Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1990-09-20
1992-02-25
Le, Hoa V.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430512, 430517, 430522, 430574, 430576, 430592, 430940, G03C 140
Patent
active
050912950
ABSTRACT:
'A positive-positive silver halide color photographic material comprising at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one blue-sensitive silver halide emulsion layer, at least one hydrophilic colloid layer, and at least one colloidal silver layer on a support wherein said silver halide emulsion layer, hydrophilic colloid layer, or colloidal silver layer contains at least one dye of formula (I): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each represents an alkyl group, an aryl gorup or a heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; n.sub.1 represents 1 or 2; and any of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 has a sulfo group and the total of the groups is at least two or more. A method of forming a color image using the same is also disclosed.
REFERENCES:
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patent: 4935337 (1990-06-01), Kuwashima et al.
patent: 4956269 (1990-09-01), Ikeda et al.
Patent Abstracts of Japan, vol. 12, No. 210 (P-717) (3047), Jun. 16, 1988, abstracting JP-A-63 8741, Jan. 14, 1988.
Patents Abstracts of Japan, vol. 13, No. 467 (P-948) (3815), Oct. 23, 1989, abstracting JP-A-1 183652, Jul. 12, 1989.
Aoki Mario
Kuwashima Shigeru
Fuji Photo Film Co. , Ltd.
Le Hoa V.
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