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    Method for making a negative working, heat-sensitive lithographic printing plate precursor
    4.
    发明申请
    Method for making a negative working, heat-sensitive lithographic printing plate precursor 有权
    制造负极热敏平版印刷版前体的方法

    公开(公告)号：US20060019200A1

    公开(公告)日：2006-01-26

    申请号：US11173325

    申请日：2005-06-30

    申请人： Joan Vermeersch ,  Dirk Kokkelenberg ,  Huub Van Aert

    发明人： Joan Vermeersch ,  Dirk Kokkelenberg ,  Huub Van Aert

    IPC分类号： G03F7/00

    CPC分类号： B41C1/1025 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  B41M2205/12

    摘要： A method for making a heat-sensitive negative-working lithographic printing plate precursor is disclosed comprising the steps of (i) preparing a coating solution comprising hydrophobic thermoplastic polymer particles and a hydrophilic binder; (ii) applying said coating solution on a support having a hydrophilic surface or which is provided with a hydrophilic layer, thereby obtaining an image-recording layer; (iii) drying said image-recording layer; characterized in that said hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm, and that the amount of said hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70% by weight relative to the dried image-recording layer.

    摘要翻译： 公开了制备热敏负性平版印刷版原版的方法，其包括以下步骤：（i）制备包含疏水性热塑性聚合物颗粒和亲水性粘合剂的涂布溶液; （ii）将所述涂布溶液涂布在具有亲水性表面的支持体上，或者设置有亲水层，从而获得图像记录层; （iii）干燥所述图像记录层; 其特征在于，所述疏水性热塑性聚合物颗粒的平均粒度在45nm至63nm的范围内，并且图像记录层中的所述疏水性热塑性聚合物颗粒的量相对于干燥的 图像记录层。

    Printing system with a negative working thermal plate for onpress development
    5.
    发明授权
    Printing system with a negative working thermal plate for onpress development 失效
    印刷系统采用负极工作热敏板进行开发

    公开(公告)号：US06805052B2

    公开(公告)日：2004-10-19

    申请号：US09996554

    申请日：2001-11-28

    申请人： Huub Van Aert ,  Joan Vermeersch ,  Dirk Kokkelenberg

    发明人： Huub Van Aert ,  Joan Vermeersch ,  Dirk Kokkelenberg

    IPC分类号： B41C110

    CPC分类号： B41C1/1025 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/22 ,  B41C2210/24 ,  B41M5/465

    摘要： A printing system making use of a lithographic printing plate has been disclosed, the system comprising the steps of image-wise exposing to infrared light a heat sensitive imaging element, the element being optionally present on the printing press before starting the image-wise exposing step to infrared light, wherein the element comprises, on a lithographic base with a hydrophilic surface thereupon, an image-forming layer including hydrophobic thermoplastic polymer particles and a hydrophilic polymer binder, and, optionally, an infrared absorbing compound, wherein the hydrophobic polymer particles contain more than 0.1 wt % of nitrogen and have an average particle size diameter in the range from 0.015 to 0.150 &mgr;m; developing the image-wise exposed imaging element by mounting it on a print cylinder of a printing press and applying an aqueous dampening liquid ink to the imaging element while rotating the print cylinder; providing a printing run length of the press, increased with a factor of at least 5, when reducing the average particle size diameter of the hydrophobic polymer particles in an amount of more than 25%.

    摘要翻译： 已经公开了利用平版印刷版的印刷系统，该系统包括以下步骤：在开始成像曝光步骤之前，该元件可选地存在于印刷机上，红外光成像曝光于热敏成像元件 其中所述元件在其上具有亲水表面的光刻基底上包括包含疏水性热塑性聚合物颗粒和亲水性聚合物粘合剂的图像形成层，以及任选的红外吸收化合物，其中所述疏水性聚合物颗粒含有 大于0.1重量％的氮，平均粒度直径在0.015〜0.150μm的范围内; 通过将图像曝光的成像元件安装在印刷机的印刷滚筒上并将水性润版液体油墨施加到成像元件同时旋转印刷滚筒; 当减少超过25％的疏水聚合物颗粒的平均粒度直径时，提供压机的印刷行程长度至少为5倍。

    Method of emulsion polymerization
    7.
    发明授权
    Method of emulsion polymerization 有权

