Patents by Inventor Kohsuke Suzuki
Kohsuke Suzuki 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: 11914750Abstract: An information management device includes: an obtainer that obtains first company information and personal information from a first company, the first company information relating to a first product or service of the first company, the personal information relating to a user who has purchased the first product or who has been provided with the service; a company information storage that stores the first company information obtained; a personal information storage that stores the personal information obtained; an integrator that integrates the company information and the personal information based on a purchase record or a use record to generate integrated information, the purchase record indicating that the user has purchased the first product, the use record indicating that the user has used the service; and a manager that manages an output of the integrated information based on restriction information for restricting an output destination of the integrated information.Type: GrantFiled: November 8, 2019Date of Patent: February 27, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Masayuki Kozuka, Kohsuke Yamamoto, Tomoki Ogawa, Masaya Yamamoto, Junya Suzuki, Hiroki Urabe
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Patent number: 7381513Abstract: A carrier containing a core material and a resin coating layer located overlying the surface of the core material. The resin coating layer contains resin and electroconductive particles having an oil absorption amount of from 10 to 300 ml/100 g. The electroconductive particle contains a base material particle and an electroconductive coating layer located overlying the surface of the base material particle. The electroconductive coating layer contains an underlayer containing tin dioxide and an upper layer containing indium oxide and tin dioxide, located overlying the underlayer.Type: GrantFiled: July 27, 2005Date of Patent: June 3, 2008Assignee: Ricoh Company, Ltd.Inventors: Kohsuke Suzuki, Tomio Kondoh, Shinichiro Yagi, Hitoshi Iwatsuki
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Patent number: 7344812Abstract: A developer for developing an electrostatic latent image, including a carrier which includes core particles, and a surface layer surrounding each of the core particles and containing an acrylic resin binder; and a toner which includes toner particles and an external additive of inorganic or organic fine particles present on each of the toner particles. Each of the toner particles comprises a colorant, a matrix of a first resin, and a plurality of domains of a second resin dispersed in the matrix and containing a wax. The first resin is substantially free of tetrahydrofuran insoluble matters and has a weight average molecular weight of 3,000 to 90,000.Type: GrantFiled: March 20, 2003Date of Patent: March 18, 2008Assignee: Ricoh Company, Ltd.Inventors: Kohsuke Suzuki, Satoshi Mochizuki, Tomio Kondou, Masahide Yamashita, Tomomi Tamura, Takayuki Koike
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Patent number: 7272347Abstract: A carrier including a magnetic core material and a layer located on a surface of the magnetic core material, wherein the carrier satisfies the following relationships (1) to (3): 0.90?(?a/?b)<1.00 (1); 200?(?b·?c)?400 (2); 10?(?b/?c)?20 (3), wherein ?b represents a magnetization of the carrier at 1,000 Oe, ?a represents a magnetization of the carrier after frictionized with a cylindrical sleeve under a specific condition and ?c represents a true specific gravity of the carrier, wherein the carrier has a weight-average particle diameter of about 25 to about 65 ?m and includes carrier particles having a weight-average particle diameter not greater than about 12 ?m in an amount of not greater than about 0.3% by weight, wherein a ratio between the weight-average particle diameter and a number-average particle diameter of the carrier is about 1 to about 1.3, and wherein an electric resistance is from about 1.0×109 to about 1.Type: GrantFiled: September 28, 2006Date of Patent: September 18, 2007Assignee: Ricoh Company, Ltd.Inventors: Masahide Yamashita, Satoshi Mochizuki, Tomio Kondou, Kohsuke Suzuki
