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    • 8. 发明授权
    • Imageable element and waterless printing plate
    • 可成像元件和无水印版
    • US06555283B1
    • 2003-04-29
    • US09589334
    • 2000-06-07
    • Xing-Fu ZhongJianbing HuangS. Peter Pappas
    • Xing-Fu ZhongJianbing HuangS. Peter Pappas
    • G03F7021
    • B41C1/1016B41C2201/02B41C2201/14B41C2210/02B41C2210/04B41C2210/12B41C2210/14B41C2210/16B41C2210/22B41C2210/24B41M5/368G03F7/016G03F7/021G03F7/031G03F7/0752
    • This invention relates to an imageable element that can be imaged and developed to produce a printing plate. The imageable element comprises a substrate and a radiation-sensitive imageable composition applied to the substrate. The imageable composition comprises (a) a first layer having (i) a photosensitive composition which undergoes a decrease in solubility in developer upon absorption of actinic radiation and (ii) an inhibitor, and (b) a second layer comprising an ink-repellent polymeric material. In one embodiment, the inhibitor is activated by heat or radiation of longer wavelength than actinic radiation. Upon activation, the inhibitor retards the solubility decrease of the photosensitive composition upon absorption of actinic radiation. In another embodiment, the inhibitor initially retards the solubility decrease of the photosensitive composition upon absorption of actinic radiation. However, the inhibitor is deactivated by heat or radiation of longer wavelength than actinic radiation, and upon deactivation the inhibitor no longer retards the solubility decrease of the photosensitive composition.
    • 本发明涉及可成像和显影以产生印版的可成像元件。 可成像元件包括施加到基底的基底和辐射敏感可成像组合物。 可成像组合物包含(a)第一层,其具有(i)在吸收光化辐射时在显影剂中溶解度降低的光敏组合物和(ii)抑制剂,和(b)包含拒油聚合物 材料。 在一个实施方案中,抑制剂通过比光化辐射更长波长的热或辐射活化。 激活时,抑制剂在吸收光化辐射时阻碍光敏组合物的溶解度降低。 在另一个实施方案中,抑制剂最初延迟光敏组合物在吸收光化辐射时的溶解度降低。 然而,抑制剂通过比光化辐射更长波长的热或辐射而失活,并且在失活时,抑制剂不再延迟感光组合物的溶解度降低。