Patents by Inventor Daisuke Sakuma
Daisuke Sakuma 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: 12729482Abstract: A set according to an embodiment of the present disclosure includes a treatment solution composition that contains particles containing organopolysiloxane and water, and an ink jet ink composition that contains a pigment and water, in which in a ratio of a static surface tension of the ink jet ink composition to a static surface tension of the treatment solution composition, the static surface tension of the treatment solution composition is from 1.0 to 1.5 when the static surface tension of the ink jet ink composition is set to 1, the static surface tension of the treatment solution composition is from 25 to 40 mN/m, and the treatment solution composition and the ink jet ink composition are discharged by an ink jet method and used.Type: GrantFiled: May 31, 2024Date of Patent: September 8, 2026Assignee: SEIKO EPSON CORPORATIONInventors: Tasuku Nakamura, Ryota Miyasa, Daisuke Sakuma, Akiko Yamada, Kosuke Chidate
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Patent number: 12691680Abstract: An ink jet recording method including a first ink attachment step of discharging an ink composition containing a self-dispersing pigment by an ink jet method to attach the ink composition to a fabric, a reaction liquid attachment step of discharging a reaction liquid composition containing an aggregating agent that aggregates components of the ink composition by an ink jet method to attach the reaction liquid composition to the fabric, and a second ink attachment step of discharging an ink composition containing a self-dispersing pigment by an ink jet method to attach the ink composition to the fabric, in which the first ink attachment step, the reaction liquid attachment step, and the second ink attachment step are continuously performed in this order, a time difference from when the ink composition is attached by the first ink attachment step to when the reaction liquid composition is attached to a region to which the ink composition is attached by the reaction liquid attachment step is within 45 milliseconType: GrantFiled: May 31, 2024Date of Patent: July 28, 2026Assignee: SEIKO EPSON CORPORATIONInventor: Daisuke Sakuma
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Patent number: 12630973Abstract: A recording method according to an embodiment of the present disclosure is a recording method on a fabric, including an ink adhering step of adhering droplets of an ink composition containing a pigment and resin particles to the fabric; and a treatment solution adhering step of adhering droplets of a treatment solution containing a crosslinking agent to the fabric, in which a maximum weight per droplet of the droplet of the ink composition is 30 ng or less, a maximum weight per droplet of the droplet of the treatment solution is 30 ng or less, and a droplet weight of the treatment solution is equal to or less than a droplet weight of the ink composition.Type: GrantFiled: February 28, 2023Date of Patent: May 19, 2026Assignee: SEIKO EPSON CORPORATIONInventors: Akiko Yamada, Kosuke Chidate, Daisuke Sakuma, Takamitsu Kondo
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Patent number: 12545800Abstract: A reaction liquid for pigment printing contains a polyvalent metal salt, a cationic polymer, a polyhydric alcohol, an alkali, and water. The alkali is an amine compound, and the reaction liquid is used by ejecting it by ink jet technology.Type: GrantFiled: August 17, 2023Date of Patent: February 10, 2026Assignee: SEIKO EPSON CORPORATIONInventor: Daisuke Sakuma
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Publication number: 20260033670Abstract: A heating and cooking apparatus HC that heats and cooks food to be heated and cooked by combusting a fuel gas, which includes: burners each of which has a tubular and elongated burner body, and multiple burner ports opened at intervals in each burner body in a longitudinal direction; infrared radiation members each of which is disposed opposite a corresponding burner body, each infrared radiation member being elongated in the longitudinal direction of each burner body and radiating infrared by being heated; and thermocouples each of which detects a flame generated when the fuel gas is supplied to each burner, ejects from each burner port, and is combusted. Even when the heating and cooking apparatus is configured such that hydrogen as the fuel gas, ejecting from each burner port, is diffused and combusted, a yield strength of each thermocouple cannot be reduced, and hydrogen flame can be detected reliably.Type: ApplicationFiled: May 17, 2023Publication date: February 5, 2026Applicant: RINNAI CORPORATIONInventors: Shusaku HAYASHI, Takahiro ONO, Hiroyuki IKUTA, Daisuke SAKUMA, Akira KANO, Takaaki TAKAHASHI, Koichi HIRATA
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Patent number: 12492783Abstract: The present embodiment is a tank having a liner and a first protective layer disposed on an outer peripheral surface of the liner and configured such that a resin-impregnated fiber bundle including a reinforcing fiber bundle and a first matrix resin is wound around the liner, wherein the resin-impregnated fiber bundle has a folded portion fixed in a bent state at a winding end portion of the resin-impregnated fiber bundle.Type: GrantFiled: June 7, 2023Date of Patent: December 9, 2025Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Numata, Takuya Sukeda, Daisuke Sakuma, Hiroyuki Ishii
