| abstract |
In a rubber roll having a structure in which a rubber layer is formed on the surface of a roll-shaped substrate, the rubber layer is obtained by copolymerizing 28 to 70 mol% of alkylene oxide and 2 to 15 mol% of ethylenically unsaturated epoxide. It is a layer which consists of a vulcanized material of the rubber composition containing -95 weight% and 5 to 75 weight% of unsaturated rubbers (B), It has no photoconductor contamination, it has stable low electrical resistance, and the environmental dependency of electrical resistance is small A low hardness rubber roll is provided. Moreover, the image forming apparatus equipped with this rubber roll as a developing roll or a charging roll, and the rubber composition for a detection are provided. |