Warm image tone providing photographic element

Claim 2

A photographic element containing an incorporated developing agent and which forms a warm image tone photographic print upon successive processing in an akaline activator bath and a stabilizer bath, said element comprising a white reflective non-porous support, a silver halide emulsion layer which forms a viewable continuous tone silver image therein upon processing, wherein said silver halide is comprised of greater than 50 mole percent chloride, up to 5 mole percent iodide and the remainder bromide based on total halide, said layer additionally containing from 1 to 20 grams per mole of silver halide of an azaindene antifoggant, and in said emulsion layer or in a layer adjacent thereto, a mixture of from 1 to 10 mg per 0.1 meter 2 of a quaternary ammonium salt and from 1 to 10 mg per 0.1 meter 2 of a silver salt of a heterocyclic mercaptan represented by the general formula ##STR7## wherein Q represents the atoms necessary to complete a five-or six-membered heterocyclic ring.

Claim 3

A photographic element according to claim 1 wherein said silver halide emulsion is a silver chlorobromoiodide emulsion.

Claim 4

A photographic element according to claim 1 wherein said incorporated silver halide developing agent is a hydroquinone developing agent.

Claim 5

A photographic element according to claim 1 wherein a bisulfite preservative is present with said incorporated developing agent.

Claim 6

A photographic element according to claim 1 wherein said azaindene antifoggant is a tetraazaindene antifoggant.

Claim 7

A photographic element according to claim 1 wherein said quaternary ammonium salt is an N-heterocyclic quaternary ammonium salt.

Claim 8

A photographic element according to claim 6 wherein said N-heterocyclic quaternary ammonium salt is chosen from the class of pyridyl, α-picolyl, piperidyl and morpholinyl quaternary ammonium salts.

Claim 9

A photographic element according to claim 1 wherein said heterocyclic ring is a thiazole or tetrazole ring.

Claim 10

A photographic element according to claim 1 wherein said reflective non-porous support is a resin-coated paper support.

Claim 11

A photographic element according to claim 1 wherein said warm image tone providing mixture is present in an overcoat overlying said silver halide emulsion layer.

Claim 12

A multilayer photographic element which forms a warm image tone photographic print upon successive processing in an alkaline activator bath and a stabilizer bath following imagewise exposure comprising a resin-coated paper support, a silver halide emulsion layer which forms a viewable continuous tone silver image therein upon processing, wherein said silver halide is comprised of greater than 50 mole percent chloride, up to 5 mole percent iodide and the remainder bromide, based on total halide, said layer additionally containing from 1 to 20 grams per mole of silver halide of a tetraazaindene antifoggant, a layer located adjacent said emulsion layer comprising a mixture of 0.5 to 5.0 mg per 0.1 square meter of a pyridinium salt and from 1 to 10 mg per 0.1 square meter of a silver salt of a heterocyclic mercaptan represented by the general formula ##STR8## wherein Q represents the atoms necessary to complete a tetrazole or thiazole ring, and a hydroquinone developing agent located in at least one of said layers in an amount of from 50 to 200 mg per 0.1 squiare meter.

Claim 13

A multilayer photographic element which forms a warm image tone photographic print upon successive processing in an alkaline activator bath and a stabilizer bath following imagewise exposure comprising a resin-coated paper support, a silver halide emulsion layer which forms a viewable continuous tone silver image therein upon processing, wherein said silver halide is comprised of greater than 50 mole percent chloride, up to 5 mole percent iodide and the remainder bromide, based on total halide, said layer additionally containing from 1 to 20 grams per mole of silver halide of a tetraazaindene antifoggant, a layer located adjacent said emulsion layer comprising a mixture of 0.5 to 5.0 mg per 0.1 square meter of a pyridinium salt and from 1 to 10 mg per 0.1 square meter of a silver salt of a heterocyclic mercaptan represented by the general formula ##STR8## wherein Q represents the atoms necessary to complete a tetrazole or thiazole ring, and a hydroquinone developing agent located in at least one of said layers in an amount of from 50 to 200 mg per 0.1 squiare meter.

Claim 14

A photographic element according to claim 11 wherein said pyridinium salt is present in a concentration of from 1 to 3 mg per 0.1 meter 2 .

Claim 15

A photographic element according to claim 11 wherein said pyridinium salt is chosen from the class consisting of decamethylene-α--bis(oxymethylpyridinium perchlorate); hexadecylpyridinium chloride; tetradecamethylene-bis-(pyridinium perchlorate); 1,1'-bis pyridinium chloride; N,n'-ethylene bis-(oxymethyl pyridinium perchlorate; 7,14-diaza-6,15-dioxaeicosane-1,20-bis-(pyridinium perchlorate); 3,6,9,12,15,18,21,24-octaoxahexacosane bis-(pyridinium perchlorate); 7,18-diaza-6,19-dioxatetracosane-1,24-bis(pyridinium perchlorate); 3,6,9,12,15,18,24-octaoxahexacosane-1,26-bis(5-ethyl-2-methyl pyridinium methylsulfonate); 7,13-dithianonadecane-1,19-bis(pyridinium p-toluene sulfonate); 3,8-dithiadecane-1,10-bis(N-methyl piperidinium p-toluene sulfonate); 1,1'-ethylene-bis(pyridinium perchlorate) and carboxydecane-1-pyridinium perchlorate.

Claim 16

A photographic element according to claim 11 wherein said tetrazaindene is present in a concentration of from 3 to 15 gram per mole of silver halide.

Claim 17

A photographic element according to claim 14 wherein said tetrazaindene is chosen from the group consisting of 4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene; 2-carboxy-4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene; 4-hydroxy-6-methyl-1,2,3,3a,7-tetraazindene; 4-hydroxy-5-ethyl-6-methyl-1,3,3a,7-tetrazaindene and 2,4-dihydroxy-6-methyl-1,3a,7-tetraazaindene.

Claim 18

A photographic element according to claim 11 wherein said silver salt of a mercaptotetrazole or mercaptothiazole is chosen from the group consisting of 1-phenyl-5-mercaptotetrazole; 2-mercaptobenzothiazole; 2-mercapto-4-phenylthiazole; 2-mercapto-4-methyl-5-nitro-1,3-thiazole and 2-(acetylthioglycolic amido)benzothiazole.