Patents by Inventor Motoki Takabe

Motoki Takabe 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: 20210402772
    Abstract: In this liquid ejecting head, the pressure chamber extends in a second direction crossing a first direction, the first direction being a direction from the pressure chamber to the nozzle. The pressure chamber and the absorbing chamber are disposed at a same position in the first direction and next to each other in the second direction. The actuator is disposed on an opposite side in the first direction with respect to the pressure chamber. The absorption member is disposed on the opposite side in the first direction with respect to the absorbing chamber, the absorption member including at least part of members constituting the actuator.
    Type: Application
    Filed: June 28, 2021
    Publication date: December 30, 2021
    Inventors: Motoki TAKABE, Shohei MIZUTA, Yu SHIOZAWA
  • Patent number: 11173715
    Abstract: A liquid discharge head includes: a nozzle plate provided with a nozzle hole that discharges a liquid; a silicon substrate provided with a pressure chamber that is connected with the nozzle hole; a diaphragm provided on the silicon substrate; and a piezoelectric element that is provided on the diaphragm and that changes a volume of the pressure chamber, where: the diaphragm includes a zirconium oxide layer; the zirconium oxide layer has (?111) preferred orientation; and in X-ray diffraction of the diaphragm, a difference between a position of (002) peak of the zirconium oxide layer and a position of (220) peak of the silicon substrate is 13.26° or more and 13.30° or less.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: November 16, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Harunobu Koike, Takanori Aimono, Masao Nakayama, Motoki Takabe, Koji Sumi, Yasuhiro Itayama
  • 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
  • Patent number: 11135844
    Abstract: Provided is a liquid discharge head that includes a nozzle plate provided with a nozzle hole that discharges a liquid, a silicon substrate provided with a pressure generating chamber that communicates with the nozzle hole, a vibration plate provided on the silicon substrate, and a piezoelectric element that is provided on the vibration plate and changes a volume of the pressure generating chamber. The piezoelectric element includes a piezoelectric layer including a composite oxide of a perovskite structure containing lead, zirconium, and titanium. A difference between a peak position derived from a (100) surface of the piezoelectric layer and a peak position derived from a (220) surface of the silicon substrate in an X-ray diffraction of the piezoelectric layer is less than 25.00°.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: October 5, 2021
    Inventors: Motoki Takabe, Yasuhiro Itayama, Koji Sumi
  • Publication number: 20210300040
    Abstract: A liquid discharge head that includes piezoelectric elements, a pressure chamber plate defining pressure chambers corresponding to the piezoelectric elements, and a vibrating plate disposed between the piezoelectric elements and the pressure chamber plate is provided. In the liquid discharge head, the vibrating plate has, in a first position and a second position, a first portion and a second portion that is away from the end of the pressure chamber than the first portion in a first direction and has a thickness different from a thickness of the first portion. In the first position, a width of the second portion in the first direction is a first width, and in the second position, a width of the second portion in the first direction is a second width that is less than the first width.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 30, 2021
    Inventor: Motoki TAKABE
  • Publication number: 20210276330
    Abstract: A liquid discharging head includes a pressure chamber partitioning portion that includes a plurality of partitioning walls that partition a pressure chamber in which a pressure to discharge a liquid is applied to the liquid, a diaphragm that includes a wall surface that faces the pressure chamber. The pressure chamber is located between the partitioning walls in a second direction. The wall surface of the diaphragm includes a first portion at a first position, and a second portion. A position of the second portion in the first direction is on an opposite side in the first direction with respect to a position of the first portion in the first direction.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Inventors: Motoki TAKABE, Noritaka MOCHIZUKI, Yoshihiro HOKARI
  • Publication number: 20210268798
    Abstract: A liquid ejecting head includes a diaphragm, a first electrode, a piezoelectric layer, and a second electrode in this order in a first direction, and ejects liquid. The second electrode includes a first portion that is next to the piezoelectric layer in the first direction and is electrically conductive. A length in the first direction is defined as a thickness. One position in a second direction intersecting with the first direction is defined as a first position. Another one position is defined as a second position that is closer to an end of the second electrode in the second direction than the first position is. Given the definition, the thickness of the first portion at the second position is less than the thickness of the first portion at the first position.
