Color photographic print material
AssigneeAgfa-Gevaert
InventorsRalf Weimann, Markus Geiger, Axel Jochum
Life of this patent
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Abstract
A color photographic print material having at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, characterized in that the cyan coupler is of the formula in which R6-R9, X and Z are defined in the specification, and the magenta coupler is of the formula in which R1-R5, Y, A, B and n are defined in the specification, and is distinguished by good color reproduction, dark stability and light stability.
Claims5
A colour photographic print material having at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, characterised in that the cyan coupler is of the formula II
- in which
- R6 means a hydrogen atom or an alkyl group,
- R7 means an alkyl, aryl or hetaryl group,
- R8 means an alkyl or aryl group,
- R9 means an alkyl, alkenyl, alkoxy, aryloxy, acyloxy, acylamino, sulfonyloxy, sulfamoylamino, sulfonamido, ureido, hydroxycarbonyl, hydroxycarbonylamino, carbamoyl, alkylthio, arylthio, alkylamino or arylamino group or a hydrogen atom,
- Z means a hydrogen atom or a group eliminable under the conditions of chromogenic development,
- X means S, NH or NR10 and
- R10 means an alkyl or aryl group,
- and the magenta coupler is of the formula
- in which
- R1 means a tertiary alkyl residue,
- R2 and R3 each mean a hydrogen atom or a substituent group,
- Y means a hydrogen atom, a halogen atom or an aryloxy residue,
- A and B each mean —CO— or —SO2—,
- n means 0 or 1,
- R4 means a hydrogen atom, an alkyl residue or an aryl residue and
- R5 means an alkyl residue, an aryl residue, an alkoxy residue, an alkylamino residue or an arylamino residue or
- R4 and R5 may be joined together to form a five-, six- or seven-membered ring.
Dependencies are inferred from the claim text.