Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A photographic colour coupler of the formula: wherein: A represents the atoms necessary to complete, with the nitrogen atom to which it is attached, a photographic magenta dye-forming colour coupler moiety whose coupling position is inactivated by the -CHR 1 R 2 group, R 1 is an alkyl-O-CO-, alkyl-CO-, aryl-0-C0, aryl-CO-, -COOH, -N0 2 or -CN group in which the alkyl and aryl groups are optionally substituted, and R 2 is one of the groups R 1 may represent or an arylcarbamoyl or (substituted aryl)-carbamoyl group.
Claim 2
Dependent Claim
86 words
A photographic colour coupler of the formula: wherein: A represents the atoms necessary to complete, with the nitrogen atom to which it is attached, a photographic magenta dye-forming colour coupler moiety whose coupling position is inactivated by the -CHR 1 R 2 group, R 1 is an alkyl-O-CO-, alkyl-CO-, aryl-0-C0, aryl-CO-, -COOH, -N0 2 or -CN group in which the alkyl and aryl groups are optionally substituted, and R 2 is one of the groups R 1 may represent or an arylcarbamoyl or (substituted aryl)-carbamoyl group.
Claim 3
Dependent Claim
38 words
A colour coupler as claimed in claim 1 in which at least one of R 1 and R 2 comprises an alkyl or aryl group optionally substituted with one or more -COOH, -S0 3 H and/or -OH groups.
Claim 4
Dependent Claim
22 words
A colour coupler as claimed in claims 1 or 2 in which A completes a pyrazolotriazole, pyrazolobenzimidazole or indazolin-3-one magenta coupler moiety.
Claim 5
Dependent Claim
87 words
A colour coupler as claimed in claim 3 in which A completes a coupler moiety having one of the following formulae in which the unattached bond shows the point of attachment of the -CH(R 1 )R 2 group: wherein R3 and R 4 are each an alkyl, aryl or heterocyclic group any of which may be substituted or a primary, secondary or tertiary amino, acylamino, hydroxy, alkoxy, alkylthio, carboxy or esterified carboxy group, and R 5 is H or a group which splits off during colour development.
Claim 6
Dependent Claim
18 words
A colour coupler according to claim 1 as described in Table 1 or Examples 1, 2 or 5.
Claim 7
Dependent Claim
37 words
A photosensitive photographic material comprising a support bearing at least one photosensitive silver halide emulsion layer and, contained in the emulsion layer or a layer adjacent thereto, a photographic colour coupler according to any of claims 1-5.
Claim 8
Dependent Claim
19 words
A photographic silver halide colour developing composition which contains a photographic colour coupler according to any of claims 1-5.