JP2009157136A5 - - Google Patents

Claims (6)

A metal shaft, a conductive rubber layer formed on the outer periphery of the shaft, and a conductive silicon rubber film formed on the outer periphery of the conductive rubber layer and having a smooth outer peripheral surface ;
The conductive rubber layer is composed of a double structure of a urethane sponge and a conductive silicone rubber film covering a partition wall of the urethane sponge ,
The conductive silicone rubber coating formed on the outer periphery of the conductive rubber layer and the conductive silicone rubber coating covering the urethane sponge partition vulcanize the conductive liquid silicon impregnated in the urethane sponge in the mold. The conductive rubber roller is formed at the same time . A metal shaft; a conductive rubber layer formed on an outer periphery of the shaft; a conductive silicon rubber film formed on an outer periphery of the conductive rubber layer and having a smooth outer peripheral surface; and the conductive silicon rubber film A conductive surface resin layer formed on
The conductive rubber layer is composed of a double structure of a urethane sponge and a conductive silicone rubber film covering a partition wall of the urethane sponge ,
The conductive silicone rubber coating formed on the outer periphery of the conductive rubber layer and the conductive silicone rubber coating covering the urethane sponge partition vulcanize the conductive liquid silicon impregnated in the urethane sponge in the mold. The conductive rubber roller is formed at the same time . The conductive rubber roller according to claim 1, wherein a conductive fluororesin tube is attached to an outer periphery of the conductive silicon rubber film having the smooth outer peripheral surface . 4. The conductive rubber roller according to claim 1, wherein the conductive rubber roller is a developing roller for developing an electrostatic latent image formed on the photosensitive drum, and a toner image formed on the photosensitive drum is recorded on the recording paper. A conductive rubber roller characterized by being used as a transfer roller for transferring to the surface, a charging roller for charging the photosensitive drum surface to a predetermined potential, a pressure roller for a fixing device, or a conductive driving roller. In producing a conductive rubber roller having a metal shaft and a conductive rubber layer formed on the outer periphery thereof and having a smooth outer peripheral surface ,
Producing a urethane rubber roller having a foamed urethane sponge attached to the outer peripheral surface of a metal shaft ;
Impregnating the inside of the urethane sponge from the outer peripheral surface side of the urethane rubber roller with conductive liquid silicon;
Mounting a urethane rubber roller impregnated with liquid silicon in a cylindrical mold;
Rotating the urethane rubber roller around a roller axis to move the impregnated liquid silicon to the outer peripheral surface side; and
Performing a vulcanization process in a state where the liquid silicon is moved to the outer peripheral surface side, and converting the urethane rubber roller into a conductive rubber roller having a conductive outer peripheral surface and a smooth outer peripheral surface. A method for producing a conductive rubber roller, comprising: 6. The method for producing a conductive rubber roller according to claim 5, comprising a step of coating a conductive resin layer or mounting a conductive tube on the conductive silicon rubber film after the vulcanization treatment. A method for producing a rubber roller, characterized in that: