Spring Clutch; Development Bias - Ricoh G157 Service Manual

Spring Clutch

Each spring clutch has a spring [A] on its
shaft. This spring tightly holds the shaft.
Strong torque is necessary to turn the gear
[B].
When the development solenoid goes on,
the lever holds the leftmost gear. At this
time, the spring clutch does this:
• Does not turn while the development unit
moves towards the OPC belt.
• Starts to turn when the development unit
contacts the OPC belt. This is because
the torque given by the toner return gear
becomes strong.

6.6.5 DEVELOPMENT BIAS

[E]
[F]
The high voltage unit (HVU) gives development bias to the four development units.
The development unit K [A] and the development unit Y [B] are attached to DBVKY
[E] on the HVU. The development unit M [C] and the development unit C [D] are
attached to DBVMC [F] on the HVU.
SM
[A]
[B]
[C]
[D]
6-25
DEVELOPMENT UNIT
[A]
G157D931.WMFF
G157D932.WMFF
[B]
G157