Process for developing an aqueous alkaline development diazo photographic element

Claim 1

A method for producing and using a photographic element which comprises coating a substrate with a light sensitive composition, which composition comprises in admixture: (i) from about 1% by weight to about 21% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a polyvinyl acetal resin; and (ii) from about 1.1% by weight to about 22% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a colorant; and (iii) from about 63% by weight to about 92% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a light-sensitive, water insoluble diazonium group-containing polycondensation product, which product is obtained first by condensation of (a) a diazonium salt corresponding to formula I ##STR2## wherein R 1 , R 2 and R 3 each denote separately a hydrogen atom, a halogen atom, an alkyl group having from 1 to 3 carbon atoms, or an alkoxy group having from 1 to 6 carbon atoms, and X denotes the anion of the diazonium salt; (b) with a compound corresponding to formula II R.sup.4 --O--CH.sub.2 --R.sup.5 (II) wherein R 4 denotes a hydrogen atom, an alkyl group or an aliphatic acyl radical and R 5 denotes a mononuclear or polynuclear aromatic radical, which is unsubstituted or substituted by a halogen atom, an alkyl group, a halogenated alkyl group, an alkoxy group having from 1 to 3 carbon atoms, a carboxy group, an aryl group, an arylmercapto group, or an aryloxy group, in a strongly acidic medium, and thereafter condensing with (c) a compound corresponding to formula III R.sup.6 --O--CH.sub.2 --R.sup.8 --CH.sub.2 --O--R.sup.7 (III) wherein R 6 and R 7 each denote separately a hydrogen atom, an alkyl group, or an aliphatic acyl radical, and R 8 denotes an aromatic hydrocarbon radical selected from the group consisting of a phenol, a phenolether, an aromatic thioether, an aromatic heterocyclic compound, and an organic acid amide, with the radicals resulting from compound II being directly linked to the units of the diazonium salt I; and thereafter imagewise exposing said coated substrate to actinic radiation and removing all or substantially all of the non-radiation-exposed areas with a non-organic solvent containing aqueous alkaline developer composition which consists essentially of in admixture: A. from about 80% by weight to about 95% by weight, based on the weight of said developer composition, water; and B. from about 7.7% by weight to about 17% by weight, based on the weight of said developer composition, of one or more salts selected from the group consisting of sodium, potassium, and ammonium hydroxides, silicates, phosphates, bicarbonates, oxalates, carbonates, sulfates, chlorides, acetates, benzoates, borates, citrates, salicylates, and pyrophosphates; and C. from about .3% by weight to about 3.0% by weight, based on the weight of said developer composition, of a anionic surfactant.

Claim 2

A method for producing and using a photographic element which comprises coating a substrate with a light sensitive composition, which composition comprises in admixture: (i) from about 1% by weight to about 21% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a polyvinyl acetal resin; and (ii) from about 1.1% by weight to about 22% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a colorant; and (iii) from about 63% by weight to about 92% by weight, based on the total weight of the non-solvent parts of said light sensitive composition, of a light-sensitive, water insoluble diazonium group-containing polycondensation product, which product is obtained first by condensation of (a) a diazonium salt corresponding to formula I ##STR2## wherein R 1 , R 2 and R 3 each denote separately a hydrogen atom, a halogen atom, an alkyl group having from 1 to 3 carbon atoms, or an alkoxy group having from 1 to 6 carbon atoms, and X denotes the anion of the diazonium salt; (b) with a compound corresponding to formula II R.sup.4 --O--CH.sub.2 --R.sup.5 (II) wherein R 4 denotes a hydrogen atom, an alkyl group or an aliphatic acyl radical and R 5 denotes a mononuclear or polynuclear aromatic radical, which is unsubstituted or substituted by a halogen atom, an alkyl group, a halogenated alkyl group, an alkoxy group having from 1 to 3 carbon atoms, a carboxy group, an aryl group, an arylmercapto group, or an aryloxy group, in a strongly acidic medium, and thereafter condensing with (c) a compound corresponding to formula III R.sup.6 --O--CH.sub.2 --R.sup.8 --CH.sub.2 --O--R.sup.7 (III) wherein R 6 and R 7 each denote separately a hydrogen atom, an alkyl group, or an aliphatic acyl radical, and R 8 denotes an aromatic hydrocarbon radical selected from the group consisting of a phenol, a phenolether, an aromatic thioether, an aromatic heterocyclic compound, and an organic acid amide, with the radicals resulting from compound II being directly linked to the units of the diazonium salt I; and thereafter imagewise exposing said coated substrate to actinic radiation and removing all or substantially all of the non-radiation-exposed areas with a non-organic solvent containing aqueous alkaline developer composition which consists essentially of in admixture: A. from about 80% by weight to about 95% by weight, based on the weight of said developer composition, water; and B. from about 7.7% by weight to about 17% by weight, based on the weight of said developer composition, of one or more salts selected from the group consisting of sodium, potassium, and ammonium hydroxides, silicates, phosphates, bicarbonates, oxalates, carbonates, sulfates, chlorides, acetates, benzoates, borates, citrates, salicylates, and pyrophosphates; and C. from about .3% by weight to about 3.0% by weight, based on the weight of said developer composition, of a anionic surfactant.