Sheet processing apparatus and image forming apparatus

An image forming apparatus comprising:

• an image forming unit configured to form an image on a sheet;
• and
• a sheet processing apparatus configured to process a folded sheet bundle made of a plurality of sheets on which images are formed, the sheet processing apparatus includes:
• a deforming unit configured to perform deforming processing by deforming a folded spinal portion of the folded sheet bundle into a square shape;
• a cutting unit configured to cut an edge portion, opposite to the folded spinal portion, of the folded sheet bundle;
• a stopper configured to abut against the folded spinal portion of the folded sheet bundle to perform positioning for the folded sheet bundle to be cut by the cutting unit;
• a moving unit configured to move the stopper;
• and
• a control unit configured to control the moving unit so that a distance between the stopper and the cutting unit, when the deforming processing is set, is shorter by a predetermined distance than that when the deforming processing is not set,
• wherein the control unit controls the moving unit so that when the deforming processing is set, a position of the stopper is set closer to the cutting unit by the predetermined distance corresponding to a reduction in length of the folded sheet bundle deformed by the deforming unit.

An image forming apparatus comprising:

• an image forming unit configured to form an image on a sheet;
• a sheet processing apparatus configured to process a folded sheet bundle made of a plurality of folded sheets on which images are formed;
• and
• a control unit configured to control the sheet processing apparatus, the sheet processing apparatus includes:
• a deforming unit configured to perform deforming processing by deforming a folded spinal portion of the folded sheet bundle into a square shape;
• a cutting unit configured to cut an edge portion, opposite to the folded spinal portion, of the folded sheet bundle;
• a stopper configured to abut against the folded spinal portion of the folded sheet bundle to perform positioning for the folded sheet bundle to be cut by the cutting unit;
• and
• a moving unit configured to move the stopper;
• wherein the control unit controls the moving unit so that a distance between the stopper and the cutting unit, when the deforming processing is set, is shorter than that when the deforming processing is not set, and
• wherein the control unit controls the moving unit so that when the deforming processing is set, a position of the stopper is set closer to the cutting unit by the predetermined distance corresponding to a reduction in length of the folded sheet bundle deformed by the deforming unit.