Patent ID: 7523593

Claim:
A sheet processing device adapted to process a bundle of sheets, the bundle defined by opposing first and second bundle edges, the bundle further including a sealing sheet having a larger size than the other sheets forming the bundle, the sealing sheet including first and second sealing portions which project away from the first and second bundle edges to seal the bundle, respectively, the device comprising: a controller which controls the device; a sheet transporter; a first abutting member against which the first bundle edge is abutted; a second abutting member, provided in a position differing from that of the first abutting member, against which an edge of the first sealing portion is abutted; a folding unit adapted to fold a bundle between the first and second bundle edges together with the sealing sheet; a processing unit adapted to seal the folded bundle using the first and second sealing portions; and a sheet separating member adapted to separate a transported sheet from the other sheets toward either one of the first abutting or second abutting members, wherein the first and second sealing portions of the sealing sheet project away from the first and second bundle edges, respectively, when the first bundle edge abuts against the first abutting member and the first sealing portion abuts against the second abutting member, and wherein the controller switches the separating member depending on whether the transported sheet to be separated is a sheet on which an image is formed, or a sealing sheet.