Silver halide photographic emulsion
AssigneeFuji Photo Film Co., Ltd.
InventorsSumito Yamada, Tetsuo Nakamura
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Abstract
A photographic silver halide emulsion comprising silver chlorobromide grains containing at least 80 mol % silver chloride or silver chloride grains is disclosed, wherein tabular grains having a thickness of less than 0.5 .mu.m, a diameter of at least 0.5 .mu.m and an aspect ratio of at least 2/1 account for at least 50% of the total projected area of the silver halide grains, and the tabular grains are formed in the presence of a compound of metal belonging to Group VIII of the Periodic Table. The high silver chloride content emulsion has a sensitivity as high as that of a silver iodobromide emulsion.
Claims9
A photographic silver halide emulsion comprising silver chorobromide grains containing at least 98.5 mol % silver chloride or silver chloride grains, wherein tabular grains having a thickness of less than 0.5 .mu.m, a diameter of at least 0.5 .mu.m and an aspect ratio of at least 2/1 account for at least 50% of the total projected area of the silver halide grains, and said tabular grains are formed in the presence of a compound of a metal belonging to Group VIII of the Periodic Table selected from the group consisting of iron, ruthenium and osmium.
A light-sensitive silver halide photographic material comprising a support having thereon at least one hydrophilic colloid layer, at least one layer of which is a light-sensitive silver halide emulsion layer comprising silver chlorobromide grains containing at least 98.5 mol % silver chloride or silver chloride grains, wherein tabular grains having a thickness of less than 0.5 .mu.m, a diameter of at least 0.5 .mu.m and an aspect ratio of at least 2/1 account for at least 50% of the total projected area of the silver halide grains, and said tabular grains are formed in the presence of a compound of a metal belonging to Group VIII of the Periodic Table selected from the group consisting of iron, ruthenium and osmium.
Dependencies are inferred from the claim text.