Patents by Inventor Kazuhiko Okito

Kazuhiko Okito 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: 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: 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
  • 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: 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
  • Publication number: 20190255853
    Abstract: An orifice portion and a reservoir portion are formed between a mold and a surface of either of a second constituent component and second constituent component. Molten resin flowing from between a first constituent component and the second constituent component flows into the reservoir portion through the orifice portion.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 22, 2019
    Inventors: Yasuaki Kitayama, Yukuo Yamaguchi, Kyosuke Toda, Keiichiro Tsukuda, Kazuhiko Okito
  • Publication number: 20190240984
    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: Application
    Filed: February 1, 2019
    Publication date: August 8, 2019
    Inventors: Atsushi Omura, Kazuhiko Okito, Yukuo Yamaguchi, Kyosuke Toda, Keiichiro Tsukuda
  • Patent number: 8118069
    Abstract: A liquid loading method, a liquid container and a head cartridge are provided, which allow the liquid container to be appropriately loaded with liquid such that a stirring member provided in the liquid container fully fulfills its function. For this end, an infusion needle is inserted from the outside of the ink cartridge into the ink storage chamber comprising a swinging member for stirring ink, so that the ink is loaded into the ink storage chamber through the infusion needle.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: February 21, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasushi Nakano, Kazuhiko Okito, Sadayuki Sugama
  • Patent number: 7883193
    Abstract: A swing member that is provided in an ink containing chamber is swung according to movement of a carriage of a printing apparatus. Accordingly, an ink flow occurs in a hollow portion of the swing member from one of openings to the other opening, such that ink in an ink tank is stirred.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: February 8, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Okito, Yasushi Nakano, Takayuki Ishii
  • Patent number: 7775647
    Abstract: A swing member that is provided in an ink containing chamber is swung according to movement of a carriage of a printing apparatus. Accordingly, an ink flow occurs in a hollow portion of the swing member from one of openings to the other opening, such that ink in an ink tank is stirred.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: August 17, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Okito, Yasushi Nakano, Takayuki Ishii
  • Publication number: 20100172204
    Abstract: A swing member that is provided in an ink containing chamber is swung according to movement of a carriage of a printing apparatus. Accordingly, an ink flow occurs in a hollow portion of the swing member from one of openings to the other opening, such that ink in an ink tank is stirred.
    Type: Application
    Filed: March 16, 2010
    Publication date: July 8, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiko Okito, Yasushi Nakano, Takayuki Ishii
  • Publication number: 20100101680
    Abstract: A liquid loading method, a liquid container and a head cartridge are provided, which allow the liquid container to be appropriately loaded with liquid such that a stirring member provided in the liquid container fully fulfills its function. For this end, an infusion needle is inserted from the outside of the ink cartridge into the ink storage chamber comprising a swinging member for stirring ink, so that the ink is loaded into the ink storage chamber through the infusion needle.
    Type: Application
    Filed: April 25, 2008
    Publication date: April 29, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasushi Nakano, Kazuhiko Okito, Sadayuki Sugama
  • Patent number: 7296869
    Abstract: An ink jet recording head having a recording element substrate including three or more discharge port arrays comprising a plurality of discharge ports and recording elements for discharging ink from the discharge ports and supplying heat to areas around the discharge ports; wherein each of the discharge port arrays matches one or another of a plurality of types of ink whose viscosity decreases with a rise in temperature, and the discharge port arrays matching the most viscous of the inks to be discharged being arranged between other discharge port arrays to enable ink drips to be discharged stably, and an ink jet recording apparatus using the same are to be provided.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: November 20, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Okito, Keiichiro Tsukuda
  • Publication number: 20070263048
    Abstract: A swing member that is provided in an ink containing chamber is swung according to movement of a carriage of a printing apparatus. Accordingly, an ink flow occurs in a hollow portion of the swing member from one of openings to the other opening, such that ink in an ink tank is stirred.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 15, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiko Okito, Yasushi Nakano, Takayuki Ishii
  • Patent number: 7293865
    Abstract: An ink container detachably mountable to a recording head, the recording head including an ink jet recording chip which is driven by a driving voltage supplied through a driving voltage wiring lead and an electric signal supplied through an electric signal wiring lead to eject ink, an electrical opening portion provided in at least one of the driving voltage wiring lead and the electric signal wiring lead, the ink container includes a connection element for establishing electrical connection by electrically closing the electrical opening portion when the ink container is mounted to the recording head.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: November 13, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keiichiro Tsukuda, Kazuhiko Okito, Hiroshi Yamada
  • Publication number: 20070103509
    Abstract: An ink jet recording head having a recording element substrate including three or more discharge port arrays comprising a plurality of discharge ports and recording elements for discharging ink from the discharge ports and supplying heat to areas around the discharge ports; wherein each of the discharge port arrays matches one or another of a plurality of types of ink whose viscosity decreases with a rise in temperature, and the discharge port arrays matching the most viscous of the inks to be discharged being arranged between other discharge port arrays to enable ink drips to be discharged stably, and an ink jet recording apparatus using the same are to be provided.
