Light sensitive material containing an ethylene compound dye former, an organic polymer compound containing chlorine and a plasticizer

An image-forming light-sensitive composition consisting essentially of (a) an organic polymer compound containing chlorine, (b) a coloring matter-forming compound represented by the formula:

• ##STR3## wherein R.sup.1 through R.sup.4 each represent a hydrogen atom, a lower alkyl group, or an aryl group, and R.sup.5 to R.sup.6 each represents a hydrogen atom, a lower alkyl group, or R.sup.5 and R.sup.6 combine with each other to form a 5- or 6-membered carbocyclic ring, and a plasticizing amount of a liquid plasticizer selected from the group consisting of a phthalic acid ester, a straight chain dibasic acid ester, a phosphoric acid ester, a ricinolate derived from castor oil, an epoxide, of an unsaturated aliphate acid a tri- or tetraethylene glycol ester of a C.sub.6 to C.sub.10 aliphatic acid, a polyester based plasticizer, a citric acid ester, a glycidyl ether, a glycol or polyhydric alcohol ester of acylic or methacrylic acid or a chlorinated paraffin hydrocarbon for said organic polymer containing chlorine and capable of dissolving the coloring matter-forming compound.