THERMISTORS, THERMOSTATS August 2006
6-138
6.15.3 FUSING TEMPERATURE CONTROL
Basic Temperature Control
The fusing unit has four fusing lamps: one in the hot roller (350W), two in the
heating roller (590W x2), and one in the pressure roller (350W).
• The heating roller is the main source of heat to the fusing belt for fusing.
• The hot roller provides additional heat for fusing.
• The pressure roller maintains the temperature of the fusing belt while the
machine is in standby mode.
The feedback from these thermistors controls the fusing temperature.
Heating roller: A temperature sensor located at the center and a thermistor at
the front end of the heating roller.
Hot roller: A thermistor located at the front end of the hot roller.
Pressure roller: A thermistor located at the center of the pressure roller.
