| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet folding device capable of preventing breaking of a bundle of sheets while preventing reduction of quality of the delivered bundle of sheets, a post-processing device and an image forming device. SOLUTION: The sheet folding device 20 is provided with a pair of folding rollers 25 for nipping the bundle of sheets to a nip part and folding the bundle of sheets; and a folding blade 28 advanceably/retreatably provided relative to the nip part of the folding roller 25. A pair of temporary folding rollers 30 formed narrower than the minimum width of the passable sheet, nipping the bundle of sheets to the nip part and folding the bundle of sheets is provided between the folding roller 25 and the folding blade 28. On the folding blade 28, an escaping part 28f for avoiding interference with the temporary folding roller 30 when the folding blade advances toward the folding roller 30 is formed. COPYRIGHT: (C)2008,JPO&INPIT
|
