Patents by Inventor Isamu Horiuchi
Isamu Horiuchi 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: 11667808Abstract: A hydrophilic coating material including an alginate compound having a bond with a silane compound is used. The material is produced by reacting a water-soluble alginate compound and a silane compound and then by adding a divalent metal ion to an alginic acid-derived carboxyl group in the reaction product.Type: GrantFiled: June 23, 2020Date of Patent: June 6, 2023Assignee: Canon Kabushiki KaishaInventors: Yohei Hamade, Satoshi Tsutsui, Isamu Horiuchi, Kazunari Ishizuka, Miho Ishii
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Patent number: 11485136Abstract: A liquid discharge head including: a substrate having a liquid supply port; a flow channel forming member that is provided on the substrate and has discharge ports for discharging a liquid and a liquid flow channel that makes the liquid supply port and the discharge ports communicate with each other; and a support member that is provided on the substrate and arranged to be in contact with at least one surface of the flow channel forming member, with the one surface not being in contact with the liquid, wherein the flow channel forming member includes a cured product of a first photosensitive resin composition including a photosensitive resin, the support member includes a cured product of a second photosensitive resin composition including the epoxy resin A having a structure represented by formula (a1) or (a2) below in main chain structure: where, n1 and n2 represent integers of at least 2.Type: GrantFiled: January 20, 2021Date of Patent: November 1, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Kazunari Ishizuka, Satoshi Tsutsui, Yohei Hamade, Isamu Horiuchi, Miho Ishii
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Patent number: 11433674Abstract: A liquid discharge head comprising a substrate comprising a liquid feeding port and an energy generating element for liquid discharge, and a flow channel member comprising, on the substrate, a discharge port through which a liquid is discharged and a liquid flow channel communicating with both the liquid feeding port and the discharge port, wherein the flow channel member comprises a flow channel member (1) not comprising a surface in contact with the liquid and a flow channel member (2) comprising a surface in contact with the liquid, a film stress S1 and S2 of the flow channel members (1) and (2), respectively, satisfy S1<S2, a film thickness L1 and L2 of the flow channel member (1) and (2), respectively, in a direction perpendicular to the substrate, satisfy L1<L2, and satisfying 470 MPa·?m<[L1×S1+(L2?L1)×S2]<1200 MPa·?m.Type: GrantFiled: January 15, 2021Date of Patent: September 6, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Isamu Horiuchi, Kazunari Ishizuka, Satoshi Tsutsui, Yohei Hamade, Miho Ishii
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Patent number: 11426999Abstract: A liquid discharge head is provided which has a substrate, a flow channel forming member provided on a substrate surface of the substrate and forming a flow channel of a liquid, and a discharge port forming member provided on the flow channel forming member and having a discharge port through which a liquid is discharged, wherein the discharge port forming member and the flow channel forming member are formed of materials different from each other, a thickness of the flow channel forming member is greater than a thickness of the discharge port forming member in a direction perpendicular to the substrate surface, the discharge port forming member is a cured product of a photosensitive resin composition, and the flow channel forming member contains at least one resin selected from the group consisting of a polyether amide resin, a polyether imide resin and a polyether amide-imide resin.Type: GrantFiled: December 21, 2020Date of Patent: August 30, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Satoshi Tsutsui, Kazunari Ishizuka, Isamu Horiuchi, Yohei Hamade, Miho Ishii
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Patent number: 11384251Abstract: A hydrophilic coating material including an alginic acid compound and a resin, in which the alginic acid compound is granulated and dispersed in the resin. In a coating film using the material, it is preferred that the granulated alginic acid compound is exposed on the surface. Such a hydrophilic coating film is suitable as a hydrophilization treatment film of a nozzle face surface of an inkjet recording head.Type: GrantFiled: June 24, 2020Date of Patent: July 12, 2022Assignee: Canon Kabushiki KaishaInventors: Yohei Hamade, Satoshi Tsutsui, Isamu Horiuchi, Kazunari Ishizuka, Miho Ishii
