Patents by Inventor Kazumi Nagano

Kazumi Nagano 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: 7595493
    Abstract: A radiation detecting apparatus includes a sensor panel 100, a phosphor layer 111 formed on the sensor panel 100 to convert a radiation into light, and a phosphor protecting member 110 covering the phosphor layer 111 to adhere closely to the phosphor protecting member 110. The phosphor protecting member 110 includes a phosphor protecting layer 116 made of vapor deposition polymerization polyimide formed by vapor deposition polymerization, a reflecting layer 113 reflecting the light converted by the phosphor layer 111, and a protecting layer 117 made of vapor deposition polymerization polyurea formed by the vapor deposition polymerization. By such a configuration, a polymerization reaction of the phosphor protecting layer 116 is performed on the substrate. Thereby, the generation of by-products is suppressed to make it easy to acquire the uniformity of film quality.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: September 29, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Okada, Yoshihiro Ogawa, Masato Inoue, Kazumi Nagano, Shinichi Takeda, Tomoyuki Tamura
  • Publication number: 20090200479
    Abstract: A radiation detection apparatus includes an optical detector disposed on a substrate and having a plurality of photoelectric conversion elements which convert light into an electrical signal, and a scintillator layer disposed on the optical detector and having a columnar crystal structure which converts radiation into light, wherein the concentration of an activator of the scintillator layer is higher at the radiation-incident side opposite the optical detector and is lower at the optical detector side. The scintillator panel includes the substrate and the scintillator layer disposed on the substrate, wherein the concentration of the activator of the scintillator layer is higher at the radiation-incident side and is lower at the light-emission side.
    Type: Application
    Filed: April 17, 2009
    Publication date: August 13, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Keiichi Nomura, Kazumi Nagano, Yoshihiro Ogawa, Satoshi Okada
  • Patent number: 7538330
    Abstract: A radiation detection apparatus includes an optical detector disposed on a substrate and having a plurality of photoelectric conversion elements which convert light into an electrical signal, and a scintillator layer disposed on the optical detector and having a columnar crystal structure which converts radiation into light, wherein the concentration of an activator of the scintillator layer is higher at the radiation-incident side opposite the optical detector and is lower at the optical detector side. The scintillator panel includes the substrate and the scintillator layer disposed on the substrate, wherein the concentration of the activator of the scintillator layer is higher at the radiation-incident side and is lower at the light-emission side.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: May 26, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keiichi Nomura, Kazumi Nagano, Yoshihiro Ogawa, Satoshi Okada
  • Patent number: 7514686
    Abstract: A radiation detecting apparatus includes a substrate 1, a scintillator layer 7 converting a radiation into light, and scintillator protection members 8, 9 and 10 to cover the scintillator layer 7, wherein the scintillator protection member includes a scintillator protection layer 8 consisting of a hot-melt resin, and the scintillator protection layer 8 touches the scintillator layer 7. As the substrate 1, there is provided a sensor panel including a photoreceiving layer 15 on which photoelectric conversion elements 2, receiving light, are arranged in a two-dimension array, and a protection layer 5 provided on the photoreceiving layer 15 and touching the scintillator layer 7 and the scintillator protection layer 8. By using such a scintillator protection layer, a film formation time of the scintillator protection layer can be shortened, and the film thickness dispersion of the scintillator protection layer can be suppressed.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: April 7, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiro Ogawa, Satoshi Okada, Tomoyuki Tamura, Shinichi Takeda, Kazumi Nagano, Masato Inoue, Katsuro Takenaka
  • Publication number: 20090061555
    Abstract: An underlayer of a phosphor layer is disposed on a sensor panel including two-dimensionally arranged photoelectric conversion devices. The surface of the underlayer is subjected to atmospheric pressure plasma treatment. The phosphor layer is formed on the surface-treated underlayer. Then, the phosphor layer is covered with a moisture-resistant protective layer, a reflection layer, and another protective layer. Thus, the phosphor layer is prevented from peeling due to adhesion failure, and is constituted of uniformly shaped crystals by vapor deposition. A resulting radiation detecting apparatus exhibits high sensitivity and high definition, producing a uniform photoelectric conversion efficiency.
