Photographic image-forming method
AssigneeFuji Photo Film Co., Ltd.
InventorsYoshitaka Akimura, Shigeo Hirano, Hiroyuki Mifune, Eiichi Okutsu
Life of this patent
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Abstract
A photographic image-forming method comprising imagewise exposing a silver halide photographic light-sensitive element containing a specific hydroquinone derivative in the silver halide emulsion layer of substantially the surface latent image type or at least one hydrophilic colloid layer thereof and then developing the exposed light-sensitive element in the presence of a specific hydrazine compound. The method forms a photographic image having markedly high negative gradation.
Claims21
A method for forming a photographic image which comprises imagewise exposing a silver halide photographic light-sensitive element having a silver halide emulsion layer of substantially the surface latent image type, said silver halide emulsion layer or at least one member of other hydrophilic colloid layers containing a compound represented by formula (I) below, and developing the exposed light-sensitive element in the presence of a compound represented by formula (II) below:
- ##STR10## wherein X is an indazole radical which is linked to the benzene nucleus through the nitrogen atom at the 1- or 2-position thereof and which may be substituted;
- R.sup.1, R.sup.2 and R.sup.3 may be the same or different and each represents a hydrogen atom, an alkyl group, an aryl group, an alkylthio group, an arylthio group, a halogen atom, a hydroxy group, an alkoxy group, an aryloxy group, an acyl group, an alkoxycarbonyl group, an amido group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, a heterocyclic radical, or X, and R.sup.2 and R.sup.3 may combine together to form a ring;
- R.sup.4 and R.sup.5 each represents a hydrogen atom or a group which is hydrolyzed in the presence of an alkali;
- R.sup.6 NHNHCOR.sup.7 (II)
- wherein R.sup.6 represents an aryl group which may be substituted, and R.sup.7 represents a hydrogen atom, an aryl group which may be substituted, or an alkyl group which may be substituted.
Dependencies are inferred from the claim text.