Patents by Inventor Makoto Sakurai

Makoto Sakurai 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: 20130257995
    Abstract: A liquid discharge apparatus includes: a liquid discharge head which includes; a discharge port to discharge a liquid; and a substrate including: an energy generating element for generating thermal energy to discharge the liquid from the liquid discharge port; a pair of electrodes connected to the energy generating element for driving thereof; an insulating layer of an insulating material provided to cover the energy generating element; and a metal layer of a metal material provided corresponding to the energy generating element to cover the insulating layer; and a driver unit which sets a first potential of one of the pair of electrodes substantially equal to the potential of the liquid and a second potential of the other one of the pair of electrodes lower than the first potential to drive the energy generating element.
    Type: Application
    Filed: November 18, 2011
    Publication date: October 3, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Makoto Sakurai, Hirokazu Komuro, Ichiro Saito, Yuzuru Ishida, Takeru Yasuda
  • Patent number: 8541738
    Abstract: A surface analyzer 1 includes: a sample stage 6 for placing a sample 5; a source for generating multicharged ions 3 for irradiating a beam 4 of multicharged ions having a valence of 15 or higher to the sample 5 placed on the sample stage 6; a mass analyzer 8 for detecting secondary ions 7 generated as a result of irradiating the beam of multicharged ions 4 to the sample 5; a secondary electron detector 10 for detecting secondary electrons 9 generated as a result of irradiating the beam of multicharged ions 4 to the sample 5; and a controller of mass analyzer 12 for generating analysis start signals in response to the secondary electron signals received, and transmitting the start signals to the mass analyzer. The surface analyzer 1 enables high-quality analysis of the surface of the sample in short time by using the multicharged ions.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: September 24, 2013
    Assignees: Japan Science and Technology Agency, The University of Electro-Communications, National University Corporation Kobe University
    Inventors: Masahide Tona, Shunsuke Ohtani, Makoto Sakurai
  • Publication number: 20120307167
    Abstract: A polarization separating element is configured to include a translucent substrate formed of a crystal material having birefringent properties and optically rotatory power and a polarization separating portion formed on the incidence-side surface of the translucent substrate so as to transmit a P-polarized light beam and reflect an S-polarized light beam. A reflecting element that reflects the S-polarized light beam reflected by the polarization separating portion is disposed so as to be separated approximately in parallel to the translucent substrate. A predetermined function is set such that the P-polarized light beam having passed through the polarization separating portion and been incident to the translucent substrate is converted so as to be parallel to the polarization plane of the S-polarized light beam so that the P-polarized light beam is output as the S-polarized light beam.
    Type: Application
    Filed: May 29, 2012
    Publication date: December 6, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shuho KOBAYASHI, Mitsuru MIYABARA, Makoto SAKURAI
  • Patent number: 8241510
    Abstract: A method for producing an inkjet recording head includes preparing the substrate having a through hole to be formed into a supply port, the through hole having openings on the first surface and the second surface, the substrate having a first protective layer disposed on the second surface, the first protective layer having an overhang extending into the region of the opening on the second surface. The method also includes forming a second protective layer so as to continuously cover at least the overhang of the first protective layer and the inner wall of the through hole, and removing a portion of the second protective layer corresponding to the opening on the first surface.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: August 14, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Sakurai
  • Publication number: 20120188471
    Abstract: A polarization separation device includes a transmissive substrate formed of crystalline material having a birefringent property and an optical rotatory property, and a polarization separation portion that is provided on an incidence-side surface of the transmissive substrate and transmits P-polarized light and reflects S-polarized light. A reflective element, which reflects the S-polarized light reflected by the polarization separation portion, is disposed substantially in parallel with the transmissive substrate. A phase difference plate is disposed at an emission-side of the transmissive substrate.
    Type: Application
    Filed: December 7, 2011
    Publication date: July 26, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shuho KOBAYASHI, Mitsuru MIYABARA, Makoto SAKURAI
  • Publication number: 20120061564
    Abstract: A surface analyzer 1 includes: a sample stage 6 for placing a sample 5; a source for generating multicharged ions 3 for irradiating a beam 4 of multicharged ions having a valence of 15 or higher to the sample 5 placed on the sample stage 6; a mass analyzer 8 for detecting secondary ions 7 generated as a result of irradiating the beam of multicharged ions 4 to the sample 5; a secondary electron detector 10 for detecting secondary electrons 9 generated as a result of irradiating the beam of multicharged ions 4 to the sample 5; and a controller of mass analyzer 12 for generating analysis start signals in response to the secondary electron signals received, and transmitting the start signals to the mass analyzer. The surface analyzer 1 enables high-quality analysis of the surface of the sample in short time by using the multicharged ions.
