Lexmark MS317 - Page 322

Step 1: Charge
During the charge step, voltage is sent from the HVPS to the charge roll beside the photoconductor. The charge
roll applies a uniform negative charge over the entire surface of the photoconductor to prepare it for the laser
beam.
HVPS
(-VDC)
(-VDC)
Ground
Conductive Tube
Photoconductive
Surface
0V
-VDC value
DRUM
Drum Surface
Voltage
Drum Surface
Image
Ground
Charge roll
4514-330
Theory of operation
322