105
Ricoh Co. Ltd.
http://www.ricoh.com/
B245-62 / PD-C4
Slide 105
Fusing Temperature Control 1
The machine checks the thermistor once per second.
The machine compares the current and previous readings,
and the target, and decides how long to keep the lamp on
during the next second.
The thermostats provide overheat protection.
Thermostats
Thermister
The fusing temperature is controlled using a thermistor.
The CPU checks the output from the fusing thermistor once every second. The CPU
decides how long the lamps must be switched on during the next second by comparing
the following temperatures.
The thermistor temperature and the target temperature.
The difference of the previous thermistor temperature and the current thermistor
temperature.
The fusing lamp is turned on/off to maintain a target fusing temperature of 175
°
C
during copying. (Default is 175
°
C. Can adjust with SP1105-5.)
