Synztec Co., Ltd.

Miyuki Ueno

Shuji Abe

Shuhei Noda

Masahiro Omori

A cleaning blade member includes a cleaning layer and an elastic layer provided on the cleaning layer's back surface. Both are formed of a polyurethane member produced through curing and molding a castable polyurethane composition, the cleaning layer containing a long-chain polyol, a polyisocyanate, and a diamino compound having a melting point&#x2266;80&#xb0; C., the elastic layer containing a long-chain polyol, a polyisocyanate, a short-chain diol, and a short-chain triol, and has a percent edge drooping&#x2266;7.0%, the cleaning and elastic layers have Young's modulus contribution factors Rand R, respectively. (R/R)=0.05-6.0. R=[TE/(T+T)]. R=[TE/(T+T)]. Eand Eare Young's modulus of the cleaning and elastic layers, respectively. Tand Trepresent the thicknesses of the cleaning and elastic layers, respectively, and the overall Young's modulus of the cleaning layer and elastic layer is (R+R)=5.0-14.0 MPa.

Cleaning blade for removing toner

A cleaning blade member for use in a cleaning section for removing toner on a toner-deposited body, the cleaning blade member comprising: an edge layer contacting the toner-deposited body; and a back layer provided on a back side of the edge layer, and wherein the edge layer has a Young's modulus of 8 to 20 MPa and an impact resilience at 25&#xb0; C. of 20 to 40%, and when the Young's modulus of the edge layer is designated as E, a Young's modulus of the back layer is designated as E, a thickness of the edge layer is designated as T, and a thickness of the back layer is designated as T, a ratio (R/R) between a contribution rate Rof the Young's modulus of the edge layer represented by the following equation (1), and a contribution rate Rof the Young's modulus of the back layer represented by the following equation (2) is 0.01 to 6.0, and a total Young's modulus (R+R) of the edge layer and the back layer is 7 to 14 MPa:/()]&#x2003;&#x2003;(1)/()].&#x2003;&#x2003;(2)

Cleaning blade member

The invention provides a cleaning blade member having a controlled friction coefficient and a method for producing the same. The cleaning blade member, for use in a cleaning part for removing toner deposits, is formed of a polyurethane having a ratio of rebound resilience at 25&#xb0; C. to Young's modulus (rebound resilience at 25&#xb0; C./Young's modulus) of 4.5 or less.

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Yokohama, Japan

Miyuki Ueno