Patent ID: 7630681

Claim:
A sheet processing apparatus, comprising: a first stacking portion which stacks a sheet; an aligning device which performs an alignment of the sheet on the first stacking portion for a binding operation by shifting the sheet by a predetermined distance in a direction intersecting with a sheet conveying direction from a conveying position in which the sheet is conveyed to the first stacking portion; a binding unit which binds sheets at a binding position on the first stacking portion; and a second stacking portion which is located upstream in the sheet conveying direction of the first stacking portion and which stores a sheet conveyed during the process on the first stacking portion, wherein the sheet stacked on the first stacking portion and the sheet stored on the second stacking portion overlap each other, and the binding position is provided outside a stacking area of the sheet on the second stacking portion in the direction intersecting with the sheet conveying direction.