D. Controlling the Primary/Transfer Corona Current and the Grid
Bias
1. Outline
Figure 4-104 shows the circuit used to control the primary/transfer corona current
and the grid bias of the primary charging assembly, and the circuit has the following
functions:
q
Turning on and off the primary/transfer corona current.
w
Keeping the primary/transfer corona current to a specific level.
e
Turning on and off the grid bias.
Figure 4-104
CHAPTER 4 IMAGE FORMATION SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
4-5
PTON*
J114
-8B
J401
-6
-13B
-1
DC
controller
PCB
Remote
circuit
GRCONT
Comparator
circuit
AC drive circuit
Drive circuit
Voltage control
circuit
Current cortrol
circuit
High-voltage transfer (HVT)
Primary
high-voltage
transformer
Transfer high-voltage
transformer
Si
Pr
Gr
Tr
Содержание NP6330
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