Patents by Inventor Kazukuni Nishimura
Kazukuni Nishimura 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: 20240160120Abstract: An electrophotographic photoreceptor includes a photosensitive layer on a support, wherein the photosensitive layer includes at least a charge generating layer, a charge transporting layer, and a protective layer, the charge generating layer contains titanyl phthalocyanine or a derivative thereof, the charge transporting layer contains a charge transporting material, the protective layer contains a reactant of a polymerizable monomer having a charge transporting structure and a polymerizable monomer having no charge transporting structure, and the charge transporting material, and a ratio of the mass of the charge transporting material contained in the protective layer is greater than 3% by mass and less than 9% by mass with respect to the total mass of a reactant of the polymerizable monomer having the charge transporting structure and the polymerizable monomer having no charge transporting structure, and the charge transporting material.Type: ApplicationFiled: September 27, 2023Publication date: May 16, 2024Inventors: Takeshi ISHIDA, Akihiko ITAMI, Toshiyuki FUJITA, Kazukuni NISHIMURA
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Publication number: 20240004323Abstract: Provided is an electrophotographic photoreceptor capable of reducing the rotational torque of the photoreceptor and also reducing the increase in the rotational torque during long-term use when a cured layer obtained by curing a charge transporting compound having a radically polymerizable group is used as a protective layer. In the electrophotographic photoreceptor, a conductive support, a photosensitive layer, and a protective layer are laminated in this order. The protective layer is formed of a cured product of a composition containing the following: a charge transporting compound having a radically polymerizable functional group; and metal oxide particles surface-treated with a surface treating agent having a silicone chain in a side chain thereof.Type: ApplicationFiled: June 20, 2023Publication date: January 4, 2024Inventors: Toshiyuki FUJITA, Kazukuni Nishimura
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Publication number: 20230324818Abstract: Provided is an electrophotographic photoreceptor having at least a charge transport layer and a protective layer sequentially laminated on a conductive support, wherein the protective layer contains a cured product of a composition containing a charge transport compound having a chain polymerizable functional group; the charge transport layer and the protective layer are continuously laminated with intervening a mixed layer therebetween in which components of both layers of the charge transport layer and the protective layer are compatible; and the mixed layer has a thickness in the range of 0.1 to 1.0 ?m.Type: ApplicationFiled: March 31, 2023Publication date: October 12, 2023Inventors: Kazukuni NISHIMURA, Toshiyuki FUJITA, Hiroki TAKAO, Seijiro TAKAHASHI, Tomoko SAKIMURA
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Publication number: 20230185227Abstract: An electrophotographic image forming system forms an electrostatic latent image on at least a photoreceptor, develops an image using an electrostatic charge image developing toner, and removes the toner using a cleaning blade. A tip ridge of the cleaning blade is pressed against a surface of the photoreceptor. The system includes a photosensitive layer of the photoreceptor and a surface protecting layer that is provided on a surface of the photosensitive layer. The surface protecting layer includes a polymerizable monomer having at least two polymerizable groups in a molecule and a polymer of a hole transporting compound having a polymerizable group represented by General formula (1). The tip ridge of the cleaning blade has an edge angle that is obtuse and less than 120° and is pressed against the surface of the photoreceptor at an effective contact angle that is in a range of 8 to 20°.Type: ApplicationFiled: December 12, 2022Publication date: June 15, 2023Applicant: KONICA MINOLTA, INC.Inventors: Taiki AMEMIYA, Kazutoshi KOBAYASHI, Yukio HOSOYA, Seijiro TAKAHASHI, Tomoko SAKIMURA, Kazukuni NISHIMURA
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Patent number: 9190617Abstract: An all solid-state dye sensitizing type photoelectric conversion element excellent in photoelectric conversion efficiency and stability of photoelectric conversion function due to the prevention of desorption of the dye, and a solar cell comprising the photoelectric conversion element are provided. The present invention relates to a photoelectric conversion element comprising a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate, wherein the sensitizing dye is represented by the general formula (1) and the solid hole transport layer comprises a polymer obtainable by polymerizing a compound represented by the following general formula (2) or a multimer of the compound.Type: GrantFiled: July 25, 2012Date of Patent: November 17, 2015Assignee: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Hideya Miwa, Masahiko Kurachi, Hidekazu Kawasaki, Kazukuni Nishimura
