Method of detecting waste toner in a container of an image forming apparatus
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United States of America Patent
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-
Jun 17, 2003
Grant Date -
Apr 10, 2003
app pub date -
Oct 4, 2001
filing date -
Oct 4, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Waste toner is detected in a container of an image forming apparatus. An auger is provided within the container. A switch is provided which is operable depending upon a torque associated with operation of the auger. A frequency of activation of the switch is detected. A 'not full', 'near full' and 'full' condition of the waste toner in the container is determined depending upon the frequency of activation of the switch.
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