Processing of positive-working lithographic printing plate precursor
    461.
    发明授权
    Processing of positive-working lithographic printing plate precursor 有权
    正性平版印刷版前体的加工

    公开(公告)号:US08187792B2

    公开(公告)日:2012-05-29

    申请号:US12195468

    申请日:2008-08-21

    Abstract: Positive-working imageable elements can be imaged and processed using a processing solution that comprises at least 0.03 N of an organic amine or a mixture thereof, whose conjugated acids have a pKa greater than 9 and a boiling point greater than 150° C. The imageable element is a single-layer, infrared radiation-sensitive positive-working imageable element comprising a substrate and an infrared radiation absorbing compound. It also has an imageable layer that comprises a developability-enhancing compound and a poly(vinyl acetal) in which at least 25 mol % of its recurring units comprise pendant phenol, naphthol, or anthracenol groups that are substituted with one or more electron-withdrawing groups.

    Abstract translation: 可以使用包含至少0.03N的共轭酸的pKa大于9且沸点大于150℃的有机胺或其混合物的处理溶液成像和处理正性可成像元件。可成像的 元件是包括基底和红外辐射吸收化合物的单层红外辐射敏感的正性可成像元件。 它还具有可成像层,其包含显影性增强化合物和聚(乙烯醇缩醛),其中至少25摩尔%的其重复单元包括被一个或多个吸电子取代的侧苯酚,萘酚或蒽代醇基 团体

    Method of making a photopolymer printing plate
    469.
    发明授权
    Method of making a photopolymer printing plate 有权
    制备光聚合物印版的方法

    公开(公告)号:US08088559B2

    公开(公告)日:2012-01-03

    申请号:US12093473

    申请日:2006-11-17

    Abstract: A method of making a lithographic printing plate includes the steps of: a) providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (ii) a coating on the support including a photopolymerizable layer, and, optionally, an intermediate layer between the photopolymerizable layer and the support, wherein the photopolymerizable layer includes a polymerizable compound and a polymerization initiator, b) image-wise exposing the coating in a plate setter, c) optionally, heating the precursor in a pre-heating unit, d) developing the precursor off-press in a gumming unit by treating the coating of the precursor with a gum solution, thereby removing the non-exposed areas of the photopolymerizable layer from the support, wherein the photopolymerizable layer further includes a polymer containing an acid group and a basic nitrogen-containing compound capable of neutralizing the acid group, or wherein the photopolymerizable layer further includes a polymer containing an acid group which is neutralized by a basic nitrogen-containing compound.

    Abstract translation: 制备平版印刷版的方法包括以下步骤:a)提供平版印刷版前体,其包括(i)具有亲水性表面的或具有亲水层的载体,(ii)载体上的涂层,包括 光聚合层和可选择地在可光聚合层和载体之间的中间层,其中可光聚合层包括可聚合化合物和聚合引发剂,b)成像曝光在印版机中的涂层,c)任选地加热 预处理单元中的前体,d)通过用胶溶液处理前体的涂层,在上胶单元中显影前体脱模,从而从支持体除去可光聚合层的未曝光区域,其中可光聚合 层还包括含有酸基的聚合物和能够中和酸基的碱性含氮化合物,或其中的照片 可聚合层还包括含有由碱性含氮化合物中和的酸基的聚合物。

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