Chapter 8
8-18
8.4 Transfer Unit
8.4.1 ETB Unit
0019-8976
The ETB unit transfers toner into paper while feeding the paper.
The ETB unit consists of the ETB, ETB tension roller, ETB feed roller, ETB slave roller, attraction roller, and transfer roller.
The ETB motor (M5) rotates the ETB feed roller, and this drive rotates the ETB. All of other rollers are driven by the ETB.
At the time of printing, the fed paper is attracted to the ETB by the attraction roller, and transported according to the rotation of the ETB. During transportation,
toner is transferred by the photosensitive drum and transfer roller of each color. After the toner is transferred, the paper is separated from the ETB by the ETB feed
roller.
Especially at the time of color printing, high accuracy is requested for paper feeding by the ETB because one image is formed with four color toners overlapped.
The ETB is also used for image stabilization control. When image gradation corrective control or color displacement corrective control is executed, the pattern
image for color displacement or image gradation correction is written on the ETB.
The ETB unit executes the following three major controls.
- Automatic bias control
- ETB cleaning
- Transfer roller engagement/disengagement control
F-8-24
M5
ETB motor
DC controller PCB
ETB motor
control signal
ETB engaged roller
ETB tension roller
ETB
Photosensitive
drum
ETB feed roller
Attraction roller
Transfer rollers
Transfer roller
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: ......