CHAPTER 4 IMAGE FORMATION SYSTEM

4 Controlling the Separation Static Eliminator Bias

4.1 Outline

Part 2>Chapter 5>8.3 “Static Eliminator Separation Method”

The machine uses a static eliminator for separation. A DC bias is applied to the static eliminator; the following are items of control:

[1]Turning on/off the bias

[2]Controlling the bias to a specific voltage level

[3]Controlling the output to suit paper type and reading by the environment sensor (humid- ity)

Composite power supply PCB

 

24 VDC input from

 

+24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

main power supply J135

 

 

 

 

 

 

 

 

 

J301

Static

J136

 

 

High-voltage

 

 

Photosensitive

PCB

eliminator bias

 

Transformer

 

Static

drum

-B3

enable signal

-B10

 

 

 

main

 

eliminator

J132

 

 

 

 

drive signal

 

transformer

Voltage

bias output

 

 

 

 

 

 

 

(T504)

detection

 

 

DC controller

 

 

 

 

Static

 

 

 

 

 

 

 

PW-CPU

 

 

 

Voltage

 

Separation

 

 

 

eliminator bias

 

 

 

 

 

 

 

Output

 

static eliminator

 

Serial communication

output ON signal

level

 

 

control

 

 

 

 

 

 

 

 

 

 

 

Print/standby mode signal

 

 

 

 

 

 

 

 

Static eliminator bias

Static eliminator bias

 

 

 

 

mode signal

 

 

 

 

 

 

 

 

mode signal

 

 

 

 

 

 

 

J301

 

J136

 

 

 

 

 

 

 

 

 

-A3

 

-A10

 

 

 

 

 

 

 

 

 

-A1

 

-A12

 

 

 

 

 

 

 

 

 

 

 

 

 

F04-401-01

 

 

 

4-14 P

COPYRIGHT © 2001 CANON INC.

CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

Page 178
Image 178
Canon IR2800 Controlling the Separation Static Eliminator Bias, Part 2Chapter 58.3 Static Eliminator Separation Method