40930701TH DRAFT Vesion 33 /
(3) Charging
Charging is effected by applying a DC minus voltage to the charge roller that is in contact with
the image drum surface.
(4) Exposure
Light emitted from the LED head irradiates the image drum surface with negative charges.
The surface potential of the irradiated part of the image drum drops, thereby forming an
electrostatic latent image associated with the image signal.
Paper Image drum
LED head
Image drum
Charge roller LED head
Power
supply
Image drum
Charge roller
Power
supply