the loop roller through the ADU conveyance rollers /1 and /2 and the ADU pre-registration roller to
be copied on the back side.
[8] [7]
[6]
[5] [4] [3]
[2]
[1]
8050ma2030
[1] Loop roller
[5] ADU reverse roller
[2] ADU pre-registration roller
[3] ADU conveyance roller /2
[6] ADU conveyance sensor (PS20)
[7] ADU conveyance roller /1
[8] Reverse/exit roller /2
[4] ADU paper reverse sensor (PS21)
2-55
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
B. Paper reverse operation
[1]
Paper feed motor (M41)
Registration roller motor (M30)
ADU reverse motor (M32)
F
R
Reverse/exit sensor (PS19)
ADU paper reverse sensor (PS21)
V TOP
8050ma2031
[2][3] [4][5]
[1] START button (ON)
[4] Start of 2nd paper conveyance
[2] Start of 1st paper conveyance
[3] Start of reverse operation of 1st paper
[5] Start of reverse operation of 2nd paper
2-56
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
REGISTRATION/ADU/REVERSE/PAPER EXIT
11.2.5 ADU pre-registration control
The paper conveyed from the ADU switchback section is formed into a loop between the ADU conveyance
roller /2 and the ADU pre-registration roller, and a paper skew is corrected.
A. ADU pre-registration path
[2]
[3] [4]
[5]
8050ma2032
[1]
[1] ADU pre-registration loop
[4] ADU pre-registration roller
[5] Loop roller
[2] ADU conveyance roller /2
[3] ADU pre-registration sensor (PS23)
B. ADU pre-registration operation
[1]
Paper feed motor (M41)
Registration roller motor (M30)
ADU pre-registration clutch (MC3)
ADU conveyance clutch /2 (MC1)
Registration sensor (PS22)
ADU conveyance sensor (PS20)
ADU pre-registration sensor (PS23)
V TOP
8050ma2033
[2]
[3]
[1] START button (ON)
[3] 2nd paper: ADU pre-registration loop
[2] 1st paper: ADU pre-registration loop
2-57
Download from Www.Somanuals.com. All Manuals Search And Download.
REGISTRATION/ADU/REVERSE/PAPER EXIT
CF5001 Ver.1.0 Sep. 2003
11.2.6 Registration control
Paper conveyed to the loop roller is formed into a loop between the registration roller and the loop roller,
and paper skew is corrected.
A. Registration path
[6]
[7]
[8]
8050ma2034
[5]
[4]
[3]
[2]
[1]
[1] Intermediate conveyance roller /2
[2] Loop roller
[5] 2nd transfer roller
[6] Transfer belt unit
[3] Registration loop
[7] Registration sensor (PS22)
[4] Registration roller
[8] Intermediate conveyance sensor /2 (PS28)
B. Registration operation
[1]
Paper feed motor (M41)
Registration roller motor (M30)
Loop roller motor (M31)
Intermediate conveyance sensor /2 (PS28)
Registration sensor (PS22)
V TOP
8050ma2035
[2]
[3]
[1] START button (ON)
[3] 2nd paper: Registration loop
[2] 1st paper: Registration loop
2-58
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
REGISTRATION/ADU/REVERSE/PAPER EXIT
11.2.7 2nd transfer control
The paper that has been conveyed from the registration roller undergoes the 2nd transfer by the pressure
of the 2nd transfer roller /L on the transfer belt.
A. 2nd transfer roller /L pressure/release mechanism
[6]
[3]
[4]
[5]
[2]
[1]
8050ma2036
[1] Release
[2] Pressure
[4] Cam
[5] Pressure arm
[3] Transfer belt unit
[6] 2nd transfer roller /L
B. 2nd transfer roller /L pressure/release operation
For timing of each operation of the 2nd transfer control, see "3. Drum unit section."
11.2.8 Paper exit full detection control
When the paper exit full sensor (PS12) is turned on and is kept in this condition during exiting a specified
number of papers or for a specified period of time, it is considered that the paper exit tray is full with paper
and a message is shown on the operational LCD.
2-59
Download from Www.Somanuals.com. All Manuals Search And Download.
