Silver halide photographic material
AssigneeFuji Photo Film Co., Ltd.
InventorNaoto Ohshima
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Abstract
There is disclosed a silver halide photographic material comprising a photosensitive emulsion layer containing a nitrogen-containing heterocyclic compound and a silver halide emulsion of high-silver-chloride, which emulsion has been spectrally sensitized with a red-sensitive sensitizing dye having a definite reduction potential value, and which has been subjected to reduction sensitization. The disclosure as described provides a silver halide photographic material that is excellent in rapid processing and high in sensitivity and wherein there is little change of photographic performance.
Claims16
A silver halide photographic material comprising on its base at least one photosensitive emulsion layer comprising a nitrogen-containing heterocyclic compound and a silver halide emulsion having a silver chloride content of at least 90 mol %, the emulsion having been spectrally sensitized with a red-sensitive sensitizing dye having a reduction potential value of -1.27 V (vs SCE) or a value lower than -1.27 V (vs SCE), and which has been subjected to reduction sensitization wherein the emulsion is produced by the steps of grain formation, desalting, chemical-sensitization, and reduction sensitization which is carried out at the time of grain nuclei formation, at the time of physical ripening of the grains, at the time of growth of the grains, or prior to or after chemical sensitization.
Dependencies are inferred from the claim text.