Patents by Inventor Junichi Tamano

Junichi Tamano 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: 5262287
    Abstract: A silver halide color reversal photographic material comprising a support having thereon at least one cyan coupler-containing red-sensitive silver halide emulsion layer, at least one magenta coupler-containing green-sensitive silver halide emulsion layer, and at least one yellow coupler-containing blue-sensitive silver halide emulsion layer, wherein the total light-sensitive silver halide grains in the photographic material have an average silver iodide content of 5.5 mol % or less, and said at least one of light-sensitive silver halide emulsion layers and a substantially light-insensitive hydrophilic colloidal layer adjacent thereto comprises means for producing an interimage effect, said interimage effect satisfying at least one of relationships (a) and (b):(a)0.20.ltoreq..DELTA.logE(R.sub.0.5).ltoreq.0.40,0.ltoreq..DELTA.logE(R.sub.1.5).ltoreq.0.07,and0.18.ltoreq..DELTA.logE(R.sub.0.5)-.DELTA.logE(R.sub.1.5).ltoreq.0.35(b)0.25.ltoreq..DELTA.logE(G.sub.0.5).ltoreq.0.45,0.ltoreq..DELTA.logE(G.sub.1.5).
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: November 16, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoyasu Deguchi, Junichi Tamano
  • Patent number: 5079132
    Abstract: A method for forming a color positive image which comprises steps of:(a) exposing a color positive type silver halide material including a support having thereon at least two silver halide emulsion layers which have different spectral sensitivity distribution from each other, to light passed through a filter having at least one absorption band where light is absorbed in a sharp width; at least one absorption peak thereof being in a wavelength of from 480 to 520 nm or from 580 to 620 nm, the optical density of the absorption peak being at least 0.8; the 3/4 value width of the absorption peak, designated as W 3/4, being at least 5 nm and the 3/4 value width of the absorption peak and the 1/4 value width of the absorption peak, designated as W 1/4, satisfying the following relation:W3/4= W1/4.ltoreq.30 nm.and(b) developing the exposed material.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: January 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Nobuyuki Kimura, Junichi Tamano, Mitsugi Kawakami