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Publication number: 20210229437Abstract: A liquid discharge head including: a substrate having a liquid supply port; a flow channel forming member that is provided on the substrate and has discharge ports for discharging a liquid and a liquid flow channel that makes the liquid supply port and the discharge ports communicate with each other; and a support member that is provided on the substrate and arranged to be in contact with at least one surface of the flow channel forming member, with the one surface not being in contact with the liquid, wherein the flow channel forming member includes a cured product of a first photosensitive resin composition including a photosensitive resin, the support member includes a cured product of a second photosensitive resin composition including the epoxy resin A having a structure represented by formula (a1) or (a2) below in main chain structure: where, n1 and n2 represent integers of at least 2.Type: ApplicationFiled: January 20, 2021Publication date: July 29, 2021Inventors: Kazunari Ishizuka, Satoshi Tsutsui, Yohei Hamade, Isamu Horiuchi, Miho Ishii
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Publication number: 20210223693Abstract: A photoresist composition is provided, which comprises a cationic polymerization resin, a resin A, a photoacid generator, and a solvent, wherein the resin A comprises at least one resin selected from the group consisting of polyester resins and polyether resins and is soluble in a ketone-based organic solvent.Type: ApplicationFiled: December 28, 2020Publication date: July 22, 2021Inventors: Yohei Hamade, Satoshi Tsutsui, Isamu Horiuchi, Kazunari Ishizuka, Miho Ishii
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Publication number: 20210221137Abstract: A liquid discharge head comprising a substrate comprising a liquid feeding port and an energy generating element for liquid discharge, and a flow channel member comprising, on the substrate, a discharge port through which a liquid is discharged and a liquid flow channel communicating with both the liquid feeding port and the discharge port, wherein the flow channel member comprises a flow channel member (1) not comprising a surface in contact with the liquid and a flow channel member (2) comprising a surface in contact with the liquid, a film stress S1 and S2 of the flow channel members (1) and (2), respectively, satisfy S1<S2, a film thickness L1 and L2 of the flow channel member (1) and (2), respectively, in a direction perpendicular to the substrate, satisfy L1<L2, and satisfying 470 MPa·?m<[L1×S1+(L2?L1)×S2]<1200 MPa·?m.Type: ApplicationFiled: January 15, 2021Publication date: July 22, 2021Inventors: Isamu Horiuchi, Kazunari Ishizuka, Satoshi Tsutsui, Yohei Hamade, Miho Ishii
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Publication number: 20210213738Abstract: A liquid discharge head is provided which has a substrate, a flow channel forming member provided on a substrate surface of the substrate and forming a flow channel of a liquid, and a discharge port forming member provided on the flow channel forming member and having a discharge port through which a liquid is discharged, wherein the discharge port forming member and the flow channel forming member are formed of materials different from each other, a thickness of the flow channel forming member is greater than a thickness of the discharge port forming member in a direction perpendicular to the substrate surface, the discharge port forming member is a cured product of a photosensitive resin composition, and the flow channel forming member contains at least one resin selected from the group consisting of a polyether amide resin, a polyether imide resin and a polyether amide-imide resin.Type: ApplicationFiled: December 21, 2020Publication date: July 15, 2021Inventors: Satoshi Tsutsui, Kazunari Ishizuka, Isamu Horiuchi, Yohei Hamade, Miho Ishii
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Publication number: 20210031523Abstract: Provided is a method for manufacturing a liquid ejection head including an ejection orifice for ejecting a liquid, a substrate and a flow path forming member that is joined to the substrate to form a liquid flow path communicating with the ejection orifice, the method including: (1) forming a resin layer having a flow path mold pattern, on the substrate; (2) adding a hydrophilizing material represented by Chemical Formula 1 to an entire surface layer of the resin layer; (3) forming a covering resin layer serving as the flow path forming member, on the resin layer and forming a compatible layer containing the resin layer, the covering resin layer and the hydrophilizing material, at an interface between the resin layer and the covering resin layer; (4) forming the ejection orifice by exposing the covering resin layer; and (5) forming a flow path by removing the resin layer.Type: ApplicationFiled: July 22, 2020Publication date: February 4, 2021Inventors: Kazunari Ishizuka, Isamu Horiuchi, Satoshi Tsutsui, Yohei Hamade, Miho Ishii
