2.3.5 Discharge mechanism
The residual charge of the OPC surface is removed from
the inside of the unit by the quenching lamp (fluorescent
lamp). Since the belt is illuminated from the inside, the
charge is removed regardless of the influence of the
toner setting on the OPC surface. The light of the lamp
is applied from the T/S corona unit to the cleaning roller,
thus enhancing the transfer efficiency and cleaning
efficiency.
The area exposed to light from the lamp is covered with
a transparent, yellow cover (filter) to protect the OPC
belt against harmful ultraviolet radiation that can cause
optical fatigue.
The discharge brush removes the charge on the OPC
belt (base) produced by friction during operation. This
prevents electric shocks to technicians when they
perform maintenance on the machine.
2.3.6 OPC belt damage prevention mechanism
Rubber rollers are used in the OPC unit. When
developer or cleaning carrier enters the rear of the OPC
belt, the developer or cleaning carrier transfers to the
roller surface. This prevents the carrier from damaging
the OPC.
All rollers other than the drive roller use low-friction
rubber to help slipping of the belt during tracking.
Discharge
brush
QL stabilizer
Lamp cover
Quenching lamp
LIght
output angle
OPC
Belt roller
Developer
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