Direct positive silver halide photographic emulsion
AssigneeFuji Photo Film Co., Ltd.
InventorsIchizo Toya, Yuji Mihara, Haruo Takei
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Abstract
A direct positive silver halide photographic emulsion which is able to provide a high maximum density and a low minimum density, and having a high developing progress. The emulsion contains at least one of the sensitizing dyes represented by following general formulate I, II, III, and IV and at least one of the compounds represented by general formulae V and VI; ##STR1## The substituents are defined in the specification.
Claims35
An internal latent image-type direct positive silver halide photographic emulsion containing a fogging agent which, during development or pre-bath processing, preferentially forms surface development nuclei comprising at least one sensitizing dye selected from the group consisting of dyes represented by general formulae II, and IV and the compound represented by general formula V;
- ##STR20## wherein V.sub.1, V.sub.2, V.sub.3, and V.sub.4 each represents a hydrogen atom, a halogen atom, a trifluoromethyl group, a cyano group, a carboxy group, an alkoxycarbonyl group, an aminosulfonyl group, or an alkylsulfonyl group;
- R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents an alkyl group or a substituted alkyl group;
- X.sub.1 represents an acid anion;
- and n.sub.1 represents 0 or 1;
- ##STR21## wherein R.sub.15 represents an alkyl group;
- R.sub.16 and R.sub.17 each represents an alkyl group or a substituted alkyl group;
- V.sub.9, V.sub.10, W.sub.11 and W.sub.12 each has the same significance as W.sub.1 in general formula I;
- X.sub.3 represents an acid anion;
- and n.sub.3 represents 0 or 1;
- ##STR22## wherein Z represents a non-metallic atomic group necessary for completing a thiazole nucleus, a thiazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a pyrrolidine nucleus, a pyridine nucleus, an oxazole nucleus, an oxazoline nucleus, an imidazole nucleus, an indolenine nucleus, a tetrazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzimidazole nucleus, a benzoxazole nucleus, a naphthoxathiazole nucleus, a napthoselenazole nucleus, a naphthoxazole nucleus, a napthoimidazole nucleus, or a quinoline nucleus;
- Q represents a non-metallic atomic group necessary for completing a rhodanine nucleus, a 2-thiooxazolidine-2,4-dione nucleus, 2-thioselenazolidine-2,4-dione nucleus, a barbituric acid nucleus, a 2-thiobarbituric acid nucleus, or a 2-thiohydantion nucleus;
- R.sub.20 and R.sub.21 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, or an allyl group;
- Y represents a hydrogen atom, an alkyl group, or an aryl group;
- and p represents 0 or 1.
A method for obtaining a direct positive image by the application of surface development in the presence of a fogging agent after image exposure wherein said method employs a photographic material, comprising a support having thereon at least one layer of an internal latent image type silver halide emulsion containing at least one sensitizing dye selected from the group consisting of dyes represented by general formulae II and IV and the compound represented by following general formula V ##STR25## wherein V.sub.1, V.sub.2, V.sub.3, and V.sub.4 each represents a hydrogen atom, a halogen atom, a trifluoromethyl group, a cyano group, a carboxy group, an alkoxycarbonyl group, an aminosulfonyl group, or an alkylsulfonyl group;
- R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents an alkyl group or a substituted alkyl group;
- X.sub.1 represents an acid anion;
- and n.sub.1 represents 0 or 1;
- ##STR26## wherein R.sub.15 represents an alkyl group;
- R.sub.16 and R.sub.17 each represents an alkyl group or a substituted alkyl group;
- V.sub.9, V.sub.10, W.sub.11, and W.sub.12 each has the same significance as W.sub.1 in general formula I;
- X.sub.3 represents an acid anion;
- and n.sub.3 represents 0 or 1;
- ##STR27## wherein Z represents a non-metallic atomic group necessary for completing a thiazole nucleus, a thiazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a pyrrolidine nucleus, a pyridine nucleus, an oxazole nucleus, an oxazoline nucleus, an imidazole nucleus, an indolenine nucleus, a tetrazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzimidazole nucleus, a benzoxazole nucleus, a naphthothiazole nucleus, a naphthoselenazole nucleus, a naphthoxazole nucleus, a naphthoimidazole nucleus, or a quinoline nucleus;
- Q represents a non-metallic atomic group necessary for completing a rhodanine nucleus, a 2-thiooxazolidine-2,4-dione nucleus, a 2-thioselenazolidine-2,4-dione nucleus, a barbituric acid nucleus, a 2-thobarbituric acid nucleus, or a 2-thiohydantoin nucleus;
- R.sub.20 and R.sub.21 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, or an allyl group;
- Y represents a hydrogen atom, an alkyl group, or an aryl group;
- and p represents 0 or 1.
