Patents by Inventor Yasuhiko Osaki

Yasuhiko Osaki 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).

  • Patent number: 11179948
    Abstract: A liquid ejecting head includes, on an element substrate, an ejection orifice line formed of a plurality of ejection orifices, a plurality of pressure chambers that communicates with the ejection orifices, respectively, a first flow passage and a second flow passage that extend along the ejection orifice line and communicate with the plurality of pressure chambers, respectively, and a plurality of first openings that communicates with the first flow passage and a plurality of second openings that communicates with the second flow passage. The number of the first openings and the number of the second openings are equal to each other and even numbers. Out of the plurality of first openings and the plurality of second openings, openings positioned at both ends in an ejection orifice line direction are either the first openings or the second openings.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: November 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akiko Hammura, Yoshiyuki Nakagawa, Yasuhiko Osaki
  • Patent number: 11117374
    Abstract: A liquid ejection head includes an ejection orifice for ejecting a liquid; a flow path in which an energy generating element is disposed, generates an energy to be used for ejecting the liquid; a liquid inside the flow path; an ejection orifice part that allows the ejection orifice and the flow path to communicate with each other; a supply flow path for supplying the liquid from the outside; and a recovery flow path for recovering the liquid to the outside. The moisture content of the liquid is 65 wt % or less. The liquid inside the flow path is circulated between the inside and the outside of the flow path.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: September 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nakagawa, Kazuhiro Yamada, Shingo Okushima, Yasuhiko Osaki, Naozumi Nabeshima
  • Patent number: 11065872
    Abstract: A liquid ejection head includes a nozzle including an ejection port for ejecting a liquid for performing recording on a recording medium, and a pressure chamber in which an energy generating element that generates energy used for ejecting the liquid from the ejection port is disposed; and a heating unit that heats the liquid. In the liquid ejection head, the liquid in the pressure chamber is circulated to and from the outside of the pressure chamber, and an average number of preliminary ejections per nozzle during an operation period in which the recording is performed is equal to or greater than 0 and equal to or less than 20.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: July 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Osaki, Shingo Okushima, Yoshiyuki Nakagawa, Kazuhiro Yamada, Naozumi Nabeshima
  • Patent number: 10821736
    Abstract: A liquid discharge head includes a discharge port; a flow passage; a discharge port part; a supply flow passage; and a recovery flow passage. The flow passage, the supply flow passage, and the recovery flow passage are configured such that the liquid inside the flow passage is capable of being circulated between the inside of the flow passage and the outside of the flow passage. An opening of the discharge port is configured such that a liquid surface of the liquid within the opening of the discharge port has a first region and that a second region, and a viscosity of the liquid in the first region is 1.2 or more times higher than a viscosity of the liquid in the second region.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 3, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Okushima, Yoshiyuki Nakagawa, Kazuhiro Yamada, Yasuhiko Osaki, Naozumi Nabeshima
  • Publication number: 20200254758
    Abstract: A liquid ejecting head includes, on an element substrate, an ejection orifice line formed of a plurality of ejection orifices, a plurality of pressure chambers that communicates with the ejection orifices respectively, a first flow passage and a second flow passage that extend along the ejection orifice line and communicate with the plurality of pressure chambers respectively, a plurality of first openings that communicates with the first flow passage and a plurality of second openings that communicates with the second flow passage. The number of the first openings and the number of the second openings are equal to each other and even numbers. Out of the plurality of first openings and the plurality of second openings, openings positioned at both ends in an ejection orifice line direction are either the first openings or the second openings.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 13, 2020
    Inventors: Akiko Hammura, Yoshiyuki Nakagawa, Yasuhiko Osaki
  • Patent number: 10654269
    Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: May 19, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
  • Patent number: 10618280
    Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: April 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
  • Publication number: 20200108605
    Abstract: A liquid ejection head includes a nozzle including an ejection port for ejecting a liquid for performing recording on a recording medium, and a pressure chamber in which an energy generating element that generates energy used for ejecting the liquid from the ejection port is disposed; and a heating unit that heats the liquid. In the liquid ejection head, the liquid in the pressure chamber is circulated to and from the outside of the pressure chamber, and an average number of preliminary ejections per nozzle during an operation period in which the recording is performed is equal to or greater than 0 and equal to or less than 20.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Yasuhiko Osaki, Shingo Okushima, Yoshiyuki Nakagawa, Kazuhiro Yamada, Naozumi Nabeshima
