Abstract: A blade member 1 is used for removal of residual toner 5 remaining on a surface of a counterpart member 4 in an image forming device employing an electrophotographic system, by sliding contact with the counterpart member 4. The blade member 1 includes a blade body 11 made of a polyurethane rubber using diphenylmethane diisocyanate and a polyester polyol as main raw materials, and a film 12 that covers at least a surface of a sliding contact portion of the blade body 11 to contact with the counterpart member 4. The polyurethane rubber has an international rubber hardness degree of 65 to 85 IRHD, a tan ? peak temperature of 8° C. or lower, and a tan ? peak value of 1.1 or less. The film 12 contains a hydrocarbon polymer as a main component.

Abstract: A blade member 1 is used for removal of residual toner 5 remaining on a surface of a counterpart member 4 in an image forming device employing an electrophotographic system, by sliding contact with the counterpart member 4. The blade member 1 includes a blade body 11 made of a polyurethane rubber using diphenylmethane diisocyanate and a polyester polyol as main raw materials, and a film 12 that covers at least a surface of a sliding contact portion of the blade body 11 to contact with the counterpart member 4. The polyurethane rubber has an international rubber hardness degree of 65 to 85 IRHD, a tan ? peak temperature of 8° C. or lower, and a tan ? peak value of 1.1 or less. The film 12 contains a hydrocarbon polymer as a main component.

Abstract: A development roll for electrophotographic equipment includes a shaft body and a rubber elastic layer disposed on the outer circumference of the shaft body. The rubber elastic layer is composed of a crosslinked body of a composition containing a liquid or millable silicone rubber, a crosslinking agent, an electronically conductive agent, and an ionic liquid. The composition contains the ionic liquid in the amount in the range of 0.1 to 5.1 parts by mass relative to 100 parts by mass of the total amount of the liquid or millable silicone rubber and the crosslinking agent.