24-1.Fusing Temperature Control; Fusing Temperature Control - Minolta EP3010 Manual

1173SBM2401A

24-1. Fusing Temperature Control

The Upper Fusing Roller is heated by a Fusing Heater Lamp which is an AC halogen lamp.
Fusing Thermistor 1 and 2 installed on the Upper Fusing Roller help keep the optimum fus-
ing temperature.
The fusing temperature is normally controlled at 195°C. To ensure good fusing perfor-
mance, however, even when the Lower Fusing Roller remains cool immediately after warm-
up in the early morning, the temperature is controlled as follows when the copier is turned
ON:
Temperature is controlled at 210°C for 10 min. after the copier has completed warming up,
which is followed by a temperature control at 195°C. If, however, a copy cycle is started
while temperature is being controlled at 210°C, the temperature control at 195°C is started
1 min. after the completion of the warm-up cycle. If this 1-min. period has already elapsed
when the copy cycle is started, the copier immediately starts the temperature control at
195°C.
Fusing Thermistor 1 is positioned at a point 84 mm from the paper path reference position,
thereby preventing offset caused by low temperature and degraded fusing performance for
small-size paper.
The control temperature in the Energy Saving Mode is 135°C.
Fusing Thermoswitch, installed above the Upper Fusing Roller, cuts off the power to the
Fusing Unit if the temperature of the Upper Fusing Roller becomes excessively high. It
eliminates the possibility of a fire that could occur when the Fusing Heater Lamp remains
ON due to a faulty temperature control circuit.
1173M002CB
M-78