| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sheet processing device and an image formation that can suitably process a sheet even when a folding groove is formed.SOLUTION: A stripe making unit 454 forms a striped folding groove on a fist surface of a sheet P, and folding means folds the sheet along the folding groove. Then a folding groove breaking roller pair 455 is provided between the stripe making unit 454 and folding means, and breaks a projection part formed on a second surface on the opposite side from the first surface of the sheet when the folding groove is formed.</p> |
