A sheet binding apparatus includes a stack portion on which sheets are stacked; a manual setting portion, different from the stack portion, to which sheets are manually set from an outside of the apparatus; a first binding portion binding sheets stacked on the stack portion and set on the manual setting portion, the first binding portion being movable to a first position where sheets on the stack portion are bound and to a second position, different from the first position where sheets set on the manual setting portion are bound; and a second binding portion binding sheets stacked on the stack portion, the second binding portion being different from the first binding portion. The first position is set, with respect to a moving direction of the first binding portion, between the second position and a third position where the second binding portion binds sheets stacked on the stack portion.

The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process rapidly and efficiently while the binding process can be selected by an operator. The present invention comprises a sheet bundle binding processing apparatus including a processing tray on which sheets are stacked, an insertion portion to which a sheet bundle is inserted, a first binding device which performs a predetermined binding process on a sheet bundle stacked on the processing tray and the predetermined binding process on a sheet bundle inserted to the insertion portion, and a second binding device which performs a binding process being different from the predetermined binding process on a sheet bundle stacked on the processing tray.

A finisher for binding a sheet bundle includes a conveying portion for conveying sheets, a stacking portion for stacking the sheets, a manual setting portion to which the sheet bundle is inserted by an operator, a stapler having a head at a front portion thereof for binding the sheet bundle by a staple and a cartridge at a rear portion for housing the staple, a stapler moving unit for moving the stapler to a first stapling position for binding a corer portion of the sheet bundle, a second stapling position for binding the sheet bundle inserted into the manual setting portion and a staple loading position for removing the cartridge and replenishing a new cartridge, and a moving unit for rotating the stapler to a posture such that the rear portion rather than the front portion of the stapler is located at a front side in the depth direction.