Oki C9200 Service Manual page 18

(2) Charging
Negative DC voltage is applied to the charging roller contacting the surface of the OPC drum.
(3) Exposure
The negatively charged surface of the OPC drum is radiated with light from the LED head.
The negative charge of the radiated portions of the drum surface attenuates in response to
the intensity of the light and a latent electrostatic image responsive to the potentials of the
surface is formed on the drum surface.
Power
Unit
41388601TH Rev.2
Power
Unit
OPC drum
LED head
Charging roller
OPC drum
Charging roller
Paper
LED head
OPC drum
18 /