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    A diazo based imaging element having increased sensitivity
    1.
    发明公开
    A diazo based imaging element having increased sensitivity 失效
    Diazo-Aufzeichnungselement mitvergrösserterEmpfindlichkeit

    公开(公告)号：EP0811878A1

    公开(公告)日：1997-12-10

    申请号：EP97201632.3

    申请日：1997-06-03

    申请人： AGFA-GEVAERT N.V.

    发明人： Vermeersch, Joan ,  Kokkelenberg, Dirk

    IPC分类号： G03F7/021

    CPC分类号： G03F7/021

    摘要： The present invention provides an imaging element comprising on a hydrophilic surface of a support a light sensitive layer comprising a diazo resin characterized in that the light sensitive layer comprises at least one diazo resin being a condensation product of 4,4' bis methoxy methyl diphenyl ether with a diazonium salt of a p-aminodiphenylamine.
    The present invention also provides a method for making a lithographic printing plate comprising the steps of image-wise exposing an imaging element as defined above and subsequently developing a thus obtained image-wise exposed imaging element by means of rinsing or washing with an aqueous liquid.

    摘要翻译： 本发明提供了一种成像元件，其在载体的亲水表面上包含包含重氮树脂的光敏层，其特征在于，所述光敏层包含至少一种重氮树脂，其是4,4'-双甲氧基甲基二苯基醚 与对氨基二苯胺的重氮盐。 本发明还提供了一种制备平版印刷版的方法，包括以下步骤：将如上所述的成像元件成像曝光，随后通过用水性液体冲洗或洗涤来显影如此获得的成像曝光的成像元件。

    On the press development of a diazo based printing plate
    4.
    发明公开
    On the press development of a diazo based printing plate 失效
    Auf der Druckpresse entwickelbare Diazodruckplatten

    公开(公告)号：EP0778499A1

    公开(公告)日：1997-06-11

    申请号：EP95203377.7

    申请日：1995-12-07

    申请人： AGFA-GEVAERT naamloze vennootschap

    发明人： Vermeersch, Joan ,  Verschueren, Eric ,  Kokkelenberg, Dirk

    IPC分类号： G03F7/30 ,  B41C1/10 ,  B41N3/08

    CPC分类号： G03F7/305

    摘要： According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of:

    (1) image-wise exposing an imaging element having on a flexible film support in the order given (i) a uniform ink-repellant layer comprising a cross-linked hydrophilic binder and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin;
    (2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and wiping it with a disposable absorbing tissue moistened with water or fountain solution.

    摘要翻译： 根据本发明，提供了一种制备平版印刷版的方法，包括以下步骤：（1）按照以下顺序成像曝光具有柔性膜载体的成像元件：（i）均匀的墨水排斥层 包括交联的亲水性粘合剂和（ii）包含重氮盐或重氮树脂的感光层; （2），并将如此获得的图像曝光的成像元件安装在印刷机的印刷滚筒上并用浸有水或润版液的一次性吸收组织擦拭。

    A method for making positive working printing plates
    7.
    发明公开
    A method for making positive working printing plates 有权
    Verfahren zur Herstellung积极的arbeitender Druckplatten

    公开(公告)号：EP1025991A1

    公开(公告)日：2000-08-09

    申请号：EP99200291.5

    申请日：1999-02-02

    申请人： AGFA-GEVAERT N.V.

    发明人： Vermeersch, Joan ,  Van Damme, Marc ,  Kokkelenberg, Dirk ,  Braspenninckx, Bart

    IPC分类号： B41C1/10

    CPC分类号： B41C1/1016 ,  B41C2210/02 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/262 ,  B41N3/06

    摘要： According to the present invention there is provided a method for the preparation of a lithographic printing plate comprising the steps of

    exposing with IR light an imaging element comprising on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution and a top layer on the same side of the lithographic base as the first layer which top layer is IR-sensitive and unpenetratable for or insoluble in an alkaline developer wherein said first layer and said top layer may be one and the same layer, said imaging element comprising a siloxane surfactant;
    developing said exposed imaging element with an alkaline solution;
    rinsing said developed imaging element with water or an aqueous solution;
    gumming said developed imaging element with a baking gum solution;
    subjecting said gummed imaging element to a thermal treatment at a temperature above 50°C;
    characterized in that said rinsing is carried out with a brushing and/or with water containing a surfactant.

    摘要翻译： 根据本发明，提供了一种用于制备平版印刷版的方法，包括以下步骤：用IR光曝光成像元件，该成像元件在光刻基底上具有亲水表面，第一层包括可溶于碱性水溶液的聚合物 溶液和与第一层在平版印刷基底的同一侧上的顶层，该顶层对于碱性显影剂是IR敏感的和不可渗透的或不溶于碱性显影剂，其中所述第一层和所述顶层可以是同一层，所述 成像元件包括硅氧烷表面活性剂; 用碱性溶液显影所述曝光的成像元件; 用水或水溶液漂洗所述显影成像元件; 用烘烤胶溶液涂上所述显影成像元件; 使所述胶粘成像元件在高于50℃的温度下进行热处理; 其特征在于，所述漂洗用刷洗和/或含有表面活性剂的水进行。