Canon IMAGERUNNER 2530, Service Manual

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Technology > Image Formation System > Controls > Transfer Unit
Technology > Image Formation System > Controls > Transfer Unit
Transfer Unit
The transfer unit mainly consists of the static eliminator and transfer roller which rotates in
connection with the drum unit.
Transfer charging roller
Static eliminator
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Transfer Bias/Separation Static Eliminator Bias Control
DC bias is applied to the transfer roller and static eliminator.
[3]
Environment sensor
Photosensitive drum
Static eliminator
Transfer charging roller
[1]
HVT PCB
[2]
Transfer bias
control circuit
DC Controller PCB
Static eliminator bias
control circuit
[1] Separation static eliminator bias control signal
[2] Transfer bias control signal
[3] Environment sensor detection signal
Transfer Bias Constant Current Control
The transfer bias control circuit on the DC controller PCB controls the transfer bias applied to
the transfer roller to keep the constant current.
Transfer bias level control
The transfer bias output varies according to the environment, paper type, paper width, and/or
source of paper detected by the environment sensor (HU1).
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