CHAPTER 5 IMAGE FORMATION SYSTEM
COPYRIGHT© 2002 CANON INC.
2000
CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
5 - 8
4 Controlling the Transfer Charging Roller Bias
4.1 Outline
The machine uses a charging roller for charging (direct charging method), and it applies
a DC bias to the transfer charging roller.
The machine’s transfer charging mechanism is controlled for the following:
[1] turning on and off the bias.
[2] controlling the DC bias to a specific voltage/current level.
[3] correcting the voltage level (ATVC control)
The following shows the system used to control the transfer charging mechanism:
F05-401-01
T403
Tr
TRCRNT
TRPWM*
ASIC
CPU
TRPFOT*
TRCHG
TRNFOT*
DC controller PCB
Transfer bias circuit
Comparison
circuit
Constant current/
voltage switch circuit
Positive current
detection circuit
Voltage
detection circuit
Negative voltage
generation circuit
To transfer
charging roller
Superimposition
Summary of Contents for iR1600 Series
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Page 665: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 1 INTRODUCTION...
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Page 671: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 2 BASIC OPERATION...
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Page 679: ...COPYRIGHT 2002 CANON INC CANON FAX BOARD REV 0 MAR 2002 CHAPTER 3 TROUBLESHOOTING...
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