Sheet processing apparatus and image forming apparatus using same
AssigneeCanon Kabushiki Kaisha
InventorsNaho Saitoh, Yoshifumi Takehara, Kazuyuki Iwamoto, Kenichi Hayashi, Wataru Kawata
Life of this patent
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Abstract
A sheet processing apparatus has a first stacker for stacking discharged sheets; a feeder for feeding a set of sheets from the first stacker; and second stacker for stacking the set of sheets fed by the feeder. A shifting device shifts the sheets stacked on the first stacker and; a controller groups the sheets in a set into a plurality of groups of sheets, and stacks, shifts and feeds the sheets, for each group, to the first stacker, and stacks the set of sheets on the second stacker.
Claims22
A sheet processing apparatus comprising:
- first stacking means for stacking sheets discharged thereto;
- feeding means for feeding sheets from said first stacking means;
- second stacking means for stacking the sheets fed by said feeding means;
- shifting means for shifting the sheets stacked on said first stacking means;
- and
- control means for grouping the sheets in a set into a plurality of groups of sheets, and stacking, shifting and feeding the sheets, for each group, to said first stacking means, and for stacking the set of sheets on said second stacking means.
A sheet processing apparatus wherein sets of sheets are offset for each set, comprising:
- first stacking means for stacking sheets discharged thereto;
- feeding means for feeding sheets from said first stacking means;
- second stacking means for stacking the sheets fed by said feeding means;
- shifting means for shifting the sheets stacked on said first stacking means;
- and
- control means for grouping the sheets in a set into a plurality of groups of sheets, stacking of the sheets onto said first stacking means, and feeding the sheets onto said second stacking means, said control means controlling said shifting means to offset each group of a first set of sheets relative to each group of a second set of sheets to stack the first set of sheets and the second set of sheets at offset positions on said second stacking means.
A sheet processing apparatus comprising:
- first stacking means for stacking sheets discharged thereto;
- feeding means for feeding a set of sheets from said first stacking means;
- second stacking means for stacking the set of sheets fed by said feeding means;
- aligning means for aligning the sheets stacked on said first stacking means;
- control means for grouping the sheet in a set into a plurality of groups of sheets, and stacking, aligning and feeding the sheets, for each group, to said first stacking means, and for stacking the set of sheets on said second stacking means.
Dependencies are inferred from the claim text.