Aqueous developable color proofing elements

摘要

The incorporation of an alkyl vinyl- or aryl vinyl- maleic anhydride partial-ester copolymer having a plurality of ethylenically unsaturated groups in the color photosensitive layer of negative acting overlay and single sheet color proofing elements are described. The color proofing elements show improved exposure speed and highlight dot retention. In addition, the photosensitive color layer shows no inhibition to oxygen.