Patents by Inventor Kyosuke Toda

Kyosuke Toda 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).

  • Publication number: 20220016896
    Abstract: A liquid supply member includes a first member, a second member, and a damper member disposed between the first member and the second member, wherein the first member is a member configured to form a liquid chamber, wherein the damper member is a flexible member configured to form the liquid chamber together with the first member, wherein the second member is a member configured to form an atmosphere communication chamber communicating with an ambient atmosphere at a position between the damper member and the second member and opposing the liquid chamber with the damper member in between, and wherein a protrusion portion is formed on a surface of the second member facing the atmosphere communication chamber at a position corresponding to a central part of the damper member, the protrusion portion protruding toward the damper member beyond a connection surface between the damper member and the second member.
    Type: Application
    Filed: July 12, 2021
    Publication date: January 20, 2022
    Inventors: Ryo Sato, Hiroki Tajima, Kyosuke Toda, Shimpei Yoshikawa
  • Patent number: 11207889
    Abstract: An inkjet print head includes a print element substrate having an ejection port array of a plurality of ejection ports arranged and an ink supply port that supplies the ink to the ejection ports. A support member has a partition and an opening that supplies the ink to the ink supply port, in which the print element substrate and the support member are bonded by an adhesive. The partition includes a first portion and a second portion. The second portion is located between individual extension lines of two surfaces of the first portion. An end of the surface of the print element substrate facing the second portion is located between an extension line of the surface of the first portion and an extension line of a surface of the second portion.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: December 28, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuaki Kitayama, Kyosuke Toda
  • Publication number: 20210394509
    Abstract: An image recording apparatus includes a liquid chamber, a first electrode pin and a second electrode pin which are inserted into the liquid chamber, application unit for applying a voltage between the first electrode pin and the second electrode pin, and detection unit for detecting a current which flows between the first electrode pin and the second electrode pin, the image recording apparatus has: a first period in which the application unit applies the voltage between the first electrode pin and the second electrode pin, with the first electrode pin as an anode side and the second electrode pin as a cathode side, and the detection unit detects the current; and a second period in which the application unit applies the voltage between the first electrode pin and the second electrode pin, with the first electrode pin as the cathode side and the second electrode pin as the anode side.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 23, 2021
    Inventors: Yosuke TAKAGI, Chiaki MURAOKA, Akira GOTO, Kyosuke TODA
  • Publication number: 20210394523
    Abstract: An image recording apparatus includes a liquid chamber that stores liquid, a first electrode pin and a second electrode pin to be inserted into the liquid chamber, applying unit for applying voltage across the first electrode pin and the second electrode pin, with the first electrode pin as an anode side and the second electrode pin as a cathode side, and detecting unit for detecting electric current flowing, and detection operation of detecting amount of liquid in the liquid chamber by the detecting unit detecting the electric current when the applying unit applies voltage. Prior to the detection operation, an oxidization aging operation is performed, in which the applying unit applies voltage across the first electrode pin and the second electrode pin. An amount of an oxide layer formed on at least a portion of the first electrode pin exposed inside the liquid chamber is greater than the second.
