Patents by Inventor Akiharu Kurebayashi
Akiharu Kurebayashi 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: 7905431Abstract: A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a first direction. Each of a plurality of second forging punches is operable to form a second recess on the metal plate. The second forging punches are arranged adjacently to first forging punches located at both ends of the punch row. The first recess is to be a first part of the member which is used to eject liquid from the liquid ejection head, and the second recess is to be a second part of the member which is not used to eject liquid.Type: GrantFiled: January 19, 2006Date of Patent: March 15, 2011Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Patent number: 7363795Abstract: A male die is adapted to be opposed to a first face of a metallic plate member. The male die includes a plurality of punches which are provided on the male die and arranged side by side in a first direction with a fixed pitch. A guide member is formed with a guide face which supports a side portion of the male die, at least when the punches are pressed into the plate member in a second direction, to form through holes therein.Type: GrantFiled: August 25, 2003Date of Patent: April 29, 2008Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Patent number: 7194886Abstract: There is disclosed a punch for forging a metallic plate member. A first die is adapted to be opposed to a first face of the plate member. A second die is adapted to be opposed to a second face of the plate member. A plurality of first projections are provided on the first die and arranged in a first direction with a fixed pitch. Each of the first projections is elongated in a second direction perpendicular to the first direction. A plurality of second projections are provided on the second die and arranged in the first direction with the fixed pitch. Each of the second projections is elongated in the second direction and provided with a concave portion extending in the second direction at a distal end portion thereof. The plate member is sandwiched between the first die and the second die so that the first projections and the second projections are cut into the plate member in a third direction orthogonal to the first direction and the second direction, to perform a first forging work.Type: GrantFiled: November 28, 2005Date of Patent: March 27, 2007Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Patent number: 7165433Abstract: There is disclosed a method of manufacturing a chamber formation plate of a liquid ejection head. The chamber formation plate includes a first region formed with at least recess portions to be pressure generating chambers communicated with nozzles from which liquid droplets are ejected by pressure generated in the pressure generating chambers. A metal plate and a forging die are provided. A reference part is provided on the metal plate. The reference part defines a relative position between the first region and the forging die. At least one deformation absorber is provided at a second region of the metal plate where is between the first region and the reference part. At least one plastic working is performed by the forging die, with respect to the first region to form at least the recess portions, while plastic deformation of the metal plate caused by the plastic working is absorbed by the deformation absorber.Type: GrantFiled: August 20, 2003Date of Patent: January 23, 2007Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Patent number: 7127929Abstract: A metallic plate member is provided. A first punch is operable to perform a first forging work to mold a first member in the plate member. The first member has a first function. A second punch is operable to perform a second forging work to mold a second member in the plate member. The second member including at least one kind of positioning member. The first forging work and the second forging work are performed at a single stage.Type: GrantFiled: August 25, 2003Date of Patent: October 31, 2006Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Publication number: 20060117829Abstract: A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a first direction. Each of a plurality of second forging punches is operable to form a second recess on the metal plate. The second forging punches are arranged adjacently to first forging punches located at both ends of the punch row. The first recess is to be a first part of the member which is used to eject liquid from the liquid ejection head, and the second recess is to be a second part of the member which is not used to eject liquid.Type: ApplicationFiled: January 19, 2006Publication date: June 8, 2006Inventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Patent number: 7052119Abstract: A chamber formation plate has a first face formed with a plurality of recesses arranged in a first direction at a fixed pitch such that each of the recesses is communicated with, via a through hole, a second face which is an opposite face of the first face. The chamber formation plate is comprised of nickel. A sealing plate is joined to the first face of the chamber formation plate so as to seal the recesses to form a plurality of pressure generating chambers. A metallic nozzle plate is formed with a plurality of nozzles, and joined to the second face of the chamber formation plate such that each of the nozzles is communicated with associated one of the pressure generating chamber via the through hole. A ratio of a grain size of a crystal of the nickel with respect to a thickness of a partition wall defined between each adjacent ones of the recesses is 60% or less.Type: GrantFiled: August 25, 2003Date of Patent: May 30, 2006Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Publication number: 20060101887Abstract: There is disclosed a punch for forging a metallic plate member. A first die is adapted to be opposed to a first face of the plate member. A second die is adapted to be opposed to a second face of the plate member. A plurality of first projections are provided on the first die and arranged in a first direction with a fixed pitch. Each of the first projections is elongated in a second direction perpendicular to the first direction. A plurality of second projections are provided on the second die and arranged in the first direction with the fixed pitch. Each of the second projections is elongated in the second direction and provided with a concave portion extending in the second direction at a distal end portion thereof. The plate member is sandwiched between the first die and the second die so that the first projections and the second projections are cut into the plate member in a third direction orthogonal to the first direction and the second direction, to perform a first forging work.Type: ApplicationFiled: November 28, 2005Publication date: May 18, 2006Inventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Patent number: 7040134Abstract: A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a first direction. Each of a plurality of second forging punches is operable to form a second recess on the metal plate. The second forging punches are arranged adjacently to first forging punches located at both ends of the punch row. The first recess is to be a first part of the member which is used to eject liquid from the liquid ejection head, and the second recess is to be a second part of the member which is not used to eject liquid.Type: GrantFiled: August 21, 2003Date of Patent: May 9, 2006Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Patent number: 7021749Abstract: In order to manufacture a liquid ejection apparatus, a metal board is prepared. The metal board is subjected to a plastic working to form a plurality of recesses on a first face in a first