Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1978-10-10
1980-04-22
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
548374, 430554, 430570, G03C 140
Patent
active
041993616
ABSTRACT:
A color photographic light-sensitive element comprising a support having thereon a silver halide emulsion layer containing therein a 3-anilino-5-pyrazolone magenta color-forming coupler represented by the following general formula (I): ##STR1## wherein R represents an aliphatic hydrocarbon group having up to about 35 carbon atoms, a heterocyclic group having up to about 22 carbon atoms or an aromatic group having up to about 22 carbon atoms; X represents a halogen atom or an alkoxy group having up to about 22 carbon atoms; Z represents a hydrogen atom or a coupling off group; and Y.sub.1, Y.sub.2, Y.sub.3, Y.sub.4 and Y.sub.5, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group having 1 to 5 carbon atoms, a trifluoromethyl group, an alkoxy group having 1 to 5 carbon atoms, an acylamino group having 1 to 30 carbon atoms, an alkylsulfonyl group having 2 to 30 carbon atoms or a sulfonamido group having 1 to 30 carbon atoms and the RS group is present at the 4- or 5-position of the anilino group. The magenta color-forming coupler prevents yellow staining at the unexposed area after color development processing particularly arising due to irradiation of light.
REFERENCES:
patent: 3798234 (1974-03-01), Meier et al.
patent: 3907571 (1975-09-01), Arai et al.
patent: 3935015 (1976-01-01), Arai et al.
patent: 3960571 (1976-06-01), Okumura et al.
patent: 4062683 (1977-12-01), Monbaliu et al.
Fuji Photo Film Co. , Ltd.
Louie, Jr. Won H.
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