Patents by Inventor Mitsunori Toshishige
Mitsunori Toshishige 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: 20240066871Abstract: A method for manufacturing a flow path member includes bringing a flexible member into contact with a first substrate including a recessed portion via an adhesive agent so as to cover the recessed portion, wherein the flexible member is configured to suppress vibrations of a liquid in a flow path, curing the adhesive agent in a state where at least an area of the flexible member covering the recessed portion is supported by a support member, bonding a second substrate to a side of the first substrate with which the flexible member is brought into contact, wherein the second substrate is configured to form the flow path facing the flexible member, and removing the support member from the flexible member in a period after the curing and before the bonding.Type: ApplicationFiled: August 28, 2023Publication date: February 29, 2024Inventors: KENJI TAMAMORI, TETSUSHI ISHIKAWA, MITSUNORI TOSHISHIGE
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Patent number: 11623442Abstract: In a substrate, a first flow channel opened in a first surface of a silicon base material having a crystal orientation of <110>, and a second flow channel opened in a second surface of the silicon base material opposite the first surface are formed to communicate with each other. The second flow channel has an opening width narrower than an opening width of the first flow channel, and a groove portion shallower than a depth of the second flow channel is formed close to the opening of the second flow channel in a region that is inside the opening of the first flow channel and outside the opening of the second flow channel in the second surface.Type: GrantFiled: July 16, 2021Date of Patent: April 11, 2023Assignee: CANON KABUSHIKI KAISHAInventor: Mitsunori Toshishige
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Publication number: 20230008405Abstract: Provided is a method of manufacturing a substrate including an alignment mark, including: forming the alignment mark and a recess portion on the substrate, the alignment mark not penetrating the substrate and including a bottom portion with a lower infrared transmittance than that of a first surface and a second surface of the substrate; and aligning the substrate by orthogonally arranging predetermined positions of the first surface and the second surface of the substrate in a horizontal direction and an infrared ray camera and by image-identifying the alignment mark formed on the substrate with transmitted light of infrared rays emitted from the infrared ray camera.Type: ApplicationFiled: July 5, 2022Publication date: January 12, 2023Inventors: Mitsunori Toshishige, Yoshiyuki Fukumoto
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Patent number: 11518170Abstract: A method of manufacturing a liquid discharge head includes preparing a first substrate where a discharge port configured to discharge liquid is formed to face a first surface, a concave portion is formed on a side of a second surface opposite to the first surface, and a first liquid flow passage penetrating from the first surface to the second surface is opened inside the concave portion on the side of the second surface, preparing a second substrate including a second liquid flow passage opened on a third surface, and sticking the first substrate and the second substrate to communicate the first liquid flow passage with the second liquid flow passage by bonding a bottom face of the concave portion and the third surface with an adhesive agent.Type: GrantFiled: April 7, 2020Date of Patent: December 6, 2022Assignee: Canon Kabushiki KaishaInventors: Mitsunori Toshishige, Souta Takeuchi
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Publication number: 20220032620Abstract: In a substrate, a first flow channel opened in a first surface of a silicon base material having a crystal orientation of <110>, and a second flow channel opened in a second surface of the silicon base material opposite the first surface are formed to communicate with each other. The second flow channel has an opening width narrower than an opening width of the first flow channel, and a groove portion shallower than a depth of the second flow channel is formed close to the opening of the second flow channel in a region that is inside the opening of the first flow channel and outside the opening of the second flow channel in the second surface.Type: ApplicationFiled: July 16, 2021Publication date: February 3, 2022Inventor: MITSUNORI TOSHISHIGE
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Patent number: 11161342Abstract: A liquid discharge head includes a recording element substrate including a discharge port configured to discharge a liquid, a pressure generating element configured to pressurize the liquid to discharge the liquid, and an electric connecting portion connected to the pressure generating element through an electric wiring and configured to supply power for driving the pressure generating element to the pressure generating element. The liquid discharge head includes a first recessed portion and a second recessed portion formed in a range from a back surface of a discharge port surface in which the discharge port of the recording element substrate is formed up to the electric connecting portion, and a communicating portion configured to connect a space formed within the first recessed portion and a space formed within the second recessed portion by allowing the first recessed portion and the second recessed portion to communicate with each other.Type: GrantFiled: August 8, 2019Date of Patent: November 2, 2021Assignee: Canon Kabushiki KaishaInventors: Mitsunori Toshishige, Noriyasu Ozaki, Shiro Sujaku
