Image forming system, image forming apparatus and program

1. An image forming system, comprising:

an image forming apparatus to produce at least one bunch of recording mediums from a single set of document mediums; and

a finisher to selectively apply a finish processing to one or more of the recording mediums in each said bunch of recording mediums, the finisher being operable in a first finishing mode, a second finishing mode, and a mixture mode, such that (i) in the first finishing mode, each said bunch of recording mediums comprises all finished recording mediums to which the finish processing has been applied, (ii) in the second finishing mode, each said bunch of recording mediums comprises all non-finished recording mediums to which the finish processing has not been applied, and (iii) in the mixture mode, each said bunch of recording mediums comprises a mixture of finished recording mediums and non-finished recording mediums;

wherein the finisher comprises:

a stacking tray to stack the at least one bunch of recording mediums; and

a matching shift section to match and shift the finished recording mediums or the non-finished recording mediums in a direction orthogonal to an ejecting direction of the recording mediums, before the recording mediums are ejected onto the stacking tray; and

wherein, when the image forming system produces the at least one bunch of recording mediums in the mixture mode in which each said bunch of recording mediums includes the finished recording mediums and the non-finished recording mediums intermingled within the bunch of recording mediums, the matching shift section is controlled so that the finished recording mediums and the non-finished recording mediums, both to be intermingled within the bunch of recording mediums, are stacked at a same recording-medium stacking position on the stacking tray.

2. The image forming system of claim 1 , wherein, when the image forming system produces a plurality of the bunches of recording mediums, the matching shift section is controlled so as to change the recording-medium stacking position for each bunch of recording mediums.

3. The image forming system of claim 1 , wherein, when the image forming system produces a plurality of the bunches of recording mediums in the mixture mode, established in advance, from the single bunch of document mediums, the matching shift section is controlled so that the recording-medium stacking positions of the plural bunches of recording mediums on the stacking tray are the same.

4. The image forming system of claim 1 , wherein an operating mode of the image forming system can be selectively set in any one of:

a first stacking mode in which, when the image forming system produces a plurality of the bunches of recording mediums, the recording-medium stacking positions of the bunches are set at a same position on the stacking tray, when the mixture mode is established;

a second stacking mode in which, when the image forming system produces a plurality of the bunches of recording mediums, the non-finished recording mediums and the finished recording mediums within a same bunch are stacked at a same recording-medium stacking position on the stacking tray, and the recording-medium stacking position is changed for each bunch of recording mediums, when the mixture mode is established; and

a third stacking mode in which the recording-medium stacking position is changeable within the same bunch of recording mediums, even when the mixture mode is established.

5. The image forming system of claim 1 , wherein, when the mixture mode is established, the image forming system is controlled such that the non-finished recording mediums and the finished recording mediums within each said bunch are stacked at the same recording-medium stacking position on the stacking tray, even if a setting for changing the recording-medium stacking position is established.

6. The image forming system of claim 1 , wherein the image forming apparatus or the finisher includes:

a first recognition section to recognize whether or not the mixture mode is currently established; and

a second recognition section to recognize, when the image forming system produces a plurality of the bunches of recording mediums, whether or not a stacking changeover from one of the bunches of recording mediums to a next one of the bunches of recording mediums is currently detected; and

wherein the matching shift section is controlled so as to change the recording-medium stacking position based on recognition results outputted by both the first recognition section and the second recognition section.

7. The image forming system of claim 6 , wherein, when the first recognition section recognizes that the mixture mode is currently established and the second recognition section recognizes that the stacking changeover is not currently detected, the matching shift section is controlled so as not to change the recording-medium stacking position; and

wherein, when the first recognition section recognizes that the mixture mode is currently established and the second recognition section recognizes that the stacking changeover is currently detected, the matching shift section is controlled so as to change the recording-medium stacking position.

8. The image forming system of claim 6 , wherein either the image forming apparatus or the finisher includes a third recognition section to recognize whether or not another stacking changeover from a job to a next job is currently detected; and

wherein the matching shift section is controlled so as to change the recording-medium stacking position based on recognition results outputted by the first recognition section, the second recognition section, and the third recognition section.

9. The image forming system of claim 1 , wherein the finish processing is a physical processing applied to recording mediums outputted from the image forming apparatus.

10. The image forming system of claim 1 , wherein the image forming system produces a number of the bunches of recording mediums that is equal to a number of copies to be produced from the single set of document mediums.