    Type: Application
    Filed: October 28, 2008
    Publication date: March 5, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kazumi Nagano
  • Publication number: 20080308739
    Abstract: A radiation detecting apparatus includes: a sensor panel having a substrate and a photoelectric conversion element array arranged on the substrate; a scintillator layer arranged on one surface side of the sensor panel; and a light generator arranged on the sensor panel at the other side in opposition to the one side on which the scintillator layer is arranged, in corresponding to an area in which the photoelectric conversion element array is arranged. The light generator includes a light transmitting electrode layer, a rear electrode layer and a light emitting layer arranged between the light transmitting electrode layer and the rear electrode. The light emitting layer according to a first aspect is formed from light emitting substance, a binder and a black pigment.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 18, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: SATORU SAWADA, Satoshi Okada, Masato Inoue, Kazumi Nagano, Shinichi Takeda, Keiichi Nomura, Yoshihiro Ogawa
  • Patent number: 7456410
    Abstract: An underlayer of a phosphor layer is disposed on a sensor panel including two-dimensionally arranged photoelectric conversion devices. The surface of the underlayer is subjected to atmospheric pressure plasma treatment. The phosphor layer is formed on the surface-treated underlayer. Then, the phosphor layer is covered with a moisture-resistant protective layer, a reflection layer, and another protective layer. Thus, the phosphor layer is prevented from peeling due to adhesion failure, and is constituted of uniformly shaped crystals by vapor deposition. A resulting radiation detecting apparatus exhibits high sensitivity and high definition, producing a uniform photoelectric conversion efficiency.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: November 25, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazumi Nagano
  • Publication number: 20080152788
    Abstract: An underlayer of a phosphor layer is disposed on a sensor panel including two-dimensionally arranged photoelectric conversion devices. The surface of the underlayer is subjected to atmospheric pressure plasma treatment. The phosphor layer is formed on the surface-treated underlayer. Then, the phosphor layer is covered with a moisture-resistant protective layer, a reflection layer, and another protective layer. Thus, the phosphor layer is prevented from peeling due to adhesion failure, and is constituted of uniformly shaped crystals by vapor deposition. A resulting radiation detecting apparatus exhibits high sensitivity and high definition, producing a uniform photoelectric conversion efficiency.
    Type: Application
    Filed: January 22, 2008
    Publication date: June 26, 2008
    Applicant: Canon Kabushiki Kaisha
    Inventor: Kazumi Nagano
  • Patent number: 7391029
    Abstract: A radiation detection apparatus including a sensor panel, having a photoreceiving unit constituted of plural photoelectric converting elements two-dimensionally arranged on a substrate and electrical connecting portions provided in an external portion of the photoreceiving unit and electrically connected to the photoelectric converting elements of respective rows or columns of the photoreceiving unit, a phosphor layer provided at least on the photoreceiving unit for converting a radiation into a light detectable by the photoelectric converting element, and a phosphor protective member covering the phosphor layer and in contact with the sensor panel, characterized in that the phosphor protective member includes a frame member provided between the phosphor layer and the electric connecting portion on the sensor panel, and a phosphor protective layer covering an upper surface of the phosphor layer and provided in close contact with an upper surface of the frame member.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: June 24, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Takeda, Yoshihiro Ogawa, Masato Inoue, Satoshi Okada, Tomoyuki Tamura, Kazumi Nagano
  • Publication number: 20080083877
    Abstract: A radiation detection apparatus of the present invention includes an optical detector disposed on a substrate and having a plurality of photoelectric conversion elements which convert light into an electrical signal, and a scintillator layer disposed on the optical detector and having a columnar crystal structure which converts radiation into light, wherein the concentration of an activator of the scintillator layer is higher at the radiation incident side opposite the optical detector and is lower at the optical detector side. The scintillator panel of the present invention includes the substrate and the scintillator layer disposed on the substrate, wherein the concentration of the activator of the scintillator layer is higher at the radiation incident side and is lower at the light emission side.
