Eastman-Kodak Company

George F Wu

Allan Francis Sowinski

Thomas B Brust

Gary L House

James T Kofron

A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.

Color photographic recording material

Color photographic recording material and process

The incorporation of dopant during the precipitation of silver halide grains. The silver halide grains are formed by a double jet, accelerated flow technique. After addition of about 65 to 90% of the silver halide mass to be precipitated, a dopant solution of an Group VIB salt in an amount of between about 0.2 and about 1.0 mg salt per mole of silver is added to the precipitation dispersion. The dispersion formation is then allowed to complete by continuing the double jet precipitation technique until a desired grain size is reached. Grains formed by this process will have their outer third comprising the Group VI metal salt with the silver halide. In the preferred method the Group VIB metal salt added is a selenium salt comprising potassium selenocyanate.

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Rochester, NY, United States of America

George F Wu