Primary Transfer Bias Control; Secondary Transfer Bias Control - Canon imageRUNNER ADVANCE C5045 Series Service Manual

2

Primary transfer bias control

This control transfers toner on the photosensitive drum to the ITB.
The primary transfer bias (DC), which has been generated by HVT2 (UN17), is applied to the
primary transfer roller.
Bias value is determined by the measurement value of environment sensor 1 (UN22)
DC controller(UN1)
HVT2 (UN17)
DC DC
Primary transfer Primary transfer
roller(Y) roller(M)
2
DC DC
Primary transfer
Primary transfer
roller(Bk)
roller(C)
F-2-89 F-2-89

Secondary transfer bias control

This control transfers toner on the ITB to the paper.
The secondary transfer bias (DC), which has been generated by HVY3 (UN18), is applied to
the secondary transfer outer roller.
Bias value is determined by the measurement value of environment sensor 2 (UN50) and the
paper type.
Drive roller
(steering roller)
2-55
DC controller(UN1)
HVT3 (UN18)
DC
Secondary transfer outer roller
F-2-90 F-2-90
2-55