region of the metal board. Through holes are punched so as to communicate the recesses and a second face of the metal board. The metal board is subjected to a plastic working to form a plurality of dents in a second region of the meal board. A metallic nozzle plate formed with nozzles is joined onto the second face of the metal board, such that each of the nozzles is communicated with one of the through holes.Type: GrantFiled: August 20, 2003Date of Patent: April 4, 2006Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Patent number: 6997027Abstract: There is disclosed a punch for forging a metallic plate member. A first die is adapted to be opposed to a first face of the plate member. A second die is adapted to be opposed to a second face of the plate member. A plurality of first projections are provided on the first die and arranged in a first direction with a fixed pitch. Each of the first projections is elongated in a second direction perpendicular to the first direction. A plurality of second projections are provided on the second die and arranged in the first direction with the fixed pitch. Each of the second projections is elongated in the second direction and provided with a concave portion extending in the second direction at a distal end portion thereof. The plate member is sandwiched between the first die and the second die so that the first projections and the second projections are cut into the plate member in a third direction orthogonal to the first direction and the second direction, to perform a first forging work.Type: GrantFiled: August 20, 2003Date of Patent: February 14, 2006Assignee: Seiko Epson CorporationInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Publication number: 20050248626Abstract: In order to manufacture a liquid ejection apparatus, a metal board is prepared. The metal board is subjected to a plastic working to form a plurality of recesses on a first face in a first region of the metal board. Through holes are punched so as to communicate the recesses and a second face of the metal board. The metal board is subjected to a plastic working to form a plurality of dents in a second region of the meal board. A metallic nozzle plate formed with nozzles is joined onto the second face of the metal board, such that each of the nozzles is communicated with one of the through holes.Type: ApplicationFiled: August 20, 2003Publication date: November 10, 2005Inventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Publication number: 20040150689Abstract: A male die is adapted to be opposed to a first face of a metallic plate member. The male die includes a plurality of punches which are provided on the male die and arranged side by side in a first direction with a fixed pitch. A guide member is formed with a guide face which supports a side portion of the male die, at least when the punches are pressed into the plate member in a second direction, to form through holes therein.Type: ApplicationFiled: August 25, 2003Publication date: August 5, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Publication number: 20040125178Abstract: A chamber formation plate has a first face formed with a plurality of recesses arranged in a first direction at a fixed pitch such that each of the recesses is communicated with, via a through hole, a second face which is an opposite face of the first face. The chamber formation plate is comprised of nickel. A sealing plate is joined to the first face of the chamber formation plate so as to seal the recesses to form a plurality of pressure generating chambers. A metallic nozzle plate is formed with a plurality of nozzles, and joined to the second face of the chamber formation plate such that each of the nozzles is communicated with associated one of the pressure generating chamber via the through hole. A ratio of a grain size of a crystal of the nickel with respect to a thickness of a partition wall defined between each adjacent ones of the recesses is 60% or less.Type: ApplicationFiled: August 25, 2003Publication date: July 1, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Publication number: 20040112110Abstract: There is disclosed a punch for forging a metallic plate member. A first die is adapted to be opposed to a first face of the plate member. A second die is adapted to be opposed to a second face of the plate member. A plurality of first projections are provided on the first die and arranged in a first direction with a fixed pitch. Each of the first projections is elongated in a second direction perpendicular to the first direction. A plurality of second projections are provided on the second die and arranged in the first direction with the fixed pitch. Each of the second projections is elongated in the second direction and provided with a concave portion extending in the second direction at a distal end portion thereof. The plate member is sandwiched between the first die and the second die so that the first projections and the second projections are cut into the plate member in a third direction orthogonal to the first direction and the second direction, to perform a first forging work.Type: ApplicationFiled: August 20, 2003Publication date: June 17, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Publication number: 20040112109Abstract: There is disclosed a method of manufacturing a chamber formation plate of a liquid ejection head. The chamber formation plate includes a first region formed with at least recess portions to be pressure generating chambers communicated with nozzles from which liquid droplets are ejected by pressure generated in the pressure generating chambers. A metal plate and a forging die are provided. A reference part is provided on the metal plate. The reference part defines a relative position between the first region and the forging die. At least one deformation absorber is provided at a second region of the metal plate where is between the first region and the reference part. At least one plastic working is performed by the forging die, with respect to the first region to form at least the recess portions, while plastic deformation of the metal plate caused by the plastic working is absorbed by the deformation absorber.Type: ApplicationFiled: August 20, 2003Publication date: June 17, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Akiharu Kurebayashi, Kazushige Hakeda, Ryoji Uesugi
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Publication number: 20040107759Abstract: A metallic plate member is provided. A first punch is operable to perform a first forging work to mold a first member in the plate member. The first member has a first function. A second punch is operable to perform a second forging work to mold a second member in the plate member. The second member including at least one kind of positioning member. The first forging work and the second forging work are performed at a single stage.Type: ApplicationFiled: August 25, 2003Publication date: June 10, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi
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Publication number: 20040055353Abstract: A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a first direction. Each of a plurality of second forging punches is operable to form a second recess on the metal plate. The second forging punches are arranged adjacently to first forging punches located at both ends of the punch row. The first recess is to be a first part of the member which is used to eject liquid from the liquid ejection head, and the second recess is to be a second part of the member which is not used to eject liquid.Type: ApplicationFiled: August 21, 2003Publication date: March 25, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Fujio Akahane, Nagamitsu Takashima, Kazushige Hakeda, Ryoji Uesugi, Akiharu Kurebayashi