Patents by Inventor Takafumi Yanagita

Takafumi Yanagita 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: 10302773
    Abstract: A radiation detector includes: a scintillator panel having a scintillator layer; and a photoelectric conversion panel having a support substrate, a light receiving element, and a switching element, wherein the light receiving element faces the scintillator layer, the photoelectric conversion panel has flexibility, and the scintillator layer is formed by being sealed with a moisture-proof material.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 28, 2019
    Assignee: Konica Minolta, Inc.
    Inventors: Keiko Itaya, Takafumi Yanagita, Kazuhiro Maeda
  • Publication number: 20180275287
    Abstract: A radiation detector includes: a scintillator panel having a scintillator layer; and a photoelectric conversion panel having a support substrate, a light receiving element, and a switching element, wherein the light receiving element faces the scintillator layer, the photoelectric conversion panel has flexibility, and the scintillator layer is formed by being sealed with a moisture-proof material.
    Type: Application
    Filed: December 15, 2017
    Publication date: September 27, 2018
    Applicant: KONICA MINOLTA, INC.
    Inventors: Keiko ITAYA, Takafumi YANAGITA, Kazuhiro MAEDA
  • Patent number: 9383461
    Abstract: A scintillator panel includes a resin substrate, a phosphor layer which is formed on the resin substrate and converts radiation into visible light, a first moisture-proof protective body that is bonded to a surface of the resin substrate opposite to a surface of the resin substrate, on which the phosphor layer is formed, through an adhesive layer, and a second moisture-proof protective body that is formed so as to integrally cover from a surface of the phosphor layer to a part of a surface of the first moisture-proof protective body opposite to an adhesive surface of the first moisture-proof protective body.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: July 5, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yoshihiro Gorouya, Takafumi Yanagita
  • Publication number: 20160041278
    Abstract: A scintillator panel includes a resin substrate, a phosphor layer which is formed on the resin substrate and converts radiation into visible light, a first moisture-proof protective body that is bonded to a surface of the resin substrate opposite to a surface of the resin substrate, on which the phosphor layer is formed, through an adhesive layer, and a second moisture-proof protective body that is formed so as to integrally cover from a surface of the phosphor layer to a part of a surface of the first moisture-proof protective body opposite to an adhesive surface of the first moisture-proof protective body.
    Type: Application
    Filed: July 16, 2015
    Publication date: February 11, 2016
    Inventors: Yoshihiro GOROUYA, Takafumi YANAGITA
  • Patent number: 9230704
    Abstract: A hard coat film includes: a transparent base material; and a hard coat layer formed on the transparent base material, wherein the hard coat layer includes a cured product obtained by curing a composition including: an ultraviolet curable acrylate resin including one or more types of multifunctional acrylate; first microparticles having an average particle diameter of 5 nm or more and 100 nm or less; and a thermoplastic polyester resin.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: January 5, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yoshito Yamamoto, Takafumi Yanagita, Hideki Komatsu
  • Publication number: 20150048259
    Abstract: A hard coat film includes: a transparent base material; and a hard coat layer formed on the transparent base material, wherein the hard coat layer includes a cured product obtained by curing a composition including: an ultraviolet curable acrylate resin including one or more types of multifunctional acrylate; first microparticles having an average particle diameter of 5 nm or more and 100 nm or less; and a thermoplastic polyester resin.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 19, 2015
    Inventors: Yoshito YAMAMOTO, Takafumi YANAGITA, Hideki KOMATSU
  • Patent number: 8803098
    Abstract: A method of manufacturing a scintillator panel in which no dust is generated when improving protrusions on the phosphor surface, resulting in no generation of image defects caused by the dust, to-provide a scintillator panel exhibiting excellent image quality and a radiation image detector thereof. The scintillator panel includes a support having a phosphor layer formed thereon. The method includes forming the phosphor layer on the support, and subsequently heat-treating the support and the phosphor layer which are sandwiched by two rigid plates under applied pressure.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 12, 2014
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Tadashi Arimoto, Takafumi Yanagita
  • Patent number: 8440983
