Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-06-03
1996-07-23
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430551, 430567, G03C 146
Patent
active
055388353
ABSTRACT:
A silver halide color photographic material comprising a support having provided thereon at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler and at least one red-sensitive silver halide emulsion layer containing a cyan coupler, wherein at least one layer contains at least one compound selected from those represented by the following formula (A) and the silver halide grains to be in at least one of the silver halide emulsion layers have a mean grain size of 0.25 .mu.m or smaller, ##STR1## wherein Ra.sub.1 to Ra.sub.5, which may be the same or different, each represents (1) a hydrogen atom, (2) an alkyl group, (3) --X--Ra.sub.0, or (4) a group necessary for forming a chroman ring by two of Ra.sub.1 to Ra.sub.5 which are ortho-positioned and are bonded to each other; X represents --C(Ra.sub.6)(Ra.sub.7)--, --O--, or --S--; Ra.sub.6 and Ra.sub.7 each represents a hydrogen atom or an alkyl group; Ra.sub.0 represents a hydroxyphenyl group, but it may be an alkyl group when X is --C(Ra.sub.6)(Ra.sub.7)--, both Ra.sub.6 and Ra.sub.7 are alkyl groups and both Ra.sub.1 and Ra.sub.5 are (--X--R.sub.0)'s; provided that Ra.sub.3 must not be a hydrogen atom, that at least one of Ra.sub.1 to Ra.sub.5 is the group (3) or (4) and that, when Ra.sub.3 is --X--Ra.sub.0 and Ra.sub.0 is a hydroxyphenyl group, both Ra.sub.1 and Ra.sub.5 must not be hydrogen atoms.
REFERENCES:
patent: 5104782 (1992-04-01), Seto et al.
patent: 5122444 (1992-06-01), Sakai
patent: 5275929 (1994-01-01), Buitano et al.
patent: 5294530 (1994-03-01), Seto et al.
patent: 5330888 (1994-07-01), Morigaki et al.
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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