| Patent Number |
Title Of Patent |
Date Issued |
| 7603067 |
Rubber member and developing roller composed of rubber member |
October 13, 2009 |
| A developing roller composed of a rubber member including not less than two vulcanized rubber layers including a surface layer and a base layer. A hardness of the surface layer is set higher than that of the base layer. The hardness of the base layer is set to not more than 60 degrees |
| 7555253 |
Semiconductive rubber member and developing roller composed of semiconductive rubber member |
June 30, 2009 |
| A developing roller including a semiconductive rubber member having not less than two vulcanized layers including a base layer composed of a vulcanized electro-conductive rubber composition and a surface layer composed of a vulcanized rubber composition. An electric resistance value |
| 7406277 |
Semiconductive rubber member |
July 29, 2008 |
| A conductive rubber roller 10 has a conductive rubber layer 1, containing chloroprene rubber, and composes an outermost layer thereof. When an alternating current is applied to the conductive rubber roller 10 at a voltage of five and a frequency of 100 Hertz, the dielectric loss tangent |
| 7356293 |
Toner transport roller |
April 8, 2008 |
| A toner transport roller (10) including a sealing member (3), for preventing leak of toner, which contacts a peripheral surface of a rubber roller (1) thereof slidably. The toner transport roller (10) contains 3 to 50 parts by mass of alumina for 100 parts by mass of an ionic-conduct |
| 7220796 |
Conductive elastomer composition, conductive member using conductive elastomer composition, imag |
May 22, 2007 |
| A conductive elastomer composition includes an ionic-conductive elastomer component, which contains an anion-containing salt having a fluoro group (F--) and a sulfonyl group (--SO.sub.2--). The conductive elastomer composition has a volume charge not more than 10.sup.8.5 (.OMEGA.cm) when |
| 7149466 |
Conductive rubber member |
December 12, 2006 |
| A conductive rubber member having a rubber layer, disposed in an outermost layer thereof, formed by using a rubber composition containing an ionic-conductive rubber, the rubber composition further containing a dielectric loss tangent-adjusting filler. The conductive rubber member has |
| 7098264 |
Conductive elastomer composition, conductive member using conductive elastomer composition, imag |
August 29, 2006 |
| A conductive elastomer composition includes an ionic-conductive elastomer component, which contains an anion-containing salt having a fluoro group (F--) and a sulfonyl group (--SO.sub.2--). The conductive elastomer composition has a volume charge not more than 10.sup.8.5 (.OMEGA.cm) when |
| 7070552 |
Electroconductive rubber roller |
July 4, 2006 |
| An electroconductive rubber roller (10) whose outermost layer consists of a rubber layer (1) made of a rubber composition containing an ionic-conductive rubber as a main component thereof. The surface of the rubber layer consists of an oxide film; and the rubber composition contains |