    Type: Application
    Filed: January 8, 2007
    Publication date: May 10, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: KAZUHIKO OKITO, Keiichiro Tsukuda
  • Patent number: 7175255
    Abstract: An ink jet recording head having a recording element substrate including three or more discharge port arrays comprising a plurality of discharge ports and recording elements for discharging ink from the discharge ports and supplying heat to areas around the discharge ports; wherein each of the discharge port arrays matches one or another of a plurality of types of ink whose viscosity decreases with a rise in temperature, and the discharge port arrays matching the most viscous of the inks to be discharged being arranged between other discharge port arrays to enable ink drips to be discharged stably, and an ink jet recording apparatus using the same are to be provided.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: February 13, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Okito, Keiichiro Tsukuda
  • Patent number: 6910759
    Abstract: A liquid discharge head cartridge includes a recording element unit having a plate member with liquid supply paths for supplying liquid to a recording element base plate for recording by discharging the liquid; a liquid supply unit portion having a communication passage for conducting liquid from a liquid supply source; and an elastic sealing member that forms a seal between one end portion of the liquid supply paths of the plate member and an end portion of the communication passage facing the one end portion of the liquid supply paths. The elastic sealing member is provided with liquid flow paths communicating with the liquid supply paths and the communication passage. The liquid supply unit portion and the recording element unit are adhesively bonded with each other at locations other than those having the elastic sealing member arranged thereon.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: June 28, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Kawamura, Toshiaki Hirosawa, Minoru Nozawa, Kyota Miyazaki, Kenta Udagawa, Shuzo Iwanaga, Kazuhiko Okito
  • Publication number: 20050117002
    Abstract: An ink container detachably mountable to a recording head, the recording head including an ink jet recording chip which is driven by a driving voltage supplied through a driving voltage wiring lead and an electric signal supplied through an electric signal wiring lead to eject ink, an electrical opening portion provided in at least one of the driving voltage wiring lead and the electric signal wiring lead, the ink container includes a connection element for establishing electrical connection by electrically closing the electrical opening portion when the ink container is mounted to the recording head.
    Type: Application
    Filed: November 24, 2004
    Publication date: June 2, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Keiichiro Tsukuda, Kazuhiko Okito, Hiroshi Yamada
  • Publication number: 20050104931
    Abstract: An ink jet recording head having a recording element substrate including three or more discharge port arrays comprising a plurality of discharge ports and recording elements for discharging ink from the discharge ports and supplying heat to areas around the discharge ports; wherein each of the discharge port arrays matches one or another of a plurality of types of ink whose viscosity decreases with a rise in temperature, and the discharge port arrays matching the most viscous of the inks to be discharged being arranged between other discharge port arrays to enable ink drips to be discharged stably, and an ink jet recording apparatus using the same are to be provided.
    Type: Application
    Filed: August 27, 2004
    Publication date: May 19, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kazuhiko Okito, Keiichiro Tsukuda
  • Patent number: 6474763
    Abstract: A recording control method and a recording apparatus in which high accuracy in the position of a discharged liquid droplet is obtained irrespective of changes in the temperature of a recording head are provided. In a liquid discharging method in which a bubble is generated by supplying ink (a liquid) with thermal energy, and the generated bubble is caused to communicate with the atmospheric air, by controlling a driving signal so that a discharging state in which a part of the ink to be discharged falls even if the temperature of the recording head changes, the direction of ink discharge can be stabilized.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: November 5, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuichi Murakami, Masayoshi Tachihara, Ken Tsuchii, Toshiharu Inui, Mitsuhiro Ono, Kazuhiko Okito