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Publication number: 20200338892Abstract: A method of manufacturing a liquid discharge head includes preparing a first substrate where a discharge port configured to discharge liquid is formed to face a first surface, a concave portion is formed on a side of a second surface opposite to the first surface, and a first liquid flow passage penetrating from the first surface to the second surface is opened inside the concave portion on the side of the second surface, preparing a second substrate including a second liquid flow passage opened on a third surface, and sticking the first substrate and the second substrate to communicate the first liquid flow passage with the second liquid flow passage by bonding a bottom face of the concave portion and the third surface with an adhesive agent.Type: ApplicationFiled: April 7, 2020Publication date: October 29, 2020Inventors: Mitsunori Toshishige, Souta Takeuchi
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Patent number: 10744770Abstract: A liquid ejection head is equipped with a substrate having therethrough a supply path to be supplied with a liquid, a top plate placed opposite to the substrate, having an ejection orifice for ejecting the liquid and constituting, between the top plate and the substrate, a flow path communicated with the supply path and the ejection orifice and a columnar member extending from the top plate to the inside of the supply path through the flow path. An end surface of the columnar member positioned in the supply path is tilted relative to the top plate in a direction away from the ejection orifice.Type: GrantFiled: June 28, 2019Date of Patent: August 18, 2020Assignee: Canon Kabushiki KaishaInventors: Mitsunori Toshishige, Kenji Takahashi, Shiro Sujaku, Daisuke Otsuka
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Publication number: 20200061995Abstract: A liquid discharge head includes a recording element substrate including a discharge port configured to discharge a liquid, a pressure generating element configured to pressurize the liquid to discharge the liquid, and an electric connecting portion connected to the pressure generating element through an electric wiring and configured to supply power for driving the pressure generating element to the pressure generating element. The liquid discharge head includes a first recessed portion and a second recessed portion formed in a range from a back surface of a discharge port surface in which the discharge port of the recording element substrate is formed up to the electric connecting portion, and a communicating portion configured to connect a space formed within the first recessed portion and a space formed within the second recessed portion by allowing the first recessed portion and the second recessed portion to communicate with each other.Type: ApplicationFiled: August 8, 2019Publication date: February 27, 2020Inventors: Mitsunori Toshishige, Noriyasu Ozaki, Shiro Sujaku
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Publication number: 20200009863Abstract: A liquid ejection head is equipped with a substrate having therethrough a supply path to be supplied with a liquid, a top plate placed opposite to the substrate, having an ejection orifice for ejecting the liquid and constituting, between the top plate and the substrate, a flow path communicated with the supply path and the ejection orifice and a columnar member extending from the top plate to the inside of the supply path through the flow path. An end surface of the columnar member positioned in the supply path is tilted relative to the top plate in a direction away from the ejection orifice.Type: ApplicationFiled: June 28, 2019Publication date: January 9, 2020Inventors: Mitsunori Toshishige, Kenji Takahashi, Shiro Sujaku, Daisuke Otsuka
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Publication number: 20190263124Abstract: A liquid ejection head substrate that includes a nozzle plate provided with an ejection orifice adapted to eject liquid droplets, in which a projection/depression pattern is provided on a liquid droplet ejection surface of the nozzle plate, the projection/depression pattern being made up of a plurality of projections and depressions, the projections being separated by depressions 1 ?m or less in depth and disposed at predetermined spacing 10 ?m or less in length; and the projection/depression pattern includes a part having water repellency due to lotus effect.Type: ApplicationFiled: February 20, 2019Publication date: August 29, 2019Inventors: Kenji Takahashi, Mitsuru Chida, Mitsunori Toshishige, Shiro Sujaku, Kenji Kumamaru, Noriyasu Ozaki, Makoto Terui, Seiko Minami
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Patent number: 8329047Abstract: The present invention provides a method for producing a liquid discharge head including a silicon substrate having, on a first surface, energy generating elements, and a supply port penetrating the substrate from the first surface to a second surface, which is a rear surface of the first surface of the substrate. The method includes the steps of: preparing the silicon substrate having a sacrifice layer at a portion on the first surface where the ink supply port is to be formed and an etching mask layer having a plurality of openings on the second surface, the volume of a portion of the sacrifice layer at a position corresponding to a portion between two adjacent said openings being smaller than the volume of a portion of the sacrifice layer at a position corresponding to the opening; etching the silicon substrate from the plurality of openings and etching the sacrifice layer.Type: GrantFiled: December 10, 2009Date of Patent: December 11, 2012Assignee: Canon Kabushiki KaishaInventors: Tadanobu Nagami, Junichi Kobayashi, Takeshi Terada, Makoto Watanabe, Hiroyuki Abo, Mitsunori Toshishige, Yoshinori Tagawa, Shuji Koyama, Kenji Fujii, Masaki Ohsumi, Jun Yamamuro, Hiroyuki Murayama, Yoshinobu Urayama, Taichi Yonemoto
