| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sheet processing device, etc. capable of preventing the sheet sheaves stacked on an exit tray from falling.SOLUTION: A sheet processing device 3 according to the present invention comprises: a main exit tray 33 on which ejected sheets P or ejected sheet sheaves S subjected to stapling are stacked; and a sheet alignment mechanism 40 which aligns at least the sheets P stacked on the main exit tray 33 in such a manner as to move the sheets P in a shifting direction orthogonal to an ejection direction and to a stacking direction. The sheet alignment mechanism 40 includes: a pair of alignment members 51A, 51B contactable with at least both end parts of a sheet P in the shifting direction, and moving mechanisms 54A, 54B for moving the respective alignment members 51A, 51B in the shifting direction. When stapling is performed on one end part of a sheet sheaf S in the shifting direction, the moving mechanisms 54A, 54B move the alignment member 51B (51A) in the other end side in the shifting direction to a receiving position P6 displaced outward in the shifting direction from a reference position P3 in contact with the other end part of the sheet P.</p> |
