Separation Static Eliminating Bias Pcb - Canon CP660 Service Manual

D.

Separation Static Eliminating Bias PCB

This circuit is controlled by two signals (Figure 4-611) from the DC controller PCB,
and generates the separation static eliminating DC bias and the separation static elimi-
nating AC bias for application to the separation static eliminating assembly.
The voltage applied to the separation static eliminating assembly is turned on and off
by the separation static eliminating DC bias drive signal and the separation static elimi-
nating AC bias drive signal. The level of the biases (both AC and DC) is kept to a specif-
ic level.
The DC controller PCB generates the separation static eliminating AC bias drive sig-
nal to suit the type of paper and the conditions of the environment.
Separation static eliminating DC bias drive signal
COPYRIGHT © 1999 CANON INC.
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Intermediate
transfer drum
Separation
static
eliminating
assembly
AC
+
DC (positive)
Separation static
eliminating bias
generation circuit
Separation static eliminating high-voltage PCB
DC controller PCB
Figure 4-611
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
Secondary
transfer belt
Separation static eliminating AC bias drive
4-33