40838301TH Rev.1
3 - 2
Process
Illustration
Description
3.1
Fundamentals of the Electro-Photographic Process
The electro-photographic process involves six sub-processes:
(1) Charging (2) Exposure (3) Development (4) Transfer (5) Fusing (6) Cleaning
Outline of each process is explained below.
The surface of the electro-photo-
graphic Image drum is uniformly
charged with negative charges by
applying a negative voltage to the
charge roller.
When the applied DC voltage exceeds
a threshold value, charging of the drum
begins.
Light emitted from the LED head
irradiates the negatively charged
surface.
The potential of the irradiated part of
the Image drum surface is raised, so
that an electrostatic latent image
associated with the print image is
formed.
Toner is attracted to the exposed part
(high-potential part) of the Image drum
at the contact between the Image drum
and the developing roller, making the
electrostatic latent image visible.
At the same time, the residual toner on
Charging
1
Charge roller
EP drum
Development
3
Power
Supply
Charge roller
EP drum
Exposure
2
LED head
EP drum
Developing roller
Power
Supply
Содержание OKIFAX 5400
Страница 7: ...40838301TH Rev 1 CHAPTER 1 GENERAL INFORMATION...
Страница 46: ...40838301TH Rev 1 CHAPTER 2 INSTALLATION PROCEDURE...
Страница 130: ...40838301TH Rev 1 CHAPTER 3 BRIEF TECHNICAL DESCRIPTION...
Страница 138: ...40838301TH Rev 1 CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY...
Страница 157: ...40838301TH Rev 1 CHAPTER 5 ADJUSTMENTS...
Страница 162: ...40838301TH Rev 1 CHAPTER 6 CLEANING AND MAINTENANCE...
Страница 189: ...40838301TH Rev 1 CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIFAX 5400...
Страница 240: ...40838301TH Rev 1 CHAPTER 8 DIPSWITCHS SETTING TABLES...
Страница 353: ...40838301TH Rev 1 Appendix B Descriptions of Print Operation First Edition August 1999 Oki Data Corporation...
Страница 375: ...40838301TH Rev 1 Appendix C Circuit Diagram and Parts List OK IFAX 5400 First Edition August 1999 Oki Data Corporation...
Страница 380: ...40838301TH Rev 1 D 2 SECTION 1 CABINET ASSEMBLY 5...
Страница 382: ...40838301TH Rev 1 D 4 SECTION 2 CONTROL PANEL ASSEMBLY...
Страница 384: ...40838301TH Rev 1 D 6 SECTION 3 PRINTER ASSEMBLY 51...
Страница 387: ...40838301TH Rev 1 D 9 SECTION 4 BASE ASSEMBLY 30 37 36 39 40 5...
Страница 390: ...40838301TH Rev 1 D 12 SECTION 5 SCAN UNIT...
Страница 392: ...40838301TH Rev 1 D 14 SECTION 6 PAPER GUIDE U ASSEMBLY...
Страница 394: ...40838301TH Rev 1 D 16 SECTION 7 CABLES 10 11 19 12 20 21...
Страница 396: ...40838301TH Rev 1 D 18 SECTION 8 OPTION TELEPHONE US...
Страница 399: ...40838301TH Rev 1 D 21 SECTION 8 OPTION TELEPHONE UK ITA NOR DEN BEL...
Страница 402: ...40838301TH Rev 1 D 24 SECTION 8 OPTION TELEPHONE HOL GER FRA SWITZ AUT INT L...
Страница 405: ...40838301TH Rev 1 Appendix E Board Layout OKIFAX 5400 First Edition August 1999 Oki Data Corporation...
Страница 424: ...40838301TH Rev 1 F 15 5 2 PCB Layout TQSB 2PCB PU FG CONTROLLER MOTOR DRIVER SEN2 MOTOR OSC SEN1...
Страница 425: ...40838301TH Rev 1 F 16 Figure 6 1 6 PARTS LIST SECTION1 CABINET CASSETTE ASSEMBLY F 16 1 4 P 6 5 8 7 3 O 1 2...
Страница 426: ...40838301TH Rev 1 F 17 SECTION2 MECHANICAL ASSEMBLY Figure 6 2 F 16 2 9 A 0 C M L D N E F G H U V T S Q R J I B K A A B B...
Страница 428: ...40838301TH Rev 1 Appendix G RMCS SYSTEM MANUAL For Model 20 First Edition August 1999 Oki Data Corporation...