    公开(公告)号：US07022762B2

    公开(公告)日：2006-04-04

    申请号：US10802706

    申请日：2004-03-17

    申请人： Huub Van Aert ,  Joan Vermeersch ,  Etienne Van Thillo ,  Jos Huybrechts

    发明人： Huub Van Aert ,  Joan Vermeersch ,  Etienne Van Thillo ,  Jos Huybrechts

    IPC分类号： C08L9/04

    CPC分类号： C08F2/24 ,  C08F2/22 ,  C08F2/38

    摘要： A method has been disclosed of preparing ultrafine hydrophobic latex particles of polymers and copolymers by free radical emulsion polymerization in a water-based system, making use therefor, in order to polymerize or copolymerize monomers or monomer mixtures respectively, of at least one compound selected from the group consisting of dimers and cobalt complexes, acting as a chain transfer agent (CTA), wherein said latex particles have an average particle size of less than 100 nm, being more than 10% lower than if prepared in the absence of said CTA, characterized in that said polymerization is conducted in a water-based reaction in the presence of a chain transfer agent and of a surfactant, wherein said surfactant is present in a concentration versus said monomer or monomer mixture of from 5 up to 25% by weight for a non-ionic surfactant or from 0.05 up to 10% by weight for an ionic surfactant, more particularly a surfactant in a concentration below twice its critical micelle concentration.

    Heat mode sensitive imaging element for making positive working printing plates
    8.
    发明授权
    Heat mode sensitive imaging element for making positive working printing plates 有权
    加热模式敏感成像元件，用于制作正性印刷版

    公开(公告)号：US06489079B1

    公开(公告)日：2002-12-03

    申请号：US09391421

    申请日：1999-09-08

    申请人： Eric Verschueren ,  Joan Vermeersch ,  Marc Van Damme ,  Guido Hauquier ,  Huub Van Aert

    发明人： Eric Verschueren ,  Joan Vermeersch ,  Marc Van Damme ,  Guido Hauquier ,  Huub Van Aert

    IPC分类号： G03F7004

    CPC分类号： B41C1/1025 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/24 ,  B41N1/083 ,  Y10S430/165

    摘要： According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate 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 unpenetrable for an alkaline developer wherein said first layer and said top layer may be one and the same layer; characterized in that said top layer contains at least one blockcopolymer in an amount between 0.5 and 500 mg/m2.

    摘要翻译： 根据本发明，提供一种用于制造平版印刷版的热模式成像元件，该平版印刷版包括在具有亲水表面的平版印刷基底上，第一层包括可溶于碱性水溶液的聚合物和位于同一侧上的顶层 作为第一层的光刻基底，其顶层对于碱性显影剂是IR敏感的和不可穿透的，其中所述第一层和所述顶层可以是同一层; 其特征在于所述顶层含有至少一种0.5-500mg / m 2的嵌段共聚物。

    Method of making a negative-working lithographic printing plate
    10.
    发明授权
    Method of making a negative-working lithographic printing plate 有权
    制造负性平版印刷版的方法

    公开(公告)号：US07318995B2

    公开(公告)日：2008-01-15

    申请号：US11239534

    申请日：2005-09-29

    申请人： Sue Wilkinson ,  Huub Van Aert ,  Dirk Faes ,  Joan Vermeersch

    发明人： Sue Wilkinson ,  Huub Van Aert ,  Dirk Faes ,  Joan Vermeersch

    IPC分类号： G03F7/03

    CPC分类号： B41C1/1025 ,  B41C2201/04 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/10 ,  B41C2210/22 ,  B41C2210/24 ,  G03F7/3035 ,  G03F7/32

    摘要： A method for preparing a negative-working lithographic printing plate is provided which comprises the steps of (1) providing a lithographic printing plate precursor comprising on a grained and anodized aluminum support, having a hydrophilic surface, a coating comprising (i) polymer particles which are core-shell particles having a hydrophobic heat-softenable core and a hydrophilic shell and (ii) an infrared light absorbing agent, (2) exposing said coating to heat, thereby inducing coalescence of said polymer particles at exposed areas of said coating, and (iii) developing said precursor by applying a gum solution to said coating, thereby removing non-exposed areas of said coating from said support.According to the above method the printing plates exhibit after ageing an improved clean-out and a reduced background stain, resulting in toning-free printing.

    摘要翻译： 提供了制备负性平版印刷版的方法，其包括以下步骤：（1）提供平版印刷版前体，其包含在具有亲水表面的颗粒和阳极氧化的铝载体上，涂层包含（i）聚合物颗粒， 是具有疏水性可热软化芯和亲水壳的核 - 壳颗粒和（ii）红外光吸收剂，（2）使所述涂层曝光加热，从而在所述涂层的暴露区域诱导所述聚合物颗粒的聚结，以及 （iii）通过将胶溶液施加到所述涂层来显影所述前体，从而从所述载体除去所述涂层的未曝光区域。 根据上述方法，印版在老化后显示出改善的清洁和减少的背景污点，导致无色调打印。