Patent ID: 7926800

Claim:
A sheet processing apparatus comprising: a sheet storing unit configured to store a bundle of sheets including at least one folded sheet having a folded portion; a first aligning member configured to align respective edges of sheets of the bundle of sheets stored in the sheet storing unit by engaging with the edges of the bundle of sheets; a conveying unit configured to convey the folded sheet into the sheet storing unit so that the edge of the folded sheet, which is engaged with the first aligning member, is opposite to the folded portion of the folded sheet; a second aligning member configured to align the bundle of sheets stored in the sheet storing unit in a width direction crossing to a sheet conveying direction of the conveying unit; and a sheet processing unit configured to process the bundle of sheets that has been aligned by the first aligning member and the second aligning member, wherein the sheet processing unit is configured to fold the bundle of sheets that has been aligned by the first aligning member and the second aligning member, and wherein the second aligning member is movable in the width direction so as to align the bundle of sheets in the width direction without contact with the folded portion of the folded sheet and in contact with a portion of the folded sheet other than the folded portion thereof.