Patents by Inventor Shintaro ASAI
Shintaro ASAI 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: 12291641Abstract: A metal pigment composition of the present disclosure is a coloring composition or a composition to be used for preparation of the coloring composition and includes: a metal pigment; a polyoxyalkyleneamine compound; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent is at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2) (A-R—O)aP(O)(OH)3-a??(1) (A-R)P(O)(OH)2??(2).Type: GrantFiled: January 28, 2022Date of Patent: May 6, 2025Assignee: SEIKO EPSON CORPORATIONInventors: Hiroaki Kida, Shintaro Asai, Kei Hiruma, Tomoyuki Ushiyama, Mitsunobu Nakatani, Kenta Tsukada
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Patent number: 12264250Abstract: A coloring composition of the present disclosure includes a metal pigment; an acrylic-based resin having an acid value of 200 mgKOH/g or less; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).Type: GrantFiled: January 28, 2022Date of Patent: April 1, 2025Assignee: SEIKO EPSON CORPORATIONInventors: Shintaro Asai, Hiroaki Kida, Kei Hiruma, Tomoyuki Ushiyama, Mitsunobu Nakatani, Kenta Tsukada
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Patent number: 12109812Abstract: An ink jet printing method includes a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from an ink jet head to apply the metallic ink composition onto a printing medium, a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater, and a coloring ink application step of ejecting a coloring ink composition containing a coloring material from an ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium. Each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink.Type: GrantFiled: July 30, 2021Date of Patent: October 8, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Tomoyuki Ushiyama, Kei Hiruma, Hiroaki Kida, Shintaro Asai, Masaru Terada, Mitsunobu Nakatani
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Publication number: 20240327623Abstract: The molding material of the present disclosure includes a cellulose fiber and a specific cellulose derivative in which a part of the hydrogen atoms constituting the hydroxy groups of cellulose is substituted with a chemical structure represented by the following formula (1) or (3) and another part of the hydrogen atoms is substituted with a chemical structure represented by the following formula (2) or (4), wherein the content of the cellulose fiber is 50 mass % or more and 70 mass % or less.Type: ApplicationFiled: March 27, 2024Publication date: October 3, 2024Inventors: Shinobu YOKOKAWA, Shintaro ASAI, Hirofumi HOKARI, Atsushi YAMADA
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Publication number: 20240327620Abstract: The molding material of the present disclosure includes a cellulose fiber and a specific cellulose derivative in which a part of the hydrogen atoms constituting the hydroxy groups of cellulose is substituted with a chemical structure represented by the following formula (1) and another part of the hydrogen atoms is substituted with a chemical structure represented by the following formula (2), wherein the content of the cellulose fiber is 50 mass % or more and 70 mass % or less.Type: ApplicationFiled: March 28, 2024Publication date: October 3, 2024Inventors: Shinobu YOKOKAWA, Shintaro ASAI, Hirofumi HOKARI, Atsushi YAMADA, Toshihiro OTAKE
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Patent number: 11999180Abstract: A recording method of the present disclosure, which is a recording method of performing recording on a recording medium by using a recording device including an ink jet head, includes ejecting a composition for ink jet from the ink jet head, in which the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of scaly metal particles, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less.Type: GrantFiled: December 27, 2021Date of Patent: June 4, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Kei Hiruma, Hiroshi Takiguchi, Masaru Terada, Shintaro Asai, Hiroaki Kida, Tomoyuki Ushiyama
