Patents by Inventor Junya Kawase

Junya Kawase 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: 10813203
    Abstract: In an X-ray generating apparatus 101 in which an X-ray tube 102 is anode-grounded to a protruding portion 107c of a container 107, electrical discharge between the X-ray tube 102 and the container 107 is reduced. The container 107 includes the protruding portion 107c in such a way that, in the axial direction Dt, a bent portion 107d is positioned between an anode-side joint portion 128 where the insulating tube 4 and the anode 103 are joined to each other and a cathode-side joint portion 122 where the insulating tube 4 and the cathode 104 are joined to each other.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: October 20, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Kawase, Koji Yamazaki
  • Patent number: 10743396
    Abstract: An X-ray generation apparatus includes an X-ray generation tube including a cathode having an electron emitting portion, and an anode having a target, a voltage supply supplying voltage to the X-ray generation tube via a conductive line, a storage container having a first portion forming a first space storing the voltage supply, a second portion forming a second space storing the X-ray generation tube, and a connecting portion connecting the first portion and the second portion, and an insulating liquid filling internal space of the storage container. The connecting portion includes a convex portion pointed toward the internal space. The cathode is arranged between the convex portion and the anode, and an insulating member is arranged to surround portion of the conductive line and block shortest path between the conductive line and the convex portion.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 11, 2020
    Assignee: CANON ANELVA CORPORATION
    Inventor: Junya Kawase
  • Patent number: 10631390
    Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 21, 2020
    Assignee: CANON ANELVA CORPORATION
    Inventors: Junya Kawase, Yoichi Ando
  • Publication number: 20190150255
    Abstract: In an X-ray generating apparatus 101 in which an X-ray tube 102 is anode-grounded to a protruding portion 107c of a container 107, electrical discharge between the X-ray tube 102 and the container 107 is reduced. The container 107 includes the protruding portion 107c in such a way that, in the axial direction Dt, a bent portion 107d is positioned between an anode-side joint portion 128 where the insulating tube 4 and the anode 103 are joined to each other and a cathode-side joint portion 122 where the insulating tube 4 and the cathode 104 are joined to each other.
    Type: Application
    Filed: September 28, 2017
    Publication date: May 16, 2019
    Inventors: Junya Kawase, Koji Yamazaki
  • Patent number: 10064592
    Abstract: A mammographic CT apparatus includes: a gantry, including a front face plate having an insertion opening for inserting a breast into an accommodation portion; a radiation tube disposed within the gantry; a sensing device disposed within the gantry so as to face the radiation tube, to detect radiation which has been emitted from the radiation tube and been transmitted through the accommodation portion; a driving unit to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the insertion opening, at the same angular speed and same direction; and a collimator configured to rotate around the rotation axis synchronously with the radiation tube and sensing device. The collimator is disposed near the accommodation portion, and an irradiation region of radiation emitted from the radiation tube is restricted such that a breast inserted to the accommodation portion is irradiated to the tip.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: September 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Kawase, Takeo Tsukamoto, Nobuhiro Ito
  • Publication number: 20180242439
    Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Inventors: Junya Kawase, Yoichi Ando
  • Patent number: 9980357
    Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 22, 2018
    Assignee: CANON ANELVA CORPORATION
    Inventors: Junya Kawase, Yoichi Ando
  • Publication number: 20180139828
    Abstract: An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 17, 2018
    Inventors: Junya Kawase, Yoichi Ando
  • Patent number: 9968308
    Abstract: A mammographic CT apparatus includes: a gantry, including a front face plate in which an insertion opening is formed for inserting a breast into an accommodation portion a radiation tube and sensing device disposed within the gantry; a driving unit configured to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the accommodation portion, at the same angular speed and in the same direction; a collimator disposed between the accommodation portion and the radiation tube, and configured to rotate around the rotation axis integrally with the radiation tube and sensing device; and an annular shield disposed between the rotational path of the collimator and the rotational path of the radiation tube, having an annular gap corresponding to the rotational path of the collimator, wherein an edge of the collimator or sensing device is fit into the gap.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: May 15, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Kawase, Takeo Tsukamoto, Nobuhiro Ito
  • Patent number: 9831060
    Abstract: Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Junya Kawase
  • Publication number: 20170316911
    Abstract: Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.
    Type: Application
    Filed: July 7, 2017
    Publication date: November 2, 2017
    Inventor: Junya Kawase
  • Patent number: 9741524
    Abstract: Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: August 22, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Junya Kawase
  • Publication number: 20160242717
    Abstract: A mammographic CT apparatus includes: a gantry, including a front face plate having an insertion opening for inserting a breast into an accommodation portion; a radiation tube disposed within the gantry; a sensing device disposed within the gantry so as to face the radiation tube, to detect radiation which has been emitted from the radiation tube and been transmitted through the accommodation portion; a driving unit to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the insertion opening, at the same angular speed and same direction; and a collimator configured to rotate around the rotation axis synchronously with the radiation tube and sensing device. The collimator is disposed near the accommodation portion, and an irradiation region of radiation emitted from the radiation tube is restricted such that a breast inserted to the accommodation portion is irradiated to the tip.
