DIR coupler that forms colorless reaction product

Claim 2

A light-sensitive silver halide photographic material which comprises a compound forming a substantially colorless compound and releasing a development inhibitor by reacting with a oxidation product of a colour developing agent and having the following formula: ##STR7## wherein A represents an oxygen atom or a =NR 1 radical in which R 1 is a hydroxyl or an amino radical that may be substituted, Z represents a non-metallic atomic group necessary to complete a 5-, 6- or 7-membered alicyclic or heterocyclic ring containing nitrogen, oxygen or sulfur, X represents a halogen atom, ##STR8## or -S-Y in which W represents an alkyl, aryl, heterocyclic ring, acyl or -SO 2 R 2 radical wherein R 2 represents an alkyl, aryl or a heterocyclic ring radical, and V represents a non-metallic atomic group necessary to complete a heterocyclic ring containing nitrogen and Y represents a radical that forms a compound having development inhibiting action together with the sulfur atom when the --SY bond of the thioether is split.

Claim 3

A light-sensitive silver halide photographic materials as claimed in claim 1 in which Z represents a non-metallic atomic group necessary to complete a 5-, 6- or 7-membered alicyclic or heterocyclic ring containing an oxygen, nitrogen, or sulfur atom, each of which may be saturated or unsaturated and/or substituted with one or more of alkyl, aryl, alkoxyl, acyl, alkoxycarbonyl, halogen, nitrite, nitro, sulfonamido or acylamino or -S-Y radical and may form a condensed ring, V represents a non-metallic atomic group which together with ##STR9## forms a heterocyclic ring selected from the group consisting of succinimide, phthalimide, hydantoin and urazol and Y represents a radical that forms a compound having development inhibiting action together with the sulfur atom when the --S-Y bond of the thioether is split, the compound being selected from the group consisting of an arylmercapto compound, a heterocyclic mercapto compound, a thioglycolic acid type compound, cysteine and glutathione.

Claim 4

A light-sensitive silver halide photographic material as claimed in claim 2 in which A represents an oxygen atom, and X represents a halogen atom.

Claim 5

A light-sensitive silver halide photographic material as claimed in claim 2 in which A represents =NR 1 in which R 1 is a hydroxyl or an amino radical that may be substituted, and X represents a halogen atom.

Claim 6

A light-sensitive silver halide photographic material as claimed in claim 2 in which Z represents an atom group selected from the group consisting of groups necessary to complete cyclopentanone, cyclohexanone, cyclohexadione, cyclohexenone, 2-, 3- and 4-piperidone, pyrrolidone, hydantoin, indanone, benzocyclohexenone, benzocycloheptenone and oxyindole.

Claim 7

A light-sensitive silver halide photographic material as claimed in Claim 2 wherein Y represents a radical that forms a compound having development inhibiting action, the compound being selected from the group consisting of 1-phenyl-2-mercaptotetrazole, 1-nitro-phenyl-5-mercaptotetrazole, 1-naphthyl-5-mercaptotetrazole, 2-mercaptothiazole, 2-mercaptobenzthiazole, mercaptonaphthothiazole, mercapto-oxadiazole, mercaptopiperidine, 2-mercaptothiadiazolotriazine, mercaptotriazine, mercaptobenzene, 1-mercapto-2-benzoic acid, 1-mercapto2-nitrobenzoic acid, 1-mercapto-2-nitrobenzene, and 1-mercapto-3-heptadecanoyl-aminobenzene.

Claim 8

A light-sensitive silver halide photographic material of Claim 1, wherein the compound of the said formula is selected from the group consisting of ##STR10##

Claim 9

A process for developing an imagewise exposed light-sensitive silver halide photographic material comprising a compound forming a substantially colourless compound and releasing a development inhibitor by reacting with an oxidation product of a colour developing agent and having the following formula: ##STR11## wherein A represents an oxygen atom or a =NR 1 radical in which R 1 is a hydroxyl or an amino radical that may be substituted, Z represents a non-metallic atomic group necessary to complete a 5-, 6- or 7-membered alicyclic ring or a heterocyclic ring containing nitrogen, oxygen or sulfur, X represents a halogen atom, ##STR12## or -S-Y in which W represents an alkyl, aryl, heterocyclic ring, acyl or -SO 2 R 2 radical wherein R 2 represents an alkyl, aryl or a heterocyclic ring radical, and V represents a non-metallic atomic group necessary to complete a heterocyclic ring containing nitrogen and Y represents a radical that forms a compound having development inhibiting action together with the sulfur atom when the --SY bond of the thioether is split which process comprises developing the exposed material with an alkaline developer containing a colour developing agent.

