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Phaser 6500/Workcentre 6505 Operational Overview; Print Process - Xerox Phaser 6500 Service Manual

Color laser printer/multi-function printer
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Theory of Operation

Phaser 6500/WorkCentre 6505 Operational Overview

Print Process

The Phaser 6500 is a full-color printer and the WorkCentre 6505 is a full-color
multifunction printer, both using raster output scanner (ROS) lasers with an
electrophotographic four-color CMYK process. The tandem system consists of four
color drums (C, M, Y, and K) which creates the toner image.
The WorkCentre 6505 MFP is equipped with a color scanner and with FAX control
circuitry. The CCD array in the scanhead creates digital signals that represent
documents placed on its platen or fed through its automatic document feeder.
These signals are sent to the printer to make copies, to the USB or Ethernet ports
for storage as data, or to the FAX control for transmission over telephone lines.
The following block diagram provides the sequence of events for the xerographic
process (dashed lines) and the paper flow (solid lines) into and out of the printer.
The print process consists of the following steps:
1. Charging – The drum surfaces are charged with electricity.
2. Exposure – The drums are exposed to laser beams.
3. Development – Image is developed with toner.
4. Image Transfer – Four color finished toner image on the drums is transferred
onto the paper.
5. Cleaning – Excess toner is removed from the drum and BCR.
6. Fusing – The Fuser applies toner on to paper using heat and pressure.
7. Cleaning – Remaining toner is removed from the belt.
Imaging Unit
(1) Charge
(2) Exposure
(3) Development
(5) Cleaning
The following diagram shows the location of components involved in the print
process for both the SFP and MFP.
Xerox Internal Use Only
Transfer Belt
(4) Transfer (Drum to Paper)
(7) Cleaning
Phaser 6500/WorkCentre 6505 Service Manual
(6) Fusing


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Workcentre 6505