Patents Assigned to Agfa-Gevaert Aktiengesellachaft
  • Patent number: 4186011
    Abstract: In a color photographic material in which at least one of the partial images yellow, magenta and cyan is produced in a double layer consisting of a first layer of lower sensitivity and a second layer of higher sensitivity and arranged further away from the layer support than said first layer, at least one color unit, preferably the blue-sensitive and/or the green sensitive color unit consists of at least three layers.(a) a first silver halide emulsion layer of low sensitivity containing a color coupler(b) a second silver halide emulsion layer which may contain a color coupler, and(c) a third layer which is free from silver halide, but contains a color coupler,the coupler in said layers a, b and c forming on color development dyes of substantially the same color which is complementary to that of the light to which the layers are sensitive.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: January 29, 1980
    Assignee: Agfa-Gevaert Aktiengesellachaft
    Inventors: Joachim W. Lohmann, Erwin Ranz, Martin Kupper