Patents by Inventor Yohei Hamade
Yohei Hamade 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: 9273187Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.Type: GrantFiled: May 22, 2015Date of Patent: March 1, 2016Assignee: Canon Kabushiki KaishaInventors: Etsuko Sawada, Hiroaki Mihara, Ken Ikegame, Satoshi Tsutsui, Yohei Hamade
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Publication number: 20160054655Abstract: In at least one embodiment of a method for forming a pattern having a hollow structure, a light-absorbing layer capable of absorbing light is formed on a surface of a photosensitive resin film. Subsequently, a substrate having a protrusion and the photosensitive resin film are bonded together so that the protrusion and the light-absorbing layer come into contact with each other. Then, the photosensitive resin film and the light-absorbing layer are patterned at one time by photolithography.Type: ApplicationFiled: August 12, 2015Publication date: February 25, 2016Inventors: Yohei Hamade, Shoji Shiba
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Publication number: 20160052270Abstract: In an inkjet recording head comprising a substrate including an energy-generating element that generates energy for ejecting a liquid, an ejection port for ejecting the liquid, and a liquid flow passage communicating with the ejection port, a liquid-repellent layer is formed on a surface of a member for forming the ejection port, and a liquid-repellent region and a liquid-nonrepellent region are formed on the same surface of the liquid-repellent layer by irradiating a part of the liquid-repellent layer with light including a wavelength decomposing the liquid-repellent component in the liquid-repellent layer.Type: ApplicationFiled: August 18, 2015Publication date: February 25, 2016Inventors: Satoshi Tsutsui, Yohei Hamade
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Patent number: 9150697Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.Type: GrantFiled: April 17, 2013Date of Patent: October 6, 2015Assignee: Canon Kabushiki KaishaInventors: Etsuko Sawada, Hiroaki Mihara, Ken Ikegame, Satoshi Tsutsui, Yohei Hamade
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Publication number: 20150251419Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.Type: ApplicationFiled: May 22, 2015Publication date: September 10, 2015Inventors: Etsuko Sawada, Hiroaki Mihara, Ken Ikegame, Satoshi Tsutsui, Yohei Hamade
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Patent number: 9044944Abstract: A liquid discharge head includes a substrate including an energy generating element that generates energy used to discharge liquid and a discharge port member having a discharge port surface with a discharge port line including discharge ports, through which the liquid is discharged, arrayed in a first direction. The discharge port surface includes a groove portion disposed between the discharge port line and a first end of the discharge port member in a second direction intersecting the first direction. The groove portion extends along the discharge port line. The discharge port surface further includes an inclined surface disposed between an end of the discharge port line and a second end of the discharge port member in the first direction. The inclined surface is inclined toward the second end.Type: GrantFiled: April 14, 2014Date of Patent: June 2, 2015Assignee: Canon Kabushiki KaishaInventors: Atsushi Omura, Shuichi Murakami, Toshikazu Nagatsuka, Keiji Tomizawa, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Patent number: 9029074Abstract: Provided is a method of water repellent treatment for a pattern surface, the method including the steps of agitatingly mixing a perfluoropolyether-group-containing silane water repellent, an organic acid, a fluorine-containing solvent capable of dissolving the perfluoropolyether-group-containing silane water repellent and the organic acid, and water to hydrolyze the perfluoropolyether-group-containing silane water repellent, thereby obtaining a partial hydrolysate solution; forming a photosensitive resin layer on a substrate; applying the partial hydrolysate solution onto the photosensitive resin layer to form a water-repellent film; performing patterning exposure to the photosensitive resin layer and the water-repellent film; performing heat treatment to collectively cure an exposed portion of the photosensitive resin layer and the water-repellent film; and removing a non-exposed portion of the photosensitive resin layer and the water-repellent film by development treatment to form a pattern.Type: GrantFiled: February 25, 2014Date of Patent: May 12, 2015Assignee: Canon Kabushiki KaishaInventors: Yohei Hamade, Etsuko Sawada, Ken Ikegame, Hiroaki Mihara, Satoshi Tsutsui
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Publication number: 20150116427Abstract: Provided is a sealant for use in ink jet recording heads, comprising a cationically polymerizable resin; a fluorine-containing compound that is liquid at a temperature in a range of 20° C.±15° C.; and a cationic polymerization initiator.Type: ApplicationFiled: October 6, 2014Publication date: April 30, 2015Inventors: Satoshi Tsutsui, Etsuko Sawada, Yohei Hamade
