Sheet finisher, image forming apparatus using the same, and sheet finishing method
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United States of America Patent
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Sep 20, 2011
Grant Date -
Sep 2, 2010
app pub date -
May 13, 2010
filing date -
Jun 19, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a placement table on which the sheet bundle transported from the fold unit is placed, and a roller unit that includes a reinforce roller and moves the reinforce roller along a direction of the fold line while pressing it to the fold line, and the placement table is provided with a groove-like edge clearance along an edge of the sheet bundle.
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