Nok Corporation

Synztec Co., Ltd.

Miyuki Abe

Katsumi Abe

Natsumi Kimura

Kenji Sasaki

Toshihiro Higashira

Syo Kawabata

A cleaning blade () having an elastic body () molded from a rubber base material, and having at least a surface treatment layer () on the area of the elastic body () that is brought into contact with a body to be contacted, wherein the surface treatment layer () is formed by impregnating the surface layer portion of the elastic body () with a surface treatment liquid containing an isocyanate compound and an organic solvent and hardening the liquid. The elasticity modulus of the surface treatment layer () is 40 MPa or less, the elasticity modulus of the elastic body () is 3-20 MPa, and the difference between the elasticity modulus of the surface treatment layer () and the elasticity modulus of the elastic body () is 1 MPa or more.

Cleaning blade

In a cleaning bladehaving an elastic body, which is a molded article of a rubber material, the elastic bodyhaving at least a surface-treated layerformed at least on an abutting part with an object of contact, the surface-treated layeris formed by impregnating the elastic bodywith a surface treatment liquid which contains a bi-functional isocyanate compound, a tri-functional polyol, and an organic solvent, or with a surface treatment liquid which contains an organic solvent and an isocyanate-group-containing compound having an isocyanate group yielded through reaction between the bi-functional isocyanate compound and the tri-functional polyol, followed by curing; the ratio between an isocyanate group contained in the bi-functional isocyanate compound and a hydroxyl group contained in the tri-functional polyol (NCO group/OH group) is 1.0 to 1.5; and the surface-treated layer has a thickness of 10 &#x3bc;m to 100 &#x3bc;m.

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Kanagawa, Japan

Miyuki Abe