Photographic color developer composition packaged in two or more

Details Photographic color developer composition packaged in two or more Photographic color developer composition packaged in two or more

1984-02-02

1985-02-26

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Developer

430450, 430467, 430484, G03C 530, G03C 730, G03C 524

Patent

active

045018120

ABSTRACT:
Color developer composition packaged in two or more concentrated parts, which on mixing with water give a ready-for-use silver halide developer solution, one part thereof comprising an aqueous concentrated solution containing a N-hydroxyalkylsubstituted p-phenylene diamine salt developing agent and a sulfite compound, said aqueous concentrated solution having a pH from 6 to 8. In particular, said N-hydroxyalkyl-substituted p-phenylene diamine developing agent is a 4-amino-3-methyl-N-ethyl-N-(.beta.-hydroxyethyl)-aniline and the molar ratio of the sulfite compound to the developing agent is higher than 1.5:1.

REFERENCES:
patent: 3574619 (1971-04-01), Surash
patent: 3615572 (1971-10-01), Bimmler et al.
patent: 3721563 (1973-03-01), Fisch et al.
patent: 3814606 (1974-06-01), Ozawa et al.

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