Contact Mechanism - Ricoh U-C1 B051 Service Manual

PHOTOCONDUCTOR UNIT (PCU)

Contact Mechanism

[A]
[B]
B051D322.WMF
[A]: Image transfer belt cleaning contact solenoid
[B]: Half-turn clutch
[C]: Lever
[D]: Cam
[E]: Fusing unit motor
The fusing unit motor [E] drives the image transfer belt cleaning unit and the
contact mechanism.
When the toner images are being transferred from the OPC belt to the image
transfer belt, the image transfer belt cleaning unit must be kept away from the belt.
The unit contacts the belt only while cleaning the belt.
NOTE: During standby mode, the cleaning unit is away from the image transfer
belt.
When the image transfer belt cleaning contact solenoid [A] is off, it catches a hook
on the surface of the half-turn clutch [B]. As a result, the high point of the cam
pushes the lever [C], and the cleaning unit is away from the transfer belt.
When the solenoid activates, the hook is released, drive from the motor is
transferred from the gear to the clutch, the cam [D] makes half a turn, the lever
drops, and the cleaning unit contacts the transfer belt
[C]
[D]
REAR VIEW
6-40
26 July 2002
[E]
B051d320.WMF