Chapter 8
8-21
8.4.4 Transfer Roller Engagement/disengagement Control
0019-8979
Overview
In the machine, the transfer roller is engaged with or disengaged from the photosensitive drum via the ETB to reduce the color photosensitive drum consumption
at monochrome printing.
The transfer roller engagement/disengagement control is executed at the following timing.
- Multiple initial rotations at power-on
- Multiple initial rotations at door closing
- Image stabilization control
- Printing operation
The status of engagement/disengagement during printing operation differs depending on the printing mode (monochrome or color mode).
This control works with the developing cylinder engagement/disengagement operation.
T-8-4
*: Thick paper, envelope, rough paper, small-size paper, thin paper (H/H environment), thin paper (when thin paper/rough paper is specified in the
special control mode)
Color mode
Transfer roller
Developing cylinder
Color printing
All color cylinders are engaged.
All color cylinders are engaged.
Monochrome printing
Plain paper, Transparency
Only the black color cylinder is engaged.
Only the black color cylinder is engaged.
Others*
All color cylinders are engaged.
Power-off/standby
All color cylinders are disengaged.
All color cylinders are disengaged.
MEMO:
- The photosensitive drum consumption is affected by the drum rotation time.
At monochrome printing of plain paper or transparency, the photosensitive drums of Y, M, and C are disengaged from the ETB so that they do not rotate. In this
condition, the sheet is attracted to the ETB by an attraction bias and fed to the black color photosensitive drum.
However, when feeding thick paper and envelopes, the photosensitive drums of Y, M, and C are engaged with the ETB because the absorption power by the
attraction bias is weak for such media.
- This control is executed every time the printing mode is switched. When mixed printing of color and monochrome is performed, the print speed is reduced due to
engagement/disengagement of the transfer roller.
Service mode:
To prevent reduction of the print speed at mixed printing of color and monochrome, set the transfer roller to color mode (in which all color transfer rollers are engaged
with the photosensitive drum).
COPIER> FUNCTION> SPLMAN> SPL53649
However, when this setting is made, the color photosensitive drum is consumed even at the time of monochrome printing.
Содержание iR C1020 Series
Страница 1: ...Sep 8 2008 Service Manual iR C1020 Series iR C1021i ...
Страница 2: ......
Страница 6: ......
Страница 18: ...Contents ...
Страница 19: ...Chapter 1 Introduction ...
Страница 20: ......
Страница 22: ......
Страница 57: ...Chapter 2 Installation ...
Страница 58: ......
Страница 60: ......
Страница 73: ...Chapter 3 Basic Operation ...
Страница 74: ......
Страница 76: ......
Страница 81: ...Chapter 4 Main Controller ...
Страница 82: ......
Страница 84: ......
Страница 97: ...Chapter 5 Original Exposure System ...
Страница 98: ......
Страница 100: ......
Страница 112: ......
Страница 113: ...Chapter 6 Original Feeding System ...
Страница 114: ......
Страница 116: ......
Страница 132: ......
Страница 133: ...Chapter 7 Laser Exposure ...
Страница 134: ......
Страница 136: ......
Страница 143: ...Chapter 8 Image Formation ...
Страница 144: ......
Страница 146: ......
Страница 180: ......
Страница 181: ...Chapter 9 Pickup and Feed System ...
Страница 182: ......
Страница 213: ...Chapter 9 9 29 F 9 79 1 2 3 ...
Страница 214: ......
Страница 215: ...Chapter 10 Fixing System ...
Страница 216: ......
Страница 218: ......
Страница 233: ...Chapter 11 External and Controls ...
Страница 234: ......
Страница 263: ...Chapter 12 e maintenance imageWARE Remote ...
Страница 264: ......
Страница 266: ......
Страница 275: ...Chapter 12 12 9 F 12 27 ...
Страница 280: ......
Страница 281: ...Chapter 13 Maintenance and Inspection ...
Страница 282: ......
Страница 284: ......
Страница 286: ......
Страница 287: ...Chapter 14 Measurement and Adjustments ...
Страница 288: ......
Страница 290: ......
Страница 293: ...Chapter 15 Correcting Faulty Images ...
Страница 294: ......
Страница 296: ......
Страница 304: ...Chapter 15 15 8 15 3 2 2 Fans 0019 5064 F 15 11 T 15 3 Notation Name FM1 main unit fan FM2 duplex fan FM2 FM1 ...
Страница 313: ...Chapter 15 15 17 F 15 19 21 22 28 29 30 31 24 14 15 16 23 26 25 32 27 20 19 18 17 2 13 6 10 33 1 8 4 3 12 11 5 7 9 ...
Страница 317: ...Chapter 16 Error Code ...
Страница 318: ......
Страница 320: ......
Страница 331: ...Chapter 16 16 11 ...
Страница 332: ......
Страница 333: ...Chapter 17 Special Management Mode ...
Страница 334: ......
Страница 336: ......
Страница 343: ...Chapter 17 17 7 ...
Страница 344: ......
Страница 345: ...Chapter 18 Service Mode ...
Страница 346: ......
Страница 348: ......
Страница 388: ......
Страница 389: ...Chapter 19 Upgrading ...
Страница 390: ......
Страница 392: ......
Страница 396: ...Chapter 19 19 4 3 Click Next F 19 4 4 Select a USB connected device and click Next F 19 5 ...
Страница 397: ...Chapter 19 19 5 5 Click Start F 19 6 6 Click Yes F 19 7 Download will be started F 19 8 ...
Страница 399: ...Chapter 19 19 7 ...
Страница 400: ......
Страница 401: ...Chapter 20 Service Tools ...
Страница 402: ......
Страница 404: ......
Страница 407: ...Sep 8 2008 ...
Страница 408: ......