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