Method for the formation of dye image

Details Method for the formation of dye image Method for the formation of dye image

1984-10-18

1986-01-21

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430489, 430544, G03C 716

Patent

active

045657742

ABSTRACT:
Method for forming a dye image comprising imagewise exposing and processing a silver halide light-sensitive color photographic material having a support and coated thereon a silver halide emulsion layer containing silver halide crystals, wherein said silver halide crystals consist essentially of crystals having at least 80 mole % of silver chloride, said developing taking place in a developer essentially free from bromide ion and having a pH value of at least 9.5, in the presence of a p-phenylenediamine color-developing agent and a compound of the formula ##STR1## having an acid dissociation constant of not more than 1.times.10.sup.-8 and a solubility product with silver ion of not more than 1.times.10.sup.-10, wherein Z, together with N forms a heterocyclic ring, said compound.

REFERENCES:
patent: 2490751 (1949-12-01), Hanson
patent: 2496940 (1950-02-01), Hanson et al.
patent: 3935014 (1976-01-01), Klotzer et al.
patent: 4063951 (1977-12-01), Bogg
patent: 4067739 (1978-01-01), Lewis

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