Transfer/Separation - Canon imageRUNNER ADVANCE C3325 Series Service Manual

2
Technical Explanation > Image Formation System > Controls > Transfer/Separation
Developing bias control
Purpose: To apply voltage to the Developing Cylinder in order to generate a potential
difference from the Photosensitive Drum
Control description
The developing bias (AC, DC negative), which has been generated on the Secondary
Charging PCB (UN03), is applied to the Developing Cylinder.
• Developing DC bias: The bias to generate potential difference with the Photosensitive
Drum. The bias value is determined based on the Environment Sensor (UN27).
• Developing AC bias: The bias to improve image quality.
UN04
DC Controller PCB
UN03 Secondary Transfer High-voltage PCB
[1]
Parts name
[1] Developing Cylinder
T-2-22
2 Technical Explanation > Image Formation System > Controls > Transfer/Separation

■ Transfer/Separation

● Parts / Drive Configuration
M02
Parts name
[1] Primary Transfer Roller
[2] ITB Cleaning Screw
[3] ITB (Intermediate Transfer Belt) Toner on the Photosensitive Drum is transferred to a
[4] Secondary Transfer Inner Roller The ITB is driven.
[5] Secondary Transfer Outer Roller As well as attracting toner on the ITB to the paper, paper
M02 Bk Drum _ ITB Motor
F-2-51
Related Error Code:
E010-0001/0002/0003 : Bk Drum_ITB Motor error
[4]
[3]
[2]
Role
Toner on the Photosensitive Drum is attracted to the ITB.
Residual toner inside the ITB Cleaner Unit is fed.
paper.
is fed.
The Secondary Transfer Roller/ITB Cleaning Screw/Bk
Drum Unit is driven.
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[5]
[1]
F-2-52
T-2-23
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