Patent ID: 7529497
Filing Date: 2009-05-05
Classification: G03G

Abstract:
1. A charger comprising: a corona discharge member; a belt member having an area with teeth and a slip area to move back and forth along the corona discharge member; a cleaning member fixed to the belt member to make contact with the corona discharge member; a belt drive member to make contact with the area with teeth of the belt member in a meshing state where teeth mesh with the belt drive member or with the slip area of the belt member in a slipping state where the belt member slides with respect to the belt drive member, and move back and forth the belt member; and a position detection switch to detect that the cleaning member is at a position not in contact with the corona discharge member, wherein the slip area of the belt member makes contact with the belt drive member when the cleaning member is at a position not in contact with the corona discharge member, and the area with teeth of the belt member meshes with the belt drive member when the cleaning member is at a position in contact with the corona discharge member.