Finisher for image forming apparatus

Details Finisher for image forming apparatus Finisher for image forming apparatus

2006-07-17

2008-09-30

Crawford, Gene O. (Department: 3651)

Sheet-material associating

Associating or disassociating

Sheet associating

C270S058070, C270S058080, C270S058090, C271S182000, C271S188000, C271S209000

Reexamination Certificate

active

07429038

ABSTRACT:
A finisher for an image forming apparatus includes a pair of rotatable downstream rollers and a pair of rotatable upstream roller between which a path on which an imaged medium travels. The finisher determines when a trailing edge of the medium is about to leave a nip of the upstream rollers and then stops a leading edge of the medium. By stopping the leading edge of the medium, the medium buckles and the trailing edge registers against the upstream nip line. A finishing device performs a hole punch, staple, or other finishing operation to the medium when the trailing edge registers against the upstream nip line. The finishing operation is performed at a speed equal to or greater than a speed at which the image forming apparatus forms the image on the medium and outputs the medium to the finisher.

REFERENCES:
patent: 5509645 (1996-04-01), Shinno et al.
patent: 5689795 (1997-11-01), Mastrandrea
patent: 6014920 (2000-01-01), Yamauchi et al.
patent: 6361036 (2002-03-01), Nakazawa
patent: 6805347 (2004-10-01), Kuramoto

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