Patents by Inventor Shinsuke Bando

Shinsuke Bando 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: 5538839
    Abstract: A silver halide photographic material comprising a support having coated thereon at least one blue-sensitive layer containing a yellow coupler, at least one green-sensitive layer containing a magenta coupler and at least one red-sensitive layer containing a cyan coupler, wherein on each of the characteristic curves of yellow, magenta and cyan of the silver halide photographic material, 1) the maximum density is not less than 3.0 and the density obtained by subtracting the density of the support from the minimum density is not more than 0.1, 2) the average value of point gamma at various points in the exposure region corresponding to a density value of from not less than 0.5 to less than 1.5 is from not less than 0.85 to not more than 1.15 and the fluctuation width thereof is within .+-.15% of the average value of point gamma in the exposure region, and 3) the average value of point gamma at various points in the exposure region corresponding to a density value of from not less than 1.5 to that 0.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: July 23, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ryuji Abe, Shinsuke Bando
  • Patent number: 5514527
    Abstract: A silver halide photographic material comprising a support having coated thereon at least one blue-sensitive layer containing a yellow coupler, at least one green-sensitive layer containing a magenta coupler and at least one red-sensitive layer containing a cyan coupler, wherein on each of the characteristic curves of yellow, magenta and cyan of the silver halide photographic material, 1) the maximum density is not less than 3.0 and the density obtained by subtracting the density of the support from the minimum density is not more than 0.1, 2) the average value of point gamma at various points in the exposure region corresponding to a density value of from not less than 0.5 to less than 1.5 is from not less than 0.85 to not more than 1.15 and the fluctuation width thereof is within .+-.15% of the average value of point gamma in the exposure region, and 3) the average value of point gamma at various points in the exposure region corresponding to a density value of from not less than 1.5 to that 0.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: May 7, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ryuji Abe, Shinsuke Bando
  • Patent number: 5273866
    Abstract: A silver halide color photographic material comprising: a support; at least a blue-sensitive emulsion layer, a green-sensitive emulsion layer, and a red-sensitive emulsion layer on the support, and one or more hydrophilic colloidal layers thereon containing a dispersion of microcrystals of at least one compound represented by general formulae (I), (II), (III), (IV), (V), and (VI); and at least one light-sensitive silver halide emulsion layer having a silver density (d) of 0.4 g/cm.sup.3 or more, wherein d is N/V; where N represents the total number of grams of silver in said one or more light-sensitive silver halide emulsion layers and V represents the cm.sup.3 of said light-sensitive silver halide emulsion layer.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: December 28, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Katsuro Nagaoka, Shinsuke Bando
  • Patent number: 5206133
    Abstract: A novel silver halide color reversal photographic material is provided having at least one light-sensitive silver halide emulsion layer on a support, comprising silver halide grains contained in said at least one silver emulsion layer, said silver halide grains consisting of a core phase comprising the center thereof and a shell phase covering said core phase and comprising the surface thereof, and silver iodide content of said shell phase being higher than that of said core phase.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: April 27, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinsuke Bando
  • Patent number: 5156946
    Abstract: A silver halide photographic material comprising at least one silver halide emulsion layer on a support, wherein the latent image distribution of silver halide grains contained in the at least one emulsion layer has at least one peak value within the grains, the location of the peak value is at a depth of less than 0.01 .mu.m from the surface of the grains, and the average silver iodide content of the grains is about 15 mol % or less.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: October 20, 1992
    Assignee: Fuji Photo Film Co., Ltd
    Inventors: Katsuro Nagaoka, Shinsuke Bando, Takefumi Hara
  • Patent number: 4727016
    Abstract: A photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer is disclosed, which contains in said silver halide emulsion layer two silver halide emulsions which are different from each other in mean grain size and which satisfy the conditions that:one of the silver halide emulsions, having a relatively larger mean grain size, has a mean grain size (X.sub.1) of 1.3 .mu.m or more;the mean grain size (X.sub.2) of the other silver halide emulsion, having a relatively smaller mean grain size, and X.sub.1 has a relation satisfying Formula (1)Formula (1): 0.5.ltoreq.X.sub.2 /X.sub.1 .ltoreq.0.9;the ratio of the standard deviation (S.sub.1) of the grain sizes of the silver halide emulsion having a relatively larger mean grain size to X.sub.1 satisfies the Formula (2)Formula (2): S.sub.1 /X.sub.1 .ltoreq.0.25;the ratio of the standard deviation (S.sub.2) of the grain sizes of the silver halide emulsion having a relatively smaller mean grain size to X.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: February 23, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinsuke Bando