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Patent number: 12473452Abstract: A reaction solution for pigment printing according to an embodiment of the present disclosure contains a polyvalent metal salt, a cationic polymer, a polyhydric alcohol having a standard boiling point of 250° C. or higher, and water, and is used by being ejected by an ink jet method.Type: GrantFiled: March 2, 2023Date of Patent: November 18, 2025Assignee: SEIKO EPSON CORPORATIONInventors: Daisuke Sakuma, Akiko Yamada
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Patent number: 12454143Abstract: A printing recording method includes: a chromatic ink adhesion step of adhering a liquid droplet of a chromatic ink composition which contains a pigment and an anionic first resin particle to a cloth; a treatment liquid adhesion step of adhering a liquid droplet of a treatment liquid which contains a cationic compound to the cloth; and an achromatic ink adhesion step of adhering a liquid droplet of an achromatic ink composition which contains an anionic second resin particle to the cloth.Type: GrantFiled: March 30, 2023Date of Patent: October 28, 2025Assignee: SEIKO EPSON CORPORATIONInventors: Akiko Yamada, Takamitsu Kondo, Daisuke Sakuma, Kosuke Chidate
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Publication number: 20250297425Abstract: There is provided an ink jet recording method that includes a treatment liquid adhesion step of adhering a treatment liquid containing an organic acid and water to any place on a fabric by an ink jet method; a colored ink adhesion step of adhering a liquid droplet of a colored ink composition containing a pigment, an anionic first resin particle, and water to the any place by the ink jet method; and a transparent ink adhesion step of adhering a liquid droplet of a transparent ink composition containing an anionic second resin particle and water to the any place by the ink jet method. In the treatment liquid adhesion step, an amount of an acidic group derived from the organic acid adhering to the any place is 4.5 mmol/m2 or more, and a shortest time difference |?| between adhesion of one of the colored ink composition and the treatment liquid composition to the any place and subsequent adhesion of another of the colored ink composition and the treatment liquid composition to the any place is within 5 min.Type: ApplicationFiled: March 24, 2025Publication date: September 25, 2025Inventor: Daisuke SAKUMA
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Publication number: 20240399742Abstract: An ink jet recording method including a first ink attachment step of discharging an ink composition containing a self-dispersing pigment by an ink jet method to attach the ink composition to a fabric, a reaction liquid attachment step of discharging a reaction liquid composition containing an aggregating agent that aggregates components of the ink composition by an ink jet method to attach the reaction liquid composition to the fabric, and a second ink attachment step of discharging an ink composition containing a self-dispersing pigment by an ink jet method to attach the ink composition to the fabric, in which the first ink attachment step, the reaction liquid attachment step, and the second ink attachment step are continuously performed in this order, a time difference from when the ink composition is attached by the first ink attachment step to when the reaction liquid composition is attached to a region to which the ink composition is attached by the reaction liquid attachment step is within 45 milliseconType: ApplicationFiled: May 31, 2024Publication date: December 5, 2024Inventor: Daisuke SAKUMA
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Publication number: 20240401268Abstract: A recording method including a softening liquid attachment step of attaching a softening liquid composition containing a softening agent and water to a recording medium, and a coating liquid attachment step of attaching a coating liquid composition containing anionic resin particles and water to the recording medium, in which a content of the softening agent is 60% by mass or more with respect to a total amount of non-volatile components in the softening liquid composition, a content of the resin particles is 80% by mass or more with respect to a total amount of non-volatile components in the coating liquid composition, the coating liquid attachment step is performed by an ink jet method, and the softening liquid attachment step is performed by an ink jet method or a spray method.Type: ApplicationFiled: May 31, 2024Publication date: December 5, 2024Inventors: Ryota MIYASA, Daisuke SAKUMA, Kosuke CHIDATE, Akiko YAMADA
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Publication number: 20240401267Abstract: A set according to an embodiment of the present disclosure includes a treatment solution composition that contains particles containing organopolysiloxane and water, and an ink jet ink composition that contains a pigment and water, in which in a ratio of a static surface tension of the ink jet ink composition to a static surface tension of the treatment solution composition, the static surface tension of the treatment solution composition is from 1.0 to 1.5 when the static surface tension of the ink jet ink composition is set to 1, the static surface tension of the treatment solution composition is from 25 to 40 mN/m, and the treatment solution composition and the ink jet ink composition are discharged by an ink jet method and used.Type: ApplicationFiled: May 31, 2024Publication date: December 5, 2024Inventors: Tasuku NAKAMURA, Ryota MIYASA, Daisuke SAKUMA, Akiko YAMADA, Kosuke CHIDATE