FIXING UNIT
CF5001 Ver.1.0 Sep. 2003
12.FIXING UNIT
12.1 Composition
[2] L4
L3 L2 [1] TH3 TH1
TH4
PS17
FHCB
ACDB
[3]
TH2
TS2
[4]
CLOCK
F/R
LOCK
H/L
PS16
CVDB
M29
Name
M54
TS1
8050ma2043e
Symbol
[1]
Function or method
Fixing roller /U
Toner fixing by means of pressure and heating
Heating roller method
Silicon rubber + PFA resin layers
Temperature: 210 °C
[2]
Fixing roller /L
Toner fixing by means of pressure and heating
Heating roller method (driven by the fixing roller /U)
Pressure/release by means of cam drive
Silicon rubber + PFA resin layers
Temperature: 190 °C
[3]
[4]
Cleaning roller
Cleaning web
Fixing motor
Cleaning of the fixing roller /U
Cleaning of the cleaning roller
M29
Driving of the fixing roller /U
Fixing roller /L pressure/release drive
24V brushless DC motor
M54
Web motor
Driving of the cleaning web, Synchronous motor
PS16 Fixing pressure release sensor Fixing roller /L pressure/release HP detection
PS17 Fixing paper exit sensor
Paper exit detection from fixing
2-60
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
FIXING UNIT
Symbol
L2
Name
Function or method
Heating of the fixing roller /U (main)
Fixing upper lamp /1
Halogen heater 750 W
L3
Fixing upper lamp /2
Heating of the fixing roller /U (sub)
Halogen heater 750 W
L4
Fixing lower lamp
Heating of the fixing roller /L
Halogen heater 550 W
TH1
TH2
TH3
Fixing temperature sensor /1
Fixing temperature sensor /2
Fixing temperature sensor /3
Temperature detection at the center of the fixing roller /U (main)
Non-contact microthermistor
Temperature detection at the center of the fixing roller /L (main)
Non-contact microthermistor
Temperature detection at the edge (at rear) of the fixing roller /U
(sub)
Contact thermistor
TH4
TS1
TS2
Fixing temperature sensor /4
Thermostat /1
Temperature detection at the edge (at rear) of the fixing roller /L
(sub)
Contact thermistor
Fixing roller /U temperature abnormality detection
Non-contact bimetal
Set temperature: 190 °C
Thermostat /L
Fixing roller /L temperature abnormality detection
Non-contact bimetal
Set temperature: 160 °C
FHCB Fixing heater control board
Prevention of noise leak in the drive power for the fixing upper
lamp /1, /2 (L2, L3) 220 V system only
2-61
Download from Www.Somanuals.com. All Manuals Search And Download.
FIXING UNIT
CF5001 Ver.1.0 Sep. 2003
12.2 Operation
12.2.1 Fixing drive control
Paper is conveyed with the heated fixing roller /U and the heated fixing roller /L pressed together, and is
fixed with toner. The pressure of the fixing roller is released at idling.
A. Fixing drive operation
The driving force of the fixing roller (M29) [1] is transmitted through the gear to the fixing roller [2] and the
fixing paper exit roller [3]. There is a one-way clutch [4] provided between M29 and fixing roller /U, and the
transmission of driving force when M29 rotates in the normal direction is limited only to the fixing roller /U
and the fixing paper exit roller.
The same shaft of the one-way clutch [4] is provided with another one-way clutch [5] which is a transmis-
sion to the pressure/release drive cam mechanism [6]. The one-way clutches [4] and [5] operate one way
in the opposite direction of each other.
[2]
[3]
[1]
8050ma2044
[6]
[4]
[5]
[4]
2-62
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
FIXING UNIT
12.2.2 Pressure/release control
The pressure of the fixing roller /L onto the fixing roller /U is made by the reverse rotation of the fixing
motor (M29) and the cam mechanism.
A. Pressure/release operation
When the fixing motor (M29) [1] rotates in the reverse direction, the cam mechanism applies pressure (a
broken line in the drawing) onto the fixing roller /L [3]. There is a one-way clutch [4] provided between M29
and the cam mechanism to provide the transmission of driving force when M29 is rotating reversely, this
force is limited only to the cam. The detection of pressure/release is made by the fixing pressure release
sensor (PS16) provided on the same shaft as the cam.
[1]
[4]
[3]
8050ma2045
[2]
B. Pressure/release control
Pressure on the fixing roller /L is released while in warm-up. When copy starts, the fixing motor (M29)
rotates reversely to apply pressure, and it stops when the fixing pressure release sensor (PS16) turns off.