A diffusion transfer photographic material comprising a photosensitive unit having at least one layer of an internal latent image type direct positive silver halide emulsion associated with a non-diffusible dye image-providing material capable of releasing a diffusible dye in proportion to the amount of developed silver in said silver halide emulsion layer, a dyeing unit for receiving said diffusible dye, and a processing composition unit for processing the photosensitive unit, said internal latent image type silver halide emulsion containing at least one sensitizing dye selected from the group consisting of dyes represented by general formulae II and IV and the compound represented by general formula V ##STR30## wherein V.sub.1, V.sub.2, V.sub.3, and V.sub.4 each represents a hydrogen atom, a halogen atom, a trifluoromethyl group, a cyano group, a carboxy group, an alkoxycarbonyl group, an aminosulfonyl group, or an alkylsulfonyl group;
- R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents an alkyl group or substituted alkyl group X.sub.1 represents an acid anion;
- and n.sub.1 represents 0 or 1;
- ##STR31## wherein R.sub.15 represents an alkyl group;
- R.sub.16 and R.sub.17 each represents an alkyl group or a substituted alkyl group V.sub.9, V.sub.10, W.sub.11, and W.sub.12 each has the same significance as W.sub.1 in general formula I;
- X.sub.3 represents an acid anion;
- and n.sub.3 represents 0 or 1;
- ##STR32## wherein Z represents a non-metallic atomic group necessary for completing a thiazole nucleus, a thiazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a pyrrolidine nucleus, a pyridine nucleus, an oxazole nucleus, an oxazoline nucleus, an imidazole nucleus, an indolenine nucleus, a tetrazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzimidazole nucleus, a benzoxazole nucleus, a naphthothiazole nucleus, a naphthoselenazole nucleus, a naphthoxazole nucleus, a napthoimidazole nucleus, or a quinoline nucleus;
- Q represents a non-metallic atomic group necessary for completing a rhodanine nucleus, a 2-thiooxazolidine-2,4-dione nucleus, a 2-thioselenazolidine-2,4-dione nucleus, a barbituric acid nucleus, a 2-thoibarbituric acid nucleus, or a 2-thiohydantoin nucleus;
- R.sub.20 and R.sub.21 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, or an allyl group;
- Y represents a hydrogen atom, an alkyl group, or an aryl group;
- and p represents 0 or 1 wherein said photographic material contains a fogging agent which, during development or pre-bath processing, preferentially forms surface development nuclei.
A diffusion transfer photographic material comprising a photosensitive unit comprising at least one layer of an internal latent image type silver halide emulsion associated with a non-diffusible dye image-providing material capable of releasing a diffusible dye in proportion to the amount of developed silver in said silver halide emulsion layer and a dyeing layer for receiving said diffusible dye, and a processing composition unit for processing the photosensitive unit, said internal latent image type silver halide emulsion contains at least one sensitizing dye selected from the group consisting of dyes represented by following general formulae II and IV and the compound represented by the following general formula V ##STR33## wherein V.sub.1, V.sub.2, V.sub.3, and V.sub.4 each represents a hydrogen atom, a halogen atom, a trifluoromethyl group, a cyano group, a carboxy group, an alkoxycarbonyl group, an aminosulfonyl group, or an alkylsulfonyl group;
- R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents an alkyl group or substituted alkyl group;
- X.sub.1 represents an acid anion;
- and n.sub.1 represents 0 or 1;
- ##STR34## wherein R.sub.15 represents an alkyl group;
- R.sub.16 and R.sub.17 each represents an alkyl group or a substituted alkyl group V.sub.9, V.sub.10, W.sub.11, and W.sub.12 each has the same significance as W.sub.1 in general formula I;
- X.sub.3 represents an acid anion;
- and n.sub.3 represents 0 or 1;
- ##STR35## wherein Z represents a non-metallic atomic group necessary for completing a thiazole nucleus, a thiazoline. nucleus, a selenazole nucleus, a selenazoline nucleus, a pyrrolidine nucleus, a pyridine nucleus, an oxazole nucleus, an oxazoline nucleus, an imidazole nucleus, an indolenine nucleus, a tetrazole nucleus, a benzothiazole nucleus, a benzoselenazole nucleus, a benzimidazole nucleus, a benzoxazole nucleus, a naphthothiazole nucleus, a naphthoselenazole nucleus, a naphthoxazole nucleus, a napthoimidazole nucleus, or a quinoline nucleus;
- Q represents a non-metallic atomic group necessary for completing a rhodanine nucleus, a 2-thiooxazolidine-2,4-dione nucleus, a 2-thioselenazolidine-2,4-dione nucleus, a barbituric acid nucleus, a 2-thoibarbituric acid nucleus, or a 2-thiohydantoin nucleus;
- R.sub.20 and R.sub.21 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, or an allyl group;
- Y represents a hydrogen atom, an alkyl group, or an aryl group;
- and p represents 0 or 1 wherein said photographic material contains a fogging agent which, during development or pre-bath processing, preferentially forms surface development nuclei.
Dependencies are inferred from the claim text.