Sheet processing apparatus and image forming apparatus...

Manufacturing container or tube from paper; or other manufacturi – Bending – Folding

Reexamination Certificate

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Details

C493S254000, C493S416000, C493S424000, C493S449000

Reexamination Certificate

active

06837840

ABSTRACT:
A sheet processing apparatus for folding a sheet bundle at a predetermined position includes paired rotating bodies for folding the sheet bundle having nip portions, a pressing device for pressing the predetermined position of the sheet bundle into the nip portions of the paired rotating bodies, and a device connected to the paired rotation bodies for providing rotation to the paired rotating bodies. A pulling force of the rotating bodies to pull the sheet bundle pressed into the nip portions of the rotating bodies has an amount which does not separate a sheet of the sheet bundle contacting the rotating bodies from the subsequent sheets in the sheet bundle when pulling the sheet bundle.

REFERENCES:
patent: 411151 (1889-09-01), Kneeland
patent: 1501774 (1924-07-01), Heeter et al.
patent: 1693147 (1928-11-01), King
patent: 3576051 (1971-04-01), Click et al.
patent: 4717375 (1988-01-01), Lundmark
patent: 5007891 (1991-04-01), von Hein
patent: 5169376 (1992-12-01), Ries et al.
patent: 6022011 (2000-02-01), Hirose
patent: 6568668 (2003-05-01), Wakabayashi et al.

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