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    • 8. 发明授权
    • Method for making positive working printing plates
    • 制作正版印刷版的方法
    • US06458510B1
    • 2002-10-01
    • US09476109
    • 2000-01-03
    • Joan VermeerschMarc Van DammeDirk KokkelenbergBart Braspenninckx
    • Joan VermeerschMarc Van DammeDirk KokkelenbergBart Braspenninckx
    • G03F7004
    • B41C1/1016B41C2210/02B41C2210/04B41C2210/06B41C2210/14B41C2210/22B41C2210/24B41C2210/262B41N3/06Y10S430/145Y10S430/146Y10S430/165
    • According to the present invention there is provided a method for the preparation of a lithographic printing plate comprising the steps of exposing with IR light an imaging element comprising on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution and a top layer on the same side of the lithographic base as the first layer which top layer is IR-sensitive and unpenetratable for or insoluble in an alkaline developer wherein said first layer and said top layer may be one and the same layer, said imaging element comprising a siloxane surfactant; developing said exposed imaging element with an alkaline solution; rinsing said developed imaging element with water or an aqueous solution; gumming said developed imaging element with a baking gum solution; subjecting said gummed imaging element to a thermal treatment at a temperature above 50° C.; characterized in that said rinsing is carried out with a brushing and/or with water containing a surfactant.
    • 根据本发明,提供了一种制备平版印刷版的方法,包括以下步骤:用IR光照射成像元件,该成像元件在光刻基底上具有亲水表面,第一层包括可溶于碱性水溶液的聚合物 以及与所述第一层在所述平版印刷基底的相同侧上的顶层,所述第一层的顶层对于碱性显影剂是IR敏感的且不可渗透的或不溶于碱性显影剂,其中所述第一层和所述顶层可以是同一层,所述成像 元素,其包含硅氧烷表面活性剂;用碱性溶液显影所述暴露的成像元件;用水或水溶液漂洗所述显影的成像元件;用烘焙胶溶液涂覆所述显影的成像元件;使所述胶粘的成像元件在 温度高于50℃;其特征在于,所述冲洗是用刷洗和/或用水进行的 涂上表面活性剂。