The unit is now in the pressured state. M29 returns to the forward rotation to convey paper.
[2]
[3]
Fixing motor (M29) Forward
Backward
Fixing pressure release sensor (PS16)
8050ma2046
[1]
[1] START button (ON)
[2] Pressure operation
[3] Fixing paper in conveyance
2-63
Download from Www.Somanuals.com. All Manuals Search And Download.
FIXING UNIT
12.2.3 Web control
CF5001 Ver.1.0 Sep. 2003
The web motor (M54) is driven for a specified period of time for each print to clean the fixing roller /U
through the cleaning roller.
The operation of M54 starts at the same time as the registration roller motor (M30). In order to make web
travel distance even on the cleaning roller, the ON time of M54 is determined by the accumulated M54
drive time.
12.2.4 Temperature control
The fixing roller /U is heated by the fixing upper lamp /1 (L2) and the fixing upper lamp /2 (L3). The fixing
roller /L heated by the fixing lower lamp /2 (L4). L2 and L3 are connected in parallel and they turn on and
off at the same time.
the fixing temperature sensor /1 (TH1) and the fixing temperature sensor /3 (TH3) detect the temperature
of the fixing roller /U and control it by turning on and off L2 and L3 through the AC drive board (ACDB) so
that it is held at the specified temperature.
In the same way, the fixing temperature sensor /2 (TH2) and the fixing temperature sensor /4 (TH4) detect
the temperature of the fixing roller /L to turn on and off L4.
A. Warm-up
The moment the main switch (SW2) turns on, the lighting circuits of the fixing upper lamps 1/ and /2 (L2,
L3) and the fixing lower lamp /2 (L4) inside the AC drive board (ACDB) turn on. L2, L3 and L4 are kept on
until a specified temperature is obtained.
After completion of warming-up, the printer control board (PRCB) controls the L2, L3 and L4 so that the set
temperature is maintained while in idling. At this time, L2, L3, and L4 are not turned on simultaneously.
Warm-up time: 420 sec. or less in Metric/390 sec. or less in Inch (at room temperature of 20 °C)
B. Protection against abnormality
Thermostats are employed to protect the fixing roller against its abnormal temperature rise. The fixing
roller /U is provided with thermostat /1 (TS1) and the fixing roller /L is provided with thermostat /2 (TS2)
respectively.
When TS1 detects an abnormal temperature, the flow of electricity to the fixing upper lamp /1 (L2) and the
fixing upper lamp /2 (L3) is shut off at the same time.
And when TS2 detects an abnormal temperature, the flow of electricity to the fixing lower lamp /2 (L4) is
shut off.
2-64
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
INTERFACE
13.INTERFACE
13.1 Composition
[1]
[2]
[3]
[4]
[5]
8050ma2037
Symbol
[1]
Name
Function or method
Video interface for controller
Serial port (RS-232C)
For controller
[2]
For RD-mode communications
D-SUB 9-pin connector
[3]
[4]
[5]
Parallel port (based on IEEE 1284) For ISW of copier
36-pin centronics connector
For ISW of copier
Serial port (USB Type B)
RJ45 Ethernet connector
Ver.1.1
Port for network
2-65
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE STABILIZATION CONTROL
CF5001 Ver.1.0 Sep. 2003
14.IMAGE STABILIZATION CONTROL
14.1 Toner density control
The purpose of this control is to correct the reference value of toner density for each color against variable
factors of the image density such as environmental factors.
A. Explanation of the operation
The charging amount of toner changes depending on the environmental factors such as the temperature
and humidity.
And in proportion to the length of time since developer was last used, toner tends to be hard to get
charged.
The reference value of toner density is varied to correct these change in the charging amount of toner.
B. Timing of the operation
•
•
When the environmental factors such as the temperature and/or humidity change.
For each elapsed hour of the use of developer
14.2 Dmax control
The purpose of the Dmax control is to set the highest image density for each color to the reference level.
The Dmax control is carried out by the gamma sensor (PS11), drum motors /Y, /M, /C and /K (M14, M15,
M16 and M17), transfer belt motor (M18), 1st transfer pressure/release motor (M19) and the developing
motors /Y, /M, /C and /K (M20, M21, M22 and M23), and controlled by the printer control board (PRCB).
