Temperature control method and system for thermal fixing unit, and image forming apparatus
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Dec 8, 1998
filing date -
May 20, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for controlling a temperature of a thermal fixing unit which is for the purpose of maintaining the balance between a fixing rate and the occurrence of wrinkles even if a distance between paper sheets greatly varies within a printer. When image formation is consecutively made onto a plurality of record mediums without stopping an operation of an image forming apparatus, an interval between the record mediums is detected, and a controlled target temperature for a thermal fixing unit is switched and set in accordance with the interval between the record mediums to control a heat source so that the temperature of the thermal fixing unit reaches the controlled target temperature. The image Corming apparatus may include an electrophotographic recording apparatus such as a copying machine, facsimile and laser printer using a toner.
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