14. Transfer corona section
Theory of Operation Ver. 1.0 Sep. 2008
60
bizhub C200
Composition/Operation
14.3 Operation
14.3.1
Transfer belt drive mechanism
• The transfer belt is driven by the transport motor.
14.3.2
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 tansfer.
• 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 from the fusing motor is transmitted to the pressure/retraction mechanism
through the transfer belt pressure retraction clutch.
• The transfer belt retraction sensor is installed to detect retracting position of the 1st
image transfer roller.
A. Pressure/retraction operation
• Pressure operation
1.
Rotation of the fusing motor is transmitted to the transfer belt pressure retraction
clutch.
2.
When the transfer belt pressure retraction clutch is turned ON, the rotation of the
fusing motor is transmitted 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 raises the actuator of the transfer belt retraction sensor.
6.
The actuator blocks the transfer belt retraction sensor and the slide plate move-
ment is detected.
7.
The transfer belt pressure retraction clutch is turned 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 motor is transmitted to the transfer belt pressure retrac-
tion clutch.
2.
When the transfer belt pressure retraction clutch is turned ON, rotation of the fusing
motor is transmitted 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 lowers the actuator of the transfer belt retraction sensor.
6.
The actuator unblocks the transfer belt retraction sensor and the slide plate move-
ment is detected.
7.
The transfer belt pressure retraction clutch is turned 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.
Theory of Operation Y109670-2