Related sensors include the temperature/humidity sensor (TEMP/HUM).
A. Explanation of the operation
With a patch image created on the transfer belt at the maximum exposure amount, each density is read by
the gamma sensor (PS11). This operation is repeated several times while changing a developing bias
value each time. The developing bias value obtained when the density reaches the reference level is
stored as an optimum developing bias value of the machine and developing is made at this developing bias
value.
B. Timing of the operation
•
•
•
When the main switch (SW2) is turned on for the first time in 6 hours or more after it was turned off.
When the job starts 6 hours or more after the SW2 has been turned on.
Every 1,000 pages of output. However at the time of completion of the job, when the 1,000th page is
contained in the job.
•
When the humidity has changed more than 30 % RH from the value measured at the last operation.
2-66
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
IMAGE STABILIZATION CONTROL
14.3 Charging potential control
14.3.1 Correction of the reference value
The purpose of this control is to set the charging potential for each color to the reference level.
The charging potential control is carried out by the drum potential sensors /Y, /M, /C and /K (DRPS Y, M, C
and K), drum potential sensor boards /Y, /M, /C and /K (DRPSB Y, M, C and K), drum motors /Y, /M, /C and
/K (M14, M15, M16 and M17), and the developing motors /Y, /M, /C and /K (M20, M21, M22 and M23), and
controlled by the printer control board (PRCB). Related sensors include the temperature/humidity sensor
(TEMP/HUM).
A. Explanation of the operation
Based on the DC bias value determined by the Dmax control, the grid voltage is corrected by using an out-
put value read from the drum potential sensor so that the value becomes a charging potential shifted by
the specified value from this DC bias value.
B. Timing of the operation
•
•
•
When the main switch (SW2) is turned on for the first time in 6 hours or more after it was turned off.
When the job starts 6 hours or more after the SW2 has been turned on.
Every 1,000 pages of output. However at the time of completion of the job, when the 1,000th page is
contained in the job.
•
•
When the humidity has changed more than 30% RH from the value measured at the last operation.
When the job starts where the process speed is slowed down to 1/2 or 1/3 speed. However, once
operated under this condition after the SW2 turns on, the operation is not carried out again until the
SW2 turns off.
14.3.2 Low humidity environment correction
When in a low humidity environment, the humidity is lower in the enclosed area (near the cleaning section)
along the drum circumference. This result in an uneven charging potential along the circumference of the
drum. Accordingly, this correction method is used to prevent these conditions from happening.
A. Explanation of the operation
To ease the influence on the drum caused by the ambient humidity around the drum, the drum for each
color is rotated 45° periodically while in idling.
B. Timing of the operation
•
The drums are turned once every 3 minutes when the humidity gets below 30% RH.
2-67
Download from Www.Somanuals.com. All Manuals Search And Download.
IMAGE STABILIZATION CONTROL
CF5001 Ver.1.0 Sep. 2003
14.4 Dot diameter adjustment control
The dot diameter adjustment control is a method by which intermediate exposure potential is output stably,
regardless of the changes in the sensitivity of photosensitive materials or the stain of the writing system.
The laser output is controlled by the printer control board (PRCB) so that the intermediate exposure poten-
tial that is determined by the PWM128 value for each color is between a developing bias value determined
by the Dmax control and a maximum exposure potential.
A. Explanation of the operation
The drum potential exposed with a PWM128 value is read by the drum potential sensor and the MPC value
for the laser is corrected to be within the standard value.
B. Timing of the operation
•
•
•
When the main switch (SW2) is turned on for the first time in 6 hours or more after it was turned off.
When the job starts 6 hours or more after the SW2 has been turned on.
Every 1,000 pages of output. However at the time of completion of the job, when the 1,000th page is
contained in the job.
•
•
When the humidity has changed more than 30% RH from the value measured at the last operation.
When the job starts where the process speed gets slow down to 1/2 or 1/3 speed. However, once
operated under this condition after the SW2 turns on, the operation is not carried out under this condi-
tion until the SW2 turns off.
14.5 Gamma correction control
The gamma correction control detects the gamma characteristics of the image density against the expo-
sure amount in the image creation section (drum and transfer belt) for each color, to make the relationship
between the original density and the copy density become the set one.
