Patent ID: 6010821
Filing Date: 2000-01-04
Classification: G03F,Y10S

Abstract:
A color proofing element comprising a carrier having deposited thereon, in the following order:(a) a water-soluble or water-dispersible photosensitive color layer comprising(i) an acrylated polymer having at least one pendant unsaturated acrylate group and a weight-average molecular weight between 5,000 and 100,000;(ii) an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300;(iii) a colorant; and(iv) a water-soluble or water-dispersible triazine photoinitiator having the general structure: ##STR5## wherein: X is chlorine or bromine;R.sup.1 is selected from the group consisting of hydrogen, trichloromethyl, tribromomethyl, aryl, and alkyl having up to 15 carbon atoms;L is a linking group selected from the group consisting of carbamato, carbamido, amino, amido, alkyl having up to 15 carbon atoms, oxy, alkenyl, alkynyl, keto, ester, sulfonyl, aryl, and combinations thereof; andA is a group selected from sulfonic acid, carboxylic acid, phosphonic acid and salts thereof; and(b) a water-soluble or water-dispersible oxygen barrier layer,wherein said photosensitive color layer is rendered insoluble and indispersible in an aqueous developer upon exposure to radiation.