Epson AcuLaser C9200N Service Manual page 59

EPSON AcuLaser C9200N
2ND TRANSFER ROLLER PRESSURE MECHANISM
The 2nd Transfer Roller has the Pressure/Retraction mechanism which presses
to and retracts from the Transfer Belt so the patterns made on the Transfer Belt
except by printing (such as detection pattern during Image Stabilization) will
not affect the 2nd Transfer Roller.
Pressure/retraction operation
1. Drive from the 2nd Image Transfer Pressure/Retraction Motor is transmitted
through a gear train to the drive gear.
2. The drive gear rotates to rotate the Cam half way. Releasing the Pressure
lever will press the 2nd Transfer Roller to the Transfer Belt.
3. At this time, the 2nd Image Transfer Pressure Position Sensor detects whether
the 2nd Transfer Roller is located at the pressure position.
4. The Cam will rotate half way when the Motor turns ON again. Moving the
Pressure lever down will move the 2nd Transfer Roller to the retraction
position and will stop.
OPERATING PRINCIPLES
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Operating Principle of Main Unit Mechanism
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2nd Image Transfer
Pressure/Retraction
Motor (M5)
2nd Image Transfer Pressure
Position Sensor (PC7)
Drive Roller
Pressure Lever
4038T2C167AA
When Pressed
Figure 2-38. Pressure/Retraction Operation overview
Operation Timing
Start Key ON
Main Motor (M1)
2nd Image Transfer Pressure/Retraction
Motor (M5)
2nd Image Transfer Pressure Position Sensor
(PC7)
Revision D
Pressure Lever
Cam
4038T2C022DA
2nd Transfer Roller
Cam
4038T2C168AA
When Retracted
Paper moves past 2nd Transfer Roller
4038T2C136AA
Confidential
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