Photosensitive material and a process for reproducing photo-information.

摘要

Photosensitive recording material and process for producing wash-off images therewith, which material comprises on a support: (1) a photosensitive recording layer capable of obtaining in the photo-exposed area a selective increase or decrease of solubility in an alkaline aqueous liquid so that it can yield a negative or positive resist pattern by wash-off treatment with an aqueous alkaline liquid, (2) subjacent to said photosensitive layer and in water permeable relationship therewith a dyed and/or pigmented alkali-soluble non-photosensitive binder layer, characterized in that said non-photosensitive layer comprises in a proportion of at least 50 % by weight with respect to the dye(s) and/or pigment(s) a non-gelatinaceous binder being a binding agent or mixture of binding agents containing free carboxylic acid groups in such a degree that it has a total acid number between 90 and 350, the non-photosensitive binder layer being not soluble in pure water at 20 DEG C but soluble in a 0.5% by weight aqueous sodium hydroxide solution at 20 DEG C.