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Patent number: 9029694Abstract: A photoelectric conversion element comprising a substrate, a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, a hole transport layer and a second electrode, wherein the hole transport layer comprises a polymer having a repeat unit represented by Formula (1) or (2),Type: GrantFiled: July 29, 2011Date of Patent: May 12, 2015Assignee: Konica Minolta, Inc.Inventors: Kazukuni Nishimura, Kazuya Isobe, Kenichi Onaka
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Patent number: 8668846Abstract: A dye-sensitized photoelectric conversion element, comprises a pair of electrodes arranged opposite to each other; a semiconductor layer including a semiconductor supporting a sensitizing dye; and an electrolyte layer. At least the semiconductor layer and the electrolyte layer are provided between the pair of electrodes, and the sensitizing dye contains a compound represented by the following Formula (1).Type: GrantFiled: April 23, 2010Date of Patent: March 11, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hidekazu Kawasaki, Akihiko Itami, Kazuya Isobe, Hideya Miwa, Kazukuni Nishimura, Mayuko Ushiro
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Patent number: 8471143Abstract: Provided is a photoelectric conversion element containing a pair of opposite electrodes having therebetween: a semiconductor layer containing a sensitizing dye which is supported by a semiconductor; and a charge transport layer, wherein the sensitizing dye is a compound represented by Formula (1),Type: GrantFiled: April 23, 2010Date of Patent: June 25, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hidekazu Kawasaki, Akihiko Itami, Kazuya Isobe, Hideya Miwa, Kazukuni Nishimura, Mayuko Ushiro
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Publication number: 20130125987Abstract: The object is to provide a photoelectric conversion element having excellent photoelectric conversion efficiency, and high durability.Type: ApplicationFiled: November 9, 2012Publication date: May 23, 2013Inventors: Hidekazu KAWASAKI, Kazukuni NISHIMURA, Hideya MIWA
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Patent number: 8410356Abstract: Provided is a photoelectric conversion element for which a novel compound (dye) exhibiting excellent adsorption to an oxide semiconductor and exhibiting high photoelectric conversion efficiency is used, and also provided is a solar cell employing the photoelectric conversion element. Disclosed is a dye-sensitizing type photoelectric conversion element possessing at least a pair of facing electrodes, a semiconductor layer possessing a semiconductor and a sensitizing dye supported on the semiconductor, and a charge transport layer, wherein the semiconductor layer and the charge transport layer are provided between the facing electrodes, and wherein the sensitizing dye comprises a compound represented by the following Formula (1).Type: GrantFiled: April 13, 2010Date of Patent: April 2, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hidekazu Kawasaki, Akihiko Itami, Kazuya Isobe, Hideya Miwa, Kazukuni Nishimura, Mayuko Ushiro
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Patent number: 8395041Abstract: Disclosed is a photoelectric conversion element comprising a conductive support and provided thereon, a semiconductor layer, a charge transporting layer and an opposed electrode, the semiconductor layer comprising a semiconductor with a dye, wherein the dye is a compound represented by the following formula (1).Type: GrantFiled: April 12, 2010Date of Patent: March 12, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hidekazu Kawasaki, Akihiko Itami, Kazuya Isobe, Hideya Miwa, Kazukuni Nishimura, Mayuko Ushiro
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Publication number: 20130025682Abstract: An all solid-state dye sensitizing type photoelectric conversion element excellent in photoelectric conversion efficiency and stability of photoelectric conversion function due to the prevention of desorption of the dye, and a solar cell comprising the photoelectric conversion element are provided. The present invention relates to a photoelectric conversion element comprising a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate, wherein the sensitizing dye is represented by the general formula (1) and the solid hole transport layer comprises a polymer obtainable by polymerizing a compound represented by the following general formula (2) or a multimer of the compound.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Hideya MIWA, Masahiko KURACHI, Hidekazu KAWASAKI, Kazukuni NISHIMURA
