Patents by Inventor Kazumichi Shibuya

Kazumichi Shibuya 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: 6709542
    Abstract: A thermal transfer recording medium including a substrate, and a thermal transfer recording layer formed on the substrate and mainly containing a coloring pigment, an amorphous organic high polymer and colorless or light-colored fine particles, the thickness of the thermal transfer recording layer being in the range of 0.2·m to 1.0·m, wherein the mixing ratios of the coloring pigment, the amorphous organic high polymer and the fine particles are confined to 20-60 parts by weight, 40-70 parts by weight and 1-30 parts by weight, respectively. An image-forming method using the thermal transfer recording medium, and an image-bearing body formed from the thermal transfer recording medium are also disclosed.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: March 23, 2004
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Akira Naito, Yoshiaki Shiina, Kazumichi Shibuya
  • Publication number: 20030059585
    Abstract: A thermal transfer recording medium comprising a substrate, and multi-color thermal transfer recording layers, each of the multi-color thermal transfer recording layers being repeatedly formed for each color along the longitudinal direction of the substrate, wherein each of the multi-color thermal transfer recording layers contains a coloring pigment, an amorphous organic polymer and fine particles. One of the multi-color thermal transfer recording layers is formed to have a larger thickness than the other of the multi-color thermal transfer recording layers. Each of the multi-color thermal transfer recording layers which are successively transferred, excluding the color thermal transfer recording layer to be transferred latest, is formed to have an average thickness of 0.6 &mgr;m or less.
    Type: Application
    Filed: May 31, 2002
    Publication date: March 27, 2003
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Akira Naito, Yoshiaki Shiina, Kazumichi Shibuya, Masakazu Amahara
  • Patent number: 6468379
    Abstract: A thermal transfer recording medium comprising a substrate, and multi-color thermal transfer recording layers, each of the multi-color thermal transfer recording layers being repeatedly formed for each color along the longitudinal direction of the substrate, wherein each of the multi-color thermal transfer recording layers contains a coloring pigment, an amorphous organic polymer and fine particles. One of the multi-color thermal transfer recording layers is formed to have a larger thickness than the other of the multi-color thermal transfer recording layers. Each of the multi-color thermal transfer recording layers which are successively transferred, excluding the color thermal transfer recording layer to be transferred latest, is formed to have an average thickness of 0.6 &mgr;m or less.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: October 22, 2002
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Akira Naito, Yoshiaki Shiina, Kazumichi Shibuya, Masakazu Amahara