Specifications

Chapter 2: PrinterTechnical Description
2-9
Fusing and Paper Exit
1 Fuser Assembly Uses heat and pressure to permanently fix the toner image on a sheet of
paper. The Fuser Assembly is made up of six major components:
Heat Rod (1a): An electric coil that is sealed in a glass tube. The Heat
Rod is located inside the Heat Roll and provides the heat necessary to
melt the toner image on a sheet of paper.
Heat Roll (1b): Transfers heat to a sheet of paper.
Pressure Roll (1c): Presses the sheet of paper between itself and the
Heat Roll.
Temperature Sensor Assembly (1d): Monitors the Heat Roll surface
temperature. A thermistor rides the Heat Roll surface and controls power
to the Heat Rod. The Temperature Sensor Assembly functions as first–
stage, fuser overheating prevention.
Thermostat (1e): Connected in series with the Heater Rod power
supply, the Thermostat functions as the second-stage, fuser overheating
prevention. If the first stage fails to prevent a fuser overheat, the
Thermostat opens the circuit between the Heat Rod and the power
supply.
Fuse (1f): Connected in series with the Heater Rod power supply, the
Fuse functions as the third–stage, fuser overheating prevention. If both
first and second stages fail to prevent a fuser overheat, the fuse opens
the circuit between the Heat Rod and the power supply.
2 Exit Sensor Monitors when a sheet of paper passes the paper outlet.The sensor is
ON when paper passes the outlet.