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Publication number: 20230312959Abstract: Provided is an ink jet ink composition which is a solvent-based ink, the composition including a metal pigment, a polyoxyalkylene amine compound, and an organic solvent, in which the metal pigment is a metal particle having a surface treated with a surface treatment agent, the surface treatment agent is a compound represented by Formula (1) or Formula (2), the polyoxyalkylene amine compound includes a compound represented by Formula (3), and the compound represented by Formula (3) is formed such that an average of m/(m+n)×100 (%) is 20% or greater. (R1—)P(O)(OH)2??(1) (R2—O—)aP(O)(OH)3-a??(2) (In Formulae (1) and (2), R1 and R2 each independently represent a hydrocarbon group having 14 or more carbon atoms which may be substituted with a substituent, and a represents 1 or 2.Type: ApplicationFiled: March 29, 2023Publication date: October 5, 2023Inventors: Hiroaki KIDA, Shintaro ASAI
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Publication number: 20230312958Abstract: Provided is a recording method including an adhesion step of jetting an ink composition from an ink jet head and making the ink composition adhere to a recording medium, and a primary heating step of heating the recording medium in the adhesion step, in which the adhesion step includes a step in which a jetting frequency of the ink composition is 15 kHz or greater, the ink composition contains a metal pigment and a solvent component, the solvent component contains an organic solvent, and the metal pigment is a metal particle that has a scaly shape and has a surface treated with a compound represented by Formula (1) or Formula (2). (R1—)P(O)(OH)2??(1) (R2—O—)aP(O)(OH)3?a??(2) (In the formulae, R1 and R2 each independently represent a hydrocarbon group having 14 or more carbon atoms which may be substituted with a substituent, and a represents 1 or 2.Type: ApplicationFiled: March 29, 2023Publication date: October 5, 2023Inventors: Hiroaki KIDA, Shintaro ASAI, Kei HIRUMA, Tomoyuki USHIYAMA, Mitsunobu NAKATANI, Kenta TSUKADA
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Publication number: 20230272235Abstract: According to an embodiment of the present disclosure, provided is an ink jet ink composition which is a solvent-based ink, the composition including a metal pigment and an organic solvent, in which the metal pigment is a metal particle having a surface treated with a surface treatment agent, the surface treatment agent contains a compound represented by General Formula (1) and a compound represented by General Formula (2), and a mass ratio of a mass of the compound represented by General Formula (2) to a total mass of the compound represented by General Formula (1) and the compound represented by General Formula (2) is 45% by mass or less. (R—O—)P(O)(OH)2??(1) (R—O—)2P(O)(OH)??(2) (In the formulae, R's each independently represent a hydrocarbon group having 8 or more carbon atoms.Type: ApplicationFiled: February 27, 2023Publication date: August 31, 2023Inventors: Shintaro ASAI, Hiroaki KIDA, Kei HIRUMA, Tomoyuki USHIYAMA, Mitsunobu NAKATANI, Kenta TSUKADA
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Publication number: 20220243081Abstract: A coloring composition of the present disclosure includes a metal pigment; an acrylic-based resin having an acid value of 200 mgKOH/g or less; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).Type: ApplicationFiled: January 28, 2022Publication date: August 4, 2022Inventors: Shintaro ASAI, Hiroaki KIDA, Kei HIRUMA, Tomoyuki USHIYAMA, Mitsunobu NAKATANI, Kenta TSUKADA
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Publication number: 20220243080Abstract: A metal pigment composition of the present disclosure is a coloring composition or a composition to be used for preparation of the coloring composition and includes: a metal pigment; a polyoxyalkyleneamine compound; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent is at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).Type: ApplicationFiled: January 28, 2022Publication date: August 4, 2022Inventors: Hiroaki KIDA, Shintaro ASAI, Kei HIRUMA, Tomoyuki USHIYAMA, Mitsunobu NAKATANI, Kenta TSUKADA
