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MAINTENANCE GUIDE
3.3 Fuser Controller
3.3.1 Setting the Fuser Controller
The heater rod in the heater assembly is controlled according to the temperature set in the fuser controller.
When the ROS is warming up and the main motor stops running, the standby temperature is used as the fuser
controller temperature. When the main motor is running (during printing or during the ERASE cycle, but not while
it is warming up), the running temperature is used as the fuser controller temperature.
3.3.2 ON/OFF Controller for the Heater Rod
The ON/OFF control of the heater rod is executed according to the following rules:
• When the fuser controller temperature is less than –2°C (the fuser ON temperature), the heater rod is turned ON.
• When the fuser controller temperature is greater than 0°C (the fuser OFF temperature), the heater rod is turned OFF.
3.3.3 Fuser Warm up
The heater rod is turned ON (it lights up) at the same time that the fuser begins warming up. After the temperature
on the back of the heat roller (the temperature detected by the thermistor in the fuser assembly) reaches the fuser
controller temperature (standby temperature), the fuser will stop warming up.
The main motor operates while the fuser is warming up.
3.3.4 List of Fuser Temperatures
Maximum safe temperature
Fuser OFF temperature
Fuser controller temperature*1
Fuser ON temperature
Minimum safe temperature
*1: Changes according to the data in the non-volatile memory.
The temperatures described above are displayed when the value of non-volatile code 9 is set to 8.
Temperature
Approx. 175°C (standby temperature + approx. 35°C)
Fuser controller temperature ±0°C
Standby temperature: 140°C
Running temperature: 150°C (uniform)
Fuser controller temperature – approx. 2°C
Approx. 115°C (standby temperature – approx. 25°C)
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