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Patent number: 9004630Abstract: There is provided an inkjet printing apparatus which can perform stable ejection also in successive printing at high speed even in a case of performing printing in use of a print head provided with an ejection opening surface having hydrophilic properties. The inkjet printing apparatus comprises an inkjet print head wherein the control unit controls the print head such that, in a case where the ejection number of the ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied for the preliminary ejection operation is larger than a drive energy amount that is supplied for the preliminary ejection operation in a case where the ejection number is less than the threshold.Type: GrantFiled: May 14, 2013Date of Patent: April 14, 2015Assignee: Canon Kabushiki KaishaInventors: Toshikazu Nagatsuka, Shuichi Murakami, Keiji Tomizawa, Atsushi Omura, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Publication number: 20150077470Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.Type: ApplicationFiled: April 17, 2013Publication date: March 19, 2015Inventors: Etsuko Sawada, Hiroaki Mihara, Ken Ikegame, Satoshi Tsutsui, Yohei Hamade
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Publication number: 20150062249Abstract: Provided is a liquid discharge head comprising a discharge port-forming member having discharge ports for discharging a liquid and having a surface provided with a liquid-repellent film. The liquid-repellent film includes a layer containing a resin composition containing at least one of polyurethane and polyrotaxane disposed on the discharge port-forming member and a layer containing a fluorine compound and having a thickness of 10 nm or less disposed on the resin composition-containing layer. When a scratch-forming tool, a diamond tip having a tip diameter of 15 ?m, is pressed onto the liquid-repellent film with a load of 0.098 N (10 gf) and is reciprocated ten times, the depth of a scratch formed on the surface of the liquid-repellent film is smaller than the thickness of the fluorine compound-containing layer.Type: ApplicationFiled: September 3, 2014Publication date: March 5, 2015Inventors: Yohei Hamade, Etsuko Sawada, Satoshi Tsutsui
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Patent number: 8957151Abstract: Provided are a liquid-repellent film in which the aggregation of a liquid-repellent material is suppressed and which is excellent in liquid-repellent properties and a production method therefor, and a fine structure using the liquid-repellent film and a production method therefor. The liquid-repellent film is a liquid-repellent film formed of a silane compound having a specific perfluoropolyether group and a fluorine-containing acrylic homopolymer.Type: GrantFiled: February 4, 2013Date of Patent: February 17, 2015Assignee: Canon Kabushiki KaishaInventors: Satoshi Tsutsui, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Publication number: 20140311661Abstract: A process for producing a liquid ejection head having a substrate and an ejection orifice forming member having an ejection orifice for ejecting liquid, including forming, on the substrate, a photocationically polymerizable resin layer which includes a photocationically polymerizable resin material and becomes the ejection orifice forming member; laminating, on the uncured photocationically polymerizable resin layer, a layer containing a condensation product of a hydrolyzable silane compound having a cationically polymerizable epoxy group and a hydrolyzable silane compound having a fluorine-containing group; laminating a water-repellent layer including a hydrolyzable silane compound having a perfluoropolyether group on the condensation-product-containing layer; subjecting the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer to pattern exposure; collectively curing exposed portions of the photocationically polymerizable resin layer, condensation-prodType: ApplicationFiled: April 1, 2014Publication date: October 23, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Satoshi Tsutsui, Etsuko Sawada, Ken Ikegame, Hiroaki Mihara, Yohei Hamade
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Publication number: 20140307028Abstract: A liquid discharge head includes a substrate including an energy generating element that generates energy used to discharge liquid and a discharge port member having a discharge port surface with a discharge port line including discharge ports, through which the liquid is discharged, arrayed in a first direction. The discharge port surface includes a groove portion disposed between the discharge port line and a first end of the discharge port member in a second direction intersecting the first direction. The groove portion extends along the discharge port line. The discharge port surface further includes an inclined surface disposed between an end of the discharge port line and a second end of the discharge port member in the first direction. The inclined surface is inclined toward the second end.Type: ApplicationFiled: April 14, 2014Publication date: October 16, 2014Inventors: Atsushi Omura, Shuichi Murakami, Toshikazu Nagatsuka, Keiji Tomizawa, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Publication number: 20140309329Abstract: Provided is a water-repellent antifouling coating material including a condensation product obtained by condensing hydrolyzable silane compounds. The hydrolyzable silane compounds include (a) a hydrolyzable silane compound having a perfluoropolyether group; (b) a hydrolyzable silane compound having an epoxy group; and (c) a hydrolyzable silane compound having a fluorine-containing group other than perfluoropolyether groups.Type: ApplicationFiled: March 26, 2014Publication date: October 16, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Etsuko Sawada, Satoshi Tsutsui, Yohei Hamade, Hiroaki Mihara, Ken Ikegame
