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III. IMAGE FORMATION
SYSTEM
A. Outline
.
The
basic
structure
of the
image
'
formation system is as shown below.
.
.
.
.
Scanning lamp control system
Primary/transfer
corona
current
and
grid bias voltage control system
Controlling developing
bias
Document
density
measurement
system
Developing
assembly/Drum
cleaner
Blanking
I
R
A
I
R
R
I
I
I/
4
&__'o'
Scanning lamp
+--r-----
--&___._
p
/-
L
DC
controller
PCB
8
I
.1
When shorted,
signal sent to
indicate black
developing
assembly.
DC BIAS control command
(DCBC)
I)(HVT)
It------
1 (
'I
-I
747
Figure 3-20
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