The gamma correction control is carried out by the gamma sensor (PS11), drum motors /Y, /M, /C and /K
(M14, M15, M16 and M17), transfer belt motor (m18), 1st transfer pressure/release motor (M19) and the
developing motors /Y, /M, /C and /K (M20, M21, M22 and M23), and controlled by the printer control board
(PRCB). Related boards and sensors include the drum potential sensor boards /Y, /M, /C and /K (DRPSB
Y, M, C and K), drum potential sensor /Y, /M, /C and /K (DRPS Y, M, C and K) and the temperature/humid-
ity sensor (TEMP/HUM).
A. Explanation of the operation
The gradation patch is created on the transfer belt and read by the gamma sensor (PS11). The correction
value for the gamma curve is determined by the sensor output value with the predefined relationship
between the sensor output and the output image.
B. Timing of the operation
•
•
•
When the main switch (SW2) is turned on for the first time in 6 hours or more after it was turned off.
When the job starts 6 hours or more after the SW2 has been turned on.
Every 1,000 pages of output. However at the time of completion of the job, when the 1,000th page is
contained in the job.
•
•
When the humidity has changed more than 30% RH from the value measured at the last operation.
When the job starts where the process speed gets slow down to 1/2 or 1/3 speed. However, once
operated under this condition after the SW2 turns on, the operation is not carried out again until the
SW2 turns off.
2-68
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
OTHER CONTROLS
15.OTHER CONTROLS
15.1 Parts to which power is supplied even when the reset switch is
turned off
SW1
CBR1
NF
CBR2
8050ma2038
ACDB
Regardless of the on/off position of the reset switch (SW1), the following components are supplied with
power so long as the power cord is plugged into the power outlet.
A. Circuit breakers /1 and /2 (CBR 1 and 2)
When more than a specified amount of current flows due to the short-circuit of internal parts, it turns off to
shut off the current to the machine.
B. Noise filter (NF)
This reduces the level of noise that enters through the power line.
C. AC drive board (ACDB)
This supplies AC power to each unit and turns on and off the fixing heater lamps and the heaters.
2-69
Download from Www.Somanuals.com. All Manuals Search And Download.
OTHER CONTROLS
CF5001 Ver.1.0 Sep. 2003
15.2 Parts that operate only when the power switch is turned on
15.2.1 Parts that operate when the reset switch is turned on
SW2
5VDC
REMOTE
SW1
DCPS1
OACB
3.3VDC
5VDC
12VDC
IPB
5VDC
12VDC
OB1
5VDC
12VDC
24VDC
DF-319
(OPTION)
PRCB
FS-115/215
(OPTION)
LT-211
(OPTION)
5VDC
5VDC
TSDB
CVDB
ACDB
DCPS2
RL2
24VDC
RL3
TRNS1
TRNS2
HTR1,2
Fixing unit
RL1
DCPS4
(OPTION)
8050ma2039
When the reset switch (SW1) turns on, AC power is supplied to the DC power unit /1 (DCPS1), AC drive
board (ACDB) and the DC power unit /4: optional (DCPS4).
As a result, DCPS1 supplies 5 VDC to the overall control board (OACB) to monitor it with the main switch
(SW2).
The ACDB turns ON the HTR relay (RL3) in the board and provides 24 VAC to each heater via the trans-
former/main body (TRNS1) and the transformer/LCT (TRNS2).
15.2.2 Parts that operate when the main switch is turned on
When the main switch (SW2) is turned on, the overall control board (OACB) detects this condition and
sends a control signal to the DC power unit /1 (DCPS1) and the AC drive board (ACDB).
As a result, DCPS1 supplies 3.5 VDC, 5 VDC, 12 VDC and 24 VDC to all the boards and optional devices.
The ACDB turns ON the HTR relay (RL3) in the board and provides 24 VAC to each heater via the trans-
former/main body (TRNS1) and the transformer/LCT (TRNS2).
