Fusing (Fuser) - Xerox Phaser 7500 Service Manual

Fusing (Fuser)

Phaser 7500 Printer Service Manual
The Fuser Assembly fuses the complete toner image that was transferred onto the
paper, using heat and pressure.
Fuser Assembly (PL7.1.1)
Main Heater Lamp
The Fuser Assembly consists of the following main components.
• Heat Roll - A tube-covered hollow metal roll, which applies heat to the paper
to fuse toner on it.
• Pressure Belt - A belt that contains a pressure system within it. This works in
configuration with the Heat Roll to apply pressure to the paper to fuse toner
on it.
Main Heater Lamp - The Main Heater Lamps are located within the Heat Roll
•
which are sealed by the heating coils that heat up the left and right ends of
the Heat Roll.
• Sub Heater Lamp - The Sub Heater Lamps are located within the Heat Roll
which are sealed by the heating coils that heat up the center part of the Heat
Roll.
Fuser Exit Sensor
Heat Roller
Pressure Belt
Thermostat
Sub Heater Lamp
Theory of Operation
Rear Temperature Sensor
(Contact Type)
Fuser Assembly
Center Temperature Sensor
(Non-contact Type)
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