Patent ID: 8882646
Filing Date: 2014-11-11
Classification: C08G,C08K,C08L,F16C,G03G,Y10T

Abstract:
1. A semiconductive roller comprising: a roller body having an outer peripheral surface made of a semiconductive rubber composition; and an oxide film formed by ultraviolet irradiation covering the outer peripheral surface of the roller body, wherein the semiconductive rubber composition contains a base polymer, a crosslinking component for crosslinking the base polymer, 3 to 7 parts by mass based on 100 parts by mass of the base polymer of a metallic oxide or aliphatic acid vulcanization accelerator, and 1 to 5 parts by mass based on 100 parts by mass of the base polymer of an acid acceptor, the base polymer is a mixture of a bicopolymer E containing epichlorohydrin and nitrile-butadiene rubber N, while the mass ratio E/N of the bicopolymer E and the nitrile-butadiene rubber N in the mixture is 50/50 to 80/20, and the crosslinking component includes