Temperature control device for a fixing apparatus

Details Temperature control device for a fixing apparatus Temperature control device for a fixing apparatus

1991-11-19

1994-01-04

Grimley, A. T.

Photocopying

Contact printing

Light boxes

219216, 355285, G03G 1520

Patent

active

052764826

ABSTRACT:
An image forming device in which a toner on a sheet is heated by the heater of a fixing unit. The heater of the fixing unit is heated via a power supply. The temperature of the fixing unit is sensed by a temperature sensor. A controller increases the temperature of the fixing unit to a printing temperature in response to an output signal from the temperature sensor. When not printing, the controller turns off the power supply if the temperature of the fixing unit exceeds a set temperature (which set temperature is lower than the aforesaid printing temperature) and turns on the power supply if the temperature of the fixing unit is less than the set temperature.

REFERENCES:
patent: 4609278 (1986-09-01), Taniguchi
patent: 4671643 (1987-06-01), Shigemura et al.
patent: 4719489 (1988-01-01), Ohkubo et al.

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