公开(公告)号：US06251563B1

公开(公告)日：2001-06-26

申请号：US09163371

申请日：1998-09-30

申请人： Marc Van Damme ,  Joan Vermeersch ,  Guido Hauquier ,  Eric Verscheuren

发明人： Marc Van Damme ,  Joan Vermeersch ,  Guido Hauquier ,  Eric Verscheuren

IPC分类号： G03F7004

CPC分类号： B41C1/1016 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/24 ,  B41C2210/262 ,  Y10S430/145

摘要： According to the present invention there is provided a method for making lithographic printing plates including the following steps a) preparing a heat mode imaging element consisting of a lithographic base with a hydrophilic surface and a top layer which top layer is sensitive to IR-radiation, comprises a polymer, soluble in an aqueous alkaline solution and is unpenetrable for an alkaline developer containing SiO2 as silicates; b) exposing imagewise said heat mode imaging element to IR-radiation; c) developing said imagewise exposed heat mode imaging element with said alkaline developer so that the exposed areas of the top layer are dissolved and the unexposed areas of the top layer remain undissolved characterized in that said top layer includes an IR-absorbing pigment and 3,4,5-trimethoxybenzoic acid or a benzophenone.

摘要翻译： 根据本发明，提供一种制备平版印刷版的方法，包括以下步骤：a）制备由具有亲水表面的光刻基底和顶层对IR辐射敏感的顶层组成的热模式成像元件，包括 一种可溶于碱性水溶液的聚合物，对于含有SiO 2的硅酸盐的碱性显影剂是不可穿透的; b）使成像的所述热模式成像元件暴露于IR辐射; c）用所述碱性显影剂显影所述成像曝光的热模式成像元件 顶层的暴露区域被溶解，并且顶层的未曝光区域保持未溶解，其特征在于所述顶层包括IR吸收颜料和3,4,5-三甲氧基苯甲酸或二苯甲酮。