Patent ID: 7762536
Filing Date: 2010-07-27
Classification: B65H

Abstract:
1. A sheet processing apparatus comprising: a folding unit which folds a sheet bundle comprised of a plurality of sheets; a conveying portion which conveys the sheet bundle folded by the folding unit with a folded portion of the folded sheet bundle as a leading portion; a sheet bundle pressurizing unit which is supported by a housing, which is movable between one end portion and the other end portion of the sheet bundle along the folded portion, at a position offset to the one end portion from a center of the housing in a width direction perpendicular to a conveying direction by the conveying portion and capable of pressurizing the folded portion when it moves; and a controller which controls the sheet bundle pressurizing unit, wherein the housing is movable to a sheet bundle discharge enable position where the folded sheet bundle after being pressurized is permitted to be discharged by the conveying portion, and if the sheet size in the width direction of the sheet bundle to be pressurized is larger than a predetermined size, the controller controls the sheet bundle pressurizing unit such that the sheet bundle discharge enable position is set to the outside of a conveying area on a side of the sheet bundle where the sheet bundle pressurizing unit comes close the end portion of the sheet bundle when the housing moves to the sheet bundle discharge enable position, and' if the sheet size in the width direction of the sheet bundle to be pressurized is smaller than a predetermined size, the controller controls the sheet bundle pressurizing unit such that the sheet bundle discharge enable position is set to the outside of the conveying area on both sides of the sheet bundle.