Patent ID: 7386271

Claim:
A sheet processing apparatus, comprising: a first stacking portion which stacks a sheet; an aligning device which moves in a direction intersecting with a sheet conveying direction and which aligns both sides of the sheet on the first stacking portion; a processing unit which performs a process to the sheet aligned by the aligning device on the first stacking portion; a second stacking portion which is located on an upstream side in the sheet conveying direction of the first stacking portion and which is capable of storing a sheet during the process; and a conveying rotary member which conveys the sheet on the second stacking portion to the first stacking portion, wherein the first stacking portion and the second stacking portion are arranged such that an upstream end in the sheet conveying direction of the sheet stacked on the first stacking portion and a downstream end in the sheet conveying direction of the sheet stored in the second stacking portion overlap each other, and the aligning device is disposed on a downstream side in the sheet conveying direction from the downstream end of the sheet stored on the second stacking portion.