Abstract: A method of producing a conductive silicone rubber particulate is disclosed in which the particulate is from 0.1 to 100 micrometers average diameter and is coated on the surface with carbon black. The method prepares an aqueous dispersion of silicone rubber composition particulate, carbon black, surfactant, and water, then removes the water.

Abstract: The electroconductive silicon rubber particulate of the present invention is an electroconductive silicone rubber particulate characterized by the fact that it contains an electroconductive material and that the particle diameter is from 0.1 to 1000 micrometers. It is an electroconductive material having excellent properties of lubrication, and has the characteristic capability, when added to a variety of materials such as various organic resins and rubbers including silicone rubber, of contributing to these materials stable levels of conductivity ranging from the semiconductive range to the conductive range, for the prevention of electrostatic and electrical charge build-up.

Abstract: Because the present invention produces a toner-fixing roll by forming, directly or indirectly, a layer of thermal stabilizer-containing cured silicone rubber on the circumferential surface of a core and by then heating the cured silicone rubber layer at 270.degree. C. to 400.degree. C. for 15 minutes to 24 hours, said toner-fixing roll has excellent releasability with regard to fused toner without the use of silicone oil. Due to this, the silicone rubber-coated roll produced by the method of the present invention is appropriately employed as a toner-fixing roll in dry electrophotographic devices, that is, it is suitable for the heat-fixing roll or pressure roll and particularly for the heat-fixing roll.