Chapter 7
7-4
Step 1: primary charging
In this step, the surface of the photosensitive drum is charged to an even negative potential to prepare for the formation of an image. The machine uses a roller
charging method, in which charges are directly applied to the surface of the photosensitive drum.
The machine's primary charging roller is made from conducting rubber, and is given both AC and DC biases to keep the surface potential of the photosensitive drum
even.
F-7-4
Step 2: laser beam exposure
In this step, a static image is formed on the surface of the photosensitive drum.
The negatively charged surface of the photosensitive drum is exposed by a laser beam. As a result, those areas hit by the beam are neutralized (light area), thus
eliminating negative charges and consequently forming a static image on the surface.
F-7-5
Photosensitive drum
DC bias
AC bias
Primary charging roller
Dark area
Light area
Laser beam
Содержание iR C2880 series
Страница 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series ...
Страница 2: ......
Страница 6: ......
Страница 23: ...Chapter 1 Introduction ...
Страница 24: ......
Страница 26: ......
Страница 52: ......
Страница 53: ...Chapter 2 Installation ...
Страница 54: ......
Страница 127: ...Chapter 3 Basic Operation ...
Страница 128: ......
Страница 130: ......
Страница 136: ......
Страница 137: ...Chapter 4 Main Controller ...
Страница 138: ......
Страница 160: ......
Страница 161: ...Chapter 5 Original Exposure System ...
Страница 162: ......
Страница 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69 ...
Страница 189: ...Chapter 6 Laser Exposure ...
Страница 190: ......
Страница 192: ......
Страница 206: ......
Страница 207: ...Chapter 7 Image Formation ...
Страница 208: ......
Страница 256: ......
Страница 257: ...Chapter 8 Pickup Feeding System ...
Страница 258: ......
Страница 262: ......
Страница 303: ...Chapter 9 Fixing System ...
Страница 304: ......
Страница 306: ......
Страница 321: ...Chapter 10 Externals and Controls ...
Страница 322: ......
Страница 326: ......
Страница 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled ...
Страница 337: ...Chapter 10 10 11 F 10 11 ...
Страница 359: ...Chapter 11 MEAP ...
Страница 360: ......
Страница 362: ......
Страница 401: ...Chapter 12 RDS ...
Страница 402: ......
Страница 404: ......
Страница 411: ...Chapter 13 Maintenance and Inspection ...
Страница 412: ......
Страница 414: ......
Страница 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4 ...
Страница 421: ...Chapter 14 Standards and Adjustments ...
Страница 422: ......
Страница 424: ......
Страница 431: ...Chapter 15 Correcting Faulty Images ...
Страница 432: ......
Страница 434: ......
Страница 459: ...Chapter 16 Self Diagnosis ...
Страница 460: ......
Страница 462: ......
Страница 481: ...Chapter 17 Service Mode ...
Страница 482: ......
Страница 484: ......
Страница 571: ...Chapter 18 Upgrading ...
Страница 572: ......
Страница 574: ......
Страница 603: ...Chapter 19 Service Tools ...
Страница 604: ......
Страница 605: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools 19 1 19 1 2 Solvents and Oils 19 2 ...
Страница 606: ......
Страница 609: ...Aug 29 2006 ...
Страница 610: ......