Silver halide emulsions comprising hexagonal monodisperse tabular silver halide grains
AssigneeFuji Photo Film Co., Ltd.
InventorsMitsuo Saitou, Shigeharu Urabe, Katsuhisa Ozeki
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Abstract
A silver halide emulsion is described comprising a dispersion medium and silver halide grains, wherein the projected area of hexagonal tabular silver halide grains having as the outer surfaces two parallel hexagonal planes having a ratio of the longest edge length to the shortest edge length (referred to as the adjacent edge ratio) of 2/1 or less accounts for at least 70% of the projected area of the whole silver halide grains, and further the hexagonal tabular silver halide grains are monodisperse grains. The process of production of the silver halide emulsions is also described.
Claims8
A silver halide emulsion comprising a dispersion medium and silver halide grains, wherein the projected area of hexagonal tabular silver halide grains having as the basal planes having an adjacent edge ratio of 2/1 to 1/1 accounts for from 70% to 100% of the projected area of the whole silver halide grains, and further said hexagonal tabular silver halide grains are monodisperse grains wherein the average aspect ratio of the hexagonal tabular silver halide grains is from 2.5/1 to 20/1.
Dependencies are inferred from the claim text.