Patent ID: 9096091
Filing Date: 2015-08-04
Classification: B42C,B65H,G03G

Abstract:
1. A postprocessing apparatus, comprising: a stacking unit configured to stack and process a sheet; an abutting unit that is provided on the stacking unit and configured to abut a rear end of the sheet to correct a position of the sheet in a sheet conveying direction; a conveying unit including a rotating body that conveys the sheet to abut the rear end of the sheet against the abutting unit on the stacking unit; a shift conveying unit that is provided on a sheet conveying path at an upstream side of the stacking unit and configured to shift the sheet in a width direction perpendicular to the sheet conveying direction while conveying the sheet in the sheet conveying direction; and a width direction detector configured to detect a width direction position of the sheet on the stacking unit, wherein when the sheet on the conveying path is shifted by the shift conveying unit by a set amount until a side of the sheet is detected by the width direction detector, a distance from a position where the width direction detector is placed to a position of the rear end of the sheet, which is approximate to a bifurcation unit, in the sheet conveying direction corresponds as a distance A, and when the sheet on the stacking unit is abutted against the abutting unit by the conveying unit, a distance from a position where the conveying unit is placed to a position of the abutting unit in the sheet conveying direction corresponds as a distance B, such that the distances A and B are the same.