Exposure - OKIDATA OL600e Service Manual

Exposure

Power
supply
The image roller surface is charged to about –750 V by the contact charge of the charge roller.
Operation Description
Light emitted by the LED head irradiates the image drum surface with a
negative charge. The surface potential of the irradiated portion drops,
forming an electrostatic latent image associated with the image signal.
Charge roller
Image drum
The image drum is coated with an underlayer (UL), a carrier generation layer (CGL),
and carrier transfer layer (CTL) on aluminum base. The organic photo-conductor
layer (OPC), comprising CTL and CGL, is about 20 µm thick.
LED head
30 mm
2 - 20
Service Manual, P/N 59271602
LED head
Paper
Image drum
Image drum
CTL
CGL
UL
Base
20 µm
OL600e/610e/610e-PS/610e-S