Patent ID: 9539744
Date: 2017-01-10
CPC Classifications: B29C,B29K,B29L,C08K,C08L,G03G,Y10T

Claim:
1. A semiconductive roller comprising: a tubular body formed by crosslinking a rubber composition; a shaft inserted through the tubular body; and an oxide film provided in an outer peripheral surface of the tubular body; the rubber composition comprising: a rubber component including only an acrylonitrile butadiene rubber (NBR) and an ethylene propylene diene rubber (EPDM) in a mass ratio of NBR/EPDM=70/30 to 30/70; a predetermined proportion of at least one carbon black selected from the group consisting of SAF, ISAF and HAF, the predetermined proportion being adjusted to be less than 50 parts by mass based on 100 parts by mass of the overall rubber component so that the semiconductive roller has a roller resistance of not less than 10 a crosslinking component including sulfur, a peroxide crosslinking agent and a sulfenamide accelerating agent for crosslinking the rubber component.