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Patent number: 7226713Abstract: A carrier including a magnetic core material and a layer located on a surface of the magnetic core material, wherein the carrier satisfies the following relationships (1) to (3): 0.90?(?a/?b)<1.00 (1); 200?(?b·?c)?400 (2); 10?(?b/?c)?20 (3), wherein ?b represents a magnetization of the carrier at 1,000 Oe, ?a represents a magnetization of the carrier after frictionized with a cylindrical sleeve under a specific condition and ?c represents a true specific gravity of the carrier, wherein the carrier has a weight-average particle diameter of about 25 to about 65 ?m and includes carrier particles having a weight-average particle diameter not greater than about 12 ?m in an amount of not greater than about 0.3% by weight, wherein a ratio between the weight-average particle diameter and a number-average particle diameter of the carrier is about 1 to about 1.3, and wherein an electric resistance is from about 1.0×109 to about 1.Type: GrantFiled: January 30, 2004Date of Patent: June 5, 2007Assignee: Ricoh Company, Ltd.Inventors: Masahide Yamashita, Satoshi Mochizuki, Tomio Kondou, Kohsuke Suzuki
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Publication number: 20070082286Abstract: A carrier including a magnetic core material and a layer located on a surface of the magnetic core material, wherein the carrier satisfies the following relationships (1) to (3): 0.90?(?a/?b)<1.00 (1); 200?(?b·?c)?400 (2); 10?(?b/?c)?20 (3), wherein ?b represents a magnetization of the carrier at 1,000 Oe, ?a represents a magnetization of the carrier after frictionized with a cylindrical sleeve under a specific condition and ?c represents a true specific gravity of the carrier, wherein the carrier has a weight-average particle diameter of about 25 to about 65 ?m and includes carrier particles having a weight-average particle diameter not greater than about 12 ?m in an amount of not greater than about 0.3% by weight, wherein a ratio between the weight-average particle diameter and a number-average particle diameter of the carrier is about 1 to about 1.3, and wherein an electric resistance is from about 1.0×109 to about 1.Type: ApplicationFiled: September 28, 2006Publication date: April 12, 2007Inventors: Masahide Yamashita, Satoshi Mochizuki, Tomio Kondou, Kohsuke Suzuki
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Patent number: 7172846Abstract: A carrier including a manganese ferrite core material having a layer on its surface such that 0.1?K?30, where K=(S/M)×100, S and M represent the standard deviation and average of M2/(M1+M2), respectively, M ranging from 0.05 to 0.45, and M1 and M2 represent the content of iron and manganese, respectively, in a carrier particle. The carrier has a magnetization ranging from 45 to 75 emu/g at 1,000 Oe, a mass-averaged particle diameter, D4, ranging from 25 to 65 ?m and carrier particles having a particle diameter not greater than 12 ?m are included in an amount not greater than 0.3% by weight, and a ratio, D4/D1, ranging from 1 to 1.3, where D1 is a number-averaged particle diameter of the carrier.Type: GrantFiled: May 13, 2004Date of Patent: February 6, 2007Assignee: Ricoh Company, Ltd.Inventors: Masahide Yamashita, Tomio Kondou, Kohsuke Suzuki
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Publication number: 20060291911Abstract: A carrier including a manganese ferrite core material having a layer on its surface such that 0.1?K?30, where K=(S/M)×100, S and M represent the standard deviation and average of M2/(M1+M2), respectively, M ranging from 0.05 to 0.45, and M1 and M2 represent the content of iron and manganese, respectively, in a carrier particle. The carrier has a magnetization ranging from 45 to 75 emu/g at 1,000 Oe, a mass-averaged particle diameter, D4, ranging from 25 to 65 ?m and carrier particles having a particle diameter not greater than 12 ?m are included in an amount not greater than 0.3% by weight, and a ratio, D4/D1, ranging from 1 to 1.3, where D1 is a number-averaged particle diameter of the carrier.Type: ApplicationFiled: September 1, 2006Publication date: December 28, 2006Inventors: Masahide Yamashita, Tomio Kondou, Kohsuke Suzuki
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Publication number: 20060024606Abstract: A carrier containing a core material and a resin coating layer located overlying the surface of the core material. The resin coating layer contains resin and electroconductive particles having an oil absorption amount of from 10 to 300 ml/100 g. The electroconductive particle contains a base material particle and an electroconductive coating layer located overlying the surface of the base material particle. The electroconductive coating layer contains an underlayer containing tin dioxide and an upper layer containing indium oxide and tin dioxide, located overlying the underlayer.Type: ApplicationFiled: July 27, 2005Publication date: February 2, 2006Inventors: Kohsuke Suzuki, Tomio Kondoh, Shinichiro Yagi, Hitoshi Iwatsuki
