Methods of processing using silicate-free developer compositions
    1.
    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。

    Method of developing a lithographic printing plate including post heating
    3.
    发明授权
    Method of developing a lithographic printing plate including post heating 失效
    包括后加热的平版印刷版的开发方法

    公开(公告)号:US08785109B2

    公开(公告)日:2014-07-22

    申请号:US13413280

    申请日:2012-03-06

    摘要: A method for producing a printable lithographic plate from a negative working, radiation imageable plate having an oleophilic resin coating that reacts to radiation by cross linking and is non-ionically adhered to a hydrophilic substrate. Steps include imagewise radiation exposing the coating to produce an imaged plate having partially reacted image areas including unreacted coating material, and completely unreacted nonimage areas; developing the plate by removing only the unreacted, nonimage areas from the substrate while retaining unreacted material in the image areas; and blanket exposing the developed plate with a source of energy which further reacts the retained unreacted material in the image areas. A plate with a coating containing resin particles can be imaged to produce initial cross-linking, then mechanically developed. Hardening of the imaged areas is completed with a relatively intense post-heating at 160 deg. C., which further cross links the monomer and fuses the resin particles.

    摘要翻译: 一种由具有亲油性树脂涂层的负性可辐射成像板制造可印版光刻板的方法,其通过交联反应并与非亲离性底物非离子地粘合。 步骤包括成像辐射暴露涂层以产生具有部分反应的图像区域(包括未反应的涂层材料)和完全未反应的非图像区域的成像板; 通过从衬底中仅去除未反应的非图像区域同时将未反应的材料保留在图像区域中来显影板; 并用能量源将显影的板材毯毯曝光,这进一步使图像区域中保留的未反应材料发生反应。 可以对含有树脂颗粒的涂层的板进行成像以产生初始交联,然后机械显影。 成像区域的硬化在160度后相对强烈的后加热完成。 C.进一步交联单体并熔化树脂颗粒。

    Negative-working imaging elements and methods of use
    5.
    发明授权
    Negative-working imaging elements and methods of use 失效
    负面影像元素和使用方法

    公开(公告)号:US08354216B2

    公开(公告)日:2013-01-15

    申请号:US12173220

    申请日:2008-07-15

    IPC分类号: B41F7/00 G03F7/00

    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。

    LITHOGRAPHIC PRINTING PLATE PRECURSOR AND PLATE MAKING METHOD THEREOF
    6.
    发明申请
    LITHOGRAPHIC PRINTING PLATE PRECURSOR AND PLATE MAKING METHOD THEREOF 有权
    平版印刷机前驱板及其制版方法

    公开(公告)号:US20120219911A1

    公开(公告)日:2012-08-30

    申请号:US13406095

    申请日:2012-02-27

    IPC分类号: G03F7/20 G03F7/004

    摘要: A lithographic printing plate precursor includes, in the following order: a support; an image-recording layer which is capable of forming an image by removing an unexposed area of the image-recording layer with at least one of printing ink and dampening water on a printing machine after exposure and contains an infrared absorbing dye, a polymerization initiator, a polymerizable compound and a binder polymer having an alkylene oxide group; and a protective layer containing a hydrophilic polymer which contains at least a repeating unit represented by the formula (1) as defined herein, a repeating unit represented by the formula (2) as defined herein, and a repeating unit represented by the formula (4) as defined herein, and in which a content of the repeating unit represented by the formula (4) is from 0.3 to 5.0% by mole based on total repeating units of the hydrophilic polymer.

    摘要翻译: 平版印刷版原版按以下顺序包括:载体; 图像记录层,其能够通过在曝光后在印刷机上用印刷油墨和润版水中的至少一种去除图像记录层的未曝光区域而形成图像,并且包含红外吸收染料,聚合引发剂, 可聚合化合物和具有烯化氧基团的粘合剂聚合物; 和含有至少含有如本文定义的式(1)表示的重复单元的亲水性聚合物的保护层,由本文定义的式(2)表示的重复单元和由式(4)表示的重复单元 ),其中由式(4)表示的重复单元的含量相对于亲水性聚合物的总重复单元为0.3〜5.0摩尔%。

    LITHOGRAPHIC PRINTING PLATE
    9.
    发明申请
    LITHOGRAPHIC PRINTING PLATE 审中-公开
    立体印刷板

    公开(公告)号:US20110315034A1

    公开(公告)日:2011-12-29

    申请号:US13122716

    申请日:2009-10-21

    IPC分类号: B41N3/08 G03F7/20 G03F7/032

    摘要: A lithographic printing plate precursor is provided which comprises an aluminum support having a hydrophilic surface and a coating provided thereon, said coating comprising a photopolymerisable composition having a polymerisable compound, a pigment dispersed with a dispersant, a polymerization initiator and a binder, characterized in that the dispersant is a compound free of —COOH, —PO3H2 or —OPO3H2 groups, and the polymerization initiator is a trihalomethyl-aryl sulphone wherein the aryl group is substituted by at least one electron-donating group and wherein the sum of the Hammett constants (sigma) of the substituting groups on said aryl group has a negative value. The printing plate precursor exhibits an excellent daylight stability and shelf-life.

    摘要翻译: 提供了一种平版印刷版原版,其包括具有亲水表面的铝载体和其上提供的涂层,所述涂层包含具有可聚合化合物的可光聚合组合物,分散有分散剂的颜料,聚合引发剂和粘合剂,其特征在于 分散剂是不含-COOH,-PO3H2或-OPO3H2基团的化合物,聚合引发剂是三卤代甲基 - 芳基砜,其中芳基被至少一个给电子基团取代,其中哈米特常数 西格玛)的所述芳基上的取代基具有负值。 印版前体表现出优异的日光稳定性和保质期。