Sheet bundle binding processing apparatus and image forming system having the same

A sheet bundle binding processing apparatus, comprising:

• a stack portion 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 stack portion and the predetermined binding process on a sheet bundle inserted to the insertion portion;
• a second binding device which performs a binding process being different from the predetermined binding process on a sheet bundle stacked on the stack processing portion;
• and
• a controller,
• wherein
• a binding position where sheets are bound by the first binding device is arranged in an introducing area of a sheet to be fed from a sheet discharging port to the stack portion,
• the insertion portion is arranged outside the introducing area,
• a binding position for the second binding device is arranged at an opposite side to the insertion port as sandwiching the introducing area,
• a home position of the first binding device is set at the insertion portion side outside the introducing area, and
• the controller causes the first binding device to be positioned at the home position at a time of apparatus activation or post-processing completion.

A sheet bundle binding processing apparatus, comprising:

• a stack portion 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 stack portion 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 stack processing portion,
• wherein a sheet supporting face of the insertion portion and a sheet supporting face of the stack portion are arranged approximately on a same plane.

A sheet bundle binding processing apparatus, comprising:

• a stack processing-portion 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 stack portion 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 stack processing portion,
• wherein the first binding device is structured with a stapling unit which staple-binds a sheet bundle, and
• the stapling unit is supported to be movable by a guide portion along an end edge of a sheet discharged onto the stack portion, so that the stapling unit is movable along the guide portion among a first binding position where a binding process is performed on an end portion of a sheet bundle stacked on the stack portion, a staple replenishment position where staples are replenished, and a second binding position where a sheet bundle inserted to the insertion portion is bound.