Patents by Inventor Akihiko Tsunoya
Akihiko Tsunoya 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: 20180085825Abstract: A fluid material ejecting apparatus includes a material chamber to which a fluid material containing at least one of metal particles and ceramic particles is supplied, a valve seat constituting a part of the material chamber and including an ejection port, a piston movable in the material chamber in directions toward and away from the ejection port, and a driver of the piston. The driver is configured to cause the piston to contact the valve seat from a position away from the valve seat and move in the direction toward the ejection port so as to slide along the valve seat, to thereby eject the fluid material through the ejection port. Sliding surfaces of the piston and the valve seat via which the piston and the valve seat contact each other have a higher Vickers hardness than the particles contained in the fluid material.Type: ApplicationFiled: September 11, 2017Publication date: March 29, 2018Inventors: Masaya ISHIDA, Takeshi MIYASHITA, Eiji OKAMOTO, Akihiko TSUNOYA, Naoko SHIMA
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Publication number: 20180079193Abstract: A three-dimensional modeling apparatus includes an ejection portion capable of ejecting a fluid material, which is a material of an object, and a control portion that forms a laminated body in which one layer or more of cross-section bodies are laminated by executing one or more repetitions of a cross-section body formation process, which forms a cross-section body equivalent to one layer of the object by controlling the ejection portion and ejecting the fluid material. The control portion executes a correction process that ejects the fluid material onto a target correction location, which is at least a portion of an outline section of an upper surface of the laminated body.Type: ApplicationFiled: September 6, 2017Publication date: March 22, 2018Inventors: Masaya ISHIDA, Toshimitsu HIRAI, Eiji OKAMOTO, Akihiko TSUNOYA, Junichi SANO
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Publication number: 20180079183Abstract: A three-dimensional modeling apparatus includes an ejection portion capable of ejecting a fluid material, and a control portion that forms a laminated body in which one layer or more of cross-section bodies are laminated by executing one or more repetitions of a cross-section body formation process. The control portion reduces a total amount of the fluid material to be ejected at a first coordinate, which configures the apex that corresponds to the recess, to be lower than a total amount of the fluid material to be ejected at a second coordinate, which configures a region other than an outline section of the planar shape in a case in which an apex, which corresponds to a recess in a planar shape when the laminated body is viewed from above in a planar manner, is present.Type: ApplicationFiled: September 6, 2017Publication date: March 22, 2018Inventors: Akihiko TSUNOYA, Masaya ISHIDA, Eiji OKAMOTO
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Publication number: 20180071959Abstract: A three-dimensional modeling apparatus includes a modeling portion that models a three-dimensional object by laminating material layers formed by a material having a fluid property, and executes a first modeling process that forms concave portions, which are adjacent to two or more convex portions and are recessed in comparison with the convex portions in a lamination direction in which material layers are laminated, as a result of forming a plurality of convex portions that project in the lamination direction, a second modeling process that laminates a material layer on the convex portions, and forms a material layer, which is spatially separated from the material layer laminated on the convex portions, inside the concave portions, and a third modeling process that fills the concave portions with a material layer by disposing the material on the material layer inside the concave portions.Type: ApplicationFiled: September 7, 2017Publication date: March 15, 2018Inventors: Masaya ISHIDA, Eiji OKAMOTO, Akihiko TSUNOYA
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Publication number: 20180029125Abstract: A three-dimensional shaped article shaping stage, which is used in a three-dimensional shaped article production apparatus for producing a three-dimensional shaped article by stacking layers to form a stacked body, has a forming surface on which the stacked body is to be formed, and is formed into a porous structure using a high-melting point material having a higher melting point than a constituent material of the three-dimensional shaped article, is used. By using such a shaping stage, it becomes possible to suppress deformation of the stacked body of the three-dimensional shaped article formed by stacking layers on the shaping stage accompanying degreasing or sintering of the stacked body.Type: ApplicationFiled: July 11, 2017Publication date: February 1, 2018Inventors: Eiji OKAMOTO, Akihiko TSUNOYA, Masaya ISHIDA
