Ricoh M281 Series Service Manual page 584

Fusing Unit
7.7 FUSING UNIT
The paper sent from the transfer unit is fed between the hot roller and the pressure roller.
The hot roller is heated by the fusing lamps, and the toner is fused by heat and pressure and fixed
onto the paper. The pressure roller is pressed by the fusing pressure spring. The surface
temperature of the hot roller is detected by the fusing thermistor and controlled by the controller
board. If the fusing unit reaches extremely high temperature, the power line will be shut off and the
fusing lamp is forced to turn off.
No.
1 Hot roller
2 Fusing lamps
3 Fusing thermostat
4 Fusing thermistor
5 Separators
6 Pressure roller
D255/D256/M281/M282
Name No.
7 Actuator (fusing sensor)
8 Fusing exit roller
9 Fusing exit pulley
10 Fusing thermistor
11 Fusing entrance guide
7-20
Name
SM