Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1977-05-20
1980-09-09
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430351, 430382, 430383, 430389, 430471, 430505, 430549, 430565, G03C 716
Patent
active
042218608
ABSTRACT:
A process for forming color photographic images having improved granularity, sharpness, and gradation by applying, after image exposure, a color reversal process including a step of performing color development in the presence of a competing coupler. The element processed is a multilayer reversal color photographic material comprising a support having coated thereon at least three differently sensitive photographic silver halide emulsion layers, the outermost layer of the color photographic material being blue-sensitive and containing a nondiffusible coupler forming a yellow dye by a coupling reaction with an oxidized primary aromatic amino color developing agent and represented by the following general formula (I) ##STR1## wherein R.sub.1 represents an alkyl group or an aryl group; R.sub.2 represents an aryl group or a heterocyclic group; and Z represents a non-metallic atom or the non-metallic atoms required to form a 4-membered ring, a 5-membered ring, or a 6-membered ring together with the ##STR2## moiety, one of the other two layers being green-sensitive and containing a nondiffusible coupler forming a magenta dye by a coupling reaction with an oxidized primary aromatic amino color developing agent, and the other layer being red-sensitive and containing a nondiffusible coupler forming a cyan dye by a coupling reaction with an oxidized primary aromatic amino color developing agent.
REFERENCES:
patent: 3227550 (1966-01-01), Whitmore et al.
patent: 3311476 (1967-03-01), Loria
patent: 4023970 (1977-05-01), Hellmig et al.
Mason, Photographic Processing Chemistry, _Wiley & Sons, N.Y., .COPYRGT.1975, pp. 257-269.
Hirose Takeshi
Okumura Akia
Brown J. Travis
Fuji Photo Film Co. , Ltd.
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