    Type: Application
    Filed: June 10, 2021
    Publication date: December 23, 2021
    Inventors: Kyosuke TODA, Yosuke TAKAGI, Akira GOTO, Chiaki MURAOKA
  • Patent number: 11192381
    Abstract: A liquid ejection apparatus includes: a recording head that ejects liquid; a sub-tank that is connected to the recording head and temporarily stores the liquid to be supplied to the recording head; a liquid tank that communicates with the sub-tank and is able to be filled with the liquid; a first atmosphere opening unit that is provided in the liquid tank; and a second atmosphere opening unit that is provided in the sub-tank. The second atmosphere opening unit is closable when the liquid tank is filled with the liquid, and the first atmosphere opening unit and the second atmosphere opening unit are able to open the liquid tank and the sub-tank to the atmosphere, respectively, when the sub-tank is filled with the liquid filled in the liquid tank by a hydraulic head pressure.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: December 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Tajima, Keiichiro Tsukuda, Kenji Yabe, Yuji Tamaru, Naoko Shimizu, Kyosuke Toda, Sayaka Seki, Yosuke Takagi, Shimpei Yoshikawa, Ryo Sato
  • Patent number: 11192370
    Abstract: A liquid ejection head includes a recording element substrate including a plurality of ejection port arrays, a support member supporting the recording element substrate, and including a plurality of liquid chambers, and a channel member including a plurality of channels. Each of the plurality of liquid chambers includes an opening connected to one of the plurality of channels. Each of the plurality of channels is a channel that extends upward from the opening in a vertical direction, in a posture of the liquid ejection head in ejecting the liquid. A volume of the channel connected to the opening located at a central portion of the liquid chamber in the longitudinal direction, among the plurality of channels, is greater than a volume of the channel connected to the opening located on an end portion side apart from the central portion of the liquid chamber in the longitudinal direction.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: December 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoko Shimizu, Yosuke Takagi, Shimpei Yoshikawa, Hiroki Tajima, Kyosuke Toda
  • Publication number: 20210197562
    Abstract: A liquid discharge head includes an element substrate including an energy generation element configured to generate energy for discharging liquid from a discharge port, and a supporting member which supports the element substrate and in which a liquid chamber configured to supply liquid to the discharge port is formed, wherein a recessed portion communicating with the liquid chamber is formed at a position above the liquid chamber in a vertical direction in an orientation of the liquid discharge head when used, and wherein at least one of surfaces forming the recessed portion is formed of a flexible member configured to absorb vibration of liquid in the liquid chamber.
    Type: Application
    Filed: December 11, 2020
    Publication date: July 1, 2021
    Inventors: Kyosuke Toda, Sayaka Seki, Shimpei Yoshikawa, Kazuhiko Okito, Kenji Yabe, Yasuaki Kitayama, Ryo Sato
  • Publication number: 20210197566
    Abstract: A liquid ejection head includes an element substrate having an energy-generating element configured to generate an energy for ejecting a liquid from an ejection orifice, a support member for supporting the element substrate, the support member including a liquid chamber formed therein to supply the liquid to the ejection orifice, and a damper portion for absorbing vibration of the liquid inside the liquid chamber, the damper portion being flexible. The support member has a through-hole for communicating with the liquid chamber at a position located above the liquid chamber in a vertical direction when the liquid ejection head is in a use orientation. The damper portion has a taper portion that tapers downwardly in the vertical direction and is positioned in such a manner that the tapering portion closes the through-hole, and the damper portion and the support member are attached to each other by a fixing member.
    Type: Application
    Filed: December 9, 2020
    Publication date: July 1, 2021
    Inventors: Sayaka Seki, Kyosuke Toda, Shimpei Yoshikawa, Ryo Sato, Keiichiro Tsukuda, Kazuhiko Okito, Kenji Yabe, Yasuaki Kitayama
  • Publication number: 20210170748
    Abstract: A liquid ejection head includes a flow path-forming part having a flow path for liquid supplied from a liquid reservoir and a plurality of outlet ports for discharging the liquid, a liquid ejecting unit having a plurality of inlet ports into which the liquid flows and a plurality of ejection element rows corresponding to the inlet ports and each having a plurality of ejection elements to eject the liquid, and a sealing member having a sealing opening which communicates the plurality of outlet ports and the plurality of inlet ports, the sealing member sealing a portion between the flow path-forming part and the liquid ejecting unit so that the plurality of outlet ports and the plurality of inlet ports are in communication. A plurality of the sealing openings are provided for the sealing member, and at least one of the sealing openings has at least two inlet ports.
    Type: Application
    Filed: December 4, 2020
    Publication date: June 10, 2021
    Inventors: Yosuke Takagi, Hiroki Tajima, Kyosuke Toda, Naoko Shimizu, Shimpei Yoshikawa
  • Publication number: 20210162766
    Abstract: A liquid filling method of filling a liquid storage device including a first tank that stores a liquid to be supplied to an ejection head ejecting the liquid and a second tank that stores the liquid to be supplied to the first tank through a connection port provided in the first tank with the liquid, the method including: injecting the liquid from a liquid storage container into the first tank through a first liquid introduction port provided in the first tank, in a state where a second liquid introduction port provided in the second tank is closed.
