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    • 5. 发明申请
    • Method of making lithographic printing plates
    • 平版印刷版的制作方法
    • US20080145789A1
    • 2008-06-19
    • US11549160
    • 2006-10-13
    • Elizabeth Knight
    • Elizabeth Knight
    • G03F7/00
    • B41C1/1008B41C1/1016B41C2201/02B41C2201/14B41C2210/04B41C2210/08B41C2210/22B41C2210/24B41C2210/266G03F7/3035G03F7/38
    • A negative-working imageable element having an imageable layer on a substrate can be used to form an imaged element by imagewise exposing it to form exposed and non-exposed regions in the imageable layer. The imageable element also has a water-soluble topcoat disposed on the imageable layer. With or without a preheat step, the water-soluble topcoat is at least partially removed with water or an aqueous solution that incompletely or not at all removes the non-exposed regions of the imageable layer. The element is then mounted in a printing press and contacted with a fountain solution, a lithographic printing ink, or a combination of a fountain solution and a lithographic printing ink, thereby removing non-exposed regions of the imageable layer at the beginning of the printing operation.
    • 可以使用在基板上具有可成像层的负性可成像元件,通过成象曝光来形成成像元件,以在可成像层中形成曝光和非曝光区域。 可成像元件还具有设置在可成像层上的水溶性面漆。 在具有或不具有预热步骤的情况下,水溶性面漆至少部分地用水或水溶液除去,其不完全或不完全除去可成像层的未曝光区域。 然后将元件安装在印刷机中并与润版液,平版印刷油墨或润版液和平版印刷油墨的组合接触,从而在印刷开始时除去可成像层的未曝光区域 操作。