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Publication number: 20120325319Abstract: A photoelectric conversion element excellent in photoelectric conversion efficiency and stability of photoelectric conversion function, a method for producing the photoelectric conversion element, and a solar cell comprising the photoelectric conversion element are provided. The present invention relates to a photoelectric conversion element comprising a substrate, a first electrode, a photoelectric conversion layer containing a semiconductor and a sensitizing dye, and a hole transport layer, and a second electrode, wherein the hole transport layer comprises a polymer having a repeating unit represented by the general formula (1) or (2), and the sensitizing dye is represented by any of the general formulas (3A) to (3C).Type: ApplicationFiled: June 12, 2012Publication date: December 27, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kazukuni NISHIMURA, Kenichi ONAKA, Kazuya ISOBE
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Publication number: 20120247562Abstract: Provided are a dye-sensitized solar cell with which desired photoelectric conversion efficiency is obtained when short-circuiting between a photoelectric conversion layer and a charge transport layer is suppressed, and also a manufacturing method thereof. Disclosed is a dye-sensitized solar cell comprising a photoelectric conversion element comprising a substrate and layered thereon, a first electrode layer, a photoelectric conversion layer in which a sensitizing dye is carried onto a semiconductor material, a charge transport layer and a second electrode layer in this order, wherein the photoelectric conversion layer comprises a compound represented by the following Formula (1): Formula (1) (R-A)n-M, where R represents a monovalent organic group having a straight-chain structure having no substituent but at least 6 atoms in chain length at a terminal, A represents an oxo acid group, M represents a metal atom, and n is an integer of 2-5.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kazukuni NISHIMURA, Kazuya ISOBE, Teruo SASAKI
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Patent number: 8247687Abstract: Provided are a newly developed dye-sensitizing type photoelectric conversion element employing a highly durable sensitizing dye, exhibiting high photoelectric conversion efficiency, and a solar cell fitted with the photoelectric conversion element. Also disclosed is a photoelectric conversion element comprising a compound represented by Formula (1) between a pair of facing electrodes.Type: GrantFiled: April 2, 2009Date of Patent: August 21, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hideya Miwa, Akihiko Itami, Kazuya Isobe, Kazukuni Nishimura, Hidekazu Kawasaki, Mayuko Ushiro
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Patent number: 8242355Abstract: A photoelectric conversion element having a pair of electrodes, and a semiconductor layer comprising a semiconductor carrying a dye and an electrolyte layer is disclosed.Type: GrantFiled: March 27, 2008Date of Patent: August 14, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Kazukuni Nishimura, Akihiko Itami, Fumitaka Mochizuki, Hideya Miwa, Hidekazu Kawasaki
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Publication number: 20120073661Abstract: Provided is a photoelectric conversion element composed of a highly durable sensitizing dye, exhibiting high photoelectric conversion efficiency, and also a solar cell fitted with the photoelectric conversion element.Type: ApplicationFiled: September 20, 2011Publication date: March 29, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kenichi ONAKA, Kazuya ISOBE, Hideya MIWA, Kazukuni NISHIMURA
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Publication number: 20120060927Abstract: The present invention provides a photoelectric conversion element exhibiting excellent photoelectric conversion efficiency and excellent stability in photoelectric conversion function; a method of manufacturing the photoelectric conversion element; and a solar cell thereof in order to solve the current problems.Type: ApplicationFiled: September 9, 2011Publication date: March 15, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kenichi ONAKA, Kazuya ISOBE, Kazukuni NISHIMURA
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Publication number: 20120042953Abstract: A photoelectric conversion element comprising a substrate, a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, a hole transport layer and a second electrode, wherein the hole transport layer comprises a polymer having a repeat unit represented by Formula (1) or (2),Type: ApplicationFiled: July 29, 2011Publication date: February 23, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kazukuni NISHIMURA, Kazuya ISOBE, Kenichi ONAKA
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Patent number: 8039741Abstract: A photoelectric conversion element comprising a pair of electrodes containing therebetween a compound represented by Formula (1) or Formula (2):Type: GrantFiled: October 17, 2007Date of Patent: October 18, 2011Assignee: Konica Minolta Business Technologies, Inc.Inventors: Akihiko Itami, Fumitaka Mochizuki, Kazukuni Nishimura