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Publication number: 20220204787Abstract: An ink jet ink composition containing a metal pigment, and a liquid medium component, in which the metal pigment is made of a metal particle, the metal particle is surface-modified with a surface treatment agent, the surface treatment agent is at least one selected from the group consisting of a compound represented by formula (1) below and a compound represented by formula (2) below, and the ink jet ink composition is a water-based ink or a solvent-based ink: (R—O)aP(O)(OH)3-a ??(1) (R)P(O)(OH)2 ??(2) where R is independently a hydrocarbon group having a carbon skeleton having 13 or more carbon atoms, and a is 1 or 2.Type: ApplicationFiled: December 27, 2021Publication date: June 30, 2022Inventors: Hiroaki KIDA, Shintaro ASAI, Kei HIRUMA, Tomoyuki USHIYAMA, Mitsunobu NAKATANI, Kenta TSUKADA, Masaru TERADA
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Publication number: 20220203740Abstract: A recording method of the present disclosure, which is a recording method of performing recording on a recording medium by using a recording device including an ink jet head, includes ejecting a composition for ink jet from the ink jet head, in which the composition for ink jet contains a metal pigment, the metal pigment is formed of a plurality of scaly metal particles, the ink jet head includes a circulation flow path for circulating the composition for ink jet, and an average thickness of the metal particles determined by atomic force microscopy is 19 nm or less.Type: ApplicationFiled: December 27, 2021Publication date: June 30, 2022Inventors: Kei HIRUMA, Hiroshi TAKIGUCHI, Masaru TERADA, Shintaro ASAI, Hiroaki KIDA, Tomoyuki USHIYAMA
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Publication number: 20220032618Abstract: An ink jet printing method includes a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from an ink jet head to apply the metallic ink composition onto a printing medium, a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater, and a coloring ink application step of ejecting a coloring ink composition containing a coloring material from an ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium. Each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink.Type: ApplicationFiled: July 30, 2021Publication date: February 3, 2022Inventors: Tomoyuki USHIYAMA, Kei HIRUMA, Hiroaki KIDA, Shintaro ASAI, Masaru TERADA, Mitsunobu NAKATANI
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Publication number: 20210095142Abstract: An ink jet composition according to the present disclosure contains a plurality of metal particles, a hydrophobic phosphorus surface treatment agent, a polyoxyalkyleneamine compound, and a solvent. The amount of the contained polyoxyalkyleneamine compound is 0.5 parts by mass to 50 parts by mass per 100 parts by mass of the metal particles.Type: ApplicationFiled: September 29, 2020Publication date: April 1, 2021Inventors: Hiroshi TAKIGUCHI, Hiroaki KIDA, Kei HIRUMA, Tomoyuki USHIYAMA, Masaru TERADA, Shintaro ASAI, Mitsunobu NAKATANI
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Patent number: 10953681Abstract: An ink jet composition of the invention is discharged by an ink jet method and includes: metal powder; an organic solvent; and a resin having a styrene-maleic acid structure as a binder resin, in which the ink jet composition contains metal powder surface-treated with a fluorine-based compound as the metal powder.Type: GrantFiled: March 28, 2019Date of Patent: March 23, 2021Inventors: Hiroshi Takiguchi, Hiroaki Kida, Shintaro Asai, Masaru Terada, Naoyuki Toyoda
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Publication number: 20190300732Abstract: An ink jet composition of the invention is discharged by an ink jet method and includes: metal powder; an organic solvent; and a resin having a styrene-acrylic acid structure as a binder resin, in which the ink jet composition contains metal powder surface-treated with a fluorine-based compound as the metal powder.Type: ApplicationFiled: March 28, 2019Publication date: October 3, 2019Inventors: Hiroaki KIDA, Hiroshi TAKIGUCHI, Shintaro ASAI, Masaru TERADA, Naoyuki TOYODA
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Publication number: 20190300733Abstract: An ink jet composition of the invention is discharged by an ink jet method and includes: metal powder; an organic solvent; and a resin having a styrene-maleic acid structure as a binder resin, in which the ink jet composition contains metal powder surface-treated with a fluorine-based compound as the metal powder.Type: ApplicationFiled: March 28, 2019Publication date: October 3, 2019Inventors: Hiroshi TAKIGUCHI, Hiroaki KIDA, Shintaro ASAI, Masaru TERADA, Naoyuki TOYODA