    Type: Application
    Filed: March 1, 2007
    Publication date: April 10, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Keiichi Nomura, Kazumi Nagano, Yoshihiro Ogawa, Satoshi Okada
  • Patent number: 7355184
    Abstract: An underlayer of a phosphor layer is disposed on a sensor panel including two-dimensionally arranged photoelectric conversion devices. The surface of the underlayer is subjected to atmospheric pressure plasma treatment. The phosphor layer is formed on the surface-treated underlayer. Then, the phosphor layer is covered with a moisture-resistant protective layer, a reflection layer, and another protective layer. Thus, the phosphor layer is prevented from peeling due to adhesion failure, and is constituted of uniformly shaped crystals by vapor deposition. A resulting radiation detecting apparatus exhibits high sensitivity and high definition, producing a uniform photoelectric conversion efficiency.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 8, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazumi Nagano
  • Publication number: 20070257198
    Abstract: A radiation detecting apparatus includes a substrate 1, a scintillator layer 7 converting a radiation into light, and scintillator protection members 8, 9 and 10 to cover the scintillator layer 7, wherein the scintillator protection member includes a scintillator protection layer 8 consisting of a hot-melt resin, and the scintillator protection layer 8 touches the scintillator layer 7. As the substrate 1, a sensor panel including a photoreceiving layer 15 on which photoelectric conversion elements 2, receiving light, are arranged in two-dimension, and a protection layer 5 provided on the photreceiving layer 15 and touching the scintillator layer 7 and the scintillator protection layer 8. By using such a scintillator protection layer, a film formation time of the scintillator protection layer can be shortened, and the film thickness dispersion of the scintillator protection layer can be suppressed.
    Type: Application
    Filed: July 27, 2005
    Publication date: November 8, 2007
    Inventors: Yoshihiro Ogawa, Satoshi Okada, Tomoyuki Tamura, Shinichi Takeda, Kazumi Nagano, Masato Inoue, Katsuro Takenaka
  • Patent number: 7256404
    Abstract: A radiation detecting apparatus having: a substrate; a phosphor layer which is formed on a principal plane of the substrate and converts a wavelength of a radiation; and a phosphor protective member including a phosphor protective layer which covers the phosphor layer and is adhered to the substrate, wherein the phosphor protective layer is made of a hot melt resin and an upper surface and a side surface of the phosphor layer and at least a part of at least one side surface of the substrate are covered with the phosphor protective layer. Thus, a moisture-proofing effect for penetration of the moisture from an interface between the phosphor layer and the substrate on the side surface side of the substrate can be improved. Further, by using the hot melt resin for the phosphor protective layer, simplification of manufacturing steps, remarkable reduction in the number of working steps, and remarkable reduction in costs of a product can be accomplished.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: August 14, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Inoue, Yoshihiro Ogawa, Satoshi Okada, Tomoyuki Tamura, Shinichi Takeda, Kazumi Nagano
  • Publication number: 20070131867
    Abstract: At a radiation incident side of light generating means comprising light guiding means 300 including a light source such as an LED 301, a light guiding plate 303, a reflecting plate 304, a diffusing plate 305, and the like, radiation shielding members 401 to 403 for shielding the radiation are provided. As the radiation shielding members, those absorbing or reflecting 70% of the incident radiation are used. Further, the radiation shielding member is disposed between a radiation detecting panel 500 and a light generating source such as the LED 301 and the like or disposed between the radiation detecting panel and a drive circuit which drives the light source such as the LED 301, and the like.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 14, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Okada, Yoshihiro Ogawa, Masato Inoue, Shinichi Takeda, Kazumi Nagano, Keiichi Nomura, Satoru Sawada
  • Patent number: 7193218
    Abstract: To eliminate defects in sealing the end of a scintillator and in sealing the end of a terminal of a flexible circuit board, to reduce the sealing processing time, to increase a pixel region, to eliminate image defects, and to enhance the service life, a radiation detection device comprises: a sensor panel comprising a photoelectric conversion portion and an electrode lead-out portion arranged in the outer periphery of the sensor panel; a flexible circuit board electrically connected to the electrode lead-out portion via a connection portion; a scintillator panel arranged on the photoelectric conversion portion and containing a scintillator layer; and a sealing resin comprising first and second sealing resins, the first sealing resin covering an end of the scintillator layer, and the second sealing resin covering the connection portion for the terminal of the flexible circuit board.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: March 20, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazumi Nagano
  • Patent number: 7105830
    Abstract: In a radiation detecting device having a sensor panel in which a plurality of photoelectric conversion elements are formed on one surface of a support substrate, a moisture-proof protective layer is laminated on a surface of the sensor panel on which the photoelectric conversion elements are formed, and a warp correction layer is laminated on the other surface of the sensor panel, and the moisture-proof protective layer and the warp correction layer are formed of a resin film having a drawing or extrusion direction, respectively, and bonded together so as to make the drawing or extrusion directions of both the resin films similar to each other. With the formation of the radiation detecting device, the warp of the radiation detection panel induced by a thermal displacement is prevented.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: September 12, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazumi Nagano, Tomoyuki Tamura, Satoshi Okada, Katsuro Takenaka
  • Publication number: 20060033031
    Abstract: A radiation detection apparatus including a sensor panel, having a photoreceiving unit constituted of plural photoelectric converting elements two-dimensionally arranged on a substrate and electrical connecting portions provided in an external portion of the photoreceiving unit and electrically connected to the photoelectric converting elements of respective rows or columns of the photoreceiving unit, a phosphor layer provided at least on the photoreceiving unit for converting a radiation into a light detectable by the photoelectric converting element, and a phosphor protective member covering the phosphor layer and in contact with the sensor panel, characterized in that the phosphor protective member includes a frame member provided between the phosphor layer and the electric connecting portion on the sensor panel, and a phosphor protective layer covering an upper surface of the phosphor layer and provided in close contact with an upper surface of the frame member.