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Patent number: 8323519Abstract: A method for manufacturing a liquid discharge head including a flow path forming member to form a flow path communicating with a discharge port for discharging liquids includes forming an organic material layer on a substrate, applying a soluble resin on the organic material layer to form a resin layer, patterning the resin layer to form a pattern with a shape of the flow path, forming a cover layer as the flow path forming member on the pattern, forming the discharge port to expose a part of the pattern from the cover layer, eluting the pattern from the discharge port to form the flow path, irradiating a substance sticking to a surface of the flow path forming member on which the discharge port is formed with ultraviolet light, wherein the substance contains at least the organic material, and removing the sticking substance.Type: GrantFiled: June 19, 2008Date of Patent: December 4, 2012Assignee: Canon Kabushiki KaishaInventors: Mitsunori Toshishige, Yoshinori Tagawa, Hideo Tamura, Taichi Yonemoto
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Patent number: 8047632Abstract: An ink jet recording head includes an ejection outlet for ejecting ink; an energy generating element, provided on a silicon substrate, for generating energy for ejecting the ink from the ejection outlet; an ink flow passage, provided correspondingly to the energy generating element, communicating with the ejection outlet; a through hole passing through the silicon substrate; and an ink supply port for supplying the ink supplied into the through hole to the ink flow passage. The ink supply port is formed with an extended member which contacts a bottom of a flow passage wall constituting the ink flow passage and extends into an opening of the through hole.Type: GrantFiled: February 27, 2009Date of Patent: November 1, 2011Assignee: Canon Kabushiki KaishaInventors: Kenji Fujii, Yoshinori Tagawa, Hiroyuki Murayama, Taichi Yonemoto, Mitsunori Toshishige, Keiji Watanabe
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Publication number: 20100147793Abstract: The present invention provides a method for producing a liquid discharge head including a silicon substrate having, on a first surface, energy generating elements, and a supply port penetrating the substrate from the first surface to a second surface, which is a rear surface of the first surface of the substrate. The method includes the steps of: preparing the silicon substrate having a sacrifice layer at a portion on the first surface where the ink supply port is to be formed and an etching mask layer having a plurality of openings on the second surface, the volume of a portion of the sacrifice layer at a position corresponding to a portion between two adjacent said openings being smaller than the volume of a portion of the sacrifice layer at a position corresponding to the opening; etching the silicon substrate from the plurality of openings and etching the sacrifice layer.Type: ApplicationFiled: December 10, 2009Publication date: June 17, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Tadanobu Nagami, Junichi Kobayashi, Takeshi Terada, Makoto Watanabe, Hiroyuki Abo, Mitsunori Toshishige, Yoshinori Tagawa, Shuji Koyama, Kenji Fujii, Masaki Ohsumi, Jun Yamamuro, Hiroyuki Murayama, Yoshinobu Urayama, Taichi Yonemoto
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Publication number: 20090225136Abstract: An ink jet recording head includes an ejection outlet for ejecting ink; an energy generating element, provided on a silicon substrate, for generating energy for ejecting the ink from the ejection outlet; an ink flow passage, provided correspondingly to the energy generating element, communicating with the ejection outlet; a through hole passing through the silicon substrate; and an ink supply port for supplying the ink supplied into the through hole to the ink flow passage. The ink supply port is formed with an extended member which contacts a bottom of a flow passage wall constituting the ink flow passage and extends into an opening of the through hole.Type: ApplicationFiled: February 27, 2009Publication date: September 10, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Fujii, Yoshinori Tagawa, Hiroyuki Murayama, Taichi Yonemoto, Mitsunori Toshishige, Keiji Watanabe
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Publication number: 20080317971Abstract: A method for manufacturing a liquid discharge head including a flow path forming member to form a flow path communicating with a discharge port for discharging liquids includes forming an organic material layer on a substrate, applying a soluble resin on the organic material layer to form a resin layer, patterning the resin layer to form a pattern with a shape of the flow path, forming a cover layer as the flow path forming member on the pattern, forming the discharge port to expose a part of the pattern from the cover layer, eluting the pattern from the discharge port to form the flow path, irradiating a substance sticking to a surface of the flow path forming member on which the discharge port is formed with ultraviolet light, wherein the substance contains at least the organic material, and removing the sticking substance.Type: ApplicationFiled: June 19, 2008Publication date: December 25, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Mitsunori Toshishige, Yoshinori Tagawa, Hideo Tamura, Taichi Yonemoto