Patents by Inventor Katsutoshi Aoki
Katsutoshi Aoki 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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Publication number: 20240042746Abstract: The present invention provides a resin film material produced from a resin material that includes a laminate that includes a resin layer with an evaporated metal layer, the resin film material containing a metal in the evaporated metal layer in the form of particles, wherein the metal particles are dispersed in the resin film material, and the number of metal particles with an area-equivalent diameter of 200 ?m or more present per cm2 of the resin film material is 1 or less. It is preferable that the resin film material is produced from a resin material that is made of a laminate group that includes the laminate that includes a resin layer with an evaporated metal layer and a laminate that includes a metal layer-free resin layer.Type: ApplicationFiled: November 30, 2021Publication date: February 8, 2024Applicant: KAO CORPORATIONInventors: Shunsuke FUKUI, Gota KATAYANAGI, Keito SATO, Katsutoshi AOKI
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Patent number: 8921021Abstract: A polyester resin for a toner obtained by polycondensing a carboxylic acid component and an alcohol component, wherein the polyester resin for a toner is obtained using, as the carboxylic acid component and/or the alcohol component, a specified aromatic compound; a polyester resin for a toner obtained by polycondensing a reaction product obtained by treating a specified aromatic compound with a carboxylic acid having an unsaturated reactive group, a carboxylic acid component, and an alcohol component; a resin binder for a toner, containing the polyester resin for a toner; and a toner for electrophotography, containing the resin binder. The polyester resin for a toner of the present invention is suitably used for a resin binder of a toner used in developing and the like of latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: GrantFiled: October 1, 2010Date of Patent: December 30, 2014Assignee: Kao CorporationInventors: Norihiro Fukuri, Takashi Kubo, Yasunori Inagaki, Katsutoshi Aoki
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Patent number: 8841057Abstract: A resin binder for use in a toner for electrophotography, containing a polycondensation resin obtainable by polycondensing an alcohol component containing an aliphatic polyhydric alcohol having two or more secondary carbon atoms with a hydroxyl group bound thereto (an alcohol A), and a carboxylic acid component, wherein the alcohol A is contained in an amount of from 10 to 100% by mol, of the alcohol component; and a toner for electrophotography containing the resin binder. The toner for electrophotography of the present invention is suitably used in developing latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: GrantFiled: October 29, 2008Date of Patent: September 23, 2014Assignee: Kao CorporationInventors: Katsutoshi Aoki, Norihiro Fukuri, Takashi Kubo, Yoshitomo Kimura, Yasunori Inagaki, Yoshihiro Ueno, Hidenori Tachi
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Patent number: 8835087Abstract: A polyester for a toner obtained by polycondensing an aliphatic hydroxycarboxylic acid compound having a total number of hydroxy group or groups and carboxyl group or groups of 4 or more; an alcohol component containing an aliphatic diol having a hydroxyl group bound to a secondary carbon atom in an amount of 50% by mol or more; and a carboxylic acid component, provided that the aliphatic hydroxycarboxylic compound is not included, wherein the aliphatic hydroxycarboxylic acid compound and the aliphatic diol having a hydroxyl group bound to a secondary carbon atom are in a molar ratio, i.e. the aliphatic hydroxycarboxylic acid compound/the aliphatic diol having a hydroxyl group bound to a secondary carbon atom, of from 0.05 to 0.8; a resin binder for a toner, containing the polyester; and a toner for electrophotography, containing the resin binder.Type: GrantFiled: September 30, 2010Date of Patent: September 16, 2014Assignee: Kao CorporationInventors: Norihiro Fukuri, Takashi Kubo, Katsutoshi Aoki, Yasunori Inagaki
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Patent number: 8309291Abstract: A polyester for a toner, obtainable by polycondensing an alcohol component and a carboxylic acid component containing a (meth)acrylic acid-modified rosin; and a toner containing the polyester for a toner. The polyester for a toner of the present invention is usable as a resin binder for a toner usable in, for example, developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: GrantFiled: April 16, 2007Date of Patent: November 13, 2012Assignee: Kao CorporationInventors: Yoshitomo Kimura, Yasunori Inagaki, Katsutoshi Aoki, Takashi Kubo, Yoshihiro Ueno
