Patent ID: 7604225

Claim:
A sheet processing apparatus comprising: a folding unit which folds a sheet bundle comprised of a plurality of sheets; a discharge portion which discharges the sheet bundle folded by the folding unit; a sheet bundle pressurizing unit which is capable of pressurizing a folded portion of the folded sheet bundle when it moves from one end portion of the sheet bundle to the other end portion, or from the other end portion to the one end portion along the folded portion of the folded sheet bundle; a housing which supports the sheet bundle pressurizing unit disposed at a position offset to the one end portion from a center of the housing in a moving direction of the sheet bundle pressurizing unit; and a controller which controls the sheet bundle pressurizing unit, wherein the sheet bundle pressurizing unit is movable to a sheet bundle discharge enable position where the folded sheet bundle after being pressurized is permitted to be discharged by the discharge portion with the folded portion thereof as a leading portion, and if the sheet size in a direction perpendicular to the direction of discharging the sheet bundle to be processed is larger than a predetermined size, the controller controls such that the sheet bundle discharge enable position of the sheet bundle pressurizing unit is set to the one end portion side.