Developing system for alkaline-developable lithographic printing plates
    11.
    发明授权
    Developing system for alkaline-developable lithographic printing plates 有权
    碱性显影平版印刷版的开发系统

    公开(公告)号:US6143479A

    公开(公告)日:2000-11-07

    申请号:US449072

    申请日:1999-11-24

    IPC分类号: G03F7/32

    CPC分类号: G03F7/322

    摘要: An aqueous alkaline composition comprising at least one phosphonic acid, at least one polyglycol derivative and at least one glycol. The composition can be used as either a developer or a replenisher for either positive-working or negative-working alkaline developable lithographic printing plates, including thermal plates.

    摘要翻译: 一种包含至少一种膦酸,至少一种聚乙二醇衍生物和至少一种二醇的含水碱性组合物。 该组合物可用作用于正性或负性碱性可显影平版印刷版(包括热敏板)的显影剂或补充剂。

    Method for reuse of loaded developer
    13.
    发明授权
    Method for reuse of loaded developer 失效
    加载显影剂重用方法

    公开(公告)号:US06759185B2

    公开(公告)日:2004-07-06

    申请号:US09992688

    申请日:2001-11-14

    IPC分类号: G03C531

    CPC分类号: G03F7/3092

    摘要: A method for the refreshment and reuse of loaded developers used in lithographic printing is disclosed. A polyoxyalkylene derivative is added to a silicate-containing loaded developer. Insoluble material is separated and the alkalinity level of the resulting essentially colorless liquid adjusted to produce a refreshed developer. The refreshed developer may be used to develop additional exposed imageable elements.

    摘要翻译: 公开了一种用于平版印刷中使用的加载显影剂的刷新和再利用的方法。 将聚氧化烯衍生物加入到含硅酸盐的负载显影剂中。 分离不溶物,调节所得到的基本无色液体的碱度水平以产生刷新的显影剂。 刷新的显影剂可用于开发额外的可曝光可成像元件。

    Thermal lithographic printing plates
    16.
    发明授权
    Thermal lithographic printing plates 失效
    热平版印刷版

    公开(公告)号:US6060217A

    公开(公告)日:2000-05-09

    申请号:US922190

    申请日:1997-09-02

    IPC分类号: B41C1/10 B41M5/36 G03F7/30

    摘要: A method for directly imaging a lithographic printing surface using infrared radiation without the requirement of pre- or post-UV-light exposure, or heat treatment employs a printing plate which contains a support with a hydrophilic surface overcoated with an imaging layer. The imaging layer contains at least one polymer having bonded pendent groups which are hydroxy, carboxylic acid, tert-butyl-oxycarbonyl, sulfonamide, amide, nitrile, urea, or combinations thereof; as well as an infrared absorbing compound. The imaging layer may contain a second polymer which has bonded pendent groups which are 1,2-napthoquinone diazide, hydroxy, carboxylic acid, sulfonamide, hydroxymethyl amide, alkoxymethyl amide, nitrile, maleimide, urea, or combinations thereof. The imaging layer may also contain a visible absorption dye, a solubility inhibiting agent, or both. In practice, the imaging layer is imagewise exposed to infrared radiation to produce exposed image areas in the imaged layer which have transient solubility in aqueous alkaline developing solution, so that solubility is gradually lost over a period of time until the imaged areas become as insoluble as non-imaged areas. Within a short time period of the imaging exposure, the imaged layer is developed with an aqueous alkaline developing solution to form the lithographic printing surface. In this method, the infrared radiation preferably is laser radiation which is digitally controlled.

    摘要翻译: 使用红外线辐射直接对平版印刷表面进行成像的方法,而不需要进行紫外线照射之前或之后的曝光或热处理,使用包含具有用成像层涂覆的亲水表面的载体的印刷版。 成像层含有至少一种具有键合的侧基的聚合物,其为羟基,羧酸,叔丁基 - 氧羰基,磺酰胺,酰胺,腈,脲或其组合; 以及红外线吸收剂。 成像层可以含有具有键合的侧基的第二聚合物,其为1,2-萘醌二叠氮,羟基,羧酸,磺酰胺,羟甲基酰胺,烷氧基甲基酰胺,腈,马来酰亚胺,脲或其组合。 成像层还可以含有可见吸收染料,溶解性抑制剂,或两者。 在实践中,成像层被成像地暴露于红外辐射,以在成像层中产生在含水碱性显影液中具有瞬时溶解度的曝光图像区域,使得溶解度在一段时间内逐渐丧失,直到成像区域变得不溶于 非成像区域。 在成像曝光的短时间内,用含水碱性显影液显影成像层以形成平版印刷表面。 在该方法中,红外辐射优选为数字控制的激光辐射。

    Thermal digital lithographic printing plate
    19.
    发明授权
    Thermal digital lithographic printing plate 有权
    热数码平版印刷版

    公开(公告)号:US06352812B1

    公开(公告)日:2002-03-05

    申请号:US09301866

    申请日:1999-04-29

    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 photothermal conversion material which is contiguous to the hydrophilic substrate. The second layer of the composite 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包含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。

    Visible radiation sensitive composition and recording material
producible therefrom
    20.
    发明授权
    Visible radiation sensitive composition and recording material producible therefrom 失效
    可见的辐射敏感组合物和可从其生产的记录材料

    公开(公告)号:US6051366A

    公开(公告)日:2000-04-18

    申请号:US450968

    申请日:1995-05-25

    IPC分类号: G03F7/029

    摘要: A visible radiation sensitive composition is described which comprises a binder, one or more polymerizable compounds containing at least one polymerizable group, and one or more dyes having an absorption range in the emission range of the radiation source, characterized in that said composition comprises as an initiator an initiator system consisting of a metallocene as a photoinitiator and an onium compound as a coinitiator. The visible radiation sensitive composition shows an increased radiation sensitivity compared to the known radiation sensitive compositions and is especially suitable for recording materials such as printing plates, which can, in particular, also be exposed by means of laser radiation in the visible range.

    摘要翻译: 描述了一种可见的辐射敏感组合物,其包含粘合剂,含有至少一个可聚合基团的一种或多种可聚合化合物和一种或多种在辐射源的发射范围内具有吸收范围的染料,其特征在于所述组合物包含作为 引发剂由作为光引发剂的茂金属和作为共引发剂的鎓化合物组成的引发剂体系。 可见的辐射敏感组合物显示与已知的辐射敏感组合物相比增加的辐射敏感性,并且特别适用于记录诸如印刷板的材料,其特别是也可以通过在可见光范围内的激光辐射曝光。