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Patent number: 8261848Abstract: A plurality of weight hammers (7,8) are provided, and each of the plurality of weight hammers has a shape for substantially evenly applying a hammering force with respect to a surface to be hammered of an object to be hammered (11), about a center line of the object to be hammered. Rotors (9, 10) for driving the weight hammers (7,8) are provided to the same rotating shaft (22) in such a positional relation that an engagement claw (9a) of one rotor (9) engages and drives one weight hammer (7), and, when engagement of the weight hammer (7) is released, an engagement claw (10a) of another rotor (10) in driving engages another weight hammer (8). The rotors are driven by the same driving means (26).Type: GrantFiled: November 5, 2007Date of Patent: September 11, 2012Assignee: EMS Co., Ltd.Inventor: Katsutoshi Aoki
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Publication number: 20120184700Abstract: A polyester resin for a toner obtained by polycondensing a carboxylic acid component and an alcohol component, wherein the polyester resin for a toner is obtained using, as the carboxylic acid component and/or the alcohol component, a specified aromatic compound; a polyester resin for a toner obtained by polycondensing a reaction product obtained by treating a specified aromatic compound with a carboxylic acid having an unsaturated reactive group, a carboxylic acid component, and an alcohol component; a resin binder for a toner, containing the polyester resin for a toner; and a toner for electrophotography, containing the resin binder. The polyester resin for a toner of the present invention is suitably used for a resin binder of a toner used in developing and the like of latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: ApplicationFiled: October 1, 2010Publication date: July 19, 2012Applicant: Kao CorporationInventors: Norihiro Fukuri, Takashi Kubo, Yasunori Inagaki, Katsutoshi Aoki
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Publication number: 20120184708Abstract: A polyester for a toner obtained by polycondensing an aliphatic hydroxycarboxylic acid compound having a total number of hydroxy group or groups and carboxyl group or groups of 4 or more; an alcohol component containing an aliphatic diol having a hydroxyl group bound to a secondary carbon atom in an amount of 50% by mol or more; and a carboxylic acid component, provided that the aliphatic hydroxycarboxylic compound is not included, wherein the aliphatic hydroxycarboxylic acid compound and the aliphatic diol having a hydroxyl group bound to a secondary carbon atom are in a molar ratio, i.e. the aliphatic hydroxycarboxylic acid compound/the aliphatic diol having a hydroxyl group bound to a secondary carbon atom, of from 0.05 to 0.8; a resin binder for a toner, containing the polyester; and a toner for electrophotography, containing the resin binder.Type: ApplicationFiled: September 30, 2010Publication date: July 19, 2012Applicant: Kao CorporationInventors: Norihiro Fukuri, Takashi Kubo, Katsutoshi Aoki, Yasunori Inagaki
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Patent number: 8067144Abstract: The present invention relates to a polyester having an excellent hydrolysis resistance even when used in a process for producing a toner for electrophotography which includes a step of forming a raw material into particles in an aqueous medium, and a toner for electrophotography which contains the polyester and is excellent in storage stability and fixing property. There are provided a polyester for a toner for electrophotography which is used in a process for producing a toner including a step of forming a raw material component into particles in an aqueous medium or a solution, and produced by polycondensing an alcohol component with a carboxylic acid component containing at least one compound selected from the group consisting of an alkyl succinic acid and an alkenyl succinic acid, as well as a toner for electrophotography which contains the polyester.Type: GrantFiled: April 24, 2008Date of Patent: November 29, 2011Assignee: Kao CorporationInventors: Hiroshi Mizuhata, Takashi Kubo, Takashi Mukai, Hidehito Ikebata, Katsutoshi Aoki
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Publication number: 20110212395Abstract: A resin binder for use in a toner for electrophotography, containing a polycondensation resin obtainable by polycondensing an alcohol component containing an aliphatic polyhydric alcohol having two or more secondary carbon atoms with a hydroxyl group bound thereto (an alcohol A), and a carboxylic acid component, wherein the alcohol A is contained in an amount of from 10 to 100% by mol, of the alcohol component; and a toner for electrophotography containing the resin binder. The toner for electrophotography of the present invention is suitably used in developing latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: ApplicationFiled: October 29, 2008Publication date: September 1, 2011Applicant: KAO CORPORATIONInventors: Katsutoshi Aoki, Norihiro Fukuri, Takashi Kubo, Yoshitomo Kimura, Yasunori Inagaki, Yoshihiro Ueno, Hidenori Tachi
