Patent ID: 9665029
Date: 2017-05-30
CPC Classifications: D01D,D10B,G03G

Claim:
1. An electro-conductive roller for applying a charge to a member in order to provide a charged member, comprising: a mandrel; and an electrode layer made of a polymer fiber having an electro-conductivity, the polymer fiber being wound around a periphery of the mandrel and covering a peripheral surface of the mandrel, said polymer fiber being aligned in a circumferential direction of the mandrel, wherein the electrode layer has a surface resistivity in an axial direction of the electro-conductive roller of at least ten times as high as a surface resistivity of the electrode layer in the circumferential direction of which the polymer fiber is aligned, and no electrical gap exists between the polymer fiber of the electrode layer such that a direct electrical discharge is prevented between the mandrel and the charged member.