    Abstract: Disclosed are a radiation image conversion panel, which provides high luminance, an image without white or black defects, an image free from cracks and an image with reduced unevenness, and its manufacturing method. Also disclosed is an X-ray radiographic system employing the radiation image conversion panel. The radiation image conversion panel of the invention comprises a substrate and provided thereon, a reflection layer, a phosphor layer and a protective layer in that order, wherein the phosphor layer is composed of a phosphor crystal in the form of column, and the reflection layer is formed by vapor phase deposition of two or more kinds of metals.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: May 14, 2013
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takafumi Yanagita, Tadashi Arimoto
  • Patent number: 8389961
    Abstract: It is a feature that in the present invention, provided is a method of cleaning a radiation image conversion panel possessing a substrate and provided thereon, a phosphor layer, and further possessing a protective layer provided on the phosphor layer, wherein a surface of the protective layer is cleaned by moving a cleaning member, while applying a pressure of 1 mN/cm2-1 N/cm2 to the surface of the protective layer with the cleaning member. Also provided can be a method of cleaning a radiation image conversion panel to provide an image information reading method by which image information exhibiting reduced image defect and image unevenness without damaging the radiation image conversion panel can be read out.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: March 5, 2013
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takafumi Yanagita, Shinichi Okamura
  • Publication number: 20120068074
    Abstract: A method of manufacturing a scintillator panel in which no dust is generated when improving protrusions on the phosphor surface, resulting in no generation of image defects caused by the dust, to-provide a scintillator panel exhibiting excellent image quality and a radiation image detector thereof. The scintillator panel includes a support having a phosphor layer formed thereon. The method includes forming the phosphor layer on the support, and subsequently heat-treating the support and the phosphor layer which are sandwiched by two rigid plates under applied pressure.
    Type: Application
    Filed: March 10, 2010
    Publication date: March 22, 2012
    Applicant: Konica Minolta Medical & Graphic Inc.
    Inventors: Tadashi Arimoto, Takafumi Yanagita
  • Publication number: 20110121185
    Abstract: There is disclosed a radiation image detecting apparatus which has achieved enhanced moisture resistance of a scintillator and enhanced image quality such as sharpness of a radiation image. The radiation image detecting apparatus is provided with a scintillator panel comprising a phosphor layer on a substrate and a photoelectric conversion panel, in which the scintillator panel is held between the photoelectric conversion panel and an opposed base material, and the periphery of the photoelectric conversion panel adheres to the periphery of the opposed base material with an adhesive, and pressure of a gas in the space between the photoelectric conversion panel and the opposed base material being lower than an atmospheric pressure.
    Type: Application
    Filed: February 26, 2009
    Publication date: May 26, 2011
    Inventors: Yoko Hirai, Takehiko Shoji, Takafumi Yanagita
  • Patent number: 7834330
    Abstract: There is provided a radiation image conversion panel having strong resistance to physical impact, and in which enhanced sharpness and adhesion are balanced, especially, enhanced adhesion of a photostimulable phosphor layer onto a support is achieved, and a preparation method of the radiation image conversion panel. The radiation image conversion panel comprising on a support a sublayer and at least one photostimulable phosphor layer in this order from the support, featured in that the photostimulable phosphor layer is formed by a gas phase method and has a thickness of not less than 50 ?m, and the sublayer comprises a thermoplastic resin and the thickness of the central portion in an image area of the sublayer is greater than that of the peripheral portion of the image area.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: November 16, 2010
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takafumi Yanagita, Tadashi Arimoto
  • Patent number: 7718986
    Abstract: A radiation image conversion panel containing a substrate having thereon a phosphor layer, wherein the phosphor layer is formed with a vapor deposition method, and an adhesion force of the phosphor layer with the substrate is greater than a breaking strength of the phosphor layer.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: May 18, 2010
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takafumi Yanagita, Tadashi Arimoto
  • Publication number: 20100117005
    Abstract: It is a feature that in the present invention, provided is a method of cleaning a radiation image conversion panel possessing a substrate and provided thereon, a phosphor layer, and further possessing a protective layer provided on the phosphor layer, wherein a surface of the protective layer is cleaned by moving a cleaning member, while applying a pressure of 1 mN/cm2-1 N/cm2 to the surface of the protective layer with the cleaning member. Also provided can be a method of cleaning a radiation image conversion panel to provide an image information reading method by which image information exhibiting reduced image defect and image unevenness without damaging the radiation image conversion panel can be read out.
