R76-/R76-2
OKIFAX 5700/5900
A3 - 23
A3.1.12 Electrophotographic Process
The electrophotographic processing is outlined below. The electrophotographic printing
process is shown in Figure 2-4.
1
Charging
The surface of the image drum is charged uniformly with a negative charge by applying
the negative voltage to the charge roller.
2
Exposure
Light emitted from the LED head irradiates the negatively charged surface of the image
drum. The surface potential of the irradiated portion of the image drum surface be-
comes lower, forming the electrostatic latent image associated with the print image.
3
Developing and toner recovery
When the negatively charged toner is brought into contact with the image drum, it is
attracted to the electrostatic latent image by static electricity, making the image visible.
At the same time, the residual toner on the image drum is attracted to the developing
roller by static electricity.
4
Transfer
When paper is placed over the image drum surface, the positive charge which is
opposite is polarity to that of the toner, is applied to the reverse side of the paper by
the transfer roller. The toner is attracted by the positive charge and is transferred onto
the paper. This results in the transfer of the toner image formed on the image drum
onto the paper.
5
Temporary cleaning
Residual toner which remains on the image drum without being transferred is evened
out by the cleaning roller and is temporarily attracted to the cleaning roller by static
electricity.
6
Fusing
The toner image transferred onto the paper is fused to the paper by heat and pressure.
An electrophotographic process timing chart is shown in Figure 2-5.
Содержание OKIFAX 5700
Страница 6: ...CHAPTER 1 GENERAL INFORMATION ...
Страница 90: ...CHAPTER 2 INSTALLATION PROCEDURE ...
Страница 102: ...OKIFAX 5700 5900 2 12 3 Document stacker Hang the document stacker onto hanging position ...
Страница 204: ...OKIFAX 5700 5900 2 114 Typical Transmission flow ...
Страница 205: ...OKIFAX 5700 5900 2 115 Typical Reception flow ...
Страница 210: ...CHAPTER 3 BRIEF TECHNICAL DESCRIPTION ...
Страница 218: ...CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY ...
Страница 223: ...OKIFAX 5700 5900 4 5 Appearance of the OKIFAX 5700 5900 ...
Страница 248: ...CHAPTER 5 ADJUSTMENTS ...
Страница 252: ...CHAPTER 6 CLEANING AND MAINTENANCE ...
Страница 278: ...CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIFAX 5700 5900 ...
Страница 326: ...Appendix A PC Board Descriptions and Operation FirstEdition February 1999 Oki Data Corporation ...
Страница 390: ...C34 OKIFAX 5700 5900 A3 40 IC201 Pin Assignment ...
Страница 405: ...Appendix B DescriptionsofPrintOperation ThirdEdition December 1998 Oki Data Corporation ...
Страница 427: ...Appendix C Not used at this time ...
Страница 430: ...OKIFAX 5700 5900 D 1 Section 1 CABINET ASSEMBLY ...
Страница 432: ...OKIFAX 5700 5900 D 3 Section 2 CONTROL PANEL ASSEMBLY ...
Страница 434: ...OKIFAX 5700 5900 D 5 Section 3 PRINTER ASSEMBLY 53 54 ...
Страница 437: ...OKIFAX 5700 5900 D 8 Section 4 BASE ASSEMBLY ...
Страница 439: ...OKIFAX 5700 5900 D 10 Section 5 FRAME ASSEMBLY SCANNER L ...
Страница 441: ...OKIFAX 5700 5900 D 12 Section 6 FRAME ASSEMBLY SCANNER U ...
Страница 443: ...OKIFAX 5700 5900 D 14 Section 7 CABLES OPTION BOARDS ...
Страница 445: ...Appendix E Not used at this time Oki Data Corporation ...
Страница 446: ...Appendix F Not used at this time Oki Data Corporation ...
Страница 447: ...Appendix G PC Loading FirstEdition February 1999 Oki Data Corporation ...
Страница 465: ...Appendix H RMCS SYSTEM MANUAL For Model 30 FirstEdition Oki Data Corporation ...
Страница 466: ......