公开(公告)号：EP2755088A1

公开(公告)日：2014-07-16

申请号：EP13150972.1

申请日：2013-01-11

Applicant: Agfa Graphics N.V.

Inventor： Hendrikx, Peter ,  Sinnesael, Jan ,  Carbonini, Roberto ,  Verbrugghe, Sam

IPC: G03F7/30

CPC classification number: G03F7/32 ,  G03F7/20 ,  G03F7/3042 ,  G03F7/3064 ,  G03F7/3071

Abstract: A method of making a lithographic printing plate comprising the steps of:
a) image-wise exposing a lithographic printing plate precursor, comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer and, thereon, a light or heat sensitive coating comprising a photopolymerisable composition,
b) processing said precursor with a first solution, consecutively with a second solution, thereby removing the coating from the support in the non-printing areas,
wherein said first and second solutions are provided by a cascade system, wherein said second solution overflows into said first solution and said first solution overflows into a container to be further treated as waste,
wherein said second solution is regenerated by adding a replenishing solution or a mixture of replenishing solutions at a rate of at least 5 ml/m2 of treated precursor and at most 100 ml/m2 of treated precursor,
wherein said first and second solutions are circulated respectively by a first and second liquid conveying system,
wherein the first solution present in said first liquid conveying system has a volume of at least Vmin and at most Vmax respectively defined by formula 1 and formula 2,


wherein Vmin and Vmax represent respectively the minimum and maximum volume present in said first liquid conveying system, each of them expressed in liter, wherein A and B represents a constant value of respectively 2 and 15, and wherein said processing width represents the width, expressed in m, inside the processing unit, perpendicular to the processing direction, which is available for processing plate precursors in a uniform way across their width.

Abstract translation: 一种制造平版印刷版的方法，其包括以下步骤：a）将平版印刷版前体成像曝光，所述平版印刷版前体包含具有亲水表面的载体，或具有亲水层并且在其上具有光敏或热敏涂层 其包含可光聚合的组合物，b）用第一溶液连续用第二溶液处理所述前体，由此在非印刷区域中从载体上除去涂层，其中所述第一和第二溶液由级联系统提供，其中所述 第二溶液溢流到所述第一溶液中，并且所述第一溶液溢流到容器中以作为废物进一步处理，其中所述第二溶液通过以至少5ml / m 2的流速添加补充溶液或补充溶液的混合物而再生 经处理的前体和至多100ml / m 2的经处理的前体，其中所述第一和第二溶液分别通过冷冻循环 t和第二液体输送系统，其中存在于所述第一液体输送系统中的第一溶液具有分别由式1和式2定义的至少Vmin和至多Vmax的体积，其中Vmin和Vmax分别表示最小和最大体积存在量 在所述第一液体输送系统中，它们中的每一个均以升为单位表示，其中A和B分别表示2和15的恒定值，并且其中所述处理宽度表示处理单元内与处理单元垂直的宽度，以m表示 方向，可用于在其宽度上以统一的方式处理印版前体。