Fusing - Brother HL-3040CN Service Manual

3.5.5

Fusing

The toner transferred on to the paper passes between the heat roller and the pressure roller in
the fuser unit and are fused by heat and pressure. The main CPU detects surface
temperature of the heat roller using the thermistor and turns ON/OFF the halogen heater lamp
to keep the temperature constant.
Thermistor
Halogen heater lamp
Memo:
Control of fusing temperature
The fuser unit adjusts such temperature according to types and sizes of paper so as to
keep excellent image quality.
Thermistor
Fig. 2-23
2-22
Heat roller
Pressure roller
Fuser unit
Confidential