    Type: Application
    Filed: November 24, 2020
    Publication date: June 3, 2021
    Inventors: Atsushi OMURA, Hiroki TAJIMA, Keiichiro TSUKUDA, Kenji YABE, Yuji TAMARU, Naoko SHIMIZU, Sayaka SEKI, Yosuke TAKAGI, Shimpei YOSHIKAWA, Ryo SATO, Kyosuke TODA
  • Patent number: 11020887
    Abstract: A resin molding method includes a first molding step, a sliding step, a second molding step and a mold opening step. In the first molding step, first molded part supported in a fixed mold and a second molded part supported in a die slide mold are molded in different positions in a second direction. In the sliding step, the movable mold is removed in a first direction and the first molded part and the second molded part are aligned by the die slide mold is moved in the second direction. In the second molding step, the movable mold is clamped again with the fixed mold and resin is injected into engaged portions. Each of the first molded part and the second molded part includes at least one wall extending in the first direction, and in the second molding step, the first molded part and the second molded part are engaged with each other at sides of the walls extending in the first direction.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: June 1, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Oikawa, Yukuo Yamaguchi, Mikiya Umeyama, Hiromasa Amma, Takuya Iwano, Satoshi Kimura, Naoko Tsujiuchi, Yasushi Iijima, Kyosuke Toda
  • Patent number: 11014361
    Abstract: A manufacturing method of a liquid supply component in which a liquid supply path is formed between a first constituent component and a second constituent component that are joined with molten resin. The method includes a first step of preparing these constituent components, a second step of causing the constituent components to face each other and forming an orifice portion and a reservoir portion between a mold and a surface of either of the constituent components, and a third step of pouring the molten resin between the constituent components so that it flows into the reservoir portion through the orifice portion.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: May 25, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuaki Kitayama, Yukuo Yamaguchi, Kyosuke Toda, Keiichiro Tsukuda, Kazuhiko Okito
  • Patent number: 10926441
    Abstract: There is provided a liquid supply member capable of suppressing deformation of a liquid supply path and decrease in sealing property of a liquid supply path, during molding, and a manufacturing method of the liquid supply member. For that purpose, in die-slide injection molding that combines two components, a protection portion that protects a part of one component easily affected by heat and pressure, is provided on the other component.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 23, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoko Tsujiuchi, Yukuo Yamaguchi, Mikiya Umeyama, Satoshi Oikawa, Hiromasa Amma, Takuya Iwano, Satoshi Kimura, Yasushi Iijima, Kyosuke Toda
  • Patent number: 10906221
    Abstract: There is provided a manufacturing method of a liquid supply member capable of suppressing decrease in sealing property of a liquid supply path and deformation of the liquid supply path or the external shape. For that purpose, a manufacturing process of a liquid supply member prevents inflow of a molten resin into a concave portion of a portion other than a liquid supply flow path in a liquid supply member.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 2, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoko Tsujiuchi, Yukuo Yamaguchi, Mikiya Umeyama, Satoshi Oikawa, Hiromasa Amma, Takuya Iwano, Satoshi Kimura, Yasushi Iijima, Kyosuke Toda
  • Publication number: 20200398566
    Abstract: A liquid ejection head includes a recording element substrate including a plurality of ejection port arrays, a support member supporting the recording element substrate, and including a plurality of liquid chambers, and a channel member including a plurality of channels. Each of the plurality of liquid chambers includes an opening connected to one of the plurality of channels. Each of the plurality of channels is a channel that extends upward from the opening in a vertical direction, in a posture of the liquid ejection head in ejecting the liquid. A volume of the channel connected to the opening located at a central portion of the liquid chamber in the longitudinal direction, among the plurality of channels, is greater than a volume of the channel connected to the opening located on an end portion side apart from the central portion of the liquid chamber in the longitudinal direction.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 24, 2020
    Inventors: Naoko Shimizu, Yosuke Takagi, Shimpei Yoshikawa, Hiroki Tajima, Kyosuke Toda
  • Patent number: 10828812
