Sheet processing apparatus and image forming apparatus

Details Sheet processing apparatus and image forming apparatus Sheet processing apparatus and image forming apparatus

2006-11-20

2010-06-01

Crawford, Gene (Department: 3651)

Sheet-material associating

Associating and folding

C270S004000, C270S020100, C270S037000, C270S045000, C270S058070

Reexamination Certificate

active

07726638

ABSTRACT:
Provided is a sheet processing apparatus for performing a bookbinding process by folding a sheet stack, including: a folding roller pair including a first roller and a second roller brought into press contact with the first roller to be contacted/separated with/from the first roller, for conveying the sheet stack while folding the sheet stack; a plurality of urging members capable of urging the second roller in a direction of the first roller; and an urging mechanism for changing a number of the urging members for urging the second roller according to a thickness of the sheet stack to be folded.

REFERENCES:
patent: 3786742 (1974-01-01), Hertrich
patent: 3841621 (1974-10-01), Brown
patent: 5346199 (1994-09-01), Martin et al.
patent: 6268909 (2001-07-01), Honmochi et al.
patent: 0 781 722 (1997-07-01), None
patent: 0 957 408 (1999-11-01), None
patent: 1 291 961 (1972-10-01), None
patent: 11-322180 (1999-11-01), None

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