Fusing Control - Ricoh M5 Service Manual

3. Fusing Control

TH Temp
115° C
Ready
Room Temp.
After
the TH senses 160 degrees Celsius, the enable signal changes to a switching signal. The fus-
ing lamp switches on 125 ms and then off 500 ms.
prevents excessive over shoot.
turns off the switching signal when the TH senses 185 degrees Celsius.
This decreases the rate of heat application and
(Maximum overshoot is about 195 degrees Celsius.) The CPU
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May, 25, 1985