    Type: Application
    Filed: November 11, 2014
    Publication date: August 25, 2016
    Inventors: Junya KAWASE, Takeo TSUKAMOTO, Nobuhiro ITO
  • Publication number: 20160206253
    Abstract: A mammographic CT apparatus includes: a gantry, including a front face plate in which an insertion opening is formed for inserting a breast into an accommodation portion a radiation tube and sensing device disposed within the gantry; a driving unit configured to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the accommodation portion, at the same angular speed and in the same direction; a collimator disposed between the accommodation portion and the radiation tube, and configured to rotate around the rotation axis integrally with the radiation tube and sensing device; and an annular shield disposed between the rotational path of the collimator and the rotational path of the radiation tube, having an annular gap corresponding to the rotational path of the collimator, wherein an edge of the collimator or sensing device is fit into the gap.
    Type: Application
    Filed: November 11, 2014
    Publication date: July 21, 2016
    Inventors: Junya Kawase, Takeo Tsukamoto, Nobuhiro Ito
  • Publication number: 20160133429
    Abstract: Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.
    Type: Application
    Filed: October 14, 2015
    Publication date: May 12, 2016
    Inventor: Junya Kawase
  • Patent number: 8702215
    Abstract: There is provided an inkjet apparatus capable of adjusting pressure in an inkjet head to a predetermined slightly negative pressure without limitations on the installation location of a pressure adjustment unit and without stopping the flow of liquid. The inkjet apparatus includes an inkjet head for discharging ink droplets and an ink tank for retaining liquid to the inkjet head. The inkjet apparatus further includes a liquid feeding unit communicating with the inkjet head and configured to feed the liquid in the ink tank to the inkjet head by reducing the pressure in the inkjet head, an open-close valve configured to open or close a flow channel connecting the inkjet head and the liquid feeding unit, and a pressure adjustment unit configured to open or close the open-close valve according to a pressure difference between inside and outside of the flow channel to adjust the pressure in the inkjet head.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junya Kawase, Yasuyuki Tamura, Toru Nakakubo
  • Patent number: 8636349
    Abstract: A continuous liquid ejection head collects droplets which are not used for printing (unused droplets) without affecting the flight of droplets which are used for printing (used droplets). An ejection nozzle and a collection nozzle collect an unused droplet by causing a liquid surface to project out from the aperture of the collection nozzle so as to be positioned in the trajectory along which droplets ejected from the ejection nozzle fly, causing the unused droplet to collide and unite with the liquid surface projected from the collection nozzle, and causing the liquid surface to retreat.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: January 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Nakakubo, Yohei Nakamura, Hiroshi Netsu, Hiromitsu Morita, Junya Kawase
  • Patent number: 8529040
    Abstract: A printhead comprises a first ink chamber having an inlet port, to which ink from an ink supply source is supplied, a second ink chamber, to which the ink from the first ink chamber is supplied, a discharge orifice discharging ink from the second ink chamber, a first outlet port discharging fluid from the first ink chamber, a second outlet port discharging fluid from the second ink chamber, and an air-liquid separation unit which restricts liquid ejection and is provided between the first ink chamber and the first outlet port, or/and between the second ink chamber and the second outlet port. Flow resistance from the inlet port to the first outlet port is smaller than flow resistance from the inlet port to the second outlet port.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: September 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Yamamoto, Junya Kawase, Manabu Sueoka, Yohji Ara
  • Publication number: 20130106963
    Abstract: There is provided an inkjet apparatus capable of adjusting pressure in an inkjet head to a predetermined slightly negative pressure without limitations on the installation location of a pressure adjustment unit and without stopping the flow of liquid. The inkjet apparatus includes an inkjet head for discharging ink droplets and an ink tank for retaining liquid to the inkjet head. The inkjet apparatus further includes a liquid feeding unit communicating with the inkjet head and configured to feed the liquid in the ink tank to the inkjet head by reducing the pressure in the inkjet head, an open-close valve configured to open or close a flow channel connecting the inkjet head and the liquid feeding unit, and a pressure adjustment unit configured to open or close the open-close valve according to a pressure difference between inside and outside of the flow channel to adjust the pressure in the inkjet head.
    Type: Application
    Filed: September 12, 2012
    Publication date: May 2, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Junya Kawase, Yasuyuki Tamura, Toru Nakakubo
  • Patent number: D863013
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: October 15, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Tomonori Kawase, Junya Ishikawa