Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1984-08-20
1986-12-02
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430231, 430233, G03C 554
Patent
active
046264957
ABSTRACT:
A photographic image receiving element for a silver salt diffusion transfer process which comprises a hydrolyzable first alkali impermeable polymer layer applied on a base and an image receiving layer thereon comprising a hydrolyzable second alkali impermeable polymer layer containing silver precipitation nuclei which is prepared by hydrolyzing at least a part of the hydrolyzable second alkali impermeable polymer layer so as to be alkali permeable, the improvement wherein at least one hydrophilic copolymer layer containing at least one of gum arabic and arabic acid is coated between said first alkali impermeable polymer layer and said image receiving layer, and said first alkali impermeable polymer layer contains at least one compound represented by formula (I) or formula (II) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, or an aryl group having from 6 to 12 carbon atoms, ##STR2## wherein A and B each represents a nitrogen atom or a carbon atom, provided that A and B are not both nitrogen atoms, m is 0 when A is a nitrogen atom, n is 0 when B is a nitrogen atom, and m and n are 1 when A and B are each a carbon atom, R.sub.5, R.sub.6 and R.sub.7 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group having from 6 to 20 carbon atoms, and R.sub.6 and R.sub.7 together can additionally represent a substituted or nonsubstituted aromatic carbocyclic ring (preferably 6-membered) together with A and B.
REFERENCES:
patent: 3607269 (1971-09-01), Young
patent: 3873317 (1975-03-01), Kato et al.
patent: 4520096 (1985-05-01), Endo et al.
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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