Epson AcuLaser C9200N Service Manual page 57

EPSON AcuLaser C9200N
2.2.9.3 Operation
TRANSFER BELT DRIVE MECHANISM
The Transfer Belt is driven by the Main Motor (M1).
Revolving speed of the Main Motor (M1) can be switched by the motor
clock.
1ST IMAGE TRANSFER ROLLER MECHANISM
Pressure/Retraction mechanism is equipped for pressing the 1st Image
Transfer Rollers (Y, M, C) to inside the Transfer Belt at the 1st image
transfer.
The 1st Image Transfer Roller (K) does not have Pressure/Retraction
mechanism. The 1st Image Transfer Roller (K) always presses the Transfer
Belt to the PC Drum (K).
Driving force is transferred from the Fusing Motor (M4) to the Pressure/
Retraction mechanism through the 1st Image Transfer Pressure/Retraction
Clutch (CL3).
The 1st Image Transfer Retraction Position Sensor (PC6) detects the 1st
Image Transfer Roller at its retracted position.
Pressure/retraction operation
Pressure operation
1. Rotation of the Fusing Drive Motor (M4) is transferred to the 1st Image
Transfer Pressure/Retraction Clutch (CL3).
2. When the 1st Image Transfer Pressure/Retraction Clutch (CL3) is turned ON,
the rotation of the Fusing Drive Motor (M4) is transferred to the drive gear.
3. Rotation of the drive gear turns the pressure cam, which allows the Sliding
Plate to move.
4. The 1st Image Transfer Roller (Y, M, and C) will move down to be pressed to
the Transfer Belt when the sliding plate moves.
5. The slide plate moves the Actuator for the 1st Image Transfer Retraction
Position Sensor up.
6. The Actuator blocks the 1st Image Transfer Retraction Position Sensor (PC6)
to detect the slide plate's movement.
OPERATING PRINCIPLES
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Operating Principle of Main Unit Mechanism
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7. Turn the 1st Image Transfer Pressure/Retraction Clutch (CL3) OFF.
8. The Cam will stop rotating and the siding plate will stop.
9. The 1st Image Transfer Roller (Y, M, and C) will stay being pressed.
Retraction operation
1. The rotation of the Fusing Drive Motor (M4) will be transferred to the 1st
Image Transfer Pressure/Retraction Clutch (CL3).
2. When the 1st Image Transfer Pressure/Retraction Clutch (CL3) is turned ON,
rotation of the Fusing Drive Motor (M4) will be transferred to the drive gear.
3. The Cam will rotate to move the sliding plate as the drive gear rotates.
4. The 1st Image Transfer Roller (Y, M, and C) will move up to retract from the
Transfer Belt as the sliding plate moves.
5. The slide plate moves the Actuator for the 1st Image Transfer Retraction
Position Sensor down.
6. The Actuator unblocks the 1st Image Transfer Retraction Position Sensor
(PC6) to detect the slide's movement.
7. Turn the 1st Image Transfer Pressure/Retraction Clutch (CL3) OFF.
8. The Cam will stop rotating to stop the sliding plate.
9. The 1st Image Transfer Roller (Y, M, and C) will keep their retraction
position.
Main Motor (M4)
Fusing Drive
Motor (M4)
1st Image Transfer Pressure/
Retraction Clutch (CL3)
Figure 2-35. Pressure/Retraction mechanism
Revision D
4038T2C021DB
57
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