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Publication number: 20200407589Abstract: A hydrophilic coating material including an alginate compound having a bond with a silane compound is used. The material is produced by reacting a water-soluble alginate compound and a silane compound and then by adding a divalent metal ion to an alginic acid-derived carboxyl group in the reaction product.Type: ApplicationFiled: June 23, 2020Publication date: December 31, 2020Inventors: Yohei Hamade, Satoshi Tsutsui, Isamu Horiuchi, Kazunari Ishizuka, Miho Ishii
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Publication number: 20200407583Abstract: A hydrophilic coating material including an alginic acid compound and a resin, in which the alginic acid compound is granulated and dispersed in the resin. In a coating film using the material, it is preferred that the granulated alginic acid compound is exposed on the surface. Such a hydrophilic coating film is suitable as a hydrophilization treatment film of a nozzle face surface of an inkjet recording head.Type: ApplicationFiled: June 24, 2020Publication date: December 31, 2020Inventors: Yohei Hamade, Satoshi Tsutsui, Isamu Horiuchi, Kazunari Ishizuka, Miho Ishii
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Publication number: 20200209742Abstract: Provided is a method of producing a microstructure including: forming a resin layer from a photosensitive resin composition on a substrate; exposing the resin layer to a microstructure pattern to form a cured portion as a result of the exposure and an uncured portion as a result of non-exposure; and removing the uncured portion from the substrate through development to provide a microstructure pattern having the cured portion, wherein the photosensitive resin composition to be used contains an epoxy resin, a crosslinking agent containing a polyhydric alcohol that is bifunctional or trifunctional with respect to a terminal hydroxy group, and that is free of a perfluoroalkyl group and a perfluoroalkylene group, a photoacid generator, and a solvent.Type: ApplicationFiled: December 20, 2019Publication date: July 2, 2020Inventors: Satoshi Tsutsui, Kazunari Ishizuka, Isamu Horiuchi, Yohei Hamade, Miho Ishii
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Patent number: 10265960Abstract: A method for manufacturing a liquid ejection head includes forming a first negative photosensitive resin layer containing a photopolymerizable compound and a photopolymerization initiator over a substrate, exposing the first negative photosensitive resin layer to light to form a latent image of a flow channel member, forming a second negative photosensitive resin layer containing a photopolymerizable compound and a photopolymerization initiator over the first negative photosensitive resin layer having the latent image, and exposing the second negative photosensitive resin layer to light to form a latent image of an ejection opening member. The first negative photosensitive resin layer has a thickness of 10 ?m or less and further contains a sensitivity adjusting agent capable of reducing the sensitivity of the first negative photosensitive resin layer. The transmittance A of the first negative photosensitive resin layer is 0.70 or less for the exposure light for the second negative photosensitive resin layer.Type: GrantFiled: April 17, 2018Date of Patent: April 23, 2019Assignee: Canon Kabushiki KaishaInventor: Isamu Horiuchi
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Patent number: 10189253Abstract: A liquid ejection head includes a substrate; and an ejection orifice-forming member formed on the substrate and including an ejection orifice configured to eject liquid and a liquid channel communicating with the ejection orifice. The ejection orifice-forming member includes an ejection orifice-forming member layer A, an intermediate water-repellent layer, and an ejection orifice-forming member layer B in this order from a substrate-side of the member. The ejection orifice-forming member also includes a protrusion protruding into the ejection orifice, and the ejection orifice-forming member includes a water-repellent projection portion that is at least a portion of the intermediate water-repellent layer and that projects farther into the ejection orifice than the ejection orifice-forming member layer A and the ejection orifice-forming member layer B.Type: GrantFiled: September 18, 2017Date of Patent: January 29, 2019Assignee: Canon Kabushiki KaishaInventor: Isamu Horiuchi
