Sperrschicht für ein Bilderzeugungsverfahren durch Laserablation

摘要

An ablative recording element has a support carrying, in order: (1) a barrier layer which contains to hydrophobic vinyl polymer with recurring units of formula (I), and (2) a colourant layer which contains a colourant dispersed in a polymeric binder and which is associated with an IR absorbing material. -[-CH2-C(R1)(R2)-]- (I) R1 and R2 = CN isocyanate, azole, sulphonyl, NO2, phosphoric, phosphonyl, heteroaryl or -C(X)-R3; X = O, S, NR or N+(R)2; R3 = R, OR, O-M+, OCOOR, SR, NHCOR, NHCON(R)2, N(R)2 or N+(R)3, M+ = an alkali or ammonium moiety; and R = H, halogen or alkyl. Also claimed is a process for forming a single colour ablation image involving exposing the above element through the colourant layer with a laser and removing the ablated colourant to give an image.