The paper from the transfer and separation section is pinched between the heat roller and the press roller. The heat roller is heated by the fusing heater, and the paper is pressed by the press roller with the pressure added by the pressure spring toward the heat roller, so toner is fused on the paper by that heat and pressure.
The surface temperature of the heat roller is detected by the fusing thermistor and controlled by the main/engine PCB (PCB1). If the fusing unit has abnormal temperature, the power supply line is shut off by switching the fusing thermostat and the fusing heater is turned off forcedly.
| No. | Name | No. | Name |
|---|---|---|---|
| 1 | Heat roller | 8 | Separation plate |
| 2 | Fusing heater 1 | 9 | Press roller |
| 3 | Fusing heater 2 | 10 | Actuator (Exit sensor) |
| 4 | Fusing thermostat 1 | 11 | Fusing exit roller |
| 5 | Fusing thermostat 2 | 12 | Fusing exit pulley |
| 6 | Fusing thermistor 1 | 13 | Fusing front guide |
| 7 | Fusing thermistor 2 |