Pump Mechanism - Ricoh B230 Training Program

Toner Supply
Clutch
Shutter
(Pump)
The four pumps are the same.
Springs close the two shutters when the PCU is pulled out of the machine.

Pump Mechanism

Tube (From the
Toner Bottle)
The pump "pulls"
toner in from the
toner bottle and
drops it into the
development unit.
The shutter on the
pump opens when a
PCU is installed in
Rotor
the machine.
•
At the same time, the
pump pushes open
Shutter
the shutter on the
(Development
development unit.
Unit)
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128