Temperature control apparatus

Details Temperature control apparatus Temperature control apparatus

1983-08-18

1986-07-29

Albritton, Clarence L.

Electric heating

Heating devices

Combined with diverse-type art device

355 14FU, 219494, 219492, G03G 1520

Patent

active

046032452

ABSTRACT:
A temperature control apparatus for a copying machine has a halogen heater for heating a fixing roller, a thermistor for detecting the surface temperature of the fixing roller, and a microcomputer for performing ON/OFF control of the halogen heater in accordance with an output from the thermistor. After the heater is turned on or off, the heater is kept in the ON or OFF state for a predetermined period time irrespective of the output from the thermistor. A waiting time before using the copying machine after the power is turned on is shortened without requiring a heater having a high output power. Erratic operation due to noise generated upon turning on or off of the heater is prevented.

REFERENCES:
patent: 3851144 (1974-11-01), Hutner
patent: 3878358 (1975-04-01), Barton
patent: 3916146 (1975-10-01), Hutner
patent: 4006985 (1977-02-01), Hutner
patent: 4180721 (1979-12-01), Watanabe
patent: 4256951 (1981-03-01), Payne
patent: 4277670 (1981-07-01), Mori
patent: 4318612 (1982-03-01), Brannan
patent: 4340807 (1982-07-01), Raskin
patent: 4374321 (1983-02-01), Cunningham
patent: 4400613 (1983-08-01), Popelish
patent: 4415800 (1983-11-01), Dodge

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