Patent application number | Description | Published |
20110142503 | CONDUCTIVE ROLLER AND ELECTROPHOTOGRAPHIC APPARATUS EMPLOYING THE SAME - The conductive roller according to the present invention includes a roller body made of a thermoplastic elastomer composition supplied with conductivity having an outer cylinder constituting an outer peripheral surface of the roller body, an inner cylinder, having an outer diameter smaller than the inner diameter of the outer cylinder, concentrically arranged in the outer cylinder, and a plurality of platelike coupling portions reaching the inner periphery of the outer cylinder from the outer periphery of the inner cylinder, wherein a plurality hollow portions separated from one another by the coupling portions are provided between the outer periphery of the inner cylinder and the inner periphery of the outer cylinder, and each coupling portion is arranged to intersect with a plane passing through the central axes of the outer cylinder and the inner cylinder so that adjacent hollow portions separated from each other by the coupling portion overlap with each other on the plane inwardly and outwardly in the radial direction in a section of the roller body in a direction orthogonal to the axial direction. | 06-16-2011 |
20130203573 | ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, AND TRANSFER ROLLER PRODUCED BY USING THE COMPOSITION - An inventive electrically conductive rubber composition comprises a rubber component at least including an SBR, an EPDM and an epichlorohydrin rubber, a crosslinking agent component for crosslinking the rubber component, and a foaming agent component. The foaming agent component comprises a foaming agent alone in a proportion of not less than 0.1 part by mass and not greater than 8 parts by mass based on 100 parts by mass of the rubber component. Alternatively, the foaming agent component comprises the aforementioned proportion of the foaming agent and not greater than 5 parts by mass of a urea foaming assisting agent based on 100 parts by mass of the rubber component. An inventive transfer roller ( | 08-08-2013 |
20140162861 | RUBBER FOAM TUBE PRODUCTION METHOD, ELECTRICALLY CONDUCTIVE ROLLER, AND IMAGE FORMING APPARATUS - A rubber foam tube ( | 06-12-2014 |
20140287900 | ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, TRANSFER ROLLER, AND IMAGE FORMING APPARATUS - The present invention provides an electrically conductive rubber composition which can be efficiently and sufficiently foamed and crosslinked by means of a continuous crosslinking apparatus including a microwave crosslinking device and a hot air crosslinking device without generation of ammonia and carbon monoxide. The electrically conductive rubber composition comprises a rubber component, a crosslinking component for crosslinking the rubber component, and a foaming component including sodium hydrogen carbonate and citric acid. | 09-25-2014 |
20150034877 | ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, TRANSFER ROLLER, AND IMAGE FORMING APPARATUS - An electrically conductive rubber composition is provided, which comprises a rubber component including an SBR, an EPDM and an epichlorohydrin rubber, a crosslinking component and an azodicarbonamide foaming agent having an average particle diameter of 3 to 11 μm. The azodicarbonamide foaming agent is blended in a proportion of 0.5 to 8 parts by mass based on 100 parts by mass of the overall rubber component. A transfer roller ( | 02-05-2015 |
20150041725 | ELECTRICALLY CONDUCTIVE RUBBER COMPOSITION, TRANSFER ROLLER, AND IMAGE FORMING APPARATUS - An electrically conductive rubber composition is provided, which comprises a rubber component including an SBR, an EPDM and an epichlorohydrin rubber, a crosslinking component and an azodicarbonamide foaming agent having a volume-based median diameter of 20 to 40 μm. The azodicarbonamide foaming agent is blended in a proportion of 0.5 to 8 parts by mass based on 100 parts by mass of the overall rubber component. A transfer roller ( | 02-12-2015 |
20150277274 | TONER SUPPLY ROLLER AND IMAGE FORMING APPARATUS - A toner supply roller ( | 10-01-2015 |
20150277275 | TONER SUPPLY ROLLER AND IMAGE FORMING APPARATUS - A toner supply roller ( | 10-01-2015 |
20150277276 | TONER SUPPLY ROLLER AND IMAGE FORMING APPARATUS - A toner supply roller ( | 10-01-2015 |