Xerox Phaser 6500 Service Manual

2-4 Xerox Internal Use Only Phaser 6500/WorkCentre 6505 Service Manual
Theory of Operation
Charging
Each Imaging Unit drum’s surface is charged with negative electricity by
discharging of the bias charge roller (BCR) while rotating at a constant speed. This
process is performed in parallel for Cyan, Magenta, Yellow, and Black.
The BCR is kept in contact with the drum and rotates with the drum. The BCR is a
conductive roller, which receives negative voltage from the High-Voltage Power
Supply (HVPS) and discharges a negative Direct Current (DC) voltage.
The drum surface is uniformly and negatively charged with DC bias voltage. The
drum surface is a photoreceptor (which is an insulator in a dark areas and a
conductor when exposed to light) and the drum inside is composed of conductor.
The cleaning roller is a sponge that contacts the BCR to catch the toner.
s6500-020
Cleaning Roller
BCR
Photoreceptor
Conductor
Drum
HVPS
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Xerox Phaser 6500 Specifications

General

Brand	Xerox
Model	Phaser 6500
Category	Printer
Language	English