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    • 56. 发明申请
    • MANUFACTURE OF LITHOGRAPHIC PRINTING PLATE PRECURSORS FOR ABLATION IMAGING
    • 用于图像成像的平版印刷机前驱板的制造
    • US20140065407A1
    • 2014-03-06
    • US13597395
    • 2012-08-29
    • Moshe NakashDaniel Welzman
    • Moshe NakashDaniel Welzman
    • B41L17/00B32B3/26B29C59/16
    • B32B27/32B32B15/082B32B15/20B32B27/08B32B27/306B32B2307/4026B32B2307/728B41C1/1016B41C2201/04B41C2201/14B41C2210/02B41C2210/24Y10T428/24998
    • Positive-working lithographic printing plate precursors comprise a substrate surface having an average oxide pore diameter of 15 to 80 nm. On this, a crosslinked hydrophilic inner layer is formed using a formulation comprising: (1) a hydrophilic polymer having recurring —CH2—CH(OH)— units, (2) a crosslinking agent for these units having at least two aldehyde groups, and (3) an acidic compound. An oleophilic outer layer formulation comprises: (a) an infrared radiation absorber, and (b) an oleophilic polymer having at least 10 mol % randomly recurring —CH2—CH(OH)— units, within an organic solvent solution, and dried to form a composite structure. The composite structure is heated so its surface exhibits less than 10% optical density change within a first rectangular area (width W1 and length L1) centered inside a second rectangular area (width W2 and length L2), where the surface is subjected to 1000 rubs according to ASTM D3181 using the organic solvent solution.
    • 正性平版印刷版前体包括平均氧化物孔径为15〜80nm的基材表面。 在此,使用以下配方形成交联的亲水性内层,该制剂包含:(1)具有重复的-CH 2 -CH(OH) - 单元的亲水性聚合物,(2)具有至少两个醛基的这些单元的交联剂,以及 (3)酸性化合物。 亲油外层制剂包含:(a)红外辐射吸收剂和(b)在有机溶剂溶液中具有至少10摩尔%随机重复的-CH 2 -CH(OH) - 单元的亲油聚合物,并干燥形成 复合结构。 复合结构被加热,使得其表面在第二矩形区域(宽度W2和长度L2)内居中的第一矩形区域(宽度W1和长度L1)内表现出小于10%的光密度变化,其中表面经受1000次摩擦 根据ASTM D3181使用有机溶剂溶液。