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Patent number: 7824832Abstract: A toner for electrophotography, containing a resin binder containing a polyester-based resin (A) and a polyester-based resin (B) having a softening point of a temperature higher than the polyester-based resin (A) by 10° C. or more, wherein at least one of the polyester-based resins (A) and (B) is a resin derived from a (meth)acrylic acid-modified rosin, having a polyester unit obtainable by polycondensing an alcohol component and a carboxylic acid component containing a (meth)acrylic acid-modified rosin, and a method for producing the toner. The toner for electrophotography of the present invention is usable in, for example, developing or the like latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: GrantFiled: May 30, 2007Date of Patent: November 2, 2010Assignee: Kao CorporationInventors: Yoshitomo Kimura, Yasunori Inagaki, Yoshihiro Ueno, Katsutoshi Aoki
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Publication number: 20100252289Abstract: A plurality of weight hammers (7,8) are provided, and each of the plurality of weight hammers has a shape for substantially evenly applying a hammering force with respect to a surface to be hammered of an object to be hammered (11), about a center line of the object to be hammered. Rotors (9, 10) for driving the weight hammers (7,8) are provided to the same rotating shaft (22) in such a positional relation that an engagement claw (9a) of one rotor (9) engages and drives one weight hammer (7), and, when engagement of the weight hammer (7) is released, an engagement claw (10a) of another rotor (10) in driving engages another weight hammer (8). The rotors are driven by the same driving means (26).Type: ApplicationFiled: November 5, 2007Publication date: October 7, 2010Applicant: EMS CO., LTD.Inventor: Katsutoshi Aoki
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Publication number: 20090117485Abstract: A toner for electrophotography, containing a resin binder containing a polyester-based resin (A) and a polyester-based resin (B) having a softening point of a temperature higher than the polyester-based resin (A) by 10° C. or more, wherein at least one of the polyester-based resins (A) and (B) is a resin derived from a (meth)acrylic acid-modified rosin, having a polyester unit obtainable by polycondensing an alcohol component and a carboxylic acid component containing a (meth)acrylic acid-modified rosin, and a method for producing the toner. The toner for electrophotography of the present invention is usable in, for example, developing or the like latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: ApplicationFiled: May 30, 2007Publication date: May 7, 2009Applicant: KAO CORPORATIONInventors: Yoshitomo Kimura, Yasunori Inagaki, Yoshihiro Ueno, Katsutoshi Aoki
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Publication number: 20090069530Abstract: A polyester for a toner, obtainable by polycondensing an alcohol component and a carboxylic acid component containing a (meth)acrylic acid-modified rosin; and a toner containing the polyester for a toner. The polyester for a toner of the present invention is usable as a resin binder for a toner usable in, for example, developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.Type: ApplicationFiled: April 16, 2007Publication date: March 12, 2009Inventors: Yoshitomo Kimura, Yasunori Inagaki, Katsutoshi Aoki, Takashi Kubo, Yoshihiro Ueno
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Publication number: 20080248414Abstract: The present invention relates to a polyester having an excellent hydrolysis resistance even when used in a process for producing a toner for electrophotography which includes a step of forming a raw material into particles in an aqueous medium, and a toner for electrophotography which contains the polyester and is excellent in storage stability and fixing property. There are provided a polyester for a toner for electrophotography which is used in a process for producing a toner including a step of forming a raw material component into particles in an aqueous medium or a solution, and produced by polycondensing an alcohol component with a carboxylic acid component containing at least one compound selected from the group consisting of an alkyl succinic acid and an alkenyl succinic acid, as well as a toner for electrophotography which contains the polyester.Type: ApplicationFiled: April 24, 2008Publication date: October 9, 2008Applicant: KAO CORPORATIONInventors: Hiroshi Mizuhata, Takashi Kubo, Takashi Mukai, Hidehito Ikebata, Katsutoshi Aoki
