Abstract: Experiments were designed to verify the kinetic model of dye cloud formation in color silver halide system. A coating structure in the form of "sandwich",in which an intermediate emulsion layer with AgX grains and coupler droplets was coated between an upper and a bottom gelatin layer with only dispersed coupler, was adopted to ensure the formed dye clouds were separated from each other after exposure and color development. The applicability of the model was confirmed by comparison between sizes of dye clouds measured and calculated. Then, taking advantage of the model, the optimizations for size and morphology of the dye clouds formed under many different factors were explored.

Key words: dye cloud, silver halide, color imaging system