SEAMLESS TUBE COVERING DEVELOPING ROLLER

摘要

PROBLEM TO BE SOLVED: To provide a developing roller for easily obtaining products whose resistance values are uniform and at prescribed values and making the resistance of the products stable and a change in the resistance during use small. ;SOLUTION: The roller 4 is constituted of a conductive supporting body 15 and a semiconductive seamless tube 16 for covering the outer periphery of the supporting body 15 and to supply toner to a photoreceptor drum for holding an electrostatic latent image on the surface and develop the electrostatic latent image. In such a case, in the seamless tube 15, a semiconductive thermoplastic resin composition is extruded a tube by an extruder 22, a tube shape state is maintained, cooled/solidified and then, cut off with a fixed length.;COPYRIGHT: (C)1998,JPO