Drum Temperature Detection Circuit - Toshiba e-STUDIO453 Service Manual

11.4 Drum Temperature Detection Circuit

(1) Purpose of the drum temperature detection circuit
The amount of charge on the drum surface varies greatly with the surface temperature of the
drum. This circuit detects the temperature of the drum surface, and the amount of charge on the
drum surface is controlled to be constant based on the result.
(2) Configuration of the drum temperature detection circuit
Drum
thermstor
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+5V
DRTH
GND GND
Drum temperature detection circuit
Fig. 11-401
 - 7
DRTMP-
CPU
e-STUDIO350/352/353/450/452/453
DRUM RELATED SECTION
11