Silicone rubber roller for electrophotography and method of prod

Details Silicone rubber roller for electrophotography and method of prod Silicone rubber roller for electrophotography and method of prod

1992-11-12

1995-08-22

Ryan, Patrick J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 368, 428 369, 428323, 428447, 492 56, 492 59, 355219, 430 48, 524588, B32B 108

Patent

active

054438730

ABSTRACT:
There is disclosed an electrically conductive rubber roller for electrophotography which changes very little in electric resistance with changes in environment. This roller is used for charging and image transferring processes in copying machines and laser beam printers. The roller comprises a porous body of crosslinking silicone composition, containing at least a silica type filler, carbon black a foaming agent and siloxane polymer; the composition has an electric resistance of 10.sup.3 -10.sup.8.

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Patent Abstracts of Japan, vol. 10, No. 190 (P-474), Jul. 4, 1986 & JP-A-61 036 777 (Ricoh) Feb. 21, 1986.

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