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Publication number: 20180304632Abstract: A method for manufacturing a liquid ejection head includes forming a first negative photosensitive resin layer containing a photopolymerizable compound and a photopolymerization initiator over a substrate, exposing the first negative photosensitive resin layer to light to form a latent image of a flow channel member, forming a second negative photosensitive resin layer containing a photopolymerizable compound and a photopolymerization initiator over the first negative photosensitive resin layer having the latent image, and exposing the second negative photosensitive resin layer to light to form a latent image of an ejection opening member. The first negative photosensitive resin layer has a thickness of 10 ?m or less and further contains a sensitivity adjusting agent capable of reducing the sensitivity of the first negative photosensitive resin layer. The transmittance A of the first negative photosensitive resin layer is 0.70 or less for the exposure light for the second negative photosensitive resin layer.Type: ApplicationFiled: April 17, 2018Publication date: October 25, 2018Inventor: Isamu Horiuchi
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Publication number: 20180086080Abstract: A liquid ejection head includes a substrate; and an ejection orifice-forming member formed on the substrate and including an ejection orifice configured to eject liquid and a liquid channel communicating with the ejection orifice. The ejection orifice-forming member includes an ejection orifice-forming member layer A, an intermediate water-repellent layer, and an ejection orifice-forming member layer B in this order from a substrate-side of the member. The ejection orifice-forming member also includes a protrusion protruding into the ejection orifice, and the ejection orifice-forming member includes a water-repellent projection portion that is at least a portion of the intermediate water-repellent layer and that projects farther into the ejection orifice than the ejection orifice-forming member layer A and the ejection orifice-forming member layer B.Type: ApplicationFiled: September 18, 2017Publication date: March 29, 2018Inventor: Isamu Horiuchi
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Patent number: 9599893Abstract: A production process for an optically shaped product, including applying a photosensitive resin composition in a form of a dry film on to a substrate in which a hole opening to a surface thereof is formed so as to cover the hole and performing patterning to form an optically shaped product, wherein the photosensitive resin composition contains a resin comprising a tri- or higher functional epoxy resin and a bifunctional epoxy resin, the bifunctional epoxy resin has a weight-average molecular weight (Mw) of 5,500 to 60,000, the resin has a weight-average molecular weight (Mw) ranging from 4,500 to 11,000, and the mixing ratio by mass between the tri- or higher functional epoxy resin and the bifunctional epoxy resin satisfies (b)/(a)?1.5, where (a) is the mass of the tri- or higher functional epoxy resin, and (b) is the mass of the bifunctional epoxy resin.Type: GrantFiled: August 18, 2015Date of Patent: March 21, 2017Assignee: CANON KABUSHIKI KAISHAInventor: Isamu Horiuchi
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Publication number: 20160091789Abstract: A production process for an optically shaped product, including applying a photosensitive resin composition in a form of a dry film on to a substrate in which a hole opening to a surface thereof is formed so as to cover the hole and performing patterning to form an optically shaped product, wherein the photosensitive resin composition contains a resin comprising a tri- or higher functional epoxy resin and a bifunctional epoxy resin, the bifunctional epoxy resin has a weight-average molecular weight (Mw) of 5,500 to 60,000, the resin has a weight-average molecular weight (Mw) ranging from 4,500 to 11,000, and the mixing ratio by mass between the tri- or higher functional epoxy resin and the bifunctional epoxy resin satisfies (b)/(a)?1.5, where (a) is the mass of the tri- or higher functional epoxy resin, and (b) is the mass of the bifunctional epoxy resin.Type: ApplicationFiled: August 18, 2015Publication date: March 31, 2016Inventor: Isamu Horiuchi
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Patent number: 9139005Abstract: A liquid ejection head includes a substrate on a surface of which an energy-generating element for generating energy for ejecting liquid is formed; and a flow path forming member formed on the substrate, the flow path forming member forming an ejection orifice for ejecting the liquid and a liquid flow path communicating with the ejection orifice. The flow path forming member includes, at a position surrounding the liquid flow path, a depression that opens to an upper surface of the flow path forming member and a groove that opens to the first depression. The angle between the upper surface of the flow path forming member and a slope surface of the depression on the flow path forming member side is an obtuse angle. The groove has a serrated side wall.Type: GrantFiled: February 12, 2014Date of Patent: September 22, 2015Assignee: Canon Kabushiki KaishaInventors: Kyosuke Nagaoka, Isamu Horiuchi