Charging roll for electrophotographic apparatus
AssigneeSumitomo Riko Company Limited
InventorsJunichiro Suenaga, Shinkichi Kashihara, Akitoshi Morita, Takeru Horiuchi
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Abstract
A charging roll for an electrophotographic apparatus includes a shaft body and an elastic body layer formed on an outer circumferential surface of the shaft body. The elastic body layer contains (a) to (c) below: (a) a hydrin rubber with a chlorine content of 14% or more and 19% or less; (b) an ionic conductive agent; and (c) a salt of a cyclic amidine compound. The hydrin rubber includes a crosslinking agent which is a sulfur crosslinking agent or a peroxide crosslinking agent.
Claims6
A charging roll for an electrophotographic apparatus comprising a shaft body and an elastic body layer formed on an outer circumferential surface of the shaft body, wherein
- the elastic body layer contains (a) to (c) below:
- (a) a hydrin rubber with a chlorine content of 14% or more and 19% or less;
- (b) an ionic conductive agent;
- and
- (c) a salt of a cyclic amidine compound, and
- the hydrin rubber comprises a crosslinking agent which is a sulfur crosslinking agent or a peroxide crosslinking agent,
- wherein the (c) is included in a content of 0.1 parts by mass or more and 5.0 parts by mass or less with respect to 100 parts by mass of the (a).
A charging roll for an electrophotographic apparatus comprising a shaft body and an elastic body layer formed on an outer circumferential surface of the shaft body, wherein the elastic body layer contains (a) to (c) below:
- (a) a hydrin rubber with a chlorine content of 14% or more and 19% or less;
- (b) an ionic conductive agent;
- and
- (c) a salt of a cyclic amidine compound, and
- the hydrin rubber comprises a crosslinking agent which is a sulfur crosslinking agent or a peroxide crosslinking agent,
- wherein the (b) is included in a content of 0.5 parts by mass or more and 3.0 parts by mass or less with respect to 100 parts by mass of the (a).
Dependencies are inferred from the claim text.