LITHOGRAPHIC PRINTING PLATE PRECURSORS AND USE

    公开(公告)号:US20140242517A1

    公开(公告)日:2014-08-28

    申请号:US13779906

    申请日:2013-02-28

    IPC分类号: G03F7/09

    摘要: Negative-working lithographic printing plate precursor a negative-working imageable layer and an outermost water-soluble overcoat layer that is disposed directly on the negative-working imageable layer. The outermost water-soluble overcoat layer comprises: (1) one or more film-forming water-soluble polymeric binders, (2) organic wax particles, and (3) non-wax matte particles. The outermost water-soluble overcoat layer has a dry thickness (t) that is defined by the following equation (I): t=w/r wherein w is the dry coverage of the outermost water-soluble overcoat layer in g/m2, and r is 1 g/cm3. The organic wax particles have an average largest dimension D(wax) that is less than 0.9 of t (in μm), and the non-wax matte particles have an average largest dimension D(matte) that defined by the following equation (II): 1.5 times t≦D(matte)≦40 times t (in μm).

    摘要翻译: 负性工作平版印刷版前体是负性可成像层和最外层的水溶性外涂层,其直接设置在负性可成像层上。 最外面的水溶性外涂层包括:(1)一种或多种成膜水溶性聚合物粘合剂,(2)有机蜡颗粒和(3)非蜡无光泽颗粒。 最外面的水溶性外涂层具有由下式(I)定义的干燥厚度(t):t = w / r其中w是最外层水溶性外涂层的干覆盖率,单位为g / m 2,以及 r为1g / cm3。 有机蜡颗粒具有小于0.9的t(μm)的平均最大尺寸D(蜡),并且非蜡哑光颗粒具有由下列等式(II)定义的平均最大尺寸D(无光泽度) :1.5倍t≦̸ D(无光泽)≦̸ 40倍t(μm)。

    PROCESSING OF LITHOGRAPHIC PRINTING PLATES WITH HYDROPHILIC POLYMER IN FINISHER SOLUTION
    17.
    发明申请
    PROCESSING OF LITHOGRAPHIC PRINTING PLATES WITH HYDROPHILIC POLYMER IN FINISHER SOLUTION 审中-公开
    在完成溶液中加工具有疏水性聚合物的平版印刷板

    公开(公告)号:US20110155009A1

    公开(公告)日:2011-06-30

    申请号:US12742459

    申请日:2008-11-19

    IPC分类号: B41N1/14 B41N3/00

    CPC分类号: B41N3/08 G03F7/40

    摘要: Process for the production of a lithographic printing plate, comprising (a) providing a lithographic printing plate precursor comprising (i) a substrate; (ii) a radiation-sensitive coating comprising one or more layers and (iii) optionally an oxygen-impermeable overcoat; (b) image-wise exposing the lithographic printing plate precursor to radiation of a wavelength to which the radiation-sensitive coating is sensitive; (c) optionally subjecting the image-wise exposed precursor to a preheat treatment and/or rinsing with water; (d) removing the non-image areas from the image-wise exposed precursor by means of an alkaline developer solution; (e) optionally subjecting the imaged precursor obtained in step (d) to rinsing with water; (f) treating the imaged lithographic printing plate obtained in step (d) or (e) with a finisher solution; and (g) optionally subjecting the finisher treated plate obtained in step (f) to at least one further process step selected from rinsing with water, drying and baking; characterized in that the finisher solution comprises 0.01 to 15 wt. %, based on the total weight of the finisher, of a hydrophilic polymer comprising: (m1) primary, secondary and/or tertiary amino groups, and (m2) acid groups selected from —COOH, —SO3H, —PO2H2 and PO3H2, and (m3) optionally alkylene oxide units —(CHR1—CH2—O)P—, wherein each R1 independently represents H or —CH3 and p is an integer from 1 to 50.

    摘要翻译: 制备平版印刷版的方法,包括(a)提供平版印刷版原版,其包含(i)基底; (ii)包含一层或多层的辐射敏感涂层和(iii)任选的不透氧外涂层; (b)将平版印刷版前体成像曝光于对辐射敏感涂层敏感的波长的辐射; (c)任选地使成像曝光的前体经受预热处理和/或用水冲洗; (d)通过碱性显影剂溶液从图像曝光的前体中除去非图像区域; (e)任选地使步骤(d)中获得的成像前体用水冲洗; (f)用整理剂溶液处理步骤(d)或(e)中获得的成像平版印刷版; 和(g)任选地将步骤(f)中获得的整理剂处理的板处理至少一个选自用水冲洗,干燥和烘烤的其它工艺步骤; 其特征在于整理剂溶液含有0.01至15wt。 (m1)伯,仲和/或叔氨基和(m2)选自-COOH,-SO 3 H,-P 2 H 2和PO 3 H 2的酸基的亲水性聚合物,以及 (m3)任选的环氧烷单元 - (CHR1-CH2-O)P-,其中每个R1独立地表示H或-CH3,p是1至50的整数。

    NEGATIVE-WORKING IMAGING ELEMENTS AND METHODS OF USE
    19.
    发明申请
    NEGATIVE-WORKING IMAGING ELEMENTS AND METHODS OF USE 失效
    负面工作成像元素和使用方法

    公开(公告)号:US20100015556A1

    公开(公告)日:2010-01-21

    申请号:US12173220

    申请日:2008-07-15

    IPC分类号: G03F7/26 B41N1/00

    摘要: Negative-working imageable elements such as lithographic printing plate precursors, include a free-radically polymerizable component, an initiator composition that is capable of generating free radicals sufficient to initiate polymerization of the free-radically polymerizable component upon exposure to imaging radiation in the presence of a radiation absorbing compound, a radiation absorbing compound, an aerobic free radical inhibitor, optionally a polymeric binder that is not a free radically polymerizable component, and an anaerobic free radical inhibitor. The molar ratio of the anaerobic free radical inhibitor to the aerobic free radical inhibitor is at least 1:1. This combination of inhibitors provides increased shelf life and good latent image stability particularly when the element includes a polymeric topcoat layer that functions as an oxygen barrier.

    摘要翻译: 负面工作的可成像元件如平版印刷版前体包括可自由基聚合的组分,引发剂组合物,其能够产生足够的自由基,以便在存在可见光辐射的情况下暴露于成像辐射时引发可自由基聚合的组分的聚合 辐射吸收化合物,辐射吸收化合物,需氧自由基抑制剂,任选的不是可自由基自由基组分的聚合物粘合剂和厌氧自由基抑制剂。 厌氧自由基抑制剂与好氧自由基抑制剂的摩尔比至少为1:1。 这种抑制剂的组合提供了增加的保质期和良好的潜影稳定性,特别是当元件包括用作氧阻隔层的聚合物顶涂层时。