Electrically conductive roller

摘要

An electrically conductive roller which may easily obtain a desired surface roughness, and which has good setting property without problems such as high cost and compression set is provided.;An electrically conductive roller 10 comprises a shaft 1, an elastic layer 2 supported on the periphery of the shaft and one surface layer 3 formed on the peripheral surface of the elastic layer 2. The elastic layer 2 is composed of a urethane foam in which the degree of swelling is not more than 120% with respect to the solvent used in the formation of the surface layer 3. The urethane foam preferably contains, as a polyol component, a polyester polyol having a hydroxyl value of 200 to 400 and 3 or more functional groups.

主权项

1. An electrically conductive roller comprising a shaft, an elastic layer supported on a periphery of the shaft and one surface layer formed on a peripheral surface of the elastic layer, wherein
the elastic layer is composed of a urethane foam whose degree of swelling with respect to a solvent used for the formation of the surface layer is less than 120%, and the urethane foam contains, as a polyol component, a polyester polyol having a hydroxyl value of 200 to 400 and 3 or more functional groups.