Abstract: A photosensitive material for the production of color proofing films for multicolor printing, having(A) a transparent, flexible film support of plastic,(B) a photopolymerizable layer which contains(B1) a polymeric binder,(B2) a free-radically polymerizable compound,(B3) a compound which is capable of initiating the polymerization of (B2) on exposure to actinic light, and(B4) a dye or a colored pigment in a primary color of multicolor printing, and(C) a thermoplastic adhesive layer having a layer weight of from about 2 to about 30 g/m.sup.2 on the photo-sensitive layer, wherein the thermoplastic adhesive layer contains from about 0.01 to about 0.5% by weight of a colorless pigment having a mean particle size which corresponds to from 1 to 100% of the layer thickness.

Abstract: The present invention relates to a process for producing a negative-working photosensitive lithographic printing form, in which a negative-working photosensitive mixture which is dissolved in a solvent mixture and which contains a negative-working photosensitive compound and a polymeric binder which is insoluble in water but soluble in aqueous alkaline solution is applied to a base and the layer obtained is subsequently dried, which process comprises using a mixture of more than 2% by weight of at least one monoether of diethylene glycol with one or more organic solvent(s) having a boiling point below 200.degree. C. as the solvent mixture.