    Type: Application
    Filed: April 7, 2009
    Publication date: March 15, 2012
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
    Inventors: Masahide Tona, Shunsuke Ohtani, Makoto Sakurai
  • Publication number: 20110239462
    Abstract: A method of manufacturing a liquid discharging head which includes a flow path forming member which has a discharge port for discharging a liquid and a liquid flow path communicating with the discharge port, and a base body having a liquid supply port which supplies the liquid flow path with the liquid, the method includes (1) forming a mold of the liquid flow path and a foundation member formed of a porous inorganic material over the base body, (2) applying an organic resin over the base body so as to cover the mold and the foundation member to form the flow path forming member, (3) forming the discharge port in the flow path forming member to form the liquid supply port in the base body, and (4) removing the mold to form the liquid flow path.
    Type: Application
    Filed: March 9, 2011
    Publication date: October 6, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ichiro Saito, Makoto Sakurai, Takahiro Matsui, Yuzuru Ishida
  • Publication number: 20110192498
    Abstract: A manufacturing method for a liquid-discharge head substrate including a base material provided with an energy generating element that generates energy utilized for discharging liquid, a noble metal layer including noble metal provided on a surface of the base material on energy generating element side, and a material layer provided to come into contact with the noble metal layer. The manufacturing method includes preparing the base material on which the material layer is provided, oxidizing a part of a surface of the material layer by discharging electricity in oxygen-containing gas, and providing the noble metal layer on the base material.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 11, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Makoto Sakurai, Ichiro Saito, Takahiro Matsui, Yuzuru Ishida
  • Patent number: 7980656
    Abstract: On a liquid ejection head substrate, an upper protective layer, as well as coming into contact with a resin layer of a path forming member having an ejection opening, comes into contact with ink in a heat generating portion inside the channel formed. The upper protective layer contains iridium and silicon. The upper protective layer is configured so that, at a surface in contact with the ink and resin layer, Ir100-XSiX attains a 15 at. %?X?30 at. % silicon content rate, and that X approaches zero as a position in the upper protective layer approaches an adhesion layer. As a result, at the interface where the upper protective layer comes into contact with the path forming member, by the silicon attaining the heretofore described content rate, it is possible to improve the adhesion with the path forming member made of resin compared with a case of using iridium alone.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: July 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Sakurai, Ichiro Saito
  • Publication number: 20100245486
    Abstract: A recording element substrate includes a substrate; an insulating layer disposed on the substrate; a plurality of heating portions which are arranged on the insulating layer and which produce thermal energy used to eject a liquid; and a plurality of heat conduction members, each being located between adjacent heating portions with respect to an arrangement direction of the heating portions, the heat conduction members being located between the substrate side principal surface of the insulating layer and the heating portion side principal surface of the insulating layer and having higher thermal conductivity than the insulating layer. The heat conduction members are in contact with a heat conduction layer which has higher thermal conductivity than the insulating layer.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 30, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuzuru Ishida, Hirokazu Komuro, Ichiro Saito, Makoto Sakurai, Takahiro Matsui
  • Publication number: 20090315954
    Abstract: On the liquid ejection head substrate, an upper protective layer, as well as coming into contact with the resin layer which configures a path forming member such as a ejection opening, comes into contact with ink in an heat generating portion inside the channel formed. The upper protective layer contains iridium and silicon. The upper protective layer is configured so that, at a surface in contact with the ink and resin layer, Ir100-xSix attains a 15 at. %?X?30 at. % silicon content rate, and that X more becomes zero as a position in the upper protective layer more approaches an adhesion layer. As a result, at the interface where the upper protective layer comes into contact with the path forming member, by the silicon attaining the heretofore described content rate, it is possible to improve the adhesion with the path forming member made of resin compared with a case of using iridium alone.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Makoto Sakurai, Ichiro Saito
  • Patent number: 7544952
    Abstract: A multicharged ions generating source that is easy to manufacture, excellent in controllability and maintainability, high in degree of ionization and large in beam intensity and a charged particle beam apparatus using the same are disclosed. The multicharged ions generating source includes an ion source electrode (3) comprising an electron source (4), a drift tube (5) that constitutes an ion trapping region and a collector (6), a superconducting magnet (11) for ion entrapment, an ion infeed means (20, 22), a first vacuum chamber (2) receiving the ion source electrode (3), a second vacuum chamber (10) receiving the superconducting magnet (11), and a vacuum pumping unit (15, 16) provided for each of the first and second vacuum chambers. The first and the second vacuum chambers (2) and (10) are made removable from each other, and only the ion source electrode (3) to be held at extremely high vacuum can be baked for degassing.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: June 9, 2009
    Assignee: Japan Science and Technology Agency
    Inventors: Makoto Sakurai, Fumiharu Nakajima, Takunori Fukumoto, Nobuyuki Nakamura, Shunsuke Ohtani, Shinro Mashiko
  • Publication number: 20080173616
    Abstract: A method for producing an inkjet recording head includes preparing the substrate having a through hole to be formed into a supply port, the through hole having openings on the first surface and the second surface, the substrate having a first protective layer disposed on the second surface, the first protective layer having an overhang extending into the region of the opening on the second surface. The method also includes forming a second protective layer so as to continuously cover at least the overhang of the first protective layer and the inner wall of the through hole, and removing a portion of the second protective layer corresponding to the opening on the first surface.
