Epson Aculaser C9200N, Service Manual

Page: 58 / 441

EPSON AcuLaser C9200N Revision D
OPERATING PRINCIPLES Operating Principle of Main Unit Mechanism 58
Confidential
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Operation timing
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Pressure position changing mechanism
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To extend the service life of the PC Drum/Y, M, C, the pressure
position of the 1st Image Transfer Roller is changed between the
monochrome mode and the color mode. In the monochrome mode, the
1st Image Transfer Roller/Y, M, C is left in the retracted position and
the PC Drum/Y, M, C is stopped.
„
Color mode:
• The pressure position of the Image Transfer Roller is where the PC Drum is in
contact with the Transfer Belt for all four colors of toner.
• In order to transfer the original without missing any part, a Retraction Roller
is mounted at the 1st Image Transfer Roller/Y so the 1st Image Transfer
Roller/Y will properly contact to the PC Drum/Y.
„
Monochrome mode:
The pressure position of the Image Transfer Roller/Y, M, C is where
the PC Drum/Y, M, C leaves the Transfer Belt. While that of the Image
Transfer Roller/K is where the PC Drum/K is in contact with the
Transfer Belt. This allows the PC Drum/Y, M, C to remain stationary
in this mode.
Figure 2-36. Monochrome Mode
Figure 2-37. Color Mode
4038T2C136AA
Fusing Drive Motor (M4)
1st Image Transfer Pressure/Retraction
Clutch (CL3)
1st Image Transfer Retraction Position
Sensor (PC6)
Paper Moves Past 2nd Transfer Roller Start Key ON
4038T2C162AA
1st Image Transfer Roller
Transfer Belt
PC Drum
4038T2C163AA
Retraction Roller