Image forming apparatus having fixing means error detection
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United States of America Patent
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May 27, 1997
Issued Date -
N/A
app pub date -
May 16, 1995
filing date -
Feb 20, 1990
priority date (Note) -
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status (Latency Note)
Importance
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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