Patent ID: 9665056
Date: 2017-05-30
CPC Classifications: B42B,B65H,G03G

Claim:
1. A post-processing device comprising: a housing; a tray unit in which a plurality of sheets are carried toward a predetermined conveyance direction and on which the plurality of sheets are loaded; a staple unit that is disposed to face ends of front end sides of the sheets in the conveyance direction, is movable along the ends in a sheet width direction perpendicular to the conveyance direction, and performs a staple process on the plurality of sheets; a movement section that moves the staple unit in the sheet width direction; a reference plate that abuts the ends of the plurality of sheets and aligns the plurality of sheets; and an interlocking mechanism that moves the reference plate in the sheet width direction in interlock with movement of the staple unit, wherein the staple unit is inclined by a predetermined angle with respect to the sheet width direction and can be disposed at a first staple position disposed to face a first corner part of the sheets formed by the ends and a second staple position that is an inner side from the first staple position in the sheet width direction and is disposed along the ends, the reference plate can be disposed at a first reference position that is an inner side from the first staple position in the sheet width direction and is disposed so as to overlap the second staple position and a second reference position that is disposed at an outer side from the first reference position and the second staple position in the sheet width direction, the staple unit includes a staple body part and a staple movable part provided to face the staple body part to form a concave portion for allowing entrance of the ends at the front end sides in the conveyance direction of the sheets between the staple movable part and the staple body part to perform a staple process in a vicinity of the ends of the sheets, and the interlocking mechanism disposes the reference plate at the first reference position when the staple unit is disposed at the first staple position, and allows the reference plate to pass through the concave portion provided in the staple unit to move the reference plate from the first reference position to the second reference position in interlock with movement of the staple unit from the first staple position to the second staple position.