Electrically conductive rubber composition, transfer roller, and image forming apparatus
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKeisuke Osaka, Yusuke Tanio
Life of this patent
Estimating the term…
Abstract
An inventive electrically conductive rubber composition contains: a rubber component including SBR and/or NBR, and 20 to 30 parts by mass of epichlorohydrin rubber based on 100 parts by mass of the overall rubber component; a crosslinking component; a foaming component; and a potassium salt of an anion having a fluoro group and a sulfonyl group in its molecule, the potassium salt being present in a proportion of not less than 0.01 part by mass and not greater than 1 part by mass based on 100 parts by mass of the overall rubber component. An inventive transfer roller (1) includes a roller body (2) formed from the electrically conductive rubber composition.
Claims10
An electrically conductive rubber composition for a transfer roller comprising:
- a rubber component;
- a crosslinking component for crosslinking the rubber component;
- a foaming component for foaming the rubber component;
- and
- a potassium salt of an anion having a fluoro group and a sulfonyl group in its molecule;
- wherein the rubber component includes epichlorohydrin rubber and at least one selected from the group consisting of styrene butadiene rubber and acrylonitrile butadiene rubber;
- wherein the epichlorohydrin rubber is present in a proportion of not less than 20 parts by mass and not greater than 30 parts by mass based on 100 parts by mass of the overall rubber component;
- wherein the potassium salt is potassium bis(trifluoromethanesulfonyl)imide;
- wherein the potassium salt is present in a proportion of not less than 0.01 part by mass and not greater than 1 part by mass based on 100 parts by mass of the overall rubber component.
Dependencies are inferred from the claim text.