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Publication number: 20140272725Abstract: Provided is a method of water repellent treatment for a pattern surface, the method including the steps of agitatingly mixing a perfluoropolyether-group-containing silane water repellent, an organic acid, a fluorine-containing solvent capable of dissolving the perfluoropolyether-group-containing silane water repellent and the organic acid, and water to hydrolyze the perfluoropolyether-group-containing silane water repellent, thereby obtaining a partial hydrolysate solution; forming a photosensitive resin layer on a substrate; applying the partial hydrolysate solution onto the photosensitive resin layer to form a water-repellent film; performing patterning exposure to the photosensitive resin layer and the water-repellent film; performing heat treatment to collectively cure an exposed portion of the photosensitive resin layer and the water-repellent film; and removing a non-exposed portion of the photosensitive resin layer and the water-repellent film by development treatment to form a pattern.Type: ApplicationFiled: February 25, 2014Publication date: September 18, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yohei Hamade, Etsuko Sawada, Ken Ikegame, Hiroaki Mihara, Satoshi Tsutsui
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Patent number: 8622516Abstract: Provided is an ink jet recording head, including multiple ejection orifices for ejecting droplets to a recording medium, in which a normal of a plane formed of the following straight lines is tilted with respect to an axis line of each of the ejection orifices: a straight line obtained by connecting points, which are positioned on peripheries of the respective ejection orifices and are at shortest distances from a face plane, in a longitudinal direction of an ejection orifice array; and a straight line obtained by connecting points, which are positioned on the peripheries of the respective ejection orifices and are at longest distances from the face plane, in the longitudinal direction of the ejection orifice array.Type: GrantFiled: September 6, 2011Date of Patent: January 7, 2014Assignee: Canon Kabushiki KaishaInventor: Yohei Hamade
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Publication number: 20130307889Abstract: There is provided an inkjet printing apparatus which can perform stable ejection also in successive printing at high speed even in a case of performing printing in use of a print head provided with an ejection opening surface having hydrophilic properties. The inkjet printing apparatus comprises an inkjet print head wherein the control unit controls the print head such that, in a case where the ejection number of the ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied for the preliminary ejection operation is larger than a drive energy amount that is supplied for the preliminary ejection operation in a case where the ejection number is less than the threshold.Type: ApplicationFiled: May 14, 2013Publication date: November 21, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Toshikazu Nagatsuka, Shuichi Murakami, Keiji Tomizawa, Atsushi Omura, Etsuko Sawada, Hiroaki Mihara, Yohei Hamade
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Patent number: 8343712Abstract: A method for manufacturing an inkjet recording includes forming a photo-cationic polymerizable resin layer containing a photo-cationic polymerizable resin material on a substrate; performing pattern exposure of the photo-cationic polymerizable resin layer to form a latent image of a fine pattern including an ejection port; forming a water repellent layer containing a water repellent material capable of forming a bond in reaction with the photo-cationic polymerizable resin material on the photo-cationic polymerizable resin layer; developing the photo-cationic polymerizable resin layer to thereby remove a non-exposed portion of the photo-cationic polymerizable resin layer and remove a water repellent layer portion corresponding to the non-exposed portion to thereby form the fine pattern; and curing the photo-cationic polymerizable resin layer by heat treatment to form a member provided with the fine pattern and promote a reaction of the photo-cationic polymerizable resin material and the water repellent materiaType: GrantFiled: October 24, 2011Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Yohei Hamade, Etsuko Sawada, Hiroaki Mihara, Satoshi Tsutsui
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Publication number: 20120107746Abstract: A method for manufacturing an inkjet recording includes forming a photo-cationic polymerizable resin layer containing a photo-cationic polymerizable resin material on a substrate; performing pattern exposure of the photo-cationic polymerizable resin layer to form a latent image of a fine pattern including an ejection port; forming a water repellent layer containing a water repellent material capable of forming a bond in reaction with the photo-cationic polymerizable resin material on the photo-cationic polymerizable resin layer; developing the photo-cationic polymerizable resin layer to thereby remove a non-exposed portion of the photo-cationic polymerizable resin layer and remove a water repellent layer portion corresponding to the non-exposed portion to thereby form the fine pattern; and curing the photo-cationic polymerizable resin layer by heat treatment to form a member provided with the fine pattern and promote a reaction of the photo-cationic polymerizable resin material and the water repellent materiaType: ApplicationFiled: October 24, 2011Publication date: May 3, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yohei Hamade, Etsuko Sawada, Hiroaki Mihara, Satoshi Tsutsui