Patent ID: 7338745

Claim:
A positive-working imageable element comprising a radiation absorbing compound and a substrate having a hydrophilic surface, and having on said substrate, in order: an inner layer comprising a polymeric material comprising recurring units represented by the following Structure (IIa) or (IIb): wherein R and R 2 are independently hydrogen or a halo, alkyl, or phenyl group, R 1 is an electron withdrawing group, R 3 and R 4 are independently hydrogen or an alkyl, cycloalkyl, aryl, —C(O)R 5 group wherein R 5 is an alkyl, alkenyl, cycloalkyl, or aryl group, and Y is a direct bond or a divalent linking group, and Q is: wherein L 1 , L 2 , and L 3 independently represent linking groups, T 1 , T 2 , and T 3 independently represent terminal groups, and a, b, and c are independently 0 or 1, and an ink receptive outer layer, provided upon thermal imaging, the imaged regions of said element are removable by an alkaline developer.