Flexographic element having an integral thermally bleachable mask layer
    91.
    发明授权
    Flexographic element having an integral thermally bleachable mask layer 失效
    柔版印刷元件具有整体的可热漂白掩模层

    公开(公告)号:US06893796B2

    公开(公告)日:2005-05-17

    申请号:US10223937

    申请日:2002-08-20

    Applicant: Kevin B. Ray

    Inventor: Kevin B. Ray

    CPC classification number: G03F7/202

    Abstract: An imageable element useful as a flexographic printing plate precursor is disclosed. The element is made up of a flexible substrate; a photosensitive layer, which contains a negative working photosensitive composition; an optional barrier layer; and a masking layer. The masking layer is thermally bleachable, comprises a dye that typically has an absorption maximum between about 250 nm and about 600 nm, more typically between about 300 nm and about 500 nm, and is substantially free of photothermal conversion materials.

    Abstract translation: 公开了可用作柔性版印刷版前体的成像元件。 该元件由柔性基板构成; 感光层,其含有负性感光性组合物; 可选的屏障层; 和掩模层。 掩模层是可热漂白的,包括通常在约250nm和约600nm之间的吸收最大值,更典型地在约300nm至约500nm之间的染料,并且基本上不含光热转换材料。

    Process for making a two layer thermal negative plate
    95.
    发明申请
    Process for making a two layer thermal negative plate 失效
    制造双层热负极板的工艺

    公开(公告)号:US20030118949A1

    公开(公告)日:2003-06-26

    申请号:US10016173

    申请日:2001-12-13

    Abstract: A negative-working image forming process which comprises the steps of: (1) flood exposing with actinic radiation a photosensitive assembly that comprises: (a) a hydrophilic support which can be used as a lithographic base and having thereon; (b) a first layer comprising: (i) at least one polymer that is soluble or dispersible in an aqueous alkaline solution; (c) a second layer on top of the first layer, the second layer comprising at least one o-quinonediazide compound; whereby the flood exposure causes the at least one o-quinonediazide compound to be converted to the corresponding indenecarboxylic acid compound; and (d) at least one photothermal conversion material in either the first layer or the second layer or both; (2) imagewise exposing the flood exposed photosensitive assembly with infrared radiation to thereby convert the indenecarboxylic acid compound in the second layer in the imagewise exposed areas to the corresponding indene compound; and (3) developing the imagewise exposed photosensitive assembly with an alkaline developing solution to dissolve out the imagewise unexposed areas of the second layer and the areas of the first layer underlying the imagewise unexposed areas of the second layer and thereby produce a negative working image.

    Abstract translation: 一种负型图像形成方法,其包括以下步骤:(1)用光化辐射曝光光敏组件,其包含:(a)可用作平版印刷基底并具有其上的亲水载体; (b)第一层,其包含:(i)至少一种可溶于或可分散在碱性水溶液中的聚合物; (c)在第一层顶部的第二层,第二层包含至少一种邻醌二叠氮化合物; 由此泛滥暴露导致至少一种邻醌二叠氮化合物转化为相应的茚羧酸化合物; 和(d)在第一层或第二层或两者中的至少一种光热转换材料; (2)用红外辐射成像地暴露暴露的感光组件,从而将图像曝光区域中的第二层中的茚酸羧酸化合物转化成相应的茚化合物; 和(3)用碱性显影液显影图像曝光的感光组件,以溶解第二层的成像未曝光区域和第二层的成像未曝光区域下方的第一层的区域,从而产生负作用图像。

    Polymeric compounds
    98.
    发明申请
    Polymeric compounds 失效
    聚合物

    公开(公告)号:US20010019809A1

    公开(公告)日:2001-09-06

    申请号:US09726347

    申请日:2000-12-01

    Abstract: Polymeric compounds for lithographic printing plates, especially plates for use in printing utilizing UV curable inks, may include a structural unit (I) 1 wherein R1 represents an optionally-substituted cyclic or alkyl group, x represents 0 or 1 and A represents an optionally-substituted alkylene group. A range of compounds having different solubilities in selected solvents may be prepared by varying the identity or group R1. Such components may be prepared by reacting an amine of formula R1NH2 with the maleic anhydride derivative corresponding to moiety 1.

    Abstract translation: 用于平版印刷版的聚合化合物,特别是用于使用UV固化油墨印刷的印版,可包括结构单元(I),其中R 1表示任选取代的环状或烷基,x表示0或1,A表示任选取代的 亚烷基。 在选择的溶剂中具有不同溶解度的一系列化合物可以通过改变同一性或基团R1来制备。 这样的组分可以通过使式R 1 NH 2的胺与对应于部分1的马来酸酐衍生物反应来制备。

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