Patent ID: 8066277
Filing Date: 2011-11-29
Classification: B65H

Abstract:
1. An image forming apparatus comprising a sheet feeder apparatus including a sheet storage portion, the sheet storage portion including a regulating member and a fixing portion, the regulating member being provided to be able to be moved in a width direction orthogonal to a sheet feeding direction, the regulating member regulating a position of a sheet in the width direction, the fixing portion fixing the regulating member to a position according to a size of the sheet, the sheet feeder apparatus feeding the sheet whose position in the width direction is regulated by the regulating member, wherein the fixing portion includes: a plurality of rack gears which are provided on a surface opposite a surface abutting on the sheet of the regulating member, the rack gears extended in a moving direction of the regulating member; a plurality of relay gears which engage the plurality of rack gears respectively; a rotating shaft on which the plurality of relay gears are provided, the rotating shaft being moved according to movement of the regulating member; and lock mechanism which includes: a plurality of lock gears which are provided on the rotating shaft, a lock member which has a gear portion, the gear portion engaging the plurality of lock gears to fix the lock gears, and a plurality of one-way clutches which are provided between the rotating shaft and the plurality of lock gears respectively, the one-way clutches having different lock directions in which the one-way clutches restrict relative rotations between the rotating shaft and the plurality of lock gears, wherein the lock mechanism regulates rotation of the rotating shaft so as to regulate both movement of the regulating member in a direction in which the regulating member is moved away from the regulated sheet and movement of the regulating member in a direction in which the regulating member contacts the regulated sheet.