Imageable element and waterless printing plate
    2.
    发明授权
    Imageable element and waterless printing plate 失效
    可成像元件和无水印版

    公开(公告)号:US06555283B1

    公开(公告)日:2003-04-29

    申请号:US09589334

    申请日:2000-06-07

    IPC分类号: G03F7021

    摘要: 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.

    摘要翻译: 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。

    Polymerizable compounds with quadruple hydrogen bond forming groups
    3.
    发明授权
    Polymerizable compounds with quadruple hydrogen bond forming groups 失效
    具有四氢键形成基团的可聚合化合物

    公开(公告)号:US06899992B2

    公开(公告)日:2005-05-31

    申请号:US10290623

    申请日:2002-11-08

    摘要: QHB-Modified free radical polymerizable compounds and free radical polymerizable compositions that comprise these compounds are disclosed. A QBH-modified free radical polymerizable compound has at least one moiety that comprises at least one free radical polymerizable group; a supporting backbone, and at least one and preferably at least two moieties capable of forming four or more, typically four, hydrogen bonds with similar or complementary units on other molecules or portions of molecules. Free radical polymerizable compositions that contain these compounds may be used in any of the well-known applications for free radical polymerizable compositions. They are especially useful for the formation of imageable elements useful as lithographic printing plate precursors.

    摘要翻译: 公开了QHB改性的可自由基聚合的化合物和包含这些化合物的自由基可聚合组合物。 QBH改性的自由基聚合性化合物具有至少一个包含至少一个可自由基聚合基团的部分; 支链骨架,以及能与其他分子或分子部分上的相似或互补单元形成四个或更多,通常四个氢键的至少一个,优选至少两个部分。 含有这些化合物的自由基可聚合组合物可用于任何用于自由基可聚合组合物的众所周知的应用。 它们对于形成可用作平版印刷版前体的可成像元件特别有用。

    Imageable element and method of preparation thereof
    6.
    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 waterless lithographic printing plate
    7.
    发明授权
    Thermal waterless lithographic printing plate 失效
    无水平版印刷版

    公开(公告)号:US5919600A

    公开(公告)日:1999-07-06

    申请号:US128887

    申请日:1998-08-04

    摘要: A waterless or driographic printing plate which can be thermally imaged by an infrared laser is composed of a substrate; a thermal imaging layer containing a photothermal conversion material, such as an infrared absorbing material, and a thermoplastic polyurethane with pendent allyl groups; and a crosslinked silicone polymer top layer. It was discovered that when the imaging layer contains an allyl functional polyurethane mixed with an infrared absorbing dye or pigment, the polymeric layer will have enhanced solubility in certain solvents when exposed to infrared radiation. In addition, the polymeric layer continues to exhibit excellent adhesion to the silicone in unexposed areas so that the infrared absorbing layer can endure development with a suitable organic solvent, or a solvent mixture. Mild brushing or rubbing with the developing solvent readily removes laser-struck portions of the infrared imaging layer while unexposed areas remain firmly intact.

    摘要翻译: 可通过红外激光热成像的无水或流体印刷版由基板构成; 包含光热转换材料如红外吸收材料的热成像层和具有侧链烯丙基的热塑性聚氨酯; 和交联的硅氧烷聚合物顶层。 已经发现,当成像层含有与红外吸收染料或颜料混合的烯丙基官能聚氨酯时,当暴露于红外辐射时,聚合物层将在某些溶剂中具有增强的溶解度。 此外,聚合物层在未曝光区域中继续表现出对硅酮的优异粘合性,使得红外线吸收层可以用合适的有机溶剂或溶剂混合物持续显影。 用显影溶剂进行轻度刷涂或摩擦可以很容易地去除红外成像层的激光打击部分,而未曝光的区域保持牢固地完整。

    Radiation sensitive diazo sulfo-acrylic adducts and method for producing
a printing plate
    9.
    发明授权
    Radiation sensitive diazo sulfo-acrylic adducts and method for producing a printing plate 失效
    辐射敏感重氮磺基丙烯酸加合物及其印刷方法

    公开(公告)号:US5846685A

    公开(公告)日:1998-12-08

    申请号:US797675

    申请日:1997-01-31

    IPC分类号: G03F7/021 G03F7/095

    CPC分类号: G03F7/021

    摘要: A radiation sensitive composition containing an adduct of a diazonium resin having pendant diazonium groups, with a sulfonated acrylic copolymer having pendant sulfonate groups. The sulfonated acrylic copolymer contains an acrylic moiety and a sulfonated styryl or acrylic moiety. The copolymer may optionally contain styryl moieties. The composition is useful as a radiation sensitive layer in imaging elements for graphic arts applications and is particularly useful in preparing durable, long-wear, printing plates.

    摘要翻译: 一种辐射敏感性组合物,其含有具有侧面重氮基团的重氮化合物的加合物和具有磺酸根基侧基的磺化丙烯酸共聚物。 磺化丙烯酸共聚物含有丙烯酸部分和磺化苯乙烯基或丙烯酸部分。 共聚物可以任选地含有苯乙烯基部分。 该组合物可用作用于图形艺术应用的成像元件中的辐射敏感层,并且在制备耐用的长寿命印刷版中特别有用。

    Methods of processing using silicate-free developer compositions
    10.
    发明授权
    Methods of processing using silicate-free developer compositions 有权
    使用不含硅酸盐的显影剂组合物的处理方法

    公开(公告)号:US08939080B2

    公开(公告)日:2015-01-27

    申请号:US12948808

    申请日:2010-11-18

    摘要: A method is used to prepare lithographic printing plates by developing positive-working lithographic printing plate precursor that has a single imageable layer that comprises a polymer binder having recurring units represented by Structure (Ib) below: wherein the recurring units of Structure (Ib) are present in an amount of at least 25 and up to and including 60 mol %, all based on total recurring units in the polymer binder, and R2 is a substituted or unsubstituted hydroxyaryl group in which the hydroxyl group is ortho to the ester linkage, to form exposed and non-exposed regions in the imageable layer. The resulting imaged lithographic printing plate is developed using a silicate-free developer composition having a pH of at least 12 and comprising at least 0.001 gram-atom/kg of a metal cation M2+ selected from the group consisting of barium, calcium, strontium, and zinc cations.

    摘要翻译: 通过开发具有单个可成像层的正性平版印刷版原版来制备平版印刷版的方法,所述单一可成像层包含具有由以下结构(Ib)表示的重复单元的聚合物粘合剂:其中结构(Ib)的重复单元为 以聚合物粘合剂中的总重复单元计,至少25重量%,至多为60摩尔%,R2为取代或未取代的羟基芳基,其中羟基为酯键的邻位,至 在可成像层中形成曝光和非曝光区域。 使用不含硅酸盐的显影剂组合物显影所得成像的平版印刷版,所述显影剂组合物的pH至少为12,并且包含至少0.001克/千克金属阳离子M2 +,其选自钡,钙,锶和 锌阳离子。