Temperature controller for photographic heat fixing unit

Details Temperature controller for photographic heat fixing unit Temperature controller for photographic heat fixing unit

1981-04-01

1983-01-04

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3FU, 219216, 219469, 118641, 432 4, 432 12, 432 35, G03G 1500, H05B 102

Patent

active

043670377

ABSTRACT:
A temperature controller for photographic heat fixing unit which may be used in an electrophotographic copying apparatus includes a main temperature for detecting the temperature of a heater or heaters in the fixing unit and an auxiliary temperature sensor for detecting the temperature of a marginal member spaced from the heater or of a record sheet. The temperature level of the fixing unit is controlled in accordance with outputs from the both temperature sensors.

REFERENCES:
patent: 3778222 (1973-12-01), Suzuki
patent: 4075455 (1978-02-01), Kitamura et al.
patent: 4087676 (1978-05-01), Fukase
patent: 4145599 (1979-03-01), Sakurai et al.
patent: 4162847 (1979-07-01), Brandon
patent: 4259565 (1981-03-01), Ogino et al.
patent: 4267434 (1981-05-01), Simpson
patent: 4301359 (1981-11-01), Ito et al.

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