Patents by Inventor Atsushi Hirota

Atsushi Hirota 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: 9925774
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 27, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo Sakaida, Takeshi Asano, Atsushi Hirota
  • Publication number: 20170334206
    Abstract: A liquid discharging apparatus includes: a channel structure having nozzles aligned in a first direction and pressure chambers aligned in the first direction corresponding to the nozzles respectively; piezoelectric elements aligned in the first direction in the channel structure, corresponding to the pressure chambers respectively; a cover covering the piezoelectric elements and having first and second wall portions arranged in a second direction orthogonal to the first direction and joined to the channel structure at first and second joint regions respectively; and traces being extended to one side in the second direction from the piezoelectric elements respectively, passing through the first region, and extending up to outside of the cover. An area of the first joint region is greater than an area of the second region.
    Type: Application
    Filed: August 9, 2017
    Publication date: November 23, 2017
    Inventors: Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Patent number: 9815283
    Abstract: A liquid discharging apparatus includes: a channel structure having nozzles aligned in a first direction and pressure chambers aligned in the first direction corresponding to the nozzles respectively; piezoelectric elements aligned in the first direction in the channel structure, corresponding to the pressure chambers respectively; a cover covering the piezoelectric elements and having first and second wall portions arranged in a second direction orthogonal to the first direction and joined to the channel structure at first and second joint regions respectively; and traces being extended to one side in the second direction from the piezoelectric elements respectively, passing through the first region, and extending up to outside of the cover. An area of the first joint region is greater than an area of the second region.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: November 14, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Patent number: 9718271
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: August 1, 2017
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo Sakaida, Takeshi Asano, Atsushi Hirota
  • Patent number: 9656467
    Abstract: There is provided a piezoelectric actuator including: a plurality of piezoelectric elements forming first and second piezoelectric element rows, and including first, second electrodes and piezoelectric portion; an electrode conductive portion; a contact section; a plurality of drive wires; and conductive wires. A part of the drive wires corresponding to the piezoelectric elements of the second piezoelectric element row are extended toward the contact section while passing between two adjacent piezoelectric elements of the first piezoelectric element row which are adjacent in the first direction. The conductive wires are arranged between two adjacent piezoelectric elements of the second piezoelectric element row, each of the conductive wires is conducted, at two locations thereof apart in the second direction, with the electrode conductive portion.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: May 23, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toru Kakiuchi, Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Patent number: 9579891
    Abstract: A liquid jetting apparatus includes: a flow passage structure having nozzles aligned in a first direction, pressure chambers aligned in the first direction to correspond respectively to the nozzles, and a vibration film covering the pressure chambers; piezoelectric elements arranged on the vibration film to correspond respectively to the pressure chambers; and traces extending along a planar direction of the vibration film to correspond respectively to the piezoelectric elements. Each of the piezoelectric elements has a piezoelectric film arranged to cover the pressure chambers, and an individual electrode provided on the piezoelectric film to face a central portion of one of the pressure chambers and extending in a second direction intersecting the first direction. Within each area, of the vibration film, facing one of the pressure chambers, each of the traces extends from a connecting portion of the individual electrode along a third direction intersecting the second direction.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: February 28, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Publication number: 20160361922
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Application
    Filed: August 26, 2016
    Publication date: December 15, 2016
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo SAKAIDA, Takeshi ASANO, Atsushi HIROTA
  • Publication number: 20160347063
    Abstract: A liquid discharging apparatus includes: a channel structure having nozzles aligned in a first direction and pressure chambers aligned in the first direction corresponding to the nozzles respectively; piezoelectric elements aligned in the first direction in the channel structure, corresponding to the pressure chambers respectively; a cover covering the piezoelectric elements and having first and second wall portions arranged in a second direction orthogonal to the first direction and joined to the channel structure at first and second joint regions respectively; and traces being extended to one side in the second direction from the piezoelectric elements respectively, passing through the first region, and extending up to outside of the cover. An area of the first joint region is greater than an area of the second region.
    Type: Application
    Filed: April 7, 2016
    Publication date: December 1, 2016
    Inventors: Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Publication number: 20160243831
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Application
    Filed: May 5, 2016
    Publication date: August 25, 2016
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo SAKAIDA, Takeshi ASANO, Atsushi HIROTA
  • Patent number: 9419200
    Abstract: There is provided a piezoelectric actuator configured to displace to project toward a pressure chamber to apply pressure to a liquid inside the pressure chamber, the piezoelectric actuator including: a vibration plate having a compressive stress; a piezoelectric layer having a pulling stress; and an individual electrode. The compressive stress of the vibration plate has a magnitude which is not less than a threshold value at which an extreme point is generated in a relationship between a compliance of the piezoelectric actuator and a displacement volume of the pressure chamber in a case that an electric voltage is applied to the piezoelectric actuator, the displacement volume converting from increasing to decreasing relative to increase in the compliance at the extreme point; and the thickness of the piezoelectric actuator is not less than a first thickness corresponding to a compliance allowing the extreme point to generate.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 16, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Atsushi Hirota
  • Publication number: 20160207312
    Abstract: A liquid jetting apparatus includes: a flow passage structure having nozzles aligned in a first direction, pressure chambers aligned in the first direction to correspond respectively to the nozzles, and a vibration film covering the pressure chambers; piezoelectric elements arranged on the vibration film to correspond respectively to the pressure chambers; and traces extending along a planar direction of the vibration film to correspond respectively to the piezoelectric elements. Each of the piezoelectric elements has a piezoelectric film arranged to cover the pressure chambers, and an individual electrode provided on the piezoelectric film to face a central portion of one of the pressure chambers and extending in a second direction intersecting the first direction. Within each area, of the vibration film, facing one of the pressure chambers, each of the traces extends from a connecting portion of the individual electrode along a third direction intersecting the second direction.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 21, 2016
    Inventors: Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Publication number: 20160185116
    Abstract: There is provided a piezoelectric actuator including: a plurality of piezoelectric elements forming first and second piezoelectric element rows, and including first, second electrodes and piezoelectric portion; an electrode conductive portion; a contact section; a plurality of drive wires,; and conductive wires. A part of the drive wires corresponding to the piezoelectric elements of the second piezoelectric element row are extended toward the contact section while passing between two adjacent piezoelectric elements of the first piezoelectric element row which are adjacent in the first direction. The conductive wires are arranged between two adjacent piezoelectric elements of the second piezoelectric element row, each of the conductive wires is conducted, at two locations thereof apart in the second direction, with the electrode conductive portion.
