Patents by Inventor Yoichi Naganuma

Yoichi Naganuma 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: 11833818
    Abstract: A liquid ejecting head includes: a first pressure chamber that applies pressure to a liquid; a second pressure chamber that applies pressure to the liquid; a nozzle channel that extends in a first direction and includes a nozzle that ejects the liquid; a first communication channel that extends in a second direction crossing the first direction and enables the first pressure chamber and the nozzle channel to communicate with each other; a second communication channel that extends in the second direction and enables the second pressure chamber and the nozzle channel to communicate with each other; and a first branch channel that has a portion extending in the first direction and enables the first pressure chamber and the nozzle channel to communicate with each other through a path different from a path of the first communication channel.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: December 5, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Eiju Hirai, Yoichi Naganuma, Shotaro Tamai, Akinori Taniuchi
  • Publication number: 20230294400
    Abstract: A liquid ejecting head includes a pressure chamber substrate having a pressure chamber, a drive element, a communication substrate having a supply communication flow path and a nozzle communication flow path at a position different from the supply communication flow path, and a coupling substrate having a supply port and the supply communication flow path and a discharge port, in which the pressure chamber substrate has a partition wall, and the communication substrate includes a first region bonded to the coupling substrate and overlapping the pressure chamber between the supply communication flow path and the nozzle communication flow path when viewed in a thickness direction, and a second region bonded to the coupling substrate and overlapping the partition wall at a position adjacent to the first region via an opening of the supply communication flow path when viewed in the thickness direction of the pressure chamber substrate.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 21, 2023
    Inventors: Yoichi NAGANUMA, Yuma FUKUZAWA, Shohei MIZUTA, Naohiro NAKAGAWA
  • Publication number: 20230294401
    Abstract: A liquid ejecting head includes a pressure chamber substrate having a pressure chamber, a drive element, a communication substrate having a supply communication flow path communicating with the pressure chamber and a nozzle communication flow path communicating with the pressure chamber and communicating with a nozzle for ejecting a liquid at a position different from the supply communication flow path, and a coupling substrate disposed between the pressure chamber substrate and the communication substrate, the coupling substrate having a supply port located between the pressure chamber and the supply communication flow path and a discharge port located between the pressure chamber and the nozzle communication flow path, in which a flow path cross-sectional area of the supply port is smaller than a flow path cross-sectional area of the supply communication flow path, and the coupling substrate is made of a photosensitive resist film.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 21, 2023
    Inventors: Sosuke YAMASAKI, Shohei MIZUTA, Yoichi NAGANUMA, Yuma FUKUZAWA
  • Patent number: 11738557
    Abstract: The nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: August 29, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Naganuma, Yuma Fukuzawa, Shotaro Tamai
  • Patent number: 11654681
    Abstract: Wall surfaces of the nozzle channel include a first wall surface which extends in the first direction and in which the nozzle is provided and a second wall surface which extends in the first direction and is opposite to the first wall surface, wall surfaces of the first communication channel include a third wall surface which extends in the second direction and a distance from which to the nozzle in the first direction is longest and a fourth wall surface which extends in the second direction and is opposite to the third wall surface, and a fifth wall surface which extends in a third direction set between the first direction and the second direction is provided between the second wall surface and the fourth wall surface.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: May 23, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Naganuma, Yuma Fukuzawa, Shotaro Tamai
  • Publication number: 20230043344
    Abstract: A liquid ejecting head includes a first pressure compartment extending in a first direction; a second pressure compartment extending in the first direction; a first communication passage continuous from the first pressure compartment and extending in the first direction; a second communication passage continuous to the second pressure compartment and extending in the first direction; a third communication passage continuous from the first communication passage and extending in a second direction intersecting with the first direction; a fourth communication passage continuous to the second communication passage and extending in the second direction; a fifth communication passage continuous from the third communication passage and continuous to the fourth communication passage and extending in the first direction; and a nozzle provided on the fifth communication passage.
