Patent ID: 6969579
Filing Date: 2005-11-29
Classification: B41C,Y10S

Abstract:
1. An imageable element comprising a top layer over a substrate, in which: the imageable element comprises a co-polymer or mixture of co-polymers, that comprise, in polymerized form: (a) about 10 wt % to 75 wt % of a monomer selected from the group consisting of monomers of structure I, monomers of structure II, and mixtures thereof; in which: R′ is hydrogen, halogen, or C X is —C(CH Y=—N(H)— or —O—; and n=0 to 12; the co-polymer or mixture of copolymers is soluble in an alkaline solution having a pH greater than about 8; the top layer is not removable by an alkaline developer before thermal imaging; imaged regions of the top layer are removable by the alkaline developer after thermal imaging; the imageable element additionally comprises a photothermal conversion material or a mixture of photothermal conversion materials; the imageable element comprises an underlayer between the top layer and the substrate; and the underlayer comprises the photothermal conversion material and the co-polymer.