Patent ID: 6908419
Filing Date: 2005-06-21
Classification: G03G

Abstract:
1. An electrically conductive roll including a center shaft, an electrically conductive elastic layer formed on an outer circumferential surface of said center shaft, and a resistance adjusting layer formed radially outwardly of said electrically conductive elastic layer, wherein the improvement comprises: said resistance adjusting layer being formed of a rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds, at least one electron-conductive agent, at least one ion-conductive agent, and at least one electrically insulating filler, said thermoplastic resin, said at least one electron-conductive agent, said at least one ion-conductive agent, and said at least one electrically insulating filler being included in said rubber composition in respective amounts of 3-40 parts by weight, 10-150 parts by weight, not greater than 2 parts by weight, and 20-80 parts by weight, per 100 parts by weight of said rubber material.