Fixing means the process to fix the toner on the paper permanently. The fixing part melts the
toner at the high temperature using the halogen heater. The toner is fixed on the paper by the
heat and pressure through the fixing part with the image. The surface of the heat roller is
rosined by Teflon and lubricated to prevent from attaching the toners. The press roller is made
of silicon, and its spring compresses the melted toner.
Fixing Part
The fixing part becomes high temperature, so the thermistor and the thermal fuse are provided.
1. Thermistor
The thermistor touches the heat roller and check the temperature
to feed back to the control circuit. The surface temperature should
be kept 178 °C while printing.
2. The thermal fuse
The thermal fuse plays the role to prevent the heat roller from
rising to abnormal high temperature. The thermal fuse is located
near the heat roller and turns OFF the power when the
temperature around the thermal fuse becomes over 121°C. Once
the thermal fuse is turned OFF, it will not be turned ON again.
3. Thermostat
The thermostat takes the same role with the thermal fuse. The
thermostat is located near the heat roller, and it turns OFF the
power when the temperature around the thermostat becomes over
135°C.
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