Patents by Inventor Kazuhiro Sando
Kazuhiro Sando 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).
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Patent number: 9818571Abstract: An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.Type: GrantFiled: November 24, 2015Date of Patent: November 14, 2017Assignee: Canon Kabushiki KaishaInventors: Takashi Shiozawa, Kazuya Tsujino, Koichi Tsunoda, Nobuhiro Ito, Kazuhiro Sando, Yoichi Ikarashi
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Patent number: 9653252Abstract: Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.Type: GrantFiled: December 3, 2015Date of Patent: May 16, 2017Assignee: Canon Kabushiki KaishaInventors: Yoshihiro Yanagisawa, Yasue Sato, Noritaka Ukiyo, Kazuhiro Sando
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Patent number: 9514910Abstract: In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.Type: GrantFiled: January 8, 2015Date of Patent: December 6, 2016Assignee: Canon Kabushiki KaishaInventors: Yoshihiro Yanagisawa, Kazuhiro Sando, Koichi Tsunoda
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Patent number: 9508524Abstract: A radiation generating apparatus of the present invention includes an envelope 1 including a first window 2 allowing radiation to pass; a radiation tube 10 that is accommodated in the envelope 1, and includes a second window 15 allowing radiation to pass, at a position opposite to the first window 2; a radiation passing hole 21 that is thermally connected to the second window 15 and communicates with the second window 15; and a radiation shielding member 16 protruding from the second window 15 toward the first window 2. In this apparatus, a thermally conductive member 17 having a higher thermal conductivity than the radiation shielding member 16 is connected to an outer periphery of the protruding portion of the radiation shielding member 16. The simple configuration can shield unnecessary radiation, and cool the target, while facilitating reduction in weight.Type: GrantFiled: July 11, 2012Date of Patent: November 29, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Yoshihiro Yanagisawa, Kazuyuki Ueda, Ichiro Nomura, Miki Tamura, Shuji Aoki, Kazuhiro Sando
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Patent number: 9401259Abstract: Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.Type: GrantFiled: June 2, 2014Date of Patent: July 26, 2016Assignee: Canon Kabushiki KaishaInventors: Noritaka Ukiyo, Yasue Sato, Yoshihiro Yanagisawa, Kazuhiro Sando
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Publication number: 20160155598Abstract: An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.Type: ApplicationFiled: November 24, 2015Publication date: June 2, 2016Inventors: Takashi Shiozawa, Kazuya Tsujino, Koichi Tsunoda, Nobuhiro Ito, Kazuhiro Sando, Yoichi Ikarashi
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Publication number: 20160086761Abstract: Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Inventors: Yoshihiro Yanagisawa, Yasue Sato, Noritaka Ukiyo, Kazuhiro Sando
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Patent number: 9230774Abstract: Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.Type: GrantFiled: April 22, 2014Date of Patent: January 5, 2016Assignee: Canon Kabushiki KaishaInventors: Yoshihiro Yanagisawa, Yasue Sato, Noritaka Ukiyo, Kazuhiro Sando
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Publication number: 20150201482Abstract: In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.Type: ApplicationFiled: January 8, 2015Publication date: July 16, 2015Inventors: Yoshihiro Yanagisawa, Kazuhiro Sando, Koichi Tsunoda
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Patent number: 9029795Abstract: A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.Type: GrantFiled: January 14, 2014Date of Patent: May 12, 2015Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Sando, Noritaka Ukiyo, Yasue Sato, Yoshihiro Yanagisawa
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Publication number: 20140369470Abstract: Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.Type: ApplicationFiled: June 2, 2014Publication date: December 18, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Noritaka Ukiyo, Yasue Sato, Yoshihiro Yanagisawa, Kazuhiro Sando
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Publication number: 20140362974Abstract: Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.Type: ApplicationFiled: April 22, 2014Publication date: December 11, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yoshihiro Yanagisawa, Yasue Sato, Noritaka Ukiyo, Kazuhiro Sando
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Publication number: 20140203183Abstract: A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.Type: ApplicationFiled: January 14, 2014Publication date: July 24, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kazuhiro Sando, Noritaka Ukiyo, Yasue Sato, Yoshihiro Yanagisawa
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Publication number: 20140140486Abstract: A radiation generating apparatus of the present invention includes an envelope 1 including a first window 2 allowing radiation to pass; a radiation tube 10 that is accommodated in the envelope 1, and includes a second window 15 allowing radiation to pass, at a position opposite to the first window 2; a radiation passing hole 21 that is thermally connected to the second window 15 and communicates with the second window 15; and a radiation shielding member 16 protruding from the second window 15 toward the first window 2. In this apparatus, a thermal conducting member 17 having a higher thermal conductivity than the radiation shielding member 16 is connected to an outer periphery of the protruding portion of the radiation shielding member 16. The simple configuration can shield unnecessary radiation, and cool the target, while facilitating reduction in weight.Type: ApplicationFiled: July 11, 2012Publication date: May 22, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yoshihiro Yanagisawa, Kazuyuki Ueda, Ichiro Nomura, Miki Tamura, Shuji Aoki, Kazuhiro Sando
