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    Method for making a lithographic printing plate
    16.
    发明申请
    Method for making a lithographic printing plate 有权
    平版印刷版的制造方法

    公开(公告)号：US20060014103A1

    公开(公告)日：2006-01-19

    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: G03F7/00

    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。

    Imaging element for producing a lithographic plate therewith
    17.
    发明授权
    Imaging element for producing a lithographic plate therewith 失效
    用于制造平版印刷