    Type: Application
    Filed: March 1, 2021
    Publication date: September 2, 2021
    Inventors: Motoki TAKABE, Masanori MIKOSHIBA, Masaki MORI
  • Patent number: 11072171
    Abstract: Provided is a liquid discharging head including: a nozzle discharging a liquid; a chamber plate having a plurality of pressure chambers, drive elements provided in correspondence with each pressure chamber, and a plurality of lead electrodes for supplying electric signals to the drive elements; and a circuit substrate having terminals coupled to the lead electrodes. A first pressure chamber and a second pressure chamber communicate with the nozzle in common. A first segment electrode is formed so as to overlap the first pressure chamber and is not to overlap the second pressure chamber in plan view. A second segment electrode is formed so as to overlap the second pressure chamber and is not to overlap the first pressure chamber in plan view. The first segment electrode and the second segment electrode are coupled to the same lead electrode.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: July 27, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Shohei Mizuta, Motoki Takabe, Shunya Fukuda, Yoichi Naganuma
  • Publication number: 20210221136
    Abstract: A liquid discharge head to discharge a liquid includes a piezoelectric body, a first electrode layer disposed at least partly on the piezoelectric body in a stacking direction, and a first wiring disposed on the first electrode layer in the stacking direction, the first wiring being more likely to cause ion migration than the first electrode layer, in which the piezoelectric body, the first electrode layer, and the first wiring are stacked in the stacking direction. When a predetermined area on the piezoelectric body is a first area, and a predetermined area adjacent to the first area on the piezoelectric body is a second area, both the first wiring and the first electrode layer are disposed in the first area, and the first wiring is not disposed while the first electrode layer is disposed in the second area.
    Type: Application
    Filed: January 14, 2021
    Publication date: July 22, 2021
    Inventors: Masaki MORI, Motoki TAKABE
  • Patent number: 11046074
    Abstract: The liquid discharge head is configured to switch between a first mode in which the liquid supplied into the common liquid chamber is discharged through the individual flow channel from the outlet and a second mode in which the liquid supplied into the common liquid chamber is discharged from the outlet without passing through the individual flow channel.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: June 29, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Motoki Takabe
  • Patent number: 11043625
    Abstract: A piezoelectric device (an actuator unit) includes the following: a first substrate (a pressure chamber forming substrate, a diaphragm) having a piezoelectric layer and a first wiring conductor (a top electrode layer) that is at least partially stacked on the piezoelectric layer; and a second substrate (a sealing substrate) having a second wiring conductor (a bottom wiring conductor) that faces and is separated from the first wiring conductor (a top electrode layer) and to which an electrical signal different from an electrical signal that is applied to the first wiring conductor (a top electrode layer) is applied. At least one of the first wiring conductor (a top electrode layer) and the second wiring conductor (a bottom wiring conductor) is at least partially covered with an electrically insulating protective layer.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 22, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Katsutomo Tsukahara, Eiju Hirai, Motoki Takabe, Daisuke Yamada, Yasuyuki Matsumoto, Shuichi Tanaka
  • Publication number: 20210167276
    Abstract: A method for producing a piezoelectric actuator including forming a vibration plate, forming a first electrode on the vibration plate, forming a piezoelectric layer on the first electrode, and forming a second electrode on the piezoelectric layer, wherein the forming the vibration plate has a single layer forming step including forming a metal layer containing zirconium by a gas phase method, and forming a metal oxide layer by firing the metal layer, the single layer forming step is repeated, thereby forming the vibration plate in which the metal oxide layers are stacked, and the metal oxide layer has a thickness less than 200 nm.
