Oki B 4100 Maintenance Manual page 513

(3) Charging
Charging is performed by applying DC voltage to the charge roller that is in contact with the surface of
the OPC drum.
(4) Exposure
Light emitted from the LED head irradiates the negatively charged surface of the OPC drum. The surface
potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the
image signal.
High-
voltage
power
supply
40055101TH Rev.4
High-
voltage
power
supply
OPC drum
LED head
Charge roller
OPC drum
Charge roller
Paper
LED head
OPC drum
513 /