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1. 发明授权

US4226931A Process of making lithographic plate, and plate from photosensitive element 失效
标题翻译：光刻元件制作平版印刷版和印版的工艺
公开(公告)号：US4226931A
公开(公告)日：1980-10-07
申请号：US904579
申请日：1978-05-10
申请人： Ronald Neill , Marcel Pigeon
发明人： Ronald Neill , Marcel Pigeon
IPC分类号： B41N3/03 , G03F7/02 , B41M5/00 , B41N1/00
CPC分类号： B41C1/1016 , B41C2201/04 , B41C2210/04 , B41C2210/06 , B41C2210/24
摘要： The adherence of the oleophilic polymer printing surface of a lithographic printing plate to the support of the lithographic printing plate is improved by an anchoring layer formed from a hydrophobic oleophilic ester colloid which is capable of being rendered hydrophilic by treatment with an aqueous alkali solution. After an image-wise exposure of the photosensitive layer of the presensitized photosensitive sheet used to prepare the lithographic printing plate and removal of the non-polymerized (non-image) portions of the photosensitive layer the plate is contacted with an aqueous alkali solution to render those portions of the anchoring layer, which have been exposed by removal of the non-polymerized portions of the photosensitive layer, hydrophilic. Accordingly, the portions of the anchoring layer underlying the oleophilic hardened polymeric printing surface remain hydrophobic oleophilic and therefore can increase the number of satisfactory printings which can be made from the lithographic printing plate.
摘要翻译：平版印刷版的亲油性聚合物印刷表面对平版印刷版的支持体的粘附通过由能够通过用碱性水溶液处理而变得亲水的疏水性亲油性酯胶体形成的锚定层来改善。在用于制备平版印刷版的感光性感光层的感光层成像曝光后，除去感光层的非聚合（非图像）部分之后，使该板与碱性水溶液接触，已经通过去除感光层的非聚合部分而暴露的锚定层的那些部分是亲水的。因此，亲油硬化聚合物印刷表面下方的锚定层的部分保持疏水亲油性，因此可以增加可从平版印刷版制成的令人满意的印刷数。

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