| 摘要 |
PURPOSE:To obtain a long-life developer carrier which a line image is obtained with a high density, by grinding the surface to expose conductive particles after the first adhesive layer, a conductive particle layer which has the surface coated with a dielectric, and the second adhesive layer are formed in order on a conductive supporting material. CONSTITUTION:In respect to a sleev which carries a developer of an electrostatic latent image on an electrophotographic photoreceptor, a thermosetting resin powder such as an epoxy resin powder is applied to the surface of a cylindrical conductive supporting material 1 by electrostatic coating or the like and is hardened by heating and is polished to eliminate the ruggedness, and thus, a dielectric layer 2a having a thickness t2 (about 300mu) is formed. After the first adhesive layer 5 consisting of a cold-setting liquid epoxy resin or the like is formed, conductive particles 6a coated preliminarily with dielectrics are scattered uniformly before the layer 5 is hardened. The same adhesive as the adhesive layer 5 is applied onto particles 6a to provide the second adhesive layer 9, and layers 5 and 9 are hardened. Thereafter, the surface is polished to expose particles 6a. Thus, a narrow line image is obtained with a high toner density similarly to a solid image. |
