Patent ID: 8246030

Claim:
A sheet folding apparatus for use in folding a sheet of recording medium, the sheet folding apparatus comprising: a first folding unit configured to fold a sheet along at least one first fold that extends orthogonal to a direction of conveyance of the sheet; a second folding unit configured to fold a sheet along at least one second fold that extends orthogonal to the first fold; a first exit configured to output a sheet having not been folded by any one of the first folding unit and the second folding unit; a second exit configured to output a sheet folded by the first folding unit; a third exit configured to output a sheet folded by the first folding unit and the second folding unit; a folded-sheet conveying unit configured to convey a sheet folded by the first folding unit to the second folding unit; and a first stacker unit in which sheets are to be stacked, the first stacker unit being arranged above the folded-sheet conveying unit, wherein the sheet output from the first exit is stacked in the first stacker unit.