abstract |
A positive imageable element comprises a radiation absorbing compound and an inner layer and an outer layer on a substrate having a hydrophilic surface. The inner layer can be removed by an alkaline developer, and the main chain and the following structure Q group: (wherein L 1 , L 2 and L 3 independently represent a linking group, and T 1 , T 2 and T 3 independently represents a terminal group, and a, b, and c are independently 0 or 1) A polymeric material comprising a linking group represented by: The imageable element has improved resistance to developer and printing chemicals and solvents. |