    Type: Application
    Filed: November 25, 2020
    Publication date: June 3, 2021
    Inventors: Harunobu KOIKE, Takanori AIMONO, Masao NAKAYAMA, Motoki TAKABE, Koji SUMI, Yasuhiro ITAYAMA, Toshihiro SHIMIZU
  • Patent number: 11020973
    Abstract: Provided is a piezoelectric device including: a substrate (10) on which a plurality of recesses (12) are provided; a vibrating plate (50) which is provided on one surface side of the substrate; and a piezoelectric element (300) which is provided over the vibrating plate (50) and on which a first electrode (60), a piezoelectric layer (70), and a second electrode (80) are laminated from the substrate (10) side, in which the first electrode (60) is formed to have a first width which is smaller than a dimension of the recess in a parallel arrangement direction in the parallel arrangement direction of at least one recess (12), and the piezoelectric layer (70) is extended to the outer side of the first electrode (60) in the parallel arrangement direction and has a second width which is greater than the first width and smaller than a width of the recess (12) in the parallel arrangement direction, the vibrating plate (50) contains a zirconium oxide layer (52), and when an area of the zirconium oxide layer (52) corres
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: June 1, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Masao Nakayama, Yasuhiro Itayama, Naoto Yokoyama, Eiju Hirai, Motoki Takabe
  • Publication number: 20210146686
    Abstract: when one position where a distance in the second direction to the partition wall located at a nearest position in the second direction is long is assumed as a first position, and the other position where the distance is short is assumed as a second position, both the piezoelectric body and the vibration plate are provided at the first position and the second position, and a thickness of the vibration plate at the second position is smaller than a thickness of the vibration plate at the first position.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 20, 2021
    Inventors: Motoki TAKABE, Eiju HIRAI, Hiroaki OKUI
  • Publication number: 20210129535
    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: Application
    Filed: December 5, 2017
    Publication date: May 6, 2021
    Inventors: Daisuke YAMADA, Motoki TAKABE, Yasuyiikl MATSUMOTO, Yoichi NAGANUMA, Eiju HIRAI
  • Patent number: 10906311
    Abstract: A flow path formation substrate to which a nozzle plate is mounted includes a pressure chamber per nozzle, an individual supply path leading to the pressure chamber, an individual recovery path communicating with a flow channel near the nozzle. A conduction unit electrically coupled through a lead electrode to a pressure generator causing a pressure of the pressure chamber to vary is located at a position where the conduction unit overlaps with a flow path area of at least one individual flow path of the individual supply path or the individual recovery path in a plan view from a lamination direction in which the nozzle plate and the flow path formation substrate are laminated.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: February 2, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Yuma Fukuzawa, Motoki Takabe, Shunsuke Watanabe, Akira Miyagishi, Shunya Fukuda, Junichi Sano
  • Patent number: 10894408
    Abstract: A liquid discharging head includes a first flow path member comprising a first flow path and a pressure chamber; a second flow path member stacked on the first flow path member and comprising a second flow path; a wiring substrate comprising a connection terminal for electrically connected to a driving element to generate a pressure change in the pressure chamber; and a circulation flow path for circulating the liquid through the pressure chamber. A surface of the first flow path member includes a first region which is stacked on the second flow path member via the wiring substrate and a second region which is stacked on the second flow path member without the wiring substrate. The first flow path and the second flow path are in communication with each other in the second region so as to be the circulation flow path.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: January 19, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Motoki Takabe, Eiju Hirai, Yuma Fukuzawa, Shunya Fukuda
  • Publication number: 20210008882
    Abstract: A liquid ejecting head capable of suppressing an increase in size in a configuration in which a liquid circulates between the liquid ejecting head and a liquid storage portion and a liquid ejecting apparatus are provided. Pressures chambers communicating with nozzles that eject a liquid, a first common flow path through which the liquid is supplied to the pressure chambers side, a second common flow path through which the liquid is led out from the pressure chambers side, a first compliance portion that deforms in response to a pressure change in the liquid inside the first common flow path, and a second compliance portion that deforms in response to a pressure change in the liquid inside the second common flow path are provided. The first compliance portion and the second compliance portion overlap each other when viewed in a thickness direction of at least one of the compliance portions.
    Type: Application
    Filed: December 18, 2018
    Publication date: January 14, 2021
    Inventor: Motoki TAKABE
  • Patent number: 10857790
    Abstract: There is provided a liquid discharge head including a drive IC that outputs the first signal and the second signal, and a wiring substrate having a first side and a second side longer than the first side, electrically connected to the drive IC, and propagating the first signal and the second signal, in which the wiring substrate includes a first electrode to which the first signal is input, a second electrode to which the second signal is input, a third electrode electrically connected to the first electrode, and a fourth electrode electrically connected to the second electrode, and in a direction along the second side, the second electrode is positioned between the first electrode and the third electrode, and the third electrode is positioned between the second electrode and the fourth electrode.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 8, 2020
    Inventors: Osamu Tonomura, Eiju Hirai, Motoki Takabe, Toru Kashimura
  • Patent number: 10850515
    Abstract: A liquid ejecting head including a plurality of pressure chambers in communication with nozzles that eject a liquid, a diaphragm that includes layers including a first layer and a second layer and that constitutes wall surfaces of the plurality of pressure chambers, a plurality of piezoelectric elements formed on a first region of the diaphragm, the piezoelectric elements each being formed to correspond to a corresponding one of the pressure chambers, and a barrier layer that is in contact with an interface between the first layer and the second layer in a second region of the diaphragm, the second region surrounding the first region.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 1, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Takanori Aimono, Masao Nakayama, Motoki Takabe, Hitoshi Takaai