SHEET FOLDING APPARATUS, IMAGE FORMING APPARATUS, AND SHEET FOLDING METHOD

摘要

A sheet folding apparatus includes: a carrying path through which a printed sheet is carried and which has an exit facing upward; a tray on which the sheet carried through the carrying path is stacked while being vertically sloped; an assist roller which rotates in a manner of pushing the sheet against the tray and pushing the sheet upward on the tray before a rear end of the sheet is discharged from the exit after a forward end of the sheet passes the exit of the carrying path, and which rotates in a reverse direction in a manner of pushing the sheet downward on the tray after the rear end of the sheet is discharged from the exit; and a stacker which is provided below the tray and receives and supports the rear end of the sheet pushed down by the assist roller.