Patent application number | Description | Published |
20110306481 | RUBBER COMPOSITION AND PAPER FEED ROLLER - The rubber composition according to the present invention is a rubber composition for forming the body of a paper feed roller, containing a rubber component, a crosslinking agent and a filler, wherein the rubber component is at least a single type selected from a group consisting of: (1) non-oil-extended ethylene propylene diene rubber having Mooney viscosity (at 100° C.) of 15 to 50; (2) a mixture of non-oil-extended ethylene propylene diene rubber having Mooney viscosity (at 100° C.) of 15 to 50 and oil of not more than 10 parts by mass with respect to 100 parts by mass of the non-oil-extended ethylene propylene diene rubber; (3) a mixture of non-oil-extended ethylene propylene diene rubber having Mooney viscosity (at 100° C.) of 15 to 50 and liquid ethylene propylene diene rubber; and (4) a mixture of non-oil-extended ethylene propylene diene rubber having Mooney viscosity (at 100° C.) of 15 to 50 and polybutene, and the content of the filler is less than | 12-15-2011 |
20120129667 | TRANSFER MEMBER - The transfer member according to the present invention is a transfer member employed for transferring toner in an image forming apparatus utilizing electrophotography, made of a rubber composition at least containing styrene-butadiene rubber, ethylene-propylene-diene rubber and epichlorohydrin rubber as rubber components. | 05-24-2012 |
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 |
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 |