Processing composition for use in silver salt diffusion transfer

Details Processing composition for use in silver salt diffusion transfer Processing composition for use in silver salt diffusion transfer

1984-11-14

1986-02-04

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

430244, 430249, 430455, 430487, 430489, 430490, G03C 554, G03C 530, G03C 538

Patent

active

045686343

ABSTRACT:
The present invention relates to a composition for processing, by the silver salt diffusion transfer technique, a photographic material which contains a developing agent and at least one each of a silver halide photographic emulsion layer and an image receiving layer containing nuclei for physical development. The composition contains about 0.03 mol/l to about 0.10 mol/l of a phosphate salt and about 0.3 mol/l to about 1.0 mol/l of a compound of the following formula (I): ##STR1## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.1 is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R.sup.2 and R.sup.3 are each a hydrogen atom or a hydroxyl group, respectively; m and n are each 0 or 1, provided that m and n are not 0 at the same time. The processing composition allows for obtaining a high contrast image by the silver salt diffusion transfer technique.

REFERENCES:
patent: 3576633 (1971-04-01), Henn et al.
patent: 3645731 (1972-02-01), Liebe et al.
patent: 4147543 (1979-04-01), Kubotera et al.
patent: 4298673 (1981-11-01), Kubotera et al.
patent: 4362811 (1982-12-01), Iguchi et al.

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