Planographic printing plate precursor
    391.
    发明申请
    Planographic printing plate precursor 失效
    平版印刷版前体

    公开(公告)号:US20030157434A1

    公开(公告)日:2003-08-21

    申请号:US10179390

    申请日:2002-06-26

    Abstract: A positive planographic printing plate precursor includes a support having disposed thereon a lower thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound and an upper thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound, with alkali-solubility increasing under heat, wherein (i) both the upper thermosensitive layer and the lower thermosensitive layer contain an IR absorbing dye, with the ratio of the IR absorbing dye concentration in the upper thermosensitive layer to the IR absorbing dye concentration in the lower thermosensitive layer is 1.6 to 10.0, and/or (ii) the upper thermosensitive layer and the lower thermosensitive layer contain different IR absorbing dyes, and/or (iii) at least one of the upper thermosensitive layer and the lower thermosensitive layer contains an IR absorbent having, in one molecule, at least two chromophoric groups that absorb IR light, with the chromophoric groups bonding to each other via a covalent bond.

    Abstract translation: 正型平版印刷版前体包括其上设置有含有不溶于水但碱溶性聚合物化合物的下部热敏层和含有不溶于水但不溶于碱的高分子化合物的上部热敏层的载体,碱溶解度增加在 热,其中(i)上部热敏层和下部热敏层都含有IR吸收染料,上部热敏层中的IR吸收染料浓度与下部热敏层中的IR吸收染料浓度之比为1.6〜 10.0,和/或(ii)上部热敏层和下部热敏层含有不同的IR吸收染料,和/或(iii)上部热敏层和下部热敏层中的至少一个含有一种IR吸收剂, 分子,至少两个吸收IR光的发色团,发色团通过a相互键合 共价键。

    Method for making a printing plate and printing plate
    393.
    发明申请
    Method for making a printing plate and printing plate 失效
    印版和印版的制作方法

    公开(公告)号:US20020108519A1

    公开(公告)日:2002-08-15

    申请号:US09783776

    申请日:2001-02-15

    Abstract: A method of producing a printing plate comprises: (a) providing a printing plate precursor comprising a topmost etchable first layer and a second layer located below the first layer, wherein the first and second layers have different affinities for at least one printing liquid; (b) imagewise providing atomized fluid particles in an interaction zone located above the surface of the first layer; and (c) imagewise directing laser energy into the interaction zone, wherein the laser energy has a wavelength which is substantially absorbed by the atomized fluid particles in the interaction zone, and the absorption of the laser energy causes the atomized fluid particles to imagewise impart kinetic energy to and etch the first layer. Lithographic and flexographic printing plates may be prepared according to this method, including waterless plates, negative-and positive-working plates, and processless plates.

    Abstract translation: 制造印版的方法包括:(a)提供包含最顶层可蚀刻第一层和位于第一层下方的第二层的印版前体,其中第一和第二层对至少一种印刷液具有不同的亲和力; (b)在位于第一层表面上方的相互作用区域中成像提供雾化流体颗粒; 并且(c)将激光能量成像地引导到相互作用区域中,其中激光能量具有被相互作用区域中的雾化流体颗粒基本吸收的波长,并且激光能量的吸收导致雾化的流体颗粒成像赋予动力学 能量和蚀刻第一层。 可以根据这种方法制备平版印刷版和柔版印刷版,包括无水版,负片和正片,以及无处理版。

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