Patents by Inventor Koichi Nakatani

Koichi Nakatani 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).

  • Presensitized lithographic printing plate and method for preparing lithographic printing plate
    Patent number: 5858604
    Abstract: Object: A method for preparing a lithographic printing plate directly from digital image signals with the use of a presensitized lithographic printing plate comprising a support having thereon a photosensitive layer and a light-shielding layer which can be removed imagewise with laser light is provided, wherein the light-shielding layer, which can be industrially produced readily at a moderate price can be removed sufficiently during a process of development without the need of removing a masking layer at an unexposed portion and adverse effect on a photosensitive layer.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 12, 1999
    Assignee: Konica Corporation
    Inventors: Katsuyuki Takeda, Sota Kawakami, Katsumi Maejima, Koichi Nakatani, Shinji Matsumoto
  • Heat transfer recording process using an intermediate recording sheet
    Patent number: 5512931
    Abstract: A process for image forming by heat transfer method is disclosed. The process comprises the steps of (1) transferring an ink image from an ink layer of an ink sheet, which comprises a support and an ink layer provided on the support, to a surface of an intermediate image receiving layer of an intermediate image receiving sheet, which comprises a support and an image receiving layer provided on the support, by imagewise heating the ink layer, and (2) re-transferring the ink image transferred on the intermediate image receiving layer to a secondary image receiving sheet,In the above process, the ink layer comprises a coloring material and a homopolymer or a copolymer comprising a repeating unit derived from a monomer represented by the following Formula 1 or a phthalic polyester formed by polymerization of phthalic acid and a polyol; ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: April 30, 1996
    Assignee: Konica Corporation
    Inventors: Atsushi Nakajima, Shinji Matsumoto, Katsumi Maejima, Koichi Nakatani, Sota Kawakami, Ai Katsuda
  • Heat mode thermal transfer recording material
    Patent number: 5501937
    Abstract: Disclosed is a heat mode thermal transfer recording material comprising a support having thereon at least a light-heat converting layer containing a water-soluble colorant and an ink layer. The heat mode thermal transfer recording material is capable of forming transferred images excellent in color reproduction.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: March 26, 1996
    Assignee: Konica Corporation
    Inventors: Shinji Matsumoto, Atsushi Nakajima, Katsumi Maejima, Sota Kawakami, Koichi Nakatani
  • Method of forming images
    Patent number: 5346801
    Abstract: An image forming process of an image forming material comprising a support and provided thereon, a photosensitive layer and a covering layer in that order comprises imagewise exposing the material by laser beam scanning, and peeling the covering film from the exposed material to form an image on the support or on the covering film, wherein said photosensitive layer contains a colorant, an addition-polymerizable or cross-linkable compound and a salt of a cationic dye with a borate anion represented by the following Formula (1):Formula (1) ##STR1##
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: September 13, 1994
    Assignee: Konica Corporation
    Inventors: Hiroshi Watanabe, Tatsuichi Maehashi, Koichi Nakatani, Katsunori Kato, Tawara Komamura