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Publication number: 20180029124Abstract: A three-dimensional shaped article shaping stage, which is used in a three-dimensional shaped article production apparatus for producing a three-dimensional shaped article by stacking layers to form a stacked body, is attachable to and detachable from the production apparatus, has a forming surface on which the stacked body is to be formed, and in which an organic film having a lower melting point than a constituent material is formed on the forming surface, is used. By using such a shaping stage, it becomes possible to easily separate the stacked body of the three-dimensional shaped article formed by stacking layers on the shaping stage from the shaping stage.Type: ApplicationFiled: July 10, 2017Publication date: February 1, 2018Inventors: Eiji OKAMOTO, Masaya ISHIDA, Akihiko TSUNOYA
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Publication number: 20170252970Abstract: A three-dimensional shaped article production method is a method for producing a three-dimensional shaped article by stacking layers and includes a layer formation step of forming each layer in a predetermined pattern by ejecting a liquid droplet of a composition containing particles and a solvent using a dispenser, a measurement step of determining the height of the layer, and a bonding step of subjecting a stacked body including a plurality of layers to a bonding treatment for bonding the particles, wherein when n represents an arbitrary integer of 1 or more, based on the information of the height of the layer in the n-th position (n-th layer) determined in the measurement step, the number of liquid droplets of the composition per unit area to be ejected onto the n-th layer from the dispenser is adjusted in the layer formation step of forming the layer in the (n+1)th position ((n+1)th layer).Type: ApplicationFiled: February 24, 2017Publication date: September 7, 2017Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
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Publication number: 20170252977Abstract: A three-dimensional shaped article production method includes a layer formation step of forming a layer by ejecting a composition containing particles and a solvent in a predetermined pattern using a dispenser, a measurement step of determining the height of the layer, and a bonding step of subjecting a stacked body including a plurality of layers to a bonding treatment for bonding the particles, wherein when n represents an arbitrary integer of 1 or more, by selecting driving waveform data for the dispenser when ejecting the composition from a data group including a plurality of pieces of driving waveform data based on the information of the height of the layer in the n-th position (n-th layer) determined in the measurement step, the ejection amount of the composition per unit area onto the n-th layer in the layer formation step of forming the layer in the (n+1)th position ((n+1)th layer) is adjusted.Type: ApplicationFiled: February 24, 2017Publication date: September 7, 2017Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
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Publication number: 20170252969Abstract: A three-dimensional shaped article production method according to the invention includes a step of forming a layer by ejecting a composition containing particles using a dispenser, a step of determining the height of the layer, wherein a stacked body includes a layer which has a first portion corresponding to a portion to become an actual body part of the three-dimensional shaped article to be formed using an actual body part forming composition, and a second portion corresponding to a portion to become a sacrificial part to be formed using a sacrificial part forming composition, the supply amount of the sacrificial part forming composition to be ejected onto the second portion of the n-th layer in the step of forming the (n+1)th layer is adjusted based on the information of the height of the surface of the second portion of the n-th layer.Type: ApplicationFiled: February 24, 2017Publication date: September 7, 2017Inventors: Akihiko TSUNOYA, Eiji OKAMOTO
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Patent number: 9242498Abstract: With the printing method according to the above described aspect of the present invention, when first ink and second ink made of resin are placed on a printing medium, a first dot for which a first ink droplet land on the printing medium and a plurality of second dots for which a plurality of second ink droplets land on the printing medium are in contact, but adjacent ones of the second dots are separated from each other. With this printing method, the first ink is high in stretchability, and the glass transition point when the second ink is cured is higher than the glass transition point when the first ink is cured.Type: GrantFiled: July 25, 2012Date of Patent: January 26, 2016Assignee: Seiko Epson CorporationInventors: Akihiko Tsunoya, Keigo Sugai, Yoshikazu Hama
