SHEET PROCESSING DEVICE, IMAGE FORMING SYSTEM, AND SHEET PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To improve quality of a sheet after a fold is strengthened, in a sheet processing device for strengthening the fold of the sheet for being conveyed in a folded state.SOLUTION: A sheet processing device includes a pressing part that presses a fold of a sheet conveyed in a folded state from a folding processing device for performing folding processing for the sheet. The pressing part is arranged with respect to the folding processing device so that the fold of the sheet conveyed from the folding processing device in the state of making the fold and the other parts of the sheet overlap each other in the folded state can be pressed from a fold side with respect to the other parts of the sheet overlapping the fold.