Nikaido Marmelstein Murray & Oram, LLP.
Silicone rubber roller for electrophotography and method of producing the same
 An electrically conductive rubber roller for electrophotography which does not exhibit touch memory or bleed out of remnant siloxanes, even after 18 days of storage without use, and, in a preferred form, exhibits little change in electric resistance with changes in environment. This roller is made by making a rubber molding material composition containing a raw polysiloxane rubber which does not contain more than 5,000 ppm of low molecular weight polysiloxanes, cyclic siloxanes and non-functional silicone oils (remnant siloxanes); molding this composition into a roller; at least primarily crosslinking the rubber in the roller; and then subjecting the crosslinked rubber roller to heating under a vacuum. 
Sumitomo Rubber Industries Ltd.
C G G
C08G G03G G03G
inventional inventional inventional
Hitoshi Hirotoshi Yuji
Itani Murakami Yamasaki