Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1984-01-25
1985-11-26
Kittle, John E.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430505, 430574, 430576, 430588, 430589, G03C 726, G03C 732, G03C 110
Patent
active
045554811
ABSTRACT:
A silver halide photographic emulsion is disclosed which contains at least one of benzimidazolocarbocyanine dyes represented by the general formula (I) or (II): ##STR1## wherein a represents an integer of 1 to 8, R.sub.1, R.sub.2 and which may be identical with or different from one another, represent each --CH.sub.2 (CF.sub.2).sub.b H or a substituted or unsubstituted alkyl group, but at least one of R.sub.1, R.sub.2 and R.sub.3 contains an acid group-containing alkyl group, wherein b, which may be identical with or different from a, represents an integer of 1 to 8, l represents 0 or an integer of 1 to 8, and m represents 0 or an integer of 1 to 8, but l+m>0; R.sub.4, R.sub.5 and R.sub.6, which may be identical or different from one another, represent each --(CH.sub.2).sub.j (CF.sub.2).sub.k F or a substituted or unsubstituted alkyl group, but at least one of R.sub.4, R.sub.5 and R.sub.6 represents an acid group (for example, sulfo group or carboxyl group, etc.)-containing alkyl group; j represents 0 or an integer of 1 to 8; and k represents 0 or an integer of 1 to 8, but j+k>0; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6, V.sub.7 and V.sub.8, which may be identical with or different from one another, represent each a hydrogen atom, a halogen atom, a substituted alkyl group, an unsubstituted alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a cyano group or a trifluoromethyl group; X represents an anion; and n represents 1 or 2 but represents 1 when the dye forms an inner salt.
The emulsion has good stability to the passage of time, in which an increase of fog under a high temperature or under a high temperature and a high humidity is controlled and reduction of sensitivity with the passage of time is minimized.
REFERENCES:
patent: 2739149 (1956-03-01), Van Lare
patent: 2912327 (1959-11-01), Maurer
patent: 2912329 (1959-11-01), Jones et al.
patent: 3769025 (1973-10-01), Ohkubo et al.
patent: 3988513 (1976-10-01), Matsuyama et al.
patent: 4179296 (1979-12-01), Sato et al.
Troitskaya, V. I. et al., "Cyanine Dyes Containing Fluorine XXVIII. Imidacyanine Dyes with Fluoroalkyl Groups at the Nitrogen Atoms of Benzimidazole", C.A. vol. 79, 54858k, 1973.
Okazaki Masaki
Takei Haruo
Toya Ichizo
Ukai Toshinao
Fuji Photo Film Co. , Ltd.
Kittle John E.
Shah Mukund J.
LandOfFree
Silver halide photographic emulsions containing benzimidazolocar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silver halide photographic emulsions containing benzimidazolocar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silver halide photographic emulsions containing benzimidazolocar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-269804