Patent ID: 8983339
Filing Date: 2015-03-17
Classification: G03G

Abstract:
1. A developing cartridge comprising a photoconductive body, a charging unit which charges a surface of the photoconductive body and a developing unit which forms a toner image by supplying the surface of the photoconductive body with toner, wherein the charging unit comprises: a shaft which applies a charging voltage and which has a central axis parallel to a rotating axis of the photoconductive body, the shaft having a middle portion which is thicker than opposite end portions in a longitudinal direction along the central axis; a tubular member formed of a conductive material which surrounds the shaft and which is disposed to be in contact with the surface of the photoconductive body; a current carrying member which is disposed on a surface of an inner side of the tubular member and which applies an electric current to the shaft and the tubular member, the tubular member rotating relative to the current carrying member; and a damping member which is disposed between the shaft and the current carrying member.