Image forming apparatus having fixing means error detection

Details Image forming apparatus having fixing means error detection Image forming apparatus having fixing means error detection

1995-05-16

1997-05-27

Royer, William J.

Electrophotography

Control of electrophotography process

Control of fixing

219216, 399 33, G03G 1520

Patent

active

056337043

ABSTRACT:
An image forming apparatus includes image forming means for forming an unfixed image on a recording material; a fixing device for heat-fixing the unfixed image on the recording material, the fixing device including a heater for heating the unfixed image, the heater being controlled at a predetermined temperature during a fixing operation, and a temperature detecting element for detecting the temperature of the heater, wherein power supply to the heater is started after production of image formation start signal; and a discriminating device for discriminating an error in the fixing device on the basis of the temperature of the heater a predetermined period after start of power supply to the heater.

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