| 摘要 |
PROBLEM TO BE SOLVED: To achieve increment of a binding number in binding processing without using a binding needle.SOLUTION: A paper post-processing device 3 includes a paper loading tray 23 loading sheets of paper, and a first and a second end binding part 25a, 25b performing binding processing without a binding needle with respect to a paper bundle PB loaded on the paper loading tray 23. The first and the second end binding part 25a, 25b include the first end binding part 25a binding a second binding part PS2 in a back side PBB of the paper bundle PB and the second end binding part 25b binding a first binding part PS1 of the paper bundle PB. A predetermined number (2n-number) of sheets of paper are alternately bound while they are overlapped. At that time, it is preferred that a midship part of the back side PBB of the paper bundle PB and endpoint parts of the back side PBB are alternately bound so as to be one paper bundle bundling the whole of it. |
