Patents by Inventor Miyuki Ueno
Miyuki Ueno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7805103Abstract: 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?80° 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?7.0%, the cleaning and elastic layers have Young's modulus contribution factors Ra and Rb, respectively. (Rb/Ra)=0.05-6.0. Ra=[TaEa/(Ta+Tb)]. Rb=[TbEb/(Ta+Tb)]. Ea and Eb are Young's modulus of the cleaning and elastic layers, respectively. Ta and Tb represent the thicknesses of the cleaning and elastic layers, respectively, and the overall Young's modulus of the cleaning layer and elastic layer is (Ra+Rb)=5.0-14.0 MPa.Type: GrantFiled: June 26, 2008Date of Patent: September 28, 2010Assignee: Synztec Co., Ltd.Inventors: Miyuki Ueno, Shuji Abe, Shuhei Noda
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Publication number: 20100031466Abstract: The blade member is formed of a polyurethane member produced through curing and molding a castable polyurethane composition containing at least a polyol, an isocyanate compound, and a cross-linking agent. The polyurethane member exhibits a storage modulus (1 Hz) as measured at 40° C. of 2.0×107 Pa or higher and a (G?10)/(G?50) of 3 or lower, wherein represents a storage modulus (1 Hz) as measured at 10° C. (Pa) and G?50 represents a storage modulus (1 Hz) as measured at 50° C. (Pa).Type: ApplicationFiled: January 2, 2009Publication date: February 11, 2010Applicant: SYNZTEC CO., LTD.Inventors: Shuji ABE, Miyuki Ueno
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Publication number: 20090003905Abstract: 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 ?80° 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 ?7.0%, the cleaning and elastic layers have Young's modulus contribution factors Ra and Rb, respectively. (Rb/Ra)=0.05-6.0. Ra=[TaEa/(Ta+Tb)]. Rb=[TbEb/(Ta+Tb)]. Ea and Eb are Young's modulus of the cleaning and elastic layers, respectively. Ta and Tb represent the thicknesses of the cleaning and elastic layers, respectively, and the overall Young's modulus of the cleaning layer and elastic layer is (Ra+Rb)=5.0-14.0 MPa.Type: ApplicationFiled: June 26, 2008Publication date: January 1, 2009Applicant: SYNZTEC CO., LTD.Inventors: Miyuki Ueno, Shuji Abe, Shuhei Noda
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Patent number: 7418231Abstract: 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° C. of 20 to 40%, and when the Young's modulus of the edge layer is designated as Ea, a Young's modulus of the back layer is designated as Eb, a thickness of the edge layer is designated as Ta, and a thickness of the back layer is designated as Tb, a ratio (Rb/Ra) between a contribution rate Ra of the Young's modulus of the edge layer represented by the following equation (1), and a contribution rate Rb of 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 (Ra+Rb) of the edge layer and the back layer is 7 to 14 MPa: Ra=[TaEa/(Ta+Tb)]??(1) Rb=[TbEb/(Ta+Tb)].Type: GrantFiled: December 15, 2006Date of Patent: August 26, 2008Assignee: Synztec Co., Ltd.Inventors: Miyuki Ueno, Shuji Abe
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Patent number: 7386267Abstract: 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° C. to Young's modulus (rebound resilience at 25° C./Young's modulus) of 4.5 or less.Type: GrantFiled: December 21, 2005Date of Patent: June 10, 2008Assignee: Synztec Co., Ltd.Inventors: Shuji Abe, Masahiro Omori, Miyuki Ueno
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Publication number: 20080027184Abstract: The present invention provides a cleaning blade member which can be excellently produced by molding and which exhibits small variation in physical properties with temperature, and excellent wear resistance. The cleaning blade member formed of a castable polyurethane member produced through hardening and molding a polyurethane composition containing at least a polyol, a polyisocyanate, and a diamino compound, wherein the diamino compound has a melting point of 80° C. or lower, the polyisocyanate is a blend of 4,4?-diphenylmethane diisocyanate (MDI) and 3,3-dimethylphenyl-4,4-diisocyanate (TODI), and the ratio of TODI in the entirety of polyisocyanate is 30 to 100% by weight.Type: ApplicationFiled: July 26, 2007Publication date: January 31, 2008Applicant: SYNZTEC CO., LTD.Inventors: Miyuki UENO, Shuji ABE, Shuhei NODA
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Publication number: 20070140762Abstract: 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° C. of 20 to 40%, and when the Young's modulus of the edge layer is designated as Ea, a Young's modulus of the back layer is designated as Eb, a thickness of the edge layer is designated as Ta, and a thickness of the back layer is designated as Tb, a ratio (Rb/Ra) between a contribution rate Ra of the Young's modulus of the edge layer represented by the following equation (1), and a contribution rate Rb of the Young's modulus of the back layer represented by the following equation (2) is 0.01 to 6.Type: ApplicationFiled: December 15, 2006Publication date: June 21, 2007Inventors: Miyuki Ueno, Shuji Abe
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Publication number: 20070031753Abstract: The invention provides an electrophotography polyurethane member which exhibits small temperature dependency of characteristics, excellent mechanical characteristics, and high wear resistance. The cast-type electrophotography polyurethane member produced through hardening and molding a polyurethane composition containing at least polyol, polyisocyanate, and a diamino compound, wherein the diamino compound has a melting point of 80° C. or lower and contains no chlorine atom but contains an aromatic ring in the molecular structure thereof and exhibits a reaction rate slower than that of 2,2?,3,3?-tetrachloro-4,4?-diaminodiphenylmethane under given hardening and molding conditions.Type: ApplicationFiled: August 3, 2006Publication date: February 8, 2007Inventors: Shuji Abe, Miyuki Ueno, Shuhei Noda
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Publication number: 20060140692Abstract: 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° C. to Young's modulus (rebound resilience at 25° C./Young's modulus) of 4.5 or less.Type: ApplicationFiled: December 21, 2005Publication date: June 29, 2006Inventors: Shuji Abe, Masahiro Omori, Miyuki Ueno