Claim 10

A process for developing an imagewise exposed light-sensitive silver halide photographic material comprising a compound forming a substantially colourless compound and releasing a development inhibitor by reacting with an oxidation product of a colour developing agent and having the following formula: ##STR11## wherein A represents an oxygen atom or a =NR 1 radical in which R 1 is a hydroxyl or an amino radical that may be substituted, Z represents a non-metallic atomic group necessary to complete a 5-, 6- or 7-membered alicyclic ring or a heterocyclic ring containing nitrogen, oxygen or sulfur, X represents a halogen atom, ##STR12## or -S-Y in which W represents an alkyl, aryl, heterocyclic ring, acyl or -SO 2 R 2 radical wherein R 2 represents an alkyl, aryl or a heterocyclic ring radical, and V represents a non-metallic atomic group necessary to complete a heterocyclic ring containing nitrogen and Y represents a radical that forms a compound having development inhibiting action together with the sulfur atom when the --SY bond of the thioether is split which process comprises developing the exposed material with an alkaline developer containing a colour developing agent.

Claim 11

A process for developing a light-sensitive silver halide photographic material as claimed in claim 8 in which Z represents a non-metallic atomic group necessary to complete a 5-, 6- or 7-membered alicyclic or heterocyclic ring containing an oxygen, nitrogen, or sulfur atom, each of which may be saturated or unsaturated and/or substituted with one or more of alkyl, aryl, alkoxyl, acyl, alkoxylcarbonyl, halogen, nitrile, nitro, sulfonamide or acylamino or -S-Y radical and may form a condensed ring, V represents a non-metallic atomic group which together with ##STR13## forms a heterocyclic ring selected from the group consisting of succinimide, phthalimide, hydantoin and urazol, and Y represents a radical that forms a compound having development inhibiting action together with the sulfur atom when the -S-Y bond of the thioether is split, the compound being selected from the group consisting of an arylmercapto compound, heterocyclic mercapto compound, thioglycolic acid type compound, cysteine and glutathione.

Claim 12

A process for developing a light-sensitive silver halide photographic material as claimed in claim 9 in which A represents an oxygen atom, and X represents a halogen atom.

Claim 13

A process for developing a light-sensitive silver halide photographic material as claimed in claim 9 in which A represents =NR 1 in which R 1 is a hydroxyl or an amino radical that may be substituted, and X represents a halogen atom.

Claim 14

A process for developing a light-sensitive silver halide photographic material as claimed in claim 9 in which Z represents an atom group selected from the group consisting of groups necessary to complete cyclopentanone, cyclohexanone, cyclohexadione, cyclohexenone, 2-, 3- and 4-piperidone, pyrollidone, hydantoin, indanone, benzocyclohexenone, benzocycloheptenone and oxyindole.

Claim 15

A process for developing a light-sensitive silver halide photographic material as claimed in claim 9 wherein Y represents a radical that forms a compound having development inhibiting action, the compound being selected from the group consisting of 1-phenyl2-mercaptotetrazole, 1-nitrophenyl-5-mercaptotetrazole, 2-mercaptothiazole, 2-mercaptobenzthiazole, mercaptonaphthothiazole, mercapto-oxadiazole, mercaptopiperidine, 2-mercaptothiadiazolotriazine, mercaptotriazine, mercaptobenzene, 1-mercapto-2-benzoic acid, 1-mercapto-2-nitrobenzoic, 1-mercapto-2-nitrobenzene, and 1-mercapto-3-heptadecanoylaminobenzene.

Claim 16

A process of Claim 8, wherein the compound of the said formula is selected from the group consisting of ##STR14##