Patent ID: 7413180

Claim:
A sheet finishing apparatus comprising: a tray device arranged below a discharge outlet for sequentially stacking and storing a sheet; a corner support device arranged between the discharge outlet and the tray device for supporting a corner of the sheet; a finishing device for finishing the sheet on the corner support device; a first support device for supporting the corner support device, said first support device moving the corner support device between an operating position positioned in a sheet conveying path from the discharge outlet to the tray device, and a retracted position retracted from the operating position, a second support device for supporting the finishing device, said second support device being formed separately from the first support device and moving the finishing device between an operating position positioned in the sheet conveying path to a retracted position retracted from the operating position; a drive device for moving the first support device and the second support device from the operating positions to the retracted positions, respectively, after finishing the sheet with the finishing device, and an aligning device disposed on the corner support device, said aligning device being arranged to contact the corner of the sheet on the corner support device from above and to move the sheet toward the finishing device while aligning the sheet.