2-70
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
OTHER CONTROLS
15.3 Fan control
15.3.1 Fan composition
DRIVE
EM
H/L
DRIVE
EM
H/L
[14]
DRIVE
EM
[15] [16] [17]
[18]
DRIVE
EM
H/L
H/L
[13]
[19]
DRIVE
EM
H/L
SCDB
DRIVE
EM
DRIVE
EM
[1]
DRIVE
EM
H/L
DRIVE
EM
H/L
[2]
[3]
[12]
DRIVE
EM
H/L
DRIVE
EM
H/L
DRIVE
EM
H/L
[4]
[5]
DRIVE
EM
H/L
DRIVE
EM
H/L
DRIVE
EM
H/L
[11]
DRIVE
EM
H/L
DRIVE
EM
H/L
[6]
[7]
[10]
DRIVE
EM
H/L
[9]
TSDB
DRIVE
EM
PRCB-2/2
FRONT
[8]
PRCB-1/2
8050ma2040
Symbol
[1]
Name
Function or method
Write exhaust fan /1 (M45)
Write intake fan /1 (M43)
Write exhaust fan /2 (M46)
IP cooling fan (M25)
Writing section cooling
Writing section cooling
Writing section cooling
[2]
[3]
[4]
Cooling of the overall control board (OACB)
Cooling of the image processing board (IPB)
Writing section cooling
[5]
IPB cooling fan (M24)
[6]
Write intake fan /2 (M44)
DCPS cooling fan (M42)
Paper exit fan /F (M28)
Charging intake fan (M48)
Paper exit fan /R (M26)
Paper exit fan /M (M27)
Transfer belt cooling fan (M11)
Fixing cooling fan /1 (M10)
Fixing cooling fan /3 (M36)
Fixing cooling fan /2 (M37)
Drum cooling fan /1 (M12)
Drum cooling fan /2 (M13)
Scanner cooling fan (M2)
Drum unit fan (M47)
[7]
Cooling around DC power unit /1 (DCPS1)
Cooling around the paper reverse exit section and cooling of paper
Adverse wind to the charging corona
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
Cooling around the paper reverse exit section and cooling of paper
Cooling around the paper reverse exit section and cooling of paper
Cooling around the transfer belt
Cooling around the fixing section of the paper exit side
Cooling around the fixing section
Cooling around the fixing section
Discharging heat around the drum drive motor out of the machine
Discharging heat around the drum drive motor out of the machine
Cooling of the scanner section
Cooling around the drum
2-71
Download from Www.Somanuals.com. All Manuals Search And Download.
OTHER CONTROLS
CF5001 Ver.1.0 Sep. 2003
15.4 Operation board control
15.4.1 Operation board composition
TOUCH PANEL
BOARD
LCDB
OB INVB
OB3
OB1
OB2
SW2
8050ma2041
OACB
Symbol
[1]
Name
Function or method
Touch panel board
Touch switch board used to directly select items shown on the
LCD board (LCDB)
LCDB LCD board
Information of all sorts is displayed on this
Inverter that drives the LCD board (LCDB)
Control of the touch panel board, LCD board (LCDB), OB
inverter board (OB INVB), operation board /3 (OB3), and the
control of the LED within the operation board /1 (OB2) and
the numeric pad
OB INVB OB inverter board
OB1
Operation board /1
OB2
OB3
SW2
Operation board /2
Operation board /3
Main switch
LED-loaded board to grasp the on/off condition of the reset
switch (SW1)
Volume loaded board to adjust the brightness of the LCD
board (LCDB)
Power switch of the operation board
It does not function when the reset switch (SW1) is off
2-72
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
OTHER CONTROLS
15.5 Counter control
15.5.1 Counter composition
OACB
C(T)
OB1
C(BK)
C(K)
OPTION
OPTION
[1]
COIN VENDOR
(SERIAL)
PS13
8050ma2042
PRCB
Symbol
[1]
Name
Coin vendor (serial)
(Optional)
Function or method
Copying is controlled depending on the presence of a coin.
(Serial connection)
OB1
C(T)
Operation board /1
Total counter
This displays a copy count
This displays a total cumulative copy count in all copy modes
Mechanical counter driven by an electric signal
This displays a cumulative copy count in the black-and-white
copy mode
C(BK) Black counter
Mechanical counter driven by an electric signal
This is a counter that makes a copy operation unavailable
when a specified number of copies has been counted
Mechanical counter driven by an electric signal
This detects paper in the paper exit section and sends a con-
trol signal to each counter
C(K)
Key counter (optional)
PS13 Paper exit sensor
Photo sensor + actuator
15.5.2 Counter operation
This machine uses a counter on the software to count a number of copies.
