Process for forming anti-halation layers of polyester photograph

Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Treating with processing composition prior to imaging and...

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427 40, 427 41, 427299, 427322, 430531, 430536, G03C 524

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active

049140116

ABSTRACT:
A process for forming an anti-halation layer on the surface of a polyester photographic film support comprises the steps of (1) subjecting the surface to an activation treatment such as, for example, corona discharge treatment; (2) coating the activated surface with a composition comprising an anti-halation agent, such as carbon black, and an alkali-soluble polymeric binder, such as cellulose acetate hexahydrophthlate, dispersed in a liquid organic medium; and (3) drying the coating to thereby form an anti-halation layer which is strongly adherent to the polyester film suport yet is readily removable by an alkaline photographic processing solution.

REFERENCES:
patent: 4039333 (1977-08-01), Shirogama et al.

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