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Patent number: 8466430Abstract: An electrostatic lens includes multiple electrodes each having a through hole, and an insulating spacer that is provided between the electrodes and that fixes an interval between the electrodes. Both surfaces of the spacer are bonded with the electrodes opposing each other so that the spacer is integral with both the electrodes. A protective film is disposed on both surfaces of each of the electrodes. The protective film is present on the interior wall of the through hole and in a region around the through hole on the surface of the electrode. The region extends continuously from the interior wall to an end portion of the electrode. The protective film is not present at an interface between the electrode and the spacer.Type: GrantFiled: October 2, 2012Date of Patent: June 18, 2013Assignee: Canon Kabushiki KaishaInventor: Kazuhiro Sando
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Patent number: 7482742Abstract: An electron source substrate including: a substrate; an electron-emitting device having a pair of device electrodes locating on the substrate and an electroconductive thin film which is provided between the device electrodes and has an electron-emitting region; and an antistatic film which is come into contact with at least the pair of device electrodes and covers over an exposed surface of the substrate, wherein a leakage current flowing between the device electrodes in a non-driving mode at a low voltage is suppressed. A high-impedance portion which obstructs the current caused across the pair of device electrodes through the antistatic film is provided in the antistatic film.Type: GrantFiled: February 25, 2005Date of Patent: January 27, 2009Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Sando, Kunio Takada
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Patent number: 7442405Abstract: A novel process for producing an electron source substrate is disclosed for formation of electron-emitting element at high efficiency with less shape irregularity. In the process, the region for electroconductive film formation is divided into plural subregions on which an electroconductive film is formed respectively. In forming the electroconductive film by application of plural liquids, the time interval between the application of the two drops is controlled to be larger than the time length necessary for suppressing the spreading of the succeedingly applied liquid within an allowable limit.Type: GrantFiled: May 26, 2004Date of Patent: October 28, 2008Assignee: Canon Kabushiki KaishaInventors: Masahiko Miyamoto, Mitsutoshi Hasegawa, Kazuhiro Sando, Kazuya Shigeoka
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Publication number: 20050200259Abstract: An electron source substrate including: a substrate; an electron-emitting device having a pair of device electrodes locating on the substrate and an electroconductive thin film which is provided between the device electrodes and has an electron-emitting region; and an antistatic film which is come into contact with at least the pair of device electrodes and covers over an exposed surface of the substrate, wherein a leakage current flowing between the device electrodes in a non-driving mode at a low voltage is suppressed. A high-impedance portion which obstructs the current caused across the pair of device electrodes through the antistatic film is provided in the antistatic film.Type: ApplicationFiled: February 25, 2005Publication date: September 15, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Kazuhiro Sando, Kunio Takada
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Patent number: 6815001Abstract: A method of manufacturing an electronic device including a step of giving a droplet 12 of a liquid containing a formation material of a member that constitutes the electronic device to a plurality of portions on a substrate 1 while said substrate 1 and a droplet ejecting portion 7 are moved relatively in an in-surface direction of said substrate 1, wherein the droplet 12 is given while a position on a droplet given surface to which the droplet is given is corrected in accordance with the distribution of distances between the ejecting portion 7 and the droplet 12 given surface on the substrate which occurs when the substrate 1 and the ejecting portion 7 are relatively moved. Thereby forming the member constituting the electronic device accurately at the plural portion on the substrate 1, and thus forming plural electronic device of same charactoristics.Type: GrantFiled: December 11, 2000Date of Patent: November 9, 2004Assignee: Canon Kabushiki KaishaInventors: Seiji Mishima, Toshifumi Yoshioka, Mitsutoshi Hasegawa, Kazuhiro Sando, Kazuya Shigeoka
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Publication number: 20040213897Abstract: A novel process for producing an electron source substrate is disclosed for formation of electron-emitting element at high efficiency with less shape irregularity. In the process, the region for electroconductive film formation is divided into plural subregions on which an electroconductive film is formed respectively. In forming the electroconductive film by application of plural liquids, the time interval between the application of the two drops is controlled to be larger than the time length necessary for suppressing the spreading of the succeedingly applied liquid within an allowable limit.Type: ApplicationFiled: May 26, 2004Publication date: October 28, 2004Applicant: CANON KABUSHIKI KAISHAInventors: Masahiko Miyamoto, Mitsutoshi Hasegawa, Kazuhiro Sando, Kazuya Shigeoka