Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1986-11-28
1988-09-27
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430386, 430387, G03C 738
Patent
active
047741724
ABSTRACT:
Silver halide color photographic materials are described, which comprise at least one silver halide emulsion layer coated on a support and which are characterized by the incorporation of a pyrazoloazole type coupler of the following general formula (I) into the silver halide emulsion layer(s) or the adjacent layer(s) thereto: ##STR1## wherein Za and Zb each may represent ##STR2## R.sup.1 and R.sup.2 each may represent a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being removed upon a coupling reaction with an oxidized form of an aromatic primary amine type developing agent; when Za.dbd.Zb is a carbon-carbon double bond, this may be a part of the aromatic ring in the formula: with the proviso that at least one of R.sup.1 and R.sup.2 is a group represented by general formulae (II) or (III): ##STR3## wherein R.sup.3 represents a hydrogen atom or a substituted or unsubstituted alkyl group; R.sup.4 represents a hydrogen atom or a substituent; R.sup.5 represents a halogen atom, a substituted or unsubstituted alkoxy, aryloxy, amino, alkylthio or arylthio group; Ar represents an aryl group; Y represents an alkylene group or an arylene group; l' is an integer of 0 or 1; n is an integer of 0 or 1; and m is an integer of 1 to 3; and that when R.sup.1 represents an alkyl group or Y represents an alkylene group, the alkyl or alkylene group is a group of which the carbon atom directly bonded to the pyrazoloazole nucleus is a primary carbon.
The pyrazoloazole type magenta couplers of general formula (I) may form azomethine dyes with improved color reproducibility and high light fastness. The present silver halide color photographic materials containing the coupler of general formula (I) have excellent colorability and excellent light fastness.
REFERENCES:
patent: 4548899 (1985-10-01), Nakayama et al.
patent: 4639415 (1987-01-01), Kaneko et al.
patent: 4659652 (1987-04-01), Kawagishi et al.
Furutachi Nobuo
Kamio Takayoshi
Kawagishi Toshio
Kimura Keizo
Sato Tadahisa
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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