Patents by Inventor Keiichi Hoshino

Keiichi Hoshino 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: 5541040
    Abstract: Disclosed is a positive type color light sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer;wherein, when an exposure quantity-gives minimum density of +0.2 on a first layer selected from said three layer after developing in the main spectra sensitivity region of the first layer, a second layer selected from said three layers is given lower density with said exposure than a density without said exposure.The positive type color light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed printer.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: July 30, 1996
    Assignee: Konica Corporation
    Inventors: Susumu Okawauchi, Yasuo Tosaka, Yoshiyuki Nonaka, Keiichi Hoshino
  • Patent number: 5480767
    Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a reflective support comprising polyolefin resin coated paper and provided on one side thereof with photographic component layers comprising a hydrophilic colloidal layer containing a white pigment, a non-sensitive hydrophilic colloidal layer, and a silver halide emulsion layer, wherein at least one of said photographic component layers contains an oil-soluble dye or a colored pigment, either of which is not substantially incapable of being decolorized on a photographic-processing.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 2, 1996
    Assignee: Konica Corporation
    Inventors: Yasuo Tosaka, Yoshiyuki Nonaka, Keiichi Hoshino
  • Patent number: 5436116
    Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer; wherein, when an exposure is conducted within 1/10 to 10 times of an exposure amount giving minimum density of +0.2 on the first layer selected from said three layers after developing in the main spectra sensitivity region of the first layer, the second layer selected from said three layers is given lower density with said 1/10 to 10 times of exposure than a density without said 1/10 to 10 times of exposure; and reflection densities in 450 nm, 550 nm and 700 nm is not less than 0.8 respectively, before the developing.The silver halide color photographic light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed printer.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: July 25, 1995
    Assignee: Konica Corporation
    Inventors: Keiichi Hoshino, Susumu Ohkawachi, Yasuo Tosaka, Yoshiyuki Nonaka
  • Patent number: 5436117
    Abstract: Disclosed is a positive type silver halide color photographic light-sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer; wherein, when an exposure is conducted with 1/10 to 10 times an exposure amount giving minimum density of +0.2 on a first layer selected from said three layer after developing in the main spectra sensitivity region of the first layer, a second layer selected from said three layers is given lower density with said exposure than a density without said exposure; and after a photographic process comprising a color developing step, the mainly yellow, mainly magenta and mainly cyan image forming layers have the monochromatic yellow, magenta and cyan tones in toe portions thereof each of not less than 1.7. The silver halide color photographic light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed matter.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: July 25, 1995
    Assignee: Konica Corporation
    Inventors: Keiichi Hoshino, Susumu Ohkawauchi, Yasuo Tosaka, Yoshiyuki Nonaka