Method of improving the light resistance of a dye image
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsToyoki Nishijima, Kaoru Onodera
Life of this patent
Estimating the term…
Loading patent…
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsToyoki Nishijima, Kaoru Onodera
Estimating the term…
A photographic element comprising a support having thereon a layer containing a dye that is formed by the reaction of an anilino-type magenta coupler with the oxidized product of a color developing agent, the said layer comprising an organic solvent having a dielectric constant of not more than 6.5 and at least one of metallic complexes having the following Formula [I], Formula [II] or Formula [III]: ##STR1## In Formulas [I], [II] and [III], M is a nickel atom, copper atom, cobalt atom, palladium atom or platinum atom; X.sub.1 and X.sub.2 each is an oxygen atom, sulfur atom or --NR.sub.5 -- (wherein R.sub.5 is a hydrogen atom, an alkyl, aryl or hydroxyl radical); X.sub.3 is a hydroxyl or mercapto radical; Y is an oxygen atom or sulfur atom; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is a hydrogen atom or a halogen atom or a cyano radical, or an alkyl, aryl, cycloalkyl or heterocyclic radical which each is bonded directly or through a divalent combining radical to a carbon atom; and at least one of the R.sub.1 -R.sub.2 and R.sub.3 -R.sub.4 combinations is allowed to form a 5- or 6-member cyclic ring together with the carbon atoms which are bonded with each other; and Z is a compound coordinateable to M.
A photographic element comprising a support having thereon a layer containing a silver halide emulsion and an anilino-type magenta coupler, wherein said layer comprises an organic solvent having a dielectric constant of not greater than 6.5 and a metallic complex having the following Formula (Ia), (IIa), or (IIIa):
A method of improving the light resistance of a dye image formed in a photographic element which comprises incorporation of a metallic complex compound having Formula (Ia) (IIa) or (IIIa) described below and an organic solvent having a dielectric constant of not greater than 6.5 into a layer of said photographic element comprising a silver halide emulsion and an anilino-type magenta coupler:
Dependencies are inferred from the claim text.