Abstract: Provided is a conductive foam roll having a high surface opening ratio that achieves both cleaning performance and low resistance. A conductive foam roll 10 includes a shaft body 12 and a conductive foam layer 14 around the shaft body 12, wherein the conductive foam layer 14 has a surface opening ratio of 50% to 90%, and wherein the conductive foam layer 14 contains an ionic conductive agent that contains salt of diallyl-type ammonium cations, and at least one selected from the group consisting of N,N-bis(trifluoromethanesulfonyl)imide anions, and N,N-bis(fluorosulfonyl)imide anions.

Abstract: Provided is a conductive foam roll having a high surface opening ratio that achieves both cleaning performance and low resistance. A conductive foam roll 10 includes a shaft body 12 and a conductive foam layer 14 around the shaft body 12, wherein the conductive foam layer 14 has a surface opening ratio of 50% to 90%, and wherein the conductive foam layer 14 contains an ionic conductive agent that contains salt of diallyl-type ammonium cations, and at least one selected from the group consisting of N,N-bis(trifluoromethanesulfonyl)imide anions, and N,N-bis(fluorosulfonyl)imide anions.

Abstract: Provided is a conductive composition for use in an electrophotographic apparatus and a conductive roll for use in an electrophotographic apparatus in which resistance reduction can be achieved even when an ion conductive agent is used. A conductive roll 1 includes a shaft 2, and a base layer 3, a surface layer 4, and an intermediate layer 5 that are formed around the shaft 2 and at least one of which contains a conductive composition containing a polar polymer and a conductivity imparting agent that is quaternary ammonium salt represented by the following formula 1: wherein R1 to R3 represent C1 to C14 alkyl groups, R4 represents one of a methacrylate group and an acrylate group, an anion represented by X? is any one of bistrifluoromethanesulfonimide, triflate, and fluorosulfonylimide, and A represents an alkylene group.

Abstract: A semi-conductive roll is provided including a shaft, a low-hardness base layer formed on an outer circumferential surface of the shaft, and a coating layer formed by coating the low-hardness base layer radially outwardly. The coating layer includes one of a rubber material and an elastomer material that is crosslinked by at least one resin crosslinking agent.

Abstract: A semi-conductive roll including a shaft, a low-hardness base layer formed on an outer circumferential surface of the shaft, and a coating layer formed by coating radially outwardly of the low-hardness base layer, wherein the coating layer is formed such that a rubber material or an elastomer material is crosslinked by at least one resin crosslinking agent.