CONDUCTIVE CONJUGATE FIBER AND CONTACT CHARGING BRUSH MADE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a conductive fiber for a charging brush to apply electric charge to a photoreceptor of an electrophotographic device and capable of more uniformly charging the photoreceptor to get improved picture quality. SOLUTION: The conductive conjugate fiber is used in a contact brush placed in contact with a charging object and contacting with the object by the application of voltage. The conductive conjugate fiber and the contact charging brush of an electrophotographic device composed of the fiber are characterized that a conductive layer made of a thermoplastic polymer containing conductive particles and a non-conductive layer bonded to the conductive layer and made of a thermoplastic polymer compatible with the thermoplastic polymer of the conductive layer. The conductive layer is divided into a plurality of regions by a continuing non-conductive layer, the fineness of each conductive layer is≤1.5 dtex and at least a part of all conducive layer is exposed on the fiber surface. The invention further provides a contact charging brush of an electrophotographic device composed of the fiber. COPYRIGHT: (C)2006,JPO&NCIPI