    Abstract: A molded part including a first member having a plurality of openings and a second member contacting with a peripheral edge of each of the plurality of openings so as to cover the openings, and having a hollow portion formed by sealing the contact portion with a sealing material, wherein: the second member defines a flow channel for filling the sealing material between the first member and the second member; the second member has a branched shape in which sections corresponding to positions covering the plurality of openings are branched from each other, and portions near a gate of the flow channel are connected as a common section; and the branched shape has a bridge structure for connecting the respective branched sections.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takuya Iwano, Yukuo Yamaguchi, Mikiya Umeyama, Satoshi Oikawa, Hiromasa Amma, Satoshi Kimura, Naoko Tsujiuchi, Yasushi Iijima, Kyosuke Toda
  • Publication number: 20200307194
    Abstract: There is provided a method of manufacturing a liquid ejection head. The liquid ejection head includes a recording device substrate, an electric wiring member configured to be connected to the recording device substrate at an electric connection portion, and a support member including a concave portion and a convex portion. The convex portion includes a first surface and a second surface. The method includes applying an adhesive to the surface of the concave portion on which the recording device substrate is to be placed and to the first surface, pressing the applied adhesive after the recording device substrate is placed on the surface of the concave portion on which the recording device substrate is to be placed, to fill, with the adhesive, a gap between the convex portion and the recording device substrate to a position higher than the first surface, and sealing the electric connection portion.
    Type: Application
    Filed: March 16, 2020
    Publication date: October 1, 2020
    Inventors: Yasuaki Kitayama, Kyosuke Toda, Tatsunori Fujii
  • Publication number: 20200290353
    Abstract: An inkjet print head includes a print element substrate having an ejection port array of a plurality of ejection ports arranged and an ink supply port that supplies the ink to the ejection ports. A support member has a partition and an opening that supplies the ink to the ink supply port, in which the print element substrate and the support member are bonded by an adhesive. The partition includes a first portion and a second portion. The second portion is located between individual extension lines of two surfaces of the first portion. An end of the surface of the print element substrate facing the second portion is located between an extension line of the surface of the first portion and an extension line of a surface of the second portion.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 17, 2020
    Inventors: Yasuaki Kitayama, Kyosuke Toda
  • Publication number: 20200290362
    Abstract: A liquid ejection apparatus includes: a recording head that ejects liquid; a sub-tank that is connected to the recording head and temporarily stores the liquid to be supplied to the recording head; a liquid tank that communicates with the sub-tank and is able to be filled with the liquid; a first atmosphere opening unit that is provided in the liquid tank; and a second atmosphere opening unit that is provided in the sub-tank. The second atmosphere opening unit is closable when the liquid tank is filled with the liquid, and the first atmosphere opening unit and the second atmosphere opening unit are able to open the liquid tank and the sub-tank to the atmosphere, respectively, when the sub-tank is filled with the liquid filled in the liquid tank by a hydraulic head pressure.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 17, 2020
    Inventors: Hiroki Tajima, Keiichiro Tsukuda, Kenji Yabe, Yuji Tamaru, Naoko Shimizu, Kyosuke Toda, Sayaka Seki, Yosuke Takagi, Shimpei Yoshikawa, Ryo Sato
  • Patent number: 10647127
    Abstract: Peripheral portion of filters includes short-side portions and long-side portions. A first component and a second component each include a first holding section and a second holding section, the long-side portion of the filter being compressively held between the first holding sections, and the short-side portion of the filter being compressively held between the second holding sections. At least one of the first component and the second component includes a wall portion configured to isolate the long-side portion and the resin from each other. The short-side portion and the resin are in contact with each other.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: May 12, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Omura, Kazuhiko Okito, Yukuo Yamaguchi, Kyosuke Toda, Keiichiro Tsukuda