    Type: Application
    Filed: December 24, 2015
    Publication date: June 30, 2016
    Inventors: Toru Kakiuchi, Hideki Hayashi, Keita Hirai, Atsushi Hirota
  • Publication number: 20160142744
    Abstract: According to one embodiment, a transmission apparatus including, a control information generator for generating channel select control information indicative of configuration information for transmission, the configuration information comprising content included in a first video signal transmitted via a different transmission path than a second video signal, and a multiplexer that multiplexes the second video signal and the channel select control information, the second video signal obtained based at least in part on a base video signal, the second video signal corresponding to the channel select control information.
    Type: Application
    Filed: October 15, 2015
    Publication date: May 19, 2016
    Inventors: Atsushi HIROTA, Masahiro YAMADA
  • Publication number: 20150273830
    Abstract: There is provided a piezoelectric actuator configured to displace to project toward a pressure chamber to apply pressure to a liquid inside the pressure chamber, the piezoelectric actuator including: a vibration plate having a compressive stress; a piezoelectric layer having a pulling stress; and an individual electrode. The compressive stress of the vibration plate has a magnitude which is not less than a threshold value at which an extreme point is generated in a relationship between a compliance of the piezoelectric actuator and a displacement volume of the pressure chamber in a case that an electric voltage is applied to the piezoelectric actuator, the displacement volume converting from increasing to decreasing relative to increase in the compliance at the extreme point; and the thickness of the piezoelectric actuator is not less than a first thickness corresponding to a compliance allowing the extreme point to generate.
    Type: Application
    Filed: March 20, 2015
    Publication date: October 1, 2015
    Inventor: Atsushi HIROTA
  • Publication number: 20150239244
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Application
    Filed: May 8, 2015
    Publication date: August 27, 2015
    Inventors: Atsuo SAKAIDA, Takeshi ASANO, Atsushi HIROTA
  • Patent number: 9114616
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 25, 2015
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo Sakaida, Takeshi Asano, Atsushi Hirota
  • Patent number: 9056469
    Abstract: A printhead module includes a plurality of rows of printhead nozzles, at least some of the rows including at least one displaced row portion, the displacement of the row portion including a component in a direction normal to that of a pagewidth to be printed, wherein the displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: June 16, 2015
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Atsuo Sakaida, Takeshi Asano, Atsushi Hirota
  • Patent number: 8985731
    Abstract: A liquid ejection apparatus includes feeding mechanism that feeds a recording medium in a first direction, a head including nozzles that eject liquid; and a humidifying mechanism. The humidifying mechanism includes a humidified air generating device that generates humidified air, an output portion that outputs the humidified air generated by the humidified air generating device, and a receiving portion that receives the humidified air output from the output portion. The output portion includes a first opening and a second opening. An area of the second opening is greater than an area of the first opening, and the first opening is separated from the second opening in a second direction perpendicular to the first direction. The head is disposed between the output portion and the receiving portion in the first direction.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: March 24, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Seiji Shimizu, Yoshihumi Suzuki, Atsushi Hirota
  • Patent number: 8984302
    Abstract: According to one embodiment, a first processor of an information processing apparatus switches between a secure mode and a non-secure mode and reports its mode. When the first processor is in the secure mode, a second processor accesses to a protected area of a storage module. A boot program for the first processor and a program which activates the first processor in the non-secure mode are verified. Furthermore, a program which activates the first processor in the secure mode is encrypted, and its decryption key is stored in the protected area of the storage module.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Isozaki, Atsushi Hirota
  • Patent number: 8864265
    Abstract: A liquid ejection apparatus includes a liquid ejection head including a plurality of ejection opening groups each constituted by two or more ejection openings and each forming one pixel by at least two liquid droplets ejected from the two or more ejection openings; a plurality of individual channels respectively connecting the plurality of ejection opening groups to a plurality of pressure chambers; a nozzle plate through which a plurality of nozzle holes extend; and an energy-applying portion applying energy to liquid in the plurality of pressure chambers, and a controller controlling the energy-applying portion. The controller controls the energy-applying portion in such a manner as to meet the following inequations: 0.85Ta?T?0.9Ta or 1.2Ta?T in a case of p/D?1.2, and 0.85Ta?T in a case of p/D>1.2.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: October 21, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Keita Hirai, Atsushi Hirota