Sheet stacking apparatus, sheet processing apparatus and image forming apparatus
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United States of America Patent
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Aug 11, 2015
Grant Date -
Oct 31, 2013
app pub date -
Apr 16, 2013
filing date -
Apr 27, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention provides a sheet stacking apparatus including a stacking tray whose stacking surface is inclined, a sheet presence/absence detecting sensor that detects presence and absence of a sheet on the stacking surface, an abutting member to which an end of the sheet on the stacking surface abuts, an alignment mechanism that aligns the sheet on the stacking surface widthwise by a pair of aligning members, and a control portion that controls the aligning mechanism. Determining presence of the sheet on the stacking tray from a detected result of the sheet presence/absence detecting sensor, the control portion aligns the sheet by setting a distance between aligning faces of the pair of aligning members as a first distance, and determining absence of the sheet, the control portion sets the distance between the aligning faces of the pair of aligning members as a second distance which is wider than the first distance.
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