Xerox Phaser 4620 Service Manual page 384

Transfer Roller
The Transfer Roller, located beneath the Drum Cartridge, is driven by direct contact with the
OPC drum. When media moves between the Transfer Roller and drum, the Transfer Roller
applies a positive charge to the rear surface of the media. The negatively charged, developed
image on the drum is attracted by the media's positive charge and is transferred from the drum
to the media.
Figure 3 Transfer Roller
Principles of Operation
Xerographics
Toner Cartridge
The main Drive Assembly drives the Toner Cartridge to deliver toner to the Drum Cartridge.
Waste Toner Cartridge
Excess toner is collected through a series of augers and deposited into the Waste Toner Car-
tridge. A new cartridge is supplied with each replacement Toner Cartridge. Replace the Waste
Toner Cartridge when you install a new Toner Cartridge.
5/2011
8-8
Figure 4 Toner Cartridge
Revision - Xerox Internal Use Only
Phaser 4600/4620 Printer Service Manual