3. Turning On and Off the AC Component of the Developing Bias
The DC component of the developing bias is turned on and off by the developing AC
bias ON command (ACON*) generated by the DC controller.
• When the AC component of the developing bas is on,
ACON*=0
→
The remote circuit turns on.
→
The AC drive circuit turns on.
→
The AC high-voltage transformer turns on. (developing AC bias
output)
When the AC high-voltage transformer is on, a voltage of 1300 Vp-p is applied.
• When the AC component of the developing bias is off,
ACON*=1
→
The remote circuit turns off.
→
The AC drive circuit turns off.
→
The AC high-voltage transformer turns off.
4. Sequence of Operations (developing bias)
Figure 4-110
Reference:
The copier allows changing of the copy density manually during continuous copying
operation.
The copy density is determined as soon as the scanning lamp turns on, and the
new density will be effective for the next copy.
CHAPTER 4 IMAGE FORMATION SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
4-13
Main motor (M1)
DC back bias
Developing bias DC
component
WMUP
SCFW
SCRV
SCFW
SCRV
LSTR
STBY
INTR
WMUPR
STBY
ON
ON
Power switch
COPY START key
Developing bias AC
component
Содержание NP6330
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