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Patent number: 7294198Abstract: A process for producing single-crystal gallium nitride comprising the steps of performing congruent melting of gallium nitride at a high pressure between 6×104 atm. and 10×104 atm. and at a high temperature between 2,200° C. and 2,500° C. and then slowly cooling the obtained gallium nitride melt at the stated high pressure.Type: GrantFiled: July 16, 2004Date of Patent: November 13, 2007Assignee: Japan Atomic Energy Research InstituteInventors: Wataru Utsumi, Hiroyuki Saitoh, Katsutoshi Aoki
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Publication number: 20070219313Abstract: The present invention relates to a polyester having an excellent hydrolysis resistance even when used in a process for producing a toner for electrophotography which includes a step of forming a raw material into particles in an aqueous medium, and a toner for electrophotography which contains the polyester and is excellent in storage stability and fixing property. There are provided a polyester for a toner for electrophotography which is used in a process for producing a toner including a step of forming a raw material component into particles in an aqueous medium or a solution, and produced by polycondensing an alcohol component with a carboxylic acid component containing at least one compound selected from the group consisting of an alkyl succinic acid and an alkenyl succinic acid, as well as a toner for electrophotography which contains the polyester.Type: ApplicationFiled: February 1, 2007Publication date: September 20, 2007Applicant: KAO CORPORATIONInventors: Hiroshi Mizuhata, Takashi Kubo, Takashi Mukai, Hidehito Ikebata, Katsutoshi Aoki
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Publication number: 20070093597Abstract: A polyester resin composition for a toner comprising a titanium compound in an amount of from 0.005 to 4% by weight, and an inorganic phosphorus compound in an amount of from 0.001 to 5% by weight; a toner comprising the polyester resin composition as defined above; and a process for preparing the polyester resin composition for a toner as defined above, comprising the step of polycondensing the raw material monomers for the polyester in the presence of a titanium compound and an inorganic phosphorus compound. The polyester resin composition for a toner is suitably used as a resin binder for a toner for developing a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like, a process for preparing the same, and a toner comprising the polyester resin composition.Type: ApplicationFiled: November 21, 2006Publication date: April 26, 2007Applicant: Kao CorporationInventors: Takashi KUBO, Katsutoshi Aoki, Eiji Shirai
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Patent number: 7205357Abstract: A polyester resin composition for a toner comprising a titanium compound in an amount of from 0.005 to 4% by weight, and an inorganic phosphorus compound in an amount of from 0.001 to 5% by weight; a toner comprising the polyester resin composition as defined above; and a process for preparing the polyester resin composition for a toner as defined above, comprising the step of polycondensing the raw material monomers for the polyester in the presence of a titanium compound and an inorganic phosphorus compound. The polyester resin composition for a toner is suitably used as a resin binder for a toner for developing a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like, a process for preparing the same, and a toner comprising the polyester resin composition.Type: GrantFiled: October 28, 2003Date of Patent: April 17, 2007Assignee: Kao CorporationInventors: Takashi Kubo, Katsutoshi Aoki, Eiji Shirai
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Patent number: 7014970Abstract: A resin composition having a softening point of from 80° to 165° C., obtained by reacting a poly C2-4 alkylene terephthalate having a melting point of 200° C. or more with a low-molecular weight polyester having a number-average molecular weight of from 400 to 2500; a resin binder for a toner comprising the above resin composition; a toner comprising the above resin binder; a process for preparing a resin composition having a softening point of from 80° to 165° C., comprising the step of reacting a poly C2-4 alkylene terephthalate having a melting point of 200° C. or more with a low-molecular weight polyester having a number-average molecular weight of from 400 to 2500. The resin composition can be suitably used as a resin binder for a toner used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing, and the like.Type: GrantFiled: October 17, 2003Date of Patent: March 21, 2006Assignee: Kao CorporationInventors: Eiji Morimoto, Hidenori Tachi, Katsutoshi Aoki