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Patent number: 9044970Abstract: A recording method includes a liquid substance discharge step of discharging a liquid substance from a discharge head toward a predetermined section of sections of the recording medium, and a radiation step of radiating light toward the liquid substance discharged on the recording medium. The liquid substance discharge step and the radiation step are performed n times, with n being an integer of 2 or greater, on the predetermined section to complete recording on the predetermined section while moving the discharge head and the recording medium relative to each other. In the n liquid substance discharge steps, with a recording rate of a first liquid substance discharge step being denoted by a % and a recording rate of a final liquid substance discharge step being denoted by b %, a>b.Type: GrantFiled: February 10, 2014Date of Patent: June 2, 2015Assignee: Seiko Epson CorporationInventor: Akihiko Tsunoya
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Publication number: 20140152751Abstract: A recording method includes a liquid substance discharge step of discharging a liquid substance from a discharge head toward a predetermined section of sections of the recording medium, and a radiation step of radiating light toward the liquid substance discharged on the recording medium. The liquid substance discharge step and the radiation step are performed n times, with n being an integer of 2 or greater, on the predetermined section to complete recording on the predetermined section while moving the discharge head and the recording medium relative to each other. In the n liquid substance discharge steps, with a recording rate of a first liquid substance discharge step being denoted by a % and a recording rate of a final liquid substance discharge step being denoted by b %, a>b.Type: ApplicationFiled: February 10, 2014Publication date: June 5, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Akihiko TSUNOYA
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Patent number: 8684513Abstract: A recording method is for recording on a recording medium with a photocuring liquid substance by discharging droplets from a discharge head onto the recording medium while displacing the discharge head and the recording medium relative to each other. While the discharge head and the recording medium are displaced relative to each other, a droplet discharge step of discharging the droplets from the discharge head toward a predetermined section of the recording medium, and a radiation step of radiating the light toward the droplets discharged on the recording medium, are performed n (n being an integer of 2 or greater) times on the predetermined section to complete recording on the predetermined section, and the recording rate in the nth discharge step is lowered below 100%/n.Type: GrantFiled: January 31, 2012Date of Patent: April 1, 2014Assignee: Seiko Epson CorporationInventor: Akihiko Tsunoya
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Publication number: 20130027488Abstract: With the printing method according to the above described aspect of the present invention, when first ink and second ink made of resin are placed on a printing medium, a first dot for which a first ink droplet land on the printing medium and a plurality of second dots for which a plurality of second ink droplets land on the printing medium are in contact, but adjacent ones of the second dots are separated from each other. With this printing method, the first ink is high in stretchability, and the glass transition point when the second ink is cured is higher than the glass transition point when the first ink is cured.Type: ApplicationFiled: July 25, 2012Publication date: January 31, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Akihiko TSUNOYA, Keigo SUGAI, Yoshikazu HAMA
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Publication number: 20120308791Abstract: There are provided an ink set, printed matter, and a molded article, with which a first ink and a second ink are applied over a substrate in the form of a sheet, for example, and which lends itself well to processing of this coated surface. An ink set 10 includes first inks 1Y, 1C, 1M, and 1K containing a pigment as a colorant, and a second ink containing no pigment. Films of the first inks 1Y, 1C, 1M, and 1K each stretch at least 70% when cured into the film with a thickness of 5 ?m and the film is stretched under a 150° C. environment. A film of the second ink has an elastic modulus of no more than 200 MPa when the second ink is cured into the film with a thickness of 50 to 200 ?m.Type: ApplicationFiled: June 4, 2012Publication date: December 6, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Akihiko TSUNOYA, Keigo SUGAI, Yoshikazu HAMA
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Publication number: 20120298036Abstract: A liquid droplet discharging device includes a stage section, a discharge head, a moving section, a maintenance device and a testing device. The stage section is configured and arranged to retain a substrate. The discharge head has a nozzle for discharging a liquid droplet of a liquid onto the substrate. The moving section supports the discharge head to move integrally with the discharge head relative to the stage section. The maintenance device is configured and arranged to perform a predetermined maintenance process on the discharge head. The testing device is configured and arranged to test liquid droplet discharge characteristics of the nozzle. The maintenance device and the testing devices are disposed at opposite sides in a direction of relative movement of the moving section and the stage section, with the stage section being disposed therebetween.Type: ApplicationFiled: May 16, 2012Publication date: November 29, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Masahiko OGAWA, Tsuneo HANDA, Akihiko TSUNOYA
