Patents by Inventor Kohei AIZU

Kohei AIZU 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: 20190344556
    Abstract: A method for producing a lithographic printing plate includes, in this order, a step of preparing a lithographic printing plate precursor having an image-recording layer on a hydrophilic support, a step of exposing the lithographic printing plate precursor in an image shape, and a step of removing a non-exposed portion of the image-recording layer exposed in the lithographic printing plate precursor using a developer, the developer includes a compound having at least one acidic group selected from the group consisting of a phosphate group, a phosphonate group, and a phosphinate group and one or more carboxy groups, a pH of the developer is 5 to 10, and, after the removal step, a step of washing a surface of an obtained lithographic printing plate with water and a step of desensitizing the surface of the obtained lithographic printing plate are not provided.
    Type: Application
    Filed: July 22, 2019
    Publication date: November 14, 2019
    Inventors: Koji WARIISHI, Kohei AIZU
  • Publication number: 20190187557
    Abstract: Provided are a thermal fusion-type lithographic printing plate precursor in which the visibility is excellent, ablation during laser exposure is suppressed, and the contamination of dampening water and printing ink during on-machine development is suppressed by a lithographic printing plate precursor having a support and an image-recording layer, in which the image-recording layer is capable of forming an image by infrared laser exposure, a non-exposed portion of the image-recording layer is removable by at least one of dampening water and printing ink on a printer, and the image-recording layer contains (1) a color developing system in which a hue change generated by infrared laser exposure is ?a/?b?0.6 and (2) 70% by mass or more of a thermoplastic polymer particle with respect to a solid content of the image-recording layer and a plate-making method in which the thermal fusion-type lithographic printing plate precursor is used.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 20, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Tomoki Ochimizu, Kohei Aizu
  • Patent number: 10241400
    Abstract: A color developing composition which develops colors in a high density and does not significantly discolor when aged, a lithographic printing plate precursor which has excellent plate-inspecting properties by means of color development and is capable of maintaining strong color development even when aged after color development, a plate making method for a lithographic printing plate in which the lithographic printing plate precursor is used, and a new compound that can be preferably used as a color developer. The color developing composition of the present invention includes a compound represented by Formula 1. The compound in the present invention is represented by Formula 1. In Formula 1, R1 represents a group in which an R1—O bond is cleaved by heat or exposure to infrared rays.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: March 26, 2019
    Assignee: FUJIFILM CORPORATION
    Inventors: Akio Mizuno, Keisuke Nogoshi, Kyosuke Tsumura, Taira Murakami, Kohei Aizu
  • Publication number: 20180361774
    Abstract: Provided are a planographic printing plate precursor including: a support; and an image recording layer provided on the support, in which the image recording layer contains an infrared absorbing agent, a polymerization initiator, a polymerizable compound containing a hydrogen bonding group, and a hard polymer particle containing at least one group selected from the group consisting of a urethane group, a urea group, an imide group, an amide group, and a sulfonamide group on the surface of the hard polymer particle, and a number average primary particle diameter of the hard polymer particle is in a range of 0.01 to 1 ?m; and a plate-making method for a planographic printing plate obtained by using the planographic printing plate precursor.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Inventors: Kohei AIZU, Ryo NAKAMURA, Hiroaki IDEI, Tomoki OCHIMIZU
  • Patent number: 9776866
    Abstract: The method for producing a perovskite metal oxynitride of the present invention, comprises: a hydrogenation step (A) of forming a perovskite oxyhydride in which an oxide ion (O2?) and a hydride ion (H?) coexist, by reducing a perovskite oxide through a reductive oxygen elimination reaction using a metal hydride; and a nitriding step (B) of forming a perovskite oxynitride containing a nitride ion (N3?) by heat-treating the perovskite oxyhydride in the presence of a nitrogen source substance at a temperature of 300° C. or higher and 600° C. or lower and exchanging the hydride ion (H?) for a nitride ion (N3?).
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: October 3, 2017
    Assignee: Japan Science and Technology Agency
    Inventors: Hiroshi Kageyama, Yoji Kobayashi, Kohei Aizu, Wataru Yoshimune, Hideo Hosono
  • Publication number: 20170123315
    Abstract: An object of the present invention is to provide a color developing composition which develops colors in a high density and does not significantly discolor when aged, a lithographic printing plate precursor which has excellent plate-inspecting properties by means of color development and is capable of maintaining strong color development even when aged after color development, a plate making method for a lithographic printing plate in which the lithographic printing plate precursor is used, and a new compound that can be preferably used as a color developer. The color developing composition of the present invention includes a compound represented by Formula 1. The compound in the present invention is represented by Formula 1. In Formula 1, R1 represents a group in which an R1—O bond is cleaved by heat or exposure to infrared rays.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Inventors: Akio MIZUNO, Keisuke NOGOSHI, Kyosuke TSUMURA, Taira MURAKAMI, Kohei AIZU
  • Publication number: 20170073229
    Abstract: The method for producing a perovskite metal oxynitride of the present invention, comprises: a hydrogenation step (A) of forming a perovskite oxyhydride in which an oxide ion (O2?) and a hydride ion (H?) coexist, by reducing a perovskite oxide through a reductive oxygen elimination reaction using a metal hydride; and a nitriding step (B) of forming a perovskite oxynitride containing a nitride ion (N3?) by heat-treating the perovskite oxyhydride in the presence of a nitrogen source substance at a temperature of 300° C. or higher and 600° C. or lower and exchanging the hydride ion (H?) for a nitride ion (N3?).
    Type: Application
    Filed: January 9, 2015
    Publication date: March 16, 2017
    Inventors: Hiroshi KAGEYAMA, Yoji KOBAYASHI, Kohei AIZU, Wataru YOSHIMUNE, Hideo HOSONO