Patents by Inventor Yukihiro Yamakoshi

Yukihiro Yamakoshi 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).

  • Method of treating rinsing wastewater from developing apparatus for photosensitive lithographic printing plate, method of development, and developing apparatus
    Patent number: 8178283
    Abstract: An object of the present invention is to provide a simple method for treatment of a washing waste liquid, which enhances the flocculation effect and also enhances filtration characteristics of a flocculated washing waste liquid in a flocculation treatment of a washing waste liquid generated in processing a photosensitive lithographic printing plate. Disclosed is a method for treatment of a washing waste liquid generated in a processing apparatus of a photosensitive lithographic printing plate, which comprises (1) adding a cationic polymer flocculant to the washing waste liquid, then (2) adding an anionic polymer flocculent, followed by (3) filtration.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: May 15, 2012
    Assignee: Eastman Kodak Company
    Inventors: Jun Takeuchi, Hitoshi Tsuru, Yukihiro Yamakoshi
  • PROCESSING APPARATUS FOR PREPARING LITHOGRAPHIC PRINTING PLATES
    Publication number: 20120111266
    Abstract: A protective gum solution coating apparatus for coating a protective gum solution on a lithographic printing plate precursor comprises a pair of upstream side rollers in a gum section, a pair of downstream side rollers in the gum section, and a protective gum solution feeding device, wherein, in a plane orthogonal to the axes of the rollers. An upper roller of the pair of downstream side rollers inclines to a direction opposite to a direction where the lithographic printing plate precursor progresses so that an angle “a” between a line which links the centers of the lower roller and the upper roller of the pair of downstream side rollers and a line which links the center of the lower roller of the pair of downstream side rollers and the contact point CP becomes 0<a?5 degrees.
    Type: Application
    Filed: October 6, 2011
    Publication date: May 10, 2012
    Inventors: Seiji Noge, Yukihiro Yamakoshi, Tomohiko Mori
  • METHOD OF TREATING RINSING WASTEWATER FROM DEVELOPING APPARATUS FOR PHOTOSENSITIVE LITHOGRAPHIC PRINTING PLATE, METHOD OF DEVELOPMENT, AND DEVELOPING APPARATUS
    Publication number: 20100047718
    Abstract: An object of the present invention is to provide a simple method for treatment of a washing waste liquid, which enhances the flocculation effect and also enhances filtration characteristics of a flocculated washing waste liquid in a flocculation treatment of a washing waste liquid generated in processing a photosensitive lithographic printing plate. Disclosed is a method for treatment of a washing waste liquid generated in a processing apparatus of a photosensitive lithographic printing plate, which comprises (1) adding a cationic polymer flocculant to the washing waste liquid, then (2) adding an anionic polymer flocculent, followed by (3) filtration.
    Type: Application
    Filed: December 5, 2007
    Publication date: February 25, 2010
    Applicant: EASTMAN KODAK COMPANY
    Inventors: Jun Takeuchi, Hitoshi Tsuru, Yukihiro Yamakoshi
  • Silver halide photographic light-sensitive material and a process for forming a high contrast photographic image
    Patent number: 4927734
    Abstract: A silver halide photographic light-sensitive material contains at least one negative-working silver halide emulsion layer composed of substantially surface latent image type monodispersed silver halide grains. The emulsion layer or another hydrophilic colloidal layer contains a compound of general formula I or II: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group, and if one of R.sub.3 and R.sub.4 is a hydrogen atom, the other thereof is not a hydrogen atom. Disclosed also is a process which forms a photographic image by employing the material as described above, or a developer containing the compound as shown above.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: May 22, 1990
    Assignee: Dainippon Ink. and Chemicals, Inc.
    Inventors: Shuji Rokutanda, Yasuo Higemitsu, Akiyoshi Tsuchida, Yukihiro Yamakoshi