| 摘要 |
A shifting unit shifts a plurality of sheets discharged on a tray to a different position in a sheet width direction that is perpendicular to a sheet discharging direction in a set of sheets. A first width-direction aligning unit and a second width-direction aligning unit align both sides of the sheets in the sheet width direction. A leading-edge aligning unit aligns leading edges of the sheets in the sheet discharging direction.
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