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    • 6. 发明授权
    • Negative laser sensitive lithographic printing plate having specific photosensitive composition
    • 具有特定光敏组合物的负激光平版印刷版
    • US07524615B2
    • 2009-04-28
    • US11651319
    • 2007-01-09
    • Gary Ganghui Teng
    • Gary Ganghui Teng
    • G03C5/18G03F7/00
    • G03F7/027
    • High speed violet or ultraviolet laser sensitive lithographic printing plate comprising on a hydrophilic substrate a specific photosensitive composition is described. The photosensitive layer comprises an alkaline soluble polymeric binder, a multifunctional (meth)acrylate monomer, a free-radical initiator, and a sensitizing dye. The plate is imagewise exposed with a violet or ultraviolet laser at a dosage of less than 300 μJ/cm2, and then developed with an aqueous alkaline developer. Higher monomer to polymer weight ratio is advantageously used. A pigment is preferably incorporated into the photosensitive coating solution as a liquid dispersion. The exposed plate is preferably developed on a processor with an alkaline developer coupled with a replenisher having higher pH.
    • 描述了在亲水基底上包含特定光敏组合物的高速紫色或紫外线激光平版印刷版。 感光层包含碱溶性聚合物粘合剂,多官能(甲基)丙烯酸酯单体,自由基引发剂和增感染料。 用紫外线或紫外线激光以小于300μJ/ cm 2的剂量对板进行成像曝光,然后用碱性显影剂水溶液显影。 有利地使用更高的单体与聚合物的重量比。 优选将颜料作为液体分散体引入感光性涂布液中。 曝光的板优选在具有与具有较高pH的补充剂偶联的碱性显影剂的处理器上显影。
    • 8. 发明申请
    • Developing method for laser sensitive lithographic printing plate
    • 激光平版印刷版的开发方法
    • US20080176171A1
    • 2008-07-24
    • US11873349
    • 2007-10-16
    • Gary Ganghui Teng
    • Gary Ganghui Teng
    • G03F7/12
    • G03F7/40G03F7/30
    • A method of developing a laser sensitive lithographic printing plate is described. The plate comprises on a substrate a photosensitive layer soluble or dispersible in ink and/or fountain solution and capable of hardening upon exposure to a laser. The plate is exposed with a laser and deactivated under a safe light or in the dark, and then on-press developed with ink and/or fountain solution preferably under white light. Alternatively, the plate is developed off press with ink and/or fountain solution, or with an organic solvent-based or oil-based liquid or paste and/or an aqueous solution, and then mounted on press for lithographic printing.
    • 描述了一种开发激光平版印刷版的方法。 该板在基材上包含可溶于或可分散在油墨和/或润版液中的感光层,并且能够在暴露于激光时硬化。 板用激光曝光并在安全的光线或黑暗中停用,然后最好在白光下用油墨和/或润版液进行压制显影。 或者,将板用油墨和/或润版液,或与有机溶剂基或油基液体或糊状物和/或水溶液一起冲压,然后安装在压制机上用于平版印刷。