    Type: Application
    Filed: January 21, 2008
    Publication date: July 24, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Makoto Sakurai
  • Publication number: 20080087842
    Abstract: A multicharged ions generating source that is easy to manufacture, excellent in controllability and maintainability, high in degree of ionization and large in beam intensity and a charged particle beam apparatus using the same are disclosed. The multicharged ions generating source includes an ion source electrode (3) comprising an electron source (4), a drift tube (5) that constitutes an ion trapping region and a collector (6), a superconducting magnet (11) for ion entrapment, an ion infeed means (20, 22), a first vacuum chamber (2) receiving the ion source electrode (3), a second vacuum chamber (10) receiving the superconducting magnet (11), and a vacuum pumping unit (15, 16) provided for each of the first and second vacuum chambers. The first and the second vacuum chambers (2) and (10) are made removable from each other, and only the ion source electrode (3) to be held at extremely high vacuum can be baked for degassing.
    Type: Application
    Filed: April 8, 2005
    Publication date: April 17, 2008
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Makoto Sakurai, Fumiharu Nakajima, Takunori Fukumoto, Nobuyuki Nakamura, Shunsuke Ohtani, Shinro Mashiko
  • Patent number: 6707070
    Abstract: A wavelength-tunable light emitting device includes a substrate having an atomic-scale structure formed on a surface thereof, a needle member for locally applying a voltage through a vacuum space or a transparent insulating member to the substrate to cause a tunnel current to flow through the atomic-scale structure, and a variable-voltage power supply capable of varying voltage applied across the gap between the substrate and the needle member. The gap between the first member and the second member is as close as a few nm in length. A tunnel current flows from the tip of the needle member to the atomic-scale structure when a predetermined voltage is applied across the gap between the substrate and the needle member; and light is emitted from a tunneling region in which the tunnel current flows, because of an optical transition between respective localized states of the substrate and the needle.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: March 16, 2004
    Assignee: Riken
    Inventors: Makoto Sakurai, Masakazu Aono
  • Publication number: 20020179915
    Abstract: A wavelength-tunable light emitting device includes a substrate having an atomic-scale structure formed on a surface thereof, a needle member for locally applying a voltage through a vacuum space or a transparent insulating member to the substrate to cause a tunnel current to flow through the atomic-scale structure, and a variable-voltage power supply capable of varying voltage applied across the gap between the substrate and the needle member. The gap between the first member and the second member is as close as a few nm in length. A tunnel current flows from the tip of the needle member to the atomic-scale structure when a predetermined voltage is applied across the gap between the substrate and the needle member; and light is emitted from a tunneling region in which the tunnel current flows, because of an optical transition between respective localized states of the substrate and the needle.
    Type: Application
    Filed: April 10, 2002
    Publication date: December 5, 2002
    Inventors: Makoto Sakurai, Masakazu Aono
  • Patent number: 4917299
    Abstract: A spray nozzle for spraying anti-termite agent has a base portion including a supply portion having a generally cylindrical shape and being formed with one or a plurality of jetting ports at one side end in the axial direction of the supply portion, and a horn portion having one end portion attached to the jetting ports side of the base portion. The horn portion has a plurality of air suction holes peripherally at an adjacent position where the jetting ports are situated about the axial direction thereof, and air is sucked by utilizing the Venturi effect of jet streams of the agent in order to spray the agent in bubble form.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: April 17, 1990
    Assignee: Shinto Paint Co., Ltd.
    Inventors: Osamu Kondo, Makoto Sakurai, Yoshihiro Toyonaga, Kazuhito Hokada