Sheet finisher, image forming apparatus using the same, and...

Sheet-material associating – Associating and folding – Sheet associating

Reexamination Certificate

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Details

C270S032000, C270S037000, C270S058070

Reexamination Certificate

active

07997572

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, with a staple, 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 roller unit that includes a reinforce roller and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, a drive unit configured to move the roller unit along the direction of the fold line, and a control unit configured to control a movement speed of the roller unit, and the control unit causes the roller unit to move at a first speed in an outside of a specified range including the edge of the staple, and causes the roller unit to move at a second speed not higher than the first speed in the specified range including the edge of the staple.

REFERENCES:
patent: 6003853 (1999-12-01), Nakazawa et al.
patent: 6905118 (2005-06-01), Yamada et al.
patent: 7604225 (2009-10-01), Fukatsu et al.
patent: 2004/0070133 (2004-04-01), Yamada et al.
patent: 2007/0045926 (2007-03-01), Fukatsu et al.
patent: 2003-182928 (2003-07-01), None
patent: 2004-059304 (2004-02-01), None
patent: 2004-106991 (2004-04-01), None
patent: 2005-089140 (2005-04-01), None
patent: 2005-162345 (2005-06-01), None
U.S. Office Action dated Aug. 24, 2010 corresponding to U.S. Appl. No. 12/104,496, filed Apr. 17, 2008.

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