Patent ID: 7841589
Filing Date: 2010-11-30
Classification: B65H

Abstract:
1. An image forming apparatus comprising: an image forming portion which forms an image on a sheet; a control portion which controls said image forming portion; and a sheet processing apparatus which processes sheets on which images are formed after aligning sheets, wherein said sheet processing apparatus includes: a stacking portion which stacks sheets on each of which an image is formed; a sheet conveying portion which conveys the sheets to said stacking portion; a pair of aligning members which are configured to face with each other, and movable independently to align edge portions of the sheet stacked in said stacking portion along a sheet conveying direction; and a binding part which selectively performs a binding process at one of the edge portions of the sheets aligned by said pair of aligning members, wherein said control portion selects one of the edge portions of the sheets to be bound by said binding part from the edge portions of the sheets along the sheet conveying direction, and selects one of said pair of aligning members at the side of the one of the edge portions to be bound as a reference of the alignment, while the other of said pair of aligning members presses the sheets against the one of aligning members, and wherein said control portion controls said image forming portion so that the one of the edge portion of the sheet selected at the side of the one of said pair of aligning members to be selected as the reference of the alignment is determined as a reference of the image to be formed.