| 摘要 |
PURPOSE: To provide an electric conductive rubber roller of which electric conductivity is sufficiently high even in the case of small combining quantity of electric conductive filler, and hardness of the roller is low. CONSTITUTION: This electric conductive rubber roller contains at least two sorts of rubber having different SP-values and electric conductive filler, the ratio of SP-values of the two sorts of rubber is over 1.15, and the rubber of the large SP-value is combined with the rubber of the small SP-value in the weight ratio 80:20-50:50. |
