Transfer Belt Unit Lift Mechanism - Ricoh A156 Service Manual

7.4 TRANSFER BELT UNIT LIFT MECHANISM

[A]
[B]
[C]
[E]
The transfer belt contact clutch [A] (a one-third turn clutch) located on the
back of the copier turns on and the cam [B] rotates one third of a complete
rotation. The on-off lever [C], riding on the cam, rotates counterclockwise to
release the transfer lift lever [D]. Then, the springs [E] push up the transfer
belt lift lever and the transfer belt to make the transfer belt contact the OPC
drum.
The transfer belt contact home position sensor [F] is used to detect the home
position of the cam (this is when the transfer belt is away from the OPC
drum). The transfer belt must be released from the OPC drum while it is not
being used for image transfer. The reasons are as follows:
•
To prevent V , V
SP
rubbed off by the transfer belt, because the transfer belt is located
between the development unit and the ID sensor.
•
To prevent a change in the OPC drum characteristics because of the
influence of additives inside the rubber belt.
STM
[F]
, and V patterns on the OPC drum from being
L R
2-65
The transfer
belt is away
from the OPC
drum.
The transfer
belt is in
contact with
the OPC
drum.
[D]
A156/A160/A162