Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1987-08-11
1988-09-13
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430546, 430550, 430557, G03C 736
Patent
active
047709839
ABSTRACT:
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains at least one yellow dye-forming coupler represented by the formula (I) ##STR1## wherein R.sub.1 represents a substituted or unsubstituted tertiary alkyl group or a substituted or unsubstituted aryl group; R.sub.2 represents a chlorine atom or an alkoxy group; R.sub.3 represents a straight chain or branched chain alkyl group having from 8 to 26 carbon atoms; R.sub.4 represents a branched alkyl group having from 3 to 12 carbon atoms; and R.sub.5 represents a hydrogen atom or a halogen atom.
The yellow dye-forming coupler represented by the formula (I) is excellent in solubility, dispersion stability and spectral absorption characteristics, has a good coupling reactivity which is not severely influenced by variations in pH of the color developing solution, and provides a yellow color image having high color density and excellent stability.
A method for forming a yellow dye image in the presence of the yellow dye-forming coupler represented by the formula (I) is also disclosed.
REFERENCES:
patent: 3408194 (1968-10-01), Loria
patent: 3894875 (1975-07-01), Cameron et al.
patent: 3933501 (1976-01-01), Cameron et al.
patent: 4401752 (1983-08-01), Lau
U.S. patent application Ser. No. 07/046,750, Ogawa et al, filed 5-7-87.
Fukuzawa Hiroshi
Ogawa Akira
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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