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Publication number: 20240294791Abstract: An ink jet treatment liquid composition for pigment textile printing including a particle containing organopolysiloxane, a water-soluble organic solvent having an SP value of 12.5 or less, and water, in which a content of the particle containing the organopolysiloxane is 7% by mass or more with respect to a total amount of the treatment liquid composition.Type: ApplicationFiled: March 1, 2024Publication date: September 5, 2024Inventors: Daisuke SAKUMA, Ryota MIYASA
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Patent number: 12077671Abstract: An ink jet ink composition contains a color material, an organic solvent, and water. The ink jet ink composition contains N-hydroxyethylpyrrolidone and N-vinyl-2-pyrrolidone as the organic solvent.Type: GrantFiled: March 29, 2021Date of Patent: September 3, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Yasuhiro Oki, Daisuke Sakuma, Hidehiko Komatsu, Shintaro Hama
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Patent number: 12059916Abstract: A textile printing method for printing on a fabric, the fabric being a nonwoven fabric containing synthetic fibers. includes a first adhering step of adhering to the fabric by ejecting a dyeing ink by an ink jet method, and a second adhering step of adhering a non-dyeing ink to the fabric. The dyeing ink contains a disperse dye, a water-soluble organic solvent, and water, and the non-dyeing ink contains a water-soluble organic solvent and water. The water-soluble organic solvent contained in the non-dyeing ink contains a glycol-based organic solvent having a HSP value of 13.6 or more, and the content of the glycol-based organic solvent is 80% by mass or more relative to the total amount of the organic solvent contained in the non-dyeing ink. The adhesion position of the dyeing ink and the adhesion position of the non-dyeing ink are at least partially overlapped each other.Type: GrantFiled: September 29, 2021Date of Patent: August 13, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Yasuhiro Oki, Yoshitaka Miyajima, Daisuke Sakuma, Hiromi Noguchi
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Publication number: 20240059924Abstract: A reaction liquid for pigment printing contains a polyvalent metal salt, a cationic polymer, a polyhydric alcohol, an alkali, and water. The alkali is an amine compound, and the reaction liquid is used by ejecting it by ink jet technology.Type: ApplicationFiled: August 17, 2023Publication date: February 22, 2024Inventor: Daisuke SAKUMA
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Publication number: 20240044451Abstract: The present embodiment is a tank having a liner and a first protective layer disposed on an outer peripheral surface of the liner and configured such that a resin-impregnated fiber bundle including a reinforcing fiber bundle and a first matrix resin is wound around the liner, wherein the resin-impregnated fiber bundle has a folded portion fixed in a bent state at a winding end portion of the resin-impregnated. fiber bundle.Type: ApplicationFiled: June 7, 2023Publication date: February 8, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke NUMATA, Takuya SUKEDA, Daisuke SAKUMA, Hiroyuki ISHII
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Publication number: 20240042652Abstract: The present embodiment is a method of recycling reinforcing fibers, the method comprising: providing a tank having at least a first protective layer disposed on an outer peripheral surface of a liner and a liner, the first protective layer being configured such that a resin-impregnated fiber bundle including a reinforcing fiber bundle and a first matrix resin is wound around the liner; and a second protective layer formed of the first matrix resin on the first protective layer; removing a portion of the second protective layer to expose a winding end portion of the resin-impregnated fiber bundle; peeling the exposed winding end portion; and pulling the peeled winding end portion to draw out the resin-impregnated fiber bundle.Type: ApplicationFiled: May 30, 2023Publication date: February 8, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke NUMATA, Takuya SUKEDA, Daisuke SAKUMA, Hiroyuki ISHII
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Patent number: 11827797Abstract: An ink jet ink for textile printing contains a reactive dye, where 1.2% by mass or more and 2.3% by mass or less of C.I. Reactive Blue 49 based on the total amount of the ink is contained as the reactive dye.Type: GrantFiled: October 30, 2019Date of Patent: November 28, 2023Inventors: Daisuke Sakuma, Hiroaki Maruyama, Hidehiko Komatsu
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Publication number: 20230347675Abstract: A printing recording method includes: a chromatic ink adhesion step of adhering a liquid droplet of a chromatic ink composition which contains a pigment and an anionic first resin particle to a cloth; a treatment liquid adhesion step of adhering a liquid droplet of a treatment liquid which contains a cationic compound to the cloth; and an achromatic ink adhesion step of adhering a liquid droplet of an achromatic ink composition which contains an anionic second resin particle to the cloth.Type: ApplicationFiled: March 30, 2023Publication date: November 2, 2023Inventors: Akiko YAMADA, Takamitsu KONDO, Daisuke SAKUMA, Kosuke CHIDATE