    Type: Application
    Filed: August 4, 2022
    Publication date: February 9, 2023
    Inventors: Yoichi NAGANUMA, Yuma FUKUZAWA, Shohei MIZUTA
  • Patent number: 11554584
    Abstract: a first sloped portion that is provided between the first wall surface and the third wall surface includes a first constituting surface that extends in a third direction between the first direction and the second direction.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: January 17, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Naganuma, Yuma Fukuzawa, Hitoshi Takaai, Shotaro Tamai
  • Patent number: 11548280
    Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: January 10, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Shotaro Tamai, Yoichi Naganuma, Akira Miyagishi, Kazuaki Uchida
  • Patent number: 11491785
    Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: November 8, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Shotaro Tamai, Yoichi Naganuma, Akira Miyagishi, Kazuaki Uchida
  • Publication number: 20220234356
    Abstract: The nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
    Type: Application
    Filed: April 13, 2022
    Publication date: July 28, 2022
    Inventors: Yoichi NAGANUMA, Yuma FUKUZAWA, Shotaro TAMAI
  • Patent number: 11390079
    Abstract: Provided are an MEMS device, a liquid ejecting head, a liquid ejecting apparatus, a manufacturing method of a MEMS device, a manufacturing method of a liquid ejecting head and a manufacturing method of a liquid ejecting apparatus. Provided is a MEMS device that includes a first substrate on which a flexibly deformable thin film member is laminated, a second substrate disposed at an interval with respect to the first substrate, and an adhesion layer that adheres the first substrate to the second substrate, in which an end of the thin film member extends to the outside of the end of the first substrate in an in-plane direction of the first substrate.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 19, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Yamada, Motoki Takabe, Yasuyuki Matsumoto, Yoichi Naganuma, Eiju Hirai
  • Patent number: 11331917
    Abstract: the nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: May 17, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Naganuma, Yuma Fukuzawa, Shotaro Tamai
  • Patent number: 11292247
    Abstract: Provided is a liquid discharging head including: a nozzle discharging a liquid; a chamber plate having a plurality of pressure chambers, a drive element provided to correspond to each of the pressure chambers, and a plurality of lead electrodes for supplying an electric signal to the drive element; and a circuit substrate having a terminal coupled to the lead electrode. A first pressure chamber and a second pressure chamber communicate with the nozzle in common. The chamber plate includes a first individual lead electrode for the drive element corresponding to the first pressure chamber and a second individual lead electrode for the drive element corresponding to the second pressure chamber. The terminal of the circuit substrate is coupled so as to overlap the first individual lead electrode and the second individual lead electrode in plan view.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: April 5, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Shohei Mizuta, Motoki Takabe, Shunya Fukuda, Yoichi Naganuma
  • Patent number: 11230100
    Abstract: Provided is a liquid discharging head including a nozzle discharging a liquid; a chamber plate in which a plurality of pressure chambers are arranged side by side on a first surface side; and a flow path plate having a second surface formed with an opening of a communication flow path, wherein a first region of a partition wall between a first pressure chamber and a second pressure chamber adjacent to each other among the plurality of pressure chambers is constrained by being bonded to the second surface of the flow path plate, and a second region of the partition wall overlaps the opening of the communication flow path in plan view.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: January 25, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Yoichi Naganuma, Shunya Fukuda, Shohei Mizuta
  • Patent number: 11225072
    Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: January 18, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Shotaro Tamai, Yoichi Naganuma, Akira Miyagishi, Kazuaki Uchida
  • Patent number: 11225073
    Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: January 18, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Shotaro Tamai, Yoichi Naganuma, Akira Miyagishi, Kazuaki Uchida
  • Publication number: 20210362498
    Abstract: A liquid ejecting head includes: a pressure chamber; a piezoelectric element that generates energy for applying pressure to an ink in the pressure chamber; a nozzle channel that extends in the X-axis direction and communicates with a nozzle for ejecting the ink; a supply communication channel which enables the pressure chamber and the nozzle channel to communicate with each other; a discharge communication channel which communicates with the nozzle channel; a wiring substrate electrically coupled to a drive circuit that drives the piezoelectric element; and a wiring section that electrically couples the wiring substrate and the piezoelectric element, in which, as viewed in the Z-axis direction orthogonal to the X-axis direction, the wiring section is provided at a position at which the wiring section overlaps the nozzle channel, and the wiring section extends in the ±Q direction, which differs from the X-axis direction.
    Type: Application
    Filed: May 24, 2021
    Publication date: November 25, 2021
    Inventors: Shotaro TAMAI, Yoichi NAGANUMA, Yuma FUKUZAWA, Hitoshi TAKAAI, Eiju HIRAI
  • Patent number: 11167552
    Abstract: Provided is a liquid discharging head including: a nozzle discharging a liquid; a pressure chamber row in which a plurality of pressure chambers communicating with the nozzle are arranged side by side along a first axis direction; and a first reservoir and a second reservoir commonly communicating with the plurality of pressure chambers, in which the pressure chamber row includes a first pressure chamber communicating with the first reservoir and a second pressure chamber communicating with the second reservoir, and the liquid discharging head further comprises a communication flow path causing the first pressure chamber and the second pressure chamber to commonly communicate with one nozzle.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: November 9, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Shohei Mizuta, Motoki Takabe, Shunya Fukuda, Yoichi Naganuma
  • Publication number: 20210323303
    Abstract: A liquid ejecting head includes: a first pressure chamber that applies pressure to a liquid; a second pressure chamber that applies pressure to the liquid; a nozzle channel that extends in a first direction and includes a nozzle that ejects the liquid; a first communication channel that extends in a second direction crossing the first direction and enables the first pressure chamber and the nozzle channel to communicate with each other; a second communication channel that extends in the second direction and enables the second pressure chamber and the nozzle channel to communicate with each other; and a first branch channel that has a portion extending in the first direction and enables the first pressure chamber and the nozzle channel to communicate with each other through a path different from a path of the first communication channel.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 21, 2021
    Inventors: Yuma FUKUZAWA, Eiju HIRAI, Yoichi NAGANUMA, Shotaro TAMAI, Akinori TANIUCHI
  • Publication number: 20210260875
    Abstract: the nozzle channel includes a first portion that extends in the first direction and communicates with the first communication channel and a second portion that extends in a third direction crossing the first direction and orthogonal to the second direction and communicates with the first portion, and an angle formed between the first direction and the third direction is larger than 0° and smaller than 90°.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 26, 2021
    Inventors: Yoichi NAGANUMA, Yuma FUKUZAWA, Shotaro TAMAI