    Type: Application
    Filed: August 8, 2005
    Publication date: February 16, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Takeda, Yoshihiro Ogawa, Masato Inoue, Satoshi Okada, Tomoyuki Tamura, Kazumi Nagano
  • Publication number: 20060033040
    Abstract: A radiation detecting apparatus includes a sensor panel 100, a phosphor layer 111 formed on the sensor panel 100 to convert a radiation into light, and a phosphor protecting member 110 covering the phosphor layer 111 to adhere closely to the phosphor protecting member 110. The phosphor protecting member 110 includes a phosphor protecting layer 116 made of vapor deposition polymerization polyimide formed by vapor deposition polymerization, a reflecting layer 113 reflecting the light converted by the phosphor layer 111, and a protecting layer 117 made of vapor deposition polymerization polyurea formed by the vapor deposition polymerization. By such a configuration, a polymerization reaction of the phosphor protecting layer 116 is performed on the substrate. Thereby, the generation of by-products is suppressed to make it easy to acquire the uniformity of film quality.
    Type: Application
    Filed: August 9, 2005
    Publication date: February 16, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Okada, Yoshihiro Ogawa, Masato Inoue, Kazumi Nagano, Shinichi Takeda, Tomoyuki Tamura
  • Publication number: 20060033032
    Abstract: A radiation detecting apparatus having: a substrate; a phosphor layer which is formed on a principal plane of the substrate and converts a wavelength of a radiation; and a phosphor protective member including a phosphor protective layer which covers the phosphor layer and is adhered to the substrate, wherein the phosphor protective layer is made of a hot melt resin and an upper surface and a side surface of the phosphor layer and at least a part of at least one side surface of the substrate are covered with the phosphor protective layer. Thus, a moisture-proofing effect for penetration of the moisture from an interface between the phosphor layer and the substrate on the side surface side of the substrate can be improved. Further, by using the hot melt resin for the phosphor protective layer, simplification of manufacturing steps, remarkable reduction in the number of working steps, and remarkable reduction in costs of a product can be accomplished.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 16, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Inoue, Yoshihiro Ogawa, Satoshi Okada, Tomoyuki Tamura, Shinichi Takeda, Kazumi Nagano
  • Publication number: 20050092927
    Abstract: To eliminate defects in sealing the end of a scintillator and in sealing the end of a terminal of a flexible circuit board, to reduce the sealing processing time, to increase a pixel region, to eliminate image defects, and to enhance the service life, a radiation detection device comprises: a sensor panel comprising a photoelectric conversion portion and an electrode lead-out portion arranged in the outer periphery of the sensor panel; a flexible circuit board electrically connected to the electrode lead-out portion via a connection portion; a scintillator panel arranged on the photoelectric conversion portion and containing a scintillator layer; and a sealing resin comprising first and second sealing resins, the first sealing resin covering an end of the scintillator layer, and the second sealing resin covering the connection portion for the terminal of the flexible circuit board.
    Type: Application
    Filed: October 25, 2004
    Publication date: May 5, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kazumi Nagano