Thermal digital lithographic printing plate
    2.
    发明授权
    Thermal digital lithographic printing plate 有权
    热数码平版印刷版

    公开(公告)号:US06358669B1

    公开(公告)日:2002-03-19

    申请号:US09469489

    申请日:1999-12-22

    IPC分类号: G03F709

    摘要: A thermally imageable element, useful as a lithographic printing plate precursor is disclosed. The element comprises a hydrophilic substrate; an underlayer comprising a first polymeric material; and an ink-receptive top layer comprising a second polymeric material. Preferably, the top layer comprises a compound that functions as a solubility-suppressing component. The solubility-suppressing component may be a separate dissolution inhibitor compound and/or the second polymeric material may also function as a solubility-suppressing component. On thermal exposure the exposed regions of the top layer becomes more readily soluble in an aqueous developer, allowing the developer to remove the top layer and reveal the surface of the hydrophilic substrate. The lithographic printing plate thus formed has excellent properties, including the absence of sludging of the developer.

    摘要翻译: 公开了可用作平版印刷版原版的可热成像元件。 元件包括亲水基底; 包含第一聚合物材料的底层; 以及包含第二聚合物材料的吸墨顶层。 优选地,顶层包含用作溶解度抑制成分的化合物。 溶解性抑制成分可以是单独的溶解抑制剂化合物和/或第二聚合物材料也可以作为溶解度抑制成分起作用。 在热曝光的情况下,顶层的暴露区域变得更容易溶于水性显影剂,使显影剂除去顶层并露出亲水基材的表面。 这样形成的平版印刷版具有优异的性能,包括不存在显影剂的污泥。

    Imageable element and method of preparation thereof
    3.
    发明授权
    Imageable element and method of preparation thereof 失效
    可成像元件及其制备方法

    公开(公告)号:US06451505B1

    公开(公告)日:2002-09-17

    申请号:US09633029

    申请日:2000-08-04

    IPC分类号: G03G7004

    摘要: An imageable element comprises: (A) a substrate; and (B) an imageable composition applied to the substrate comprising: (1) a first layer, comprising: (a) a photosensitive composition capable of absorbing actinic radiation; and (b) a photothermal converter; and (2) an ablatable second layer contiguous to the first layer, wherein the second layer is opaque to the actinic radiation. This imageable element advantageously is useful in both positive and negative working printing plate applications, increases the efficiency of use of mask-generating radiation such as IR radiation and eliminates the need for chemicals and additional time to create a mask.

    摘要翻译: 可成像元件包括:(A)基材; 和(B)施加到基材上的可成像组合物,包括:(1)第一层,其包含:(a)能够吸收光化辐射的光敏组合物; 和(b)光热转换器; 和(2)与第一层邻接的可烧蚀的第二层,其中第二层对于光化辐射是不透明的。该可成像元件有利地用于正和负作业印刷板应用中,提高了掩模产生的使用效率 辐射如红外辐射,消除了化学品的需要和额外的时间来创建一个面具。

    Thermal digital lithographic printing plate
    4.
    发明授权
    Thermal digital lithographic printing plate 有权
    热数码平版印刷版

    公开(公告)号:US06534238B1

    公开(公告)日:2003-03-18

    申请号:US09592895

    申请日:2000-06-13

    IPC分类号: G03F7038

    摘要: A thermally imageable element, useful as a lithographic printing plate precursor is disclosed. The element comprises a hydrophilic substrate; an underlayer comprising a first polymeric material; and an ink-receptive top layer comprising a second polymeric material and a solubility-suppressing component. The solubility-suppressing component may be a separate dissolution inhibitor compound and/or the second polymeric material may also function as a solubility-suppressing component. On thermal exposure the exposed regions of the top layer becomes more readily soluble in an aqueous developer, allowing the developer to remove the top layer and reveal the surface of the hydrophilic substrate. The lithographic printing plate thus formed has excellent properties, including the absence of sludging of the developer.

    摘要翻译: 公开了可用作平版印刷版原版的可热成像元件。 元件包括亲水基底; 包含第一聚合物材料的底层; 以及包含第二聚合物材料和溶解度抑制组分的吸墨顶层。 溶解性抑制成分可以是单独的溶解抑制剂化合物和/或第二聚合物材料也可以作为溶解度抑制成分起作用。 在热曝光的情况下,顶层的暴露区域变得更容易溶于水性显影剂,使显影剂除去顶层并露出亲水基材的表面。 这样形成的平版印刷版具有优异的性能,包括不存在显影剂的污泥。

    Thermal digital lithographic printing plate
    7.
    发明授权
    Thermal digital lithographic printing plate 有权
    热数码平版印刷版

    公开(公告)号:US06352811B1

    公开(公告)日:2002-03-05

    申请号:US09469490

    申请日:1999-12-22

    IPC分类号: G03F709

    摘要: A thermal lithographic printing plate, which can be imaged by thermal energy typically by imagewise exposure with an infrared emitting laser, a thermal printing head, etc., is made up of a hydrophilic substrate, and a composite layer structure composed of two layer coatings. Preferably, the first layer of the composite is composed of an aqueous developable polymer mixture containing a solubility inhibiting material and a photothermal conversion material which is contiguous to the hydrophilic substrate. The second layer of the composite is insoluble in the aqueous solution, is ink receptive, and is composed of one or more non-aqueous soluble polymers which are soluble or dispersible in a solvent which does not dissolve the first layer. The plate is exposed with an infrared laser or a thermal print head, and upon aqueous development of the imaged plate, the exposed portions are removed exposing hydrophilic substrate surfaces receptive to conventional aqueous fountain solutions. The unexposed portions contain the ink-receptive image areas. The second layer may also contain a photothermal conversion material. Alternatively, the composite layer may be free of photothermal conversion material when thermal imaging is carried out using a thermal printing head.

    摘要翻译: 可以通过热能成像通过用红外发射激光成像曝光,热打印头等来成像的热平版印刷版由亲水基材和由两层涂层组成的复合层结构构成。 优选地,复合材料的第一层由含有可溶解性抑制材料和与亲水基底邻接的光热转换材料的水性可显影聚合物混合物组成。 复合材料的第二层不溶于水溶液,是油墨接受的,并且由一种或多种可溶于或不溶于不溶于第一层的溶剂中的非水溶性聚合物组成。 该板用红外激光或热打印头曝光,并且在成像板的水性显影时,去除曝光部分,暴露接受常规水性喷泉溶液的亲水底物表面。 未曝光部分包含吸墨图像区域。 第二层也可以含有光热转换材料。 或者,当使用热敏打印头进行热成像时,复合层可以不含光热转换材料。