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Process/Operation > Image Formation System > Controls > Transfer/Separation
Process/Operation > Image Formation System > Controls > Transfer/Separation
● Primary Transfer Roller Disengagement Control
The Primary Transfer Roller is usually engaged. The Primary Transfer Roller needs to be
disengaged when a part is replaced; otherwise, the ITB can contact with the Drum Unit.
The timing to make the Primary Transfer Roller disengaged
• At the time of shipment
• In the case of selecting the ITB/Drum Unit replacement in service mode or user mode
The timing to make the roller engaged
• At power-on
• At recovery from sleep mode
• When the Front Door is opened/closed
The roller is engaged after the roller is once disengaged.
Related service mode:
• Execution of the Primary Transfer Roller disengagement
COPIER > FUNCTION > MISC-P > T1-UP
Related user mode:
• Execution of ITB/Drum Unit Replacement Mode
Adjustment/Maintenance > Maintenance > ITB/Drum Unit Replacement Mode > Start
The above mode is displayed by selecting the following in service mode:
COPIER > OPTION > DSPLY-SW > ITB-DSP > 1 (default: 0)
● Primary Transfer Bias Control
The primary transfer bias is divided into each color (Y, M, C, Bk) to be generated on the
primary transfer bias generation circuit. The primary transfer bias (TR1-1, TR1-2, TR1-3, TR1-
4), which has been generated, is applied to the Primary Transfer Roller.
The primary transfer bias value is determined by the ATVC control with the DC Controller,
which makes constant current value running though the Primary Transfer Roller.
Apply
Constant Voltage
Apply
Constant Voltage
Apply
Constant Voltage
Apply
Constant Voltage
TR1-4
ITB
TR1-3
TR1-2
TR1-1
Detect
Current
Detect
Current
Detect
Current
Detect
Current
Y
M
C
Bk
Photosensitive Drum
Primary
Transfer Roller
NOTE:
The ATVC control secures transfer performance that can be affected by change in
resistance caused by the environment as well as deterioration of the Primary Transfer
Roller. The ATVC control is performed respectively for the primary transfer bias in each
color.
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