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Publication number: 20120200652Abstract: A recording method is for recording on a recording medium with a photocuring liquid substance by discharging droplets from a discharge head onto the recording medium while displacing the discharge head and the recording medium relative to each other. While the discharge head and the recording medium are displaced relative to each other, a droplet discharge step of discharging the droplets from the discharge head toward a predetermined section of the recording medium, and a radiation step of radiating the light toward the droplets discharged on the recording medium, are performed n (n being an integer of 2 or greater) times on the predetermined section to complete recording on the predetermined section, and the recording rate in the nth discharge step is lowered below 100%/n.Type: ApplicationFiled: January 31, 2012Publication date: August 9, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Akihiko TSUNOYA
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Patent number: 8173050Abstract: A conductive pattern formation ink which can be stably ejected in the form of liquid droplets and form a conductive pattern having high reliability, a conductive pattern having high reliability, and a wiring substrate provided with the conductive pattern and having high reliability are provided. The conductive pattern formation ink is used for forming a conductive pattern by ejecting the ink in the form of liquid droplets on a surface of a ceramic molded body using a liquid droplet ejecting method, the ceramic molded body being made of a material containing ceramic particles and a binder. The ink contains a water-based dispersion medium, and metal particles dispersed in the water-based dispersion medium, wherein the water-based dispersion medium contains oxygen molecules and nitrogen molecules, and wherein when the water-based dispersion medium is analyzed using a gas chromatography method, a total amount of the oxygen and nitrogen molecules contained in the water-based dispersion medium is 12 ppm or less.Type: GrantFiled: December 10, 2008Date of Patent: May 8, 2012Assignee: Seiko Epson CorporationInventors: Naoyuki Toyoda, Toshiyuki Kobayashi, Sachiko Endo, Noboru Uehara, Akihiko Tsunoya
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Publication number: 20110159207Abstract: A method for producing a build-up substrate containing two layers of wiring patterns that are separated from each other with an insulating film intervening therebetween and are electrically connected to each other at a contact part penetrating through the insulating film, includes: ejecting a liquid repelling agent having repellency to an ink for forming the insulating film from a liquid droplet ejecting head onto one of the wiring patterns, thereby forming a liquid repelling part; then ejecting the ink for forming the insulating film from a liquid droplet ejecting head onto portions on the wiring pattern except for the liquid repelling part provided, thereby forming the insulating film; then removing the liquid repelling part; and then forming the contact part and the other of the wiring patterns by electroless plating.Type: ApplicationFiled: December 20, 2010Publication date: June 30, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Tomoyuki KAMAKURA, Akihiko TSUNOYA
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Publication number: 20090145638Abstract: A conductive pattern formation ink which can be stably ejected in the form of liquid droplets and form a conductive pattern having high reliability, a conductive pattern having high reliability, and a wiring substrate provided with the conductive pattern and having high reliability are provided. The conductive pattern formation ink is used for forming a conductive pattern by ejecting the ink in the form of liquid droplets on a surface of a ceramic molded body using a liquid droplet ejecting method, the ceramic molded body being made of a material containing ceramic particles and a binder. The ink contains a water-based dispersion medium, and metal particles dispersed in the water-based dispersion medium, wherein the water-based dispersion medium contains oxygen molecules and nitrogen molecules, and wherein when the water-based dispersion medium is analyzed using a gas chromatography method, a total amount of the oxygen and nitrogen molecules contained in the water-based dispersion medium is 12 ppm or less.Type: ApplicationFiled: December 10, 2008Publication date: June 11, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Naoyuki Toyoda, Toshiyuki Kobayashi, Sachiko Endo, Noboru Uehara, Akihiko Tsunoya