Light-sensitive photoconductive recording material with light sensitive covering layer for use in manufacturing printing form or printed circuit

Claim 1

A light-sensitive recording material comprised of (A) an electrically conductive support which is suitable for the production of printing forms or printed circuits and which comprises at least one material selected from the group consisting of aluminum, zinc, magnesium, chromium, copper, metallized cellulose and paper, (B) at least one photoconductive layer having a first and a second surface, said photoconductive layer (i) consisting essentially of a photoconductor, a resin binder which is soluble in an aqueous or alcoholic alkaline solvent, and a sensitizing dye, wherein said photoconductor is an aromatic carbocyclic or heterocyclic compound that is substituted by at least one dialkylamino group, and (ii) being applied along said first surface to said support, and (C) a light-sensitive covering layer applied to said second surface of said photoconductive layer, said covering layer comprising a photochemically reactive composition which contains at least one compound having a solubility in an alkaline or alcoholic alkaline solvent which is reduced by actinic radiation, whereby said solvent is capable of decoating portions of said covering layer not exposed to actinic radiation and portions of said photoconductive layer located beneath said portions of said covering layer.