Sheet processing apparatus provided with sheet sensor and image forming apparatus
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Oct 23, 1998
filing date -
Oct 27, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sheet processing apparatus has a sheet stacking tray supported for upward and downward movement, a lifting/lowering unit for lifting and lowering the sheet stacking tray, a first sensor for sensing the uppermost surface position of a batch of sheets on the stacking tray and lowering the stacking tray a prescribed amount through the lifting/lowering unit, and a second sensor for sensing that the batch of sheets on the stacking tray is partly drawn out and lifting the stacking tray through the lifting/lowering means to thereby return the stacking tray to a position proper to discharge sheets.
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