The formation processes of non-silver images in gelatin layers of silver halide photographic materials containing previously synthesized by two-stage chemical processing of asilver image, reactive matrice obtained from nickel hexacyan of errate (II) Ni
2 [Fe (CN)
6], upon the reactions with alkaline solutions of dithiooxamide and
N, N'-diphenyldithiooxamide.
D=
f (
DAg) relationships have been obtained and analyzed where
D is density of a non-silver image formed on the basis of the initial silver image having
DAg density, for a wide range of agent concentrations in the solution and various durations of the processing stage. The chemism of the process involved was studied in detail, it was also determined that in the Ni
2 [Fe (CH)
6]-
N, N'-diphenyldithiooxanide system, the photographic image formed is substantially single-component, while in Ni
2 [Fe (CN)
6]-dithiooxamide it is multicomponent. The possibility of practical applications of the process described for image application accompanied by complete silver removal from the layers was pointed out.
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