CHAPTER 5 IMAGE FORMATION SYSTEM
COPYRIGHT© 2002 CANON INC.
2000
CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
5 - 6
3 Controlling the Developing Bias
3.1 Outline
A DC bias and an AC bias are applied to the developing cylinder, and the developing
bias control system has the following functions:
[1] turning on and off the bias.
[2] controlling the developing DC bias to a constant voltage level.
[3] controlling the developing AC bias to a constant voltage level.
[4] controlling the voltage level of the developing bias.
The system used to control the developing bias control mechanism is constructed as fol-
lows:
F05-301-01
TB403/TB404
Dv
DVACFOT*
DCPWM*
DVDCFOT*
DC controller PCB
ASIC
CPU
DVDCUP*
DVACON*
To primary bias circuit
Developing bias circuit
Comparison
circuit
Comparison
circuit
Developing DC bias
voltage detection circuit
DC generation circuit
AC generation circuit
Developing AC bias
voltage detection circuit
Superimposition
To developing
cylinder
Содержание iR2000 Series
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