Controlling The Separation Static Eliminator Bias; Outline - Canon iR2200 Service Manual

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)
24 VDC input from
main power supply
Static
J301
eliminator bias
-B3
enable signal
Serial communication
Print/standby mode signal
Static eliminator bias
mode signal
J301
-A3
-A1
4-14 P
COPYRIGHT © 2001 CANON INC.
Composite power supply PCB
+24V
J135
J136
Transformer
-B10
drive signal
Static
eliminator bias
output ON signal
Static eliminator bias
mode signal
J136
-A10
-A12
F04-401-01
High-voltage
main
transformer
Voltage
(T504)
detection
Voltage
Output
level
control
2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
Photosensitive
Static
drum
eliminator
J132
bias output
Separation
static eliminator