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Patent number: 6861191Abstract: A dry toner for developing electrostatic images, including a colorant and a binder resin which comprises a copolymer resin having (A) a polyol resin moiety having a main chain of polyoxyalkylene and obtained by reaction of (a) an epoxy resin, (b) a dihydric phenol, and (c) an alkylene oxide adduct of a dihydric phenol or a glycidyl ether thereof; and (B) a polyester resin moiety obtained by reacting an alkylene oxide adduct of a dihydric phenol or a glycidyl ether thereof with a polycarboxylic acid, wherein the weight ratio of the epoxy resin of the polyol resin moiety (A) to the polyester resin moiety (B) is 95:5 to 60:40, wherein the epoxy resin includes at least two kinds of bisphenol epoxy resins having different number-average molecular weights, and wherein the binder resin has an acid value of not greater than 5.Type: GrantFiled: January 31, 2002Date of Patent: March 1, 2005Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mochizuki, Hideki Sugiura, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki, Tomomi Suzuki, Yasuo Asahina
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Publication number: 20050003292Abstract: A carrier including a manganese ferrite core material having a layer on its surface such that 0.1?K?30, where K=(S/M)×100, S and M represent the standard deviation and average of M2/(M1+M2), respectively, M ranging from 0.05 to 0.45, and M1 and M2 represent the content of iron and manganese, respectively, in a carrier particle. The carrier has a magnetization ranging from 45 to 75 emu/g at 1,000 Oe, a mass-averaged particle diameter, D4, ranging from 25 to 65 ?m and carrier particles having a particle diameter not greater than 12 ?m are included in an amount not greater than 0.3% by weight, and a ratio, D4/D1, ranging from 1 to 1.3, where D1 is a number-averaged particle diameter of the carrier.Type: ApplicationFiled: May 13, 2004Publication date: January 6, 2005Inventors: Masahide Yamashita, Tomio Kondou, Kohsuke Suzuki
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Publication number: 20040253528Abstract: A carrier including a magnetic core material and a layer located on a surface of the magnetic core material, wherein the carrier satisfies the following relationships (1) to (3): 0.90≦(&sgr;a/&sgr;b)<1.00 (1); 200≦(&sgr;b·&rgr;c)≦400 (2); 10≦(&sgr;b/&rgr;c)≦20 (3), wherein &sgr;b represents a magnetization of the carrier at 1,000 Oe, &sgr;a represents a magnetization of the carrier after frictionized with a cylindrical sleeve under a specific condition and &rgr;c represents a true specific gravity of the carrier, wherein the carrier has a weight-average particle diameter of about 25 to about 65 &mgr;m and includes carrier particles having a weight-average particle diameter not greater than about 12 &mgr;m in an amount of not greater than about 0.3% by weight, wherein a ratio between the weight-average particle diameter and a number-average particle diameter of the carrier is about 1 to about 1.3, and wherein an electric resistance is from about 1.0×109 to about 1.Type: ApplicationFiled: January 30, 2004Publication date: December 16, 2004Inventors: Masahide Yamashita, Satoshi Mochizuki, Tomio Kondou, Kohsuke Suzuki
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Patent number: 6818369Abstract: A toner for electrostatic image development in which the weight concentration of polar-solvent-soluble material is 1000 &mgr;g/g or less, based on the toner, and an image forming method comprising a step of forming a toner image by developing a latent electrostatic image by using the toner for electrostatic image development.Type: GrantFiled: January 31, 2002Date of Patent: November 16, 2004Assignee: Ricoh Company, Ltd.Inventors: Hideki Sugiura, Satoshi Mochizuki, Yasuo Asahina, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki, Tomomi Tamura
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Patent number: 6770411Abstract: A toner including a binder resin, a colorant, and a product of an iron compound containing an aromatic hydroxylcarboxylic acid as a ligand and represented by the formula (I) described in the specification, wherein the product has such a characteristic that a filtrate obtained by filtering a dispersion of 10 g of the product dispersed in 200 ml of purified water provides an electric conductivity of not greater than 600 &mgr;S/cm.Type: GrantFiled: March 28, 2002Date of Patent: August 3, 2004Assignee: Ricoh Company, Ltd.Inventors: Minoru Masuda, Satoshi Mochizuki, Yasuo Asahina, Kazuhiko Umemura, Hideki Sugiura, Kohsuke Suzuki, Tomomi Tamura
