Patents by Inventor Nansei Tasiro

Nansei Tasiro 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).

  • Heat sensitive composition, original plate using the same for lithographic printing plate, and process for preparing printing plate
    Patent number: 6503685
    Abstract: A heat-sensitive composition is disclosed which includes a substance which absorbs light and generates heat, an anionic self water-dispersible resin particle having an acid value of 10 to 300 and an average particle diameter of 0.005 to 15 &mgr;m, and a fluorine base surfactant. An original plate for a lithographic printing plate is disclosed which includes an ordinary negative- or positive-type PS plate having coated thereon the heat-sensitive composition. The original plate is image-wise exposed with high energy density light based on digital image information from a computer, subjected to first development with an aqueous alkali solution, flood exposure with active light, a second development with a developer for a negative or a positive, and post-treatment to obtain a printing plate.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: January 7, 2003
    Assignee: Dianippon Ink and Chemicals, Inc.
    Inventors: Shinji Shimizu, Yasuyuki Watanabe, Yasuhiko Kojima, Koji Oe, Nansei Tasiro
  • Heat sensitive composition, original plate using the same for lithographic printing plate, and process for preparing printing plate
    Patent number: 6218073
    Abstract: A heat-sensitive composition is disclosed which includes a substance which absorbs light and generates heat, an anionic self water-dispersible resin particle having an acid value of 10 to 300 and an average particle diameter of 0.005 to 15 &mgr;m, and a fluorine base surfactant. An original plate for a lithographic printing plate is disclosed which includes an ordinary negative- or positive-type PS plate having coated thereon the heat-sensitive composition. The original plate is image-wise exposed with high energy density light based on digital image information from a computer, subjected to first development with an aqueous alkali solution, flood exposure with active light, a second development with a developer for a negative or a positive, and post-treatment to obtain a printing plate.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: April 17, 2001
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Shinji Shimizu, Yasuyuki Watanabe, Yasuhiko Kojima, Koji Oe, Nansei Tasiro