Method for producing a photographic image from a Lippmann type s

Details Method for producing a photographic image from a Lippmann type s Method for producing a photographic image from a Lippmann type s

1983-03-08

1984-08-21

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Developing

430434, 430445, 430568, 430600, 430603, G03C 524, G03C 106, G03C 102

Patent

active

044670290

ABSTRACT:
A silver halide light-sensitive photographic material comprises a support and a Lippmann emulsion layer on the support containing a silver halide and at least one compound of the following formula in a quantity of at least 3.5.times.10.sup.-3 mole per mole of the silver halide of the Lippmann emulsion layer: ##STR1## wherein Z represents an atomic group necessary to form a heterocyclic ring; Y is a hydrogen atom or --S--R.sub.1 group; R and R.sub.1 are each a hydrogen atom, an alkali-metal atom, ammonium or an alkyl group; X and X.sub.1 are each a divalent organic group; m and m.sub.1 are each 0 or 1; and n is an integer of up to 3, provided if n is 0, Y is --S--R.sub.1 group.
The silver halide light-sensitive photographic material is developed in a developer containing at least 0.6 mole per liter of sulfurous ions.

REFERENCES:
patent: 4108661 (1978-08-01), Vanassche et al.
patent: 4202695 (1980-05-01), Philippaerts et al.
patent: 4379837 (1983-04-01), Lapp et al.

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