Patent ID: 7483652
Filing Date: 2009-01-27
Classification: G03G

Abstract:
1. An image forming apparatus having an image holding body which forms an electrostatic image and at least one of a transfer unit, a developing unit, a charging unit, and a cleaning unit which are arranged so as to face said image holding body, comprising: a pressing unit which applies a pressing force to said at least one unit toward said image holding body; and a gap holding member which is attached to said at least one unit, said gap holding member contacting a surface of said image holding body and holding a gap between said at least one unit and said image holding body, wherein said at least one unit is driven and rotated to said image holding body by a frictional force occurring between said image holding body and said gap holding member, and the frictional force per unit length in the axial direction of said at least one unit occurring between said image holding body and said gap holding member lies within a range from 10 gf/mm or more to 25 gf/mm or less.