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    • 39. 发明授权
    • Method for producing lithographic plates with imaging elements
comprising a photosensitive acid precursor
    • 用于制造具有包含光敏酸前体的成像元件的平版印刷版的方法
    • US5851724A
    • 1998-12-22
    • US521045
    • 1995-08-29
    • Marc Van DammeJoan VermeerschEtienne SchachtStefan Vansteenkiste
    • Marc Van DammeJoan VermeerschEtienne SchachtStefan Vansteenkiste
    • G03F7/004G03F7/00G03F7/34G03F7/11
    • G03F7/346
    • The present invention provides a method for obtaining a lithographic printing plate comprising the steps of: (a) image-wise or information-wise exposing a photosensitive imaging element comprising on a hydrophilic surface of a support a hydrophobic photosensitive layer contiguous to said hydrophilic surface, comprising (i) a photosensitive acid precursor and (ii) a hydrophobic polymeric binder and (b) developing said exposed imaging element by the steps of: (i) laminating before or after said exposure an uppermost layer of said imaging element to a receptor layer and (ii) peeling away the receptor layer from the hydrophilic surface of the support thus transferring said hydrophobic photosensitive composition patternwise to the receptor layer, characterized in that said hydrophobic photosensitive layer comprises as photosensitive acid precursor a non-ionic photosensitive precursor of a sulphonic acid or a non-ionic photosensitive precursor of an optionally partially esterified phosphonic acid or a non-ionic photosensitive precursor of an optionally partially esterified phosphoric acid, the latter phosphonic or phosphoric acid precursors in the absence of an acid-sensitive composition of (a) low molecular weight compound(s).
    • 本发明提供一种获得平版印刷版的方法,包括以下步骤:(a)将包含在支持物的亲水表面上的感光成像元件成像或信息地曝光与所述亲水表面邻接的疏水感光层, 包括(i)感光酸前体和(ii)疏水聚合物粘合剂和(b)通过以下步骤显影所述暴露的成像元件:(i)在所述曝光之前或之后将所述成像元件的最上层层合到受体层 并且(ii)将接收层从支撑物的亲水表面剥离,从而将所述疏水光敏组合物图案转移到受体层,其特征在于,所述疏水光敏层包含作为感光酸前体的磺酸的非离子感光性前体 或任选部分酯化的膦酸的非离子光敏前体 酸或非任选部分酯化的磷酸的非离子感光性前体,后者的膦酸或磷酸前体在不存在(a)低分子量化合物的酸敏感组合物的情况下进行。