A. Paper exit counter
The counter takes the count of 1 every time the paper exit sensor (PS13) turns off from on. In the double
side copy mode, however, this takes the count of 2.
B. Copy counter on OB1
This displays the number of copies that have been discharged.
C. C (T)
This counts up in conjunction with the paper exit counter.
2-73
Download from Www.Somanuals.com. All Manuals Search And Download.
OTHER CONTROLS
CF5001 Ver.1.0 Sep. 2003
D. C (BK)
This counts up in conjunction with the paper exit counter.
E. C (K)
This counts up in conjunction with the paper exit counter.
F. Signals in serial connection
Connector
37
Pin No.
Signal name
OP_SOUT
OP_DTR
OP_CTS
OP_SIN
OP_DSR
OP_RTS
SGND
In/Out
Out
Out
In
Description
1
2
Open collector output (LS07)
Open collector output (LS07)
5 V Pull up
3
4
In
5 V Pull up
5
In
5 V Pull up
6
Out
—
Open collector output (LS07)
Signal ground
7
8
COPV_ENB
24 VDC
In
5 V Pull up
9
—
Power supplied to the vendor
Power ground
10
11
PGND
—
5 VDC
—
Power supplied to the vendor
G. Signals for status indicator lights
Connector Pin No. Signal name Description
Output timing
Type of signal
391
1A
DC24V
Power source of At all times
status indicator
light
24 V,
500 mA
9B
2A
PGND
PAT1
Power ground
—
—
Light on signal
L signal outputted when print is
available
Open collec-
tor
5 V, 200 mA
3A
4A
PAT2
PAT3
L signal outputted while scanner or
printer in operation
L signal outputted when stopped
abnormally due to jamming, abnor-
mal code, no paper or no toner
5A
PAT4
L signal outputted when a toner
supply warning is displayed
2-74
Download from Www.Somanuals.com. All Manuals Search And Download.
CF5001 Ver.1.0 Sep. 2003
OTHER CONTROLS
15.6 ACS control
15.6.1 Switching between the color mode and the black and white mode
If more than 5 black and white sheets are fed consecutively from RADF in which both the color sheets and
the black and white sheets are stored, the pressure on the 1st transfer rollers /Y/M/C are released and it
shifts to the black and white mode. At this time, the switch is performed during JOB, so there is a time lag
between the color copy and the black and white copy.
A. Switching sequence from the color mode to the black and white mode
1. The 2nd transfer for the previous copy sheet (color) is complete.
2. The pressure is executed on the 1st transfer roller /K (the 1st transfer rollers /Y/M/C are in release
state).
3. Writing /K is started.
4. Terminate the operation of the drum unit /Y/M/C, the developing unit /Y/M/C, and the toner supply
unit /Y/M/C.
B. Switching sequence from the black and white mode to the color mode
1. The color print is instructed.
2. The 2nd transfer for the previous copy sheet (black and white) is complete.
3. Start the operation of the drum unit /Y/M/C, the developing unit /Y/M/C, and the supply unit /Y/M/C.
4. MPC or APC is executed for the write unit /Y/M/C.
5. The pressure is executed on the 1st transfer roller /Y/M/C/K.
6. Writing /Y is started.
15.6.2 Copy count when using ACS
•
There are following two kinds of copy count when using ACS.
A. The black and white mode (the 1st transfer roller /Y/M/C is in the release state)
Black and white original
Total counter
Counts as black and white
Counts as black and white
Developer counter
B. The color mode (the 1st transfer roller /Y/M/C is in the pressure state)
Color original
Black and white original
Total counter
Counts as color
Counts as color
Counts as black and white
Counts as color *1
Developer counter
*1If the original is black and white, the output will be black and white; however, the developer counter
counts it as color copy and the total counter counts it as black and white copy.
2-75
Download from Www.Somanuals.com. All Manuals Search And Download.
OTHER CONTROLS
CF5001 Ver.1.0 Sep. 2003
Blank Page
2-76
Download from Www.Somanuals.com. All Manuals Search And Download.
Copyright
2003 KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
Printed in Japan
Use of this manual should be strictly supervised to
avoid disclosure of confidential information.
7661-4969-11 0309xxxx
Download from Www.Somanuals.com. All Manuals Search And Download.
|