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

1. 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 first binding process on a sheet bundle stacked on the stack portion and the first binding process on a sheet bundle inserted to the insertion portion;

a second binding device which performs a second binding process being different from the first binding process on a sheet bundle stacked on the stack portion; and

a controller which controls at least one of the first binding device and the second binding device to bind a sheet bundle stacked on the stack portion,

wherein the controller causes the first binding device to perform the first binding process on a sheet bundle inserted to the insertion portion and the second binding device not to perform the second binding process on the sheet bundle inserted to the insertion portion.

2. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the first binding device is structured with a staple binding device, and

the second binding device is structured with a non-staple binding device.

3. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the insertion portion is arranged at a position being adjacent to the stack portion.

4. The sheet bundle binding processing apparatus according to claim 1 ,

wherein a first binding position where sheets are bound staple 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, and

a second binding position for the second binding device is arranged at an opposite side to the insertion port as sandwiching the introducing area.

5. The sheet bundle binding processing apparatus according to claim 4 ,

wherein the second binding device is arranged at a position being apart from the introducing area by a predetermined distance.

6. The sheet bundle binding processing apparatus according to claim 4 ,

wherein the first binding device is a stapling unit which staple-binds a sheet bundle, and

a staple replenishment position of the stapling unit is set at an opposite side to the second binding device as sandwiching the introducing area.

7. The sheet bundle binding processing apparatus according to claim 4 ,

wherein the stack portion is structured so that sheets having different sizes are discharged in center reference from the sheet discharging port, and

the second binding position is set closer to the sheet center than a third binding position where the first binding device binds sheets inserted to the insertion portion.

8. The sheet bundle binding processing apparatus according to claim 4 ,

wherein 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.

9. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the first binding device is arranged to be movable between a position where the first binding device binds a sheet bundle which has been stacked on the stack portion and a position where the first binding device binds a sheet bundle which has been inserted to the insertion portion.

10. The sheet bundle binding processing apparatus according to claim 1 , further comprising:

a sheet regulating device in which an end in a discharging direction of a sheet discharged to the stack portion is regulated as being abutted thereto; and

an aligning device which performs biasing and aligning on the sheets discharged to the stack portion in a direction crossing to the sheet discharging direction,

wherein the sheet regulating device is structured with an end regulating member by which an end edge of a sheet discharged onto the stack portion is regulated as being abutted thereto,

the aligning device is structured with a pair of aligning members which aligns side edges of a sheet discharged to the stack portion to a predetermined reference position, and

the second binding device is arranged between the end regulating member and the aligning members in the discharging direction.

11. The sheet bundle binding processing apparatus according to claim 10 ,

wherein the controller causes the aligning device to align a sheet bundle stacked on the stack portion to a reference position, and then, to move the sheet bundle toward a binding position for the second binding device.

12. The sheet bundle binding processing apparatus according to claim 1 ,

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.

13. The sheet bundle binding processing apparatus according to claim 1 , further comprising:

a rotor which conveys a sheet discharged to the stack portion in a direction opposite to a sheet discharging direction; and

an aligning device which performs biasing and aligning on a sheet introduced by the rotor in a direction perpendicular to the sheet discharging direction,

wherein the second binding device is arranged between the rotor and the aligning device in the sheet discharging direction.

14. The sheet bundle binding processing apparatus according to claim 1 ,

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 the first 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.

15. The sheet bundle binding processing apparatus according to claim 14 , further comprising a slide cam which regulates angular posture of the stapling unit to be in parallel to the guide portion,

wherein a corner binding position where the first binding process is performed on a corner of sheets stacked on the stack portion is set between the staple replenishment position and the first binding position where the first binding process is performed on a plurality of positions of an end portion of a sheet bundle stacked on the stack portion, and

the slide cam varies posture of the stapling unit to be inclined by a predetermined angle against a sheet bundle stacked on the stack portion at the corner binding position.

16. The sheet bundle binding processing apparatus according to claim 15 ,

wherein the slide cam causes the stapling unit at the second binding position to be maintained at the angle against a sheet bundle stacked on the stack portion to have a same posture as at the first binding position.

17. An image forming system, comprising:

an image forming unit which sequentially forms an image on a sheet, and

a sheet bundle binding processing unit in which sheets fed from the image forming unit are stacked and a binding process is performed thereon,

wherein the sheet bundle binding processing unit is the sheet bundle binding processing apparatus according to claim 1 .

18. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the second binding device is arranged at a position not to be able to perform the second binding process on a sheet bundle inserted to the insertion portion.

19. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the insertion portion includes a setting portion for setting a sheet bundle which has been inserted,

the setting portion is disposed at a position different from the stack portion, and

the controller causes the first binding device to perform the first binding process on a sheet bundle which has been set on the setting portion and the second binding device to not perform the second binding process on the sheet bundle which has been set on the setting portion.

20. The sheet bundle binding processing apparatus according to claim 19 ,

wherein the first binding device is arranged to be movable between a position where the first binding device binds a sheet bundle which has been stacked on the stack portion and a position where the first binding device binds a sheet bundle which has been set on the setting portion.

21. The sheet bundle binding processing apparatus according to claim 19 ,

wherein the insertion portion receives a sheet bundle manually inserted from an outside of the sheet bundle binding processing apparatus.

22. The sheet bundle binding processing apparatus according to claim 1 ,

wherein the insertion portion receives a sheet bundle manually inserted from an outside of the sheet bundle binding processing apparatus.

23. 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.

24. 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.

25. 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.