Xerox Phaser 4500 Service Manual page 39

Phaser 4500/4510 Service Manual
10. Two-sided printing reverses the direction of the exit rollers to route the
paper through the duplex unit rollers and back to the registration roller. A
sensor in the duplex unit detects the presence of paper.
Block Diagram of the Print Cycle
The block diagram of the print cycle shows the sequence of events for the
xerographic process (dashed lines) and the paper flow (solid lines) into and
out of the printer.
1 2
Charge
Exposure
Components Associated with the Xerographic Process
This cut-away side view of the printer shows the location of individual
components within the printer, and the major components that are directly
related to the print cycle and to the paper path.
Pressure
Roller
7. Fusing
Detack Saw
Paper
Transport
Print Cartridge
4
Paper
Transport
Paper Enters
5
3
Transfer
Development
Xerographic Cycle
Cycle Repeats for the Next Print
Heat Roller
Cleaning
Blade
6. Discharge
Drum
Transfer Roller
5. Transfer
Paper
Theory of Operation
10
Two-sided
Printing
6 7
Discharge Fusing
8
Cleaning
Fuser Assembly
8. Cleaning
1. Charging
BCR
2. Exposure
Charge Metering Blade
3. Development
Magnetic Roller
9
Paper Exit
s4500-007
Laser Beam
s4500-008
2-3