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    Method for making a lithographic printing plate
    22.
    发明授权
    Method for making a lithographic printing plate 有权
    平版印刷版的制造方法

    公开(公告)号：US07354696B2

    公开(公告)日：2008-04-08

    申请号：US11173466

    申请日：2005-06-30

    Applicant: Joan Vermeersch ,  Pascal Meeus ,  Dirk Kokkelenberg

    Inventor： Joan Vermeersch ,  Pascal Meeus ,  Dirk Kokkelenberg

    IPC: B41C1/10 ,  B41M5/36

    CPC classification number: B41C1/1025 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  Y10S430/145

    Abstract: A method for making a lithographic printing plate is disclosed which comprises the steps of: (i) providing a negative-working, heat-sensitive lithographic printing plate precursor comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating comprising an image-recording layer which comprises hydrophobic thermoplastic polymer particles and a hydrophilic binder,  wherein the hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm and wherein the amount of the hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70% by weight relative to the image-recording layer; (ii) exposing the coating to heat or infrared light, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; (iii) developing the precursor by applying an aqueous, alkaline solution, thereby removing non-exposed areas of the coating from the support, wherein the aqueous alkaline solution has a pH≧11 and comprises a phosphate buffer or a silicate buffer.

    Abstract translation: 公开了一种制备平版印刷版的方法，其包括以下步骤：（i）提供负性工作的热敏平版印刷版原版，其包含具有亲水性表面的支持体或设有亲水层和涂层 提供在其上的涂层包括包含疏水性热塑性聚合物颗粒和亲水性粘合剂的图像记录层，其中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，并且其中所述疏水性热塑性聚合物的量 图像记录层中的聚合物颗粒相对于图像记录层为至少70重量％ （ii）将涂层暴露于热或红外光，从而在涂层的暴露区域引起热塑性聚合物颗粒的聚结; （iii）通过施加水性碱性溶液来显影前体，从而从载体除去涂层的未曝光区域，其中碱性水溶液的pH> = 11且包含磷酸盐缓冲液或硅酸盐缓冲液。

    Method for making a negative working, heat-sensitive lithographic printing plate precursor
    24.
    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

    Applicant: Joan Vermeersch ,  Dirk Kokkelenberg ,  Huub Van Aert

    Inventor： Joan Vermeersch ,  Dirk Kokkelenberg ,  Huub Van Aert

    IPC: G03F7/00

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

    Abstract: 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.

    Abstract translation: 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
    25.
    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

    Applicant: Huub Van Aert ,  Joan Vermeersch ,  Dirk Kokkelenberg

    Inventor： Huub Van Aert ,  Joan Vermeersch ,  Dirk Kokkelenberg

    IPC: B41C110

    CPC classification number: B41C1/1025 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/22 ,  B41C2210/24 ,  B41M5/465

    Abstract: 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%.

    Abstract translation: 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 for making positive working printing plates from a light sensitive imaging element
    26.
    发明授权
    Method for making positive working printing plates from a light sensitive imaging element 失效
    从光敏成像元件制造正性印刷版的方法

    公开(公告)号：US6165689A

    公开(公告)日：2000-12-26

    申请号：US161285

    申请日：1998-09-28

    Applicant: Joan Vermeersch ,  Marc Van Damme ,  Dirk Kokkelenberg

    Inventor： Joan Vermeersch ,  Marc Van Damme ,  Dirk Kokkelenberg

    IPC: B41C1/10 ,  G03F7/016 ,  G03F7/021 ,  G03F7/11

    CPC classification number: G03F7/0215 ,  B41C1/1008 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/262 ,  G03F7/016 ,  G03F7/11

    Abstract: According to the present invention there is provided a method for making lithographic printing plates including the following steps:a) preparing a light sensitive imaging element having 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 unpenetrable for an alkaline developer containing SiO.sub.2 as silicate;b) exposing imagewise said light sensitive imaging element to actinic light;c) developing said imagewise exposed light sensitive imaging element with said alkaline developer so that the exposed areas of the top layer and the underlying areas of the first layer are dissolved and the unexposed areas of the first layer remain undissolved characterized in that said top layer includes a diazonium salt and for at least 20% of its weight one or more non-proteinic hydrophilic film-forming polymers.

    Abstract translation: 根据本发明，提供一种制备平版印刷版的方法，包括以下步骤：a）制备在光刻基底上具有亲水表面的光敏成像元件，该第一层包括可溶于碱性水溶液的聚合物 以及与作为第一层的平版印刷基底的相同侧上的顶层，其顶层对于含有SiO 2作为硅酸盐的碱性显影剂是不可穿透的; b）将所述光敏成像元件成像曝光成光化光; c）用所述碱性显影剂显影所述成像曝光的光敏成像元件，使得顶层的暴露区域和第一层的下面区域溶解，并且第一层的未曝光区域保持未溶解，其特征在于，所述顶层包括 重氮盐和至少20重量％的一种或多种非蛋白质亲水成膜聚合物。

    On the press development of a diazo based printing plate
    27.
    发明授权
    On the press development of a diazo based printing plate 失效
    关于重氮基印刷版的新闻发展

    公开(公告)号：US5776653A

    公开(公告)日：1998-07-07

    申请号：US760341

    申请日：1996-12-04

    Applicant: Joan Vermeersch ,  Eric Verschueren ,  Dirk Kokkelenberg

    Inventor： Joan Vermeersch ,  Eric Verschueren ,  Dirk Kokkelenberg

    IPC: B41C1/10 ,  B41N3/08 ,  G03F7/30 ,  G03F7/021 ,  G03F7/11

    CPC classification number: G03F7/305

    Abstract: 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 of 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.

    Abstract translation: 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）以具有柔性膜支持体的成像元件成像曝光，其顺序为（i）均匀的疏墨层 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成像元件通过将其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性组织擦拭而形成。

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