    Type: Application
    Filed: April 14, 2008
    Publication date: May 13, 2010
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Takafumi Yanagita, Shinichi Okamura
  • Publication number: 20100034351
    Abstract: Disclosed are a radiation image conversion panel, which provides high luminance, an image without white or black defects, an image free from cracks and an image with reduced unevenness, and its manufacturing method. Also disclosed is an X-ray radiographic system employing the radiation image conversion panel. The radiation image conversion panel of the invention comprises a substrate and provided thereon, a reflection layer, a phosphor layer and a protective layer in that order, wherein the phosphor layer is composed of a phosphor crystal in the form of column, and the reflection layer is formed by vapor phase deposition of two or more kinds of metals.
    Type: Application
    Filed: February 22, 2008
    Publication date: February 11, 2010
    Inventors: Takafumi Yanagita, Tadashi Arimoto
  • Patent number: 7659524
    Abstract: A method of preparing a radiation image conversion panel including a substrate and a phosphor layer, may include heating an evaporation source containing a phosphor raw material to evaporate the raw material and depositing an evaporated material on the substrate to form the phosphor layer, while the substrate being heated, wherein in (ii), a temperature of the substrate increases at a rate of 0 to 5° C./min, and falling within a range of from 60 to 110° C.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: February 9, 2010
    Assignee: Konica Minolta Medical & Graphics, Inc.
    Inventors: Shinichi Okamura, Takafumi Yanagita
  • Patent number: 7638785
    Abstract: A reading system for reading information recorded in a radiation image conversion panel containing a flexible substrate having thereon a phosphor layer containing a columnar crystal phosphor, wherein the reading system has a transport section to transport the radiation image conversion panel with curvature when the radiation image conversion panel is transported in the reading system, provided that the radiation image conversion panel has a curvature radius of from 50 to 500 mm during transportation by the transport section in the reading system.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: December 29, 2009
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Takafumi Yanagita, Tadashi Arimoto
  • Publication number: 20090250633
    Abstract: An objective is to provide a high quality radiation image conversion panel and a manufacturing method thereof in which strength and heat resistance of an undercoat resin layer, and no cracks are generated in a stimulable phosphor layer. Disclosed is a radiation image conversion panel comprising a support and provided thereon, a stimulable phosphor layer, wherein a crosslinked undercoat resin layer that is formed between the support and the stimulable phosphor layer has a chemical bonding intensity ratio of NCO group/methyl group of 0.2-2.0.
    Type: Application
    Filed: October 24, 2005
    Publication date: October 8, 2009
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Shinichi Okamura, Takafumi Yanagita
  • Patent number: 7564047
    Abstract: An objective is to provide a radiation image conversion panel exhibiting no generation of cracks in a phosphor layer, easy cutting, improved image and excellent productivity, and also to provide a manufacturing method and a cassette thereof. Disclosed is a radiation image conversion panel possessing a support and provided thereon, a phosphor layer possessing phosphor having a columnar crystal structure, wherein a region in which no phosphor layer is provided on a surface of the support is within 0.5 mm from an edge of the support.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: July 21, 2009
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Tadashi Arimoto, Takafumi Yanagita, Yoshihiro Gorouya
  • Publication number: 20090078887
    Abstract: There is provided a radiation image conversion panel having strong resistance to physical impact, and in which enhanced sharpness and adhesion are balanced, especially, enhanced adhesion of a photostimulable phosphor layer onto a support is achieved, and a preparation method of the radiation image conversion panel. The radiation image conversion panel comprising on a support a sublayer and at least one photostimulable phosphor layer in this order from the support, featured in that the photostimulable phosphor layer is formed by a gas phase method and has a thickness of not less than 50 ?m, and the sublayer comprises a thermoplastic resin and the thickness of the central portion in an image area of the sublayer is greater than that of the peripheral portion of the image area.
    Type: Application
    Filed: March 22, 2006
    Publication date: March 26, 2009
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Takafumi Yanagita, Tadashi Arimoto