Oki OKIOFFICE84 Maintenance Manual page 323

(3) Charging
Charging is performed by applying DC voltage to the charge roller that is in contact with the
surface of the OPC drum.
voltage
power
supply
(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.
Charge roller
High-
voltage
power
supply
OPC drum
High-
OPC drum
LED head
B - 9
DESCRIPTION OF
PRINT OPERATIONS
Charge roller
Paper
40672201TH Rev. 4
LED head
OPC drum