Nok Corporation

Synztec Co., Ltd.

Hiroaki Kaneda

Atsushi Ikeda

Takeshi Yamada

Shuji Abe

Kenji Sasaki

Natsumi Kimura

Yasushi Sugiyama

Tomohiro Kondo

Hidetomo Mukai

Syo Kawabata

Goki Inukai

Katsuya Shimotsuma

Koji Nishiguchi

A developing roller having a rubber elastomer layer on the outer periphery of a shaft core metal, having a coating layer formed from a binder (A) and silicone rubber particles (B) on the surface of the rubber elastomer, and having an electrostatic capacitance of 4 to 20 nF; wherein the binder (A) is formed from a diluting solvent solution of a terminal hydroxyl group-containing prepolymer (a) obtained by reaction of an isocyanate compound, an isocyanurate modified product thereof and a reactive silicone oil, and an isocyanate compound and/or an isocyanurate modified product thereof (b). This developing roller suppresses banding by suppressing electrostatic capacitance even if the nip width between the developing roll and the photoreceptor changes due to distortion of peripheral members in the development apparatus, and stick slip (vibration) of gears.

Developing roller

A cleaning bladeincludes an elastic bodythat is a molded body of a rubber base material, and which has at least a surface treatment layerin a portion of the elastic body, the portion coming into contact with an object to be contacted. The surface treatment layeris formed by impregnating a surface portion of the elastic bodywith a surface treatment liquid, which contains an isocyanate compound and an organic solvent, and curing the surface treatment liquid; the surface treatment layerhas an elastic modulus of 95 MPa or less; the elastic bodyhas an elastic modulus of from 20 MPa to 60 MPa (inclusive); and the difference between the elastic modulus of the surface treatment layerand the elastic modulus of the elastic bodyis 1 MPa or more.

Cleaning blade

A hermetically sealing device includes a conductive seal member () which is integrated with a conductive member () extending into a casing () and seals a space between the conductive member () and an inserting section for the conductive member () on the casing (). In the conductive member (), an electromagnetic wave shield layer () is laminated on a cover film which protects the surface of a base film having a circuit pattern, an insulating layer () is laminated on the electromagnetic wave shield layer (), the insulating layer () has an opening section () such that a part of the flat section of the electromagnetic wave shield layer () is exposed, and the seal member () is integrated with the conductive member () to cover the opening section () and is brought into contact with the electromagnetic wave shield layer () through the opening section ().

Hermetic sealing device and hermetic sealing structure

Growing community of inventors

Kanagawa, Japan

Hiroaki Kaneda