Spring Clutch; Development Bias - Ricoh G108 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 activates,
a lever (pawl) prevents the leftmost gear
from rotating. 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
once the development unit stops moving
towards the OPC belt unit, the torque
provided by the toner return gear
becomes too strong and the clutch slips
due to the torque.

6.5.5 DEVELOPMENT BIAS

[E]
[F]
The high voltage unit (HVU) provides development bias to the four development
units. The development unit K [A] and the development unit Y [B] are attached to
DBVKY terminal [E] on the HVU. The development unit M [C] and the development
unit C [D] are attached to DBVMC terminal [F] on the HVU.
SM
[A]
[B]
[C]
[D]
6-21
DEVELOPMENT UNIT
[A]
G108D907.WMF
G108D908.WMF
G108
[B]