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Publication number: 20030180643Abstract: A developer for developing an electrostatic latent image, including a carrier which includes core particles, and a surface layer surrounding each of the core particles and containing an acrylic resin binder; and a toner which includes toner particles and an external additive of inorganic or organic fine particles present on each of the toner particles. Each of the toner particles comprises a colorant, a matrix of a first resin, and a plurality of domains of a second resin dispersed in the matrix and containing a wax. The first resin is substantially free of tetrahydrofuran insoluble matters and has a weight average molecular weight of 3,000 to 90,000.Type: ApplicationFiled: March 20, 2003Publication date: September 25, 2003Inventors: Kohsuke Suzuki, Satoshi Mochizuki, Tomio Kondou, Masahide Yamashita, Tomomi Tamura, Takayuki Koike
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Publication number: 20030152857Abstract: A toner for electrophotography contains a binder resin and a colorant, the toner for electrophotography has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).Type: ApplicationFiled: August 7, 2002Publication date: August 14, 2003Inventors: Hideki Sugiura, Satoshi Mochizuki, Kazuhiko Umemura, Yasuo Asahina, Minoru Masuda, Kohsuke Suzuki, Tomomi Tamura, Yasuaki Iwamoto
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Patent number: 6500595Abstract: A carrier for electrophotographic developer, including a core material and a resin layer formed on the surface of the core material, wherein the resin layer has a plastic deformation degree not less than 0.5 &mgr;m and an elastic deformation degree not less than 0.5 &mgr;m. The resin layer is preferably prepared by crosslinking a mixture including an acrylic resin having a reactive hydroxyl group and at least one of a perfectly-alkylated melamine compound and a perfectly-alkylated guanamine compound.Type: GrantFiled: October 20, 2000Date of Patent: December 31, 2002Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mochizuki, Yasuo Asahina, Kohsuke Suzuki, Tomomi Suzuki
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Publication number: 20020182526Abstract: A toner including a binder resin, a colorant, and a product of an iron compound containing an aromatic hydroxylcarboxylic acid as a ligand and represented by the formula (I) described in the specification, wherein the product has such a characteristic that a filtrate obtained by filtering a dispersion of 10 g of the product dispersed in 200 ml of purified water provides an electric conductivity of not greater than 600 &mgr;S/cm.Type: ApplicationFiled: March 28, 2002Publication date: December 5, 2002Inventors: Minoru Masuda, Satoshi Mochizuki, Yasuo Asahina, Kazuhiko Umemura, Hideki Sugiura, Kohsuke Suzuki, Tomomi Tamura
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Publication number: 20020160290Abstract: A toner for electrostatic image development in which the weight concentration of polar-solvent-soluble material is 1000 &mgr;g or less, based on the toner, and an image forming method comprising a step of forming a toner image by developing a latent electrostatic image by using the toner for electrostatic image development.Type: ApplicationFiled: January 31, 2002Publication date: October 31, 2002Inventors: Hideki Sugiura, Satoshi Mochizuki, Yasuo Asahina, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki, Tomomi Tamura
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Publication number: 20020155366Abstract: A dry toner for developing electrostatic images, including a colorant and a binder resin which comprises a copolymer resin having (A) a polyol resin moiety having a main chain of polyoxyalkylene and obtained by reaction of (a) an epoxy resin, (b) a dihydric phenol, and (c) an alkylene oxide adduct of a dihydric phenol or a glycidyl ether thereof; and (B) a polyester resin moiety obtained by reacting an alkylene oxide adduct of a dihydric phenol or a glycidyl ether thereof with a polycarboxylic acid, wherein the weight ratio of the epoxy resin of the polyol resin moiety (A) to the polyester resin moiety (B) is 95:5 to 60:40, wherein the epoxy resin includes at least two kinds of bisphenol epoxy resins having different number-average molecular weights, and wherein the binder resin has an acid value of not greater than 5.Type: ApplicationFiled: January 31, 2002Publication date: October 24, 2002Inventors: Satoshi Mochizuki, Hideki Sugiura, Kazuhiko Umemura, Minoru Masuda, Kohsuke Suzuki, Tomomi Suzuki, Yasuo Asahina