US 2008/0136083 A1Published application

Sheet processing apparatus and image forming apparatus including the sheet processing apparatus

AssigneeCanon Finetech Inc.

InventorsKenichi Hayashi, Tomokazu Nakamura, Naoto Watanabe, Yusuke Obuchi, Hitoshi Kato, Shunsuke Nishimura, Tetsuya Terada, Yasutaka Iwasa, Daisuke Matsukura, Norio Motoi, Masayoshi Kubo

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Abstract

A sheet processing apparatus includes: a buffer unit which stores plural supplied sheets with upstream edges in a conveying direction thereof aligned; a processing tray on which sheets discharged from the buffer unit are stacked; and an oscillation roller pair and a return roller which convey the sheet stacked on the processing tray to bring the sheet into abutment against a stopper for receiving the upstream edge of the sheet. The buffer unit is adapted to align the upstream edges of only sheets to be stored before a sheet to be supplied last among the sheets to be stored.

Claims8

Dependent claims

A sheet processing apparatus, comprising:

a sheet holding portion which stores plural supplied sheets with upstream edges in a conveying direction thereof aligned;
sheet stacking means for stacking the sheets discharged from the sheet holding portion;
and
sheet conveying means for conveying the sheets discharged to the sheet stacking means, brining the upstream edges of the sheets into abutment against a receiving stopper for receiving the upstream edges to align the upstream edges, and discharging the sheets from the sheet stacking means,
wherein the plural supplied sheets are discharged to the sheet stacking means from the sheet holding portion when a downstream edge in a conveying direction of a sheet to be supplied last has preceded the downstream edges in the conveying direction of the sheets stored in the sheet holding portion by a predetermined amount.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/026,667Filed 6 Feb 2008
Priority: JP 2003-1083947 Mar 2003
Published: 12 Jun 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

B65H 31/3027
Arrangements for removing completed piles: by the nip between moving belts or rollers
B42C 1/12
Collating or gathering sheets combined with processes for permanently attaching together sheets or signatures or for interposing inserts: machines…
B65H 31/24
Pile receivers: multiple or compartmented, e.d. for alternate, programmed, or selective filling
B65H 39/10
Associating, collating, or gathering articles or webs: associating articles from a single source, to form, e.g. a writing-pad

Family

Application10/789,985Continuation · filed 2 Mar 2004
Application11/560,466Continuation · filed 16 Nov 2006
Application12/026,667Continuation
US 2004/0181308 A1Published application
US 2007/0102860 A1Published application
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US 7,354,036 B2Related patent
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US 2008/0136083 A1This patent

From the US filing history. Foreign family members aren’t listed.