Sheet feeder and jam detecting method
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United States of America Patent
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Apr 19, 2011
Grant Date -
Jul 20, 2006
app pub date -
Jan 13, 2006
filing date -
Jan 14, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A transporter is adapted to transport a sheet in a transport direction in a transport path that includes a detecting range. A measurer is disposed at an upstream end of the detecting range in the transport direction, and is operable to measure a moving distance of the sheet. A detector is disposed at a downstream end of the detecting range in the transport direction, and is operable to detect a leading end edge of the sheet. A processor is operable to detect a jam in case that the moving distance is longer than a distance of the detecting range in the transport direction while the leading end edge of the sheet is not detected by the detector.
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