  • Publication number: 20200108604
    Abstract: A liquid ejection head includes an ejection orifice for ejecting a liquid; a flow path in which an energy generating element is disposed, generates an energy to be used for ejecting the liquid; a liquid inside the flow path; an ejection orifice part that allows the ejection orifice and the flow path to communicate with each other; a supply flow path for supplying the liquid from the outside; and a recovery flow path for recovering the liquid to the outside. The moisture content of the liquid is 65 wt % or less. The liquid inside the flow path is circulated between the inside and the outside of the flow path.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Yoshiyuki Nakagawa, Kazuhiro Yamada, Shingo Okushima, Yasuhiko Osaki, Naozumi Nabeshima
  • Publication number: 20200108615
    Abstract: A liquid discharge head includes a discharge port; a flow passage; a discharge port part; a supply flow passage; and a recovery flow passage. The flow passage, the supply flow passage, and the recovery flow passage are configured such that the liquid inside the flow passage is capable of being circulated between the inside of the flow passage and the outside of the flow passage. An opening of the discharge port is configured such that a liquid surface of the liquid within the opening of the discharge port has a first region and that a second region, and a viscosity of the liquid in the first region is 1.2 or more times higher than a viscosity of the liquid in the second region.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Shingo Okushima, Yoshiyuki Nakagawa, Kazuhiro Yamada, Yasuhiko Osaki, Naozumi Nabeshima
  • Patent number: 10507644
    Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: December 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Kawamura, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Yasuhiko Osaki, Takuya Iwano, Shin Ishimatsu
  • Patent number: 10471728
    Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Genji Inada, Toshiaki Hirosawa, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Shin Ishimatsu, Takuya Iwano
  • Patent number: 10391767
    Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: August 27, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiko Osaki, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Takuya Iwano, Shin Ishimatsu
  • Publication number: 20190009535
    Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.
    Type: Application
    Filed: July 5, 2018
    Publication date: January 10, 2019
    Inventors: Yasuhiko Osaki, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Takuya Iwano, Shin Ishimatsu
  • Publication number: 20190001674
    Abstract: The liquid ejection head 1 includes an element substrate 4 including an energy-generating element that applies ejection energy to liquid, a first electric wiring board 7 electrically connected to the element substrate 4, and a second electric wiring board 9 on which an integrated circuit element 10 is mounted and which is electrically connected to the first electric wiring board 7. An electric signal is supplied to the integrated circuit element 10 mounted on the second electric wiring board 9 through the first electric wiring board 7, processed by the integrated circuit element 10, and supplied to the energy-generating element through the second electric wiring board 9 and the first electric wiring board 7.
    Type: Application
    Filed: June 12, 2018
    Publication date: January 3, 2019
    Inventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
  • Publication number: 20180361748
    Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 20, 2018
    Inventors: Genji Inada, Toshiaki Hirosawa, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Shin Ishimatsu, Takuya Iwano
  • Publication number: 20180304620
    Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 25, 2018
    Inventors: Shogo Kawamura, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Yasuhiko Osaki, Takuya Iwano, Shin Ishimatsu
  • Patent number: 9987849
    Abstract: There is provided a liquid ejecting device including a damper device which can sufficiently absorb dynamic pressure of a liquid while miniaturization of a device body is achieved and which can be easily manufactured. For that purpose, a part of an ink storage unit in the damper device is formed by a flexible member having a convex shape.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: June 5, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Genji Inada, Yasushi Iijima, Satoshi Kimura, Yasuhiko Osaki, Kenji Kitabatake
  • Patent number: 9821553
    Abstract: A liquid discharging head includes a support member and plural print element substrates through which a liquid is discharged. The print element substrates are disposed on the support member and provided with the liquid through a liquid supply channel formed in the support member. The sectional area of the liquid supply channel at a position corresponding to each of the print element substrates is determined in accordance with an order in which the print element substrates are provided with the liquid.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: November 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yamamoto, Yasuhiko Osaki
  • Publication number: 20170050441
    Abstract: There is provided a liquid ejecting device including a damper device which can sufficiently absorb dynamic pressure of a liquid while miniaturization of a device body is achieved and which can be easily manufactured. For that purpose, a part of an ink storage unit in the damper device is formed by a flexible member having a convex shape.
    Type: Application
    Filed: August 8, 2016
    Publication date: February 23, 2017
    Inventors: Genji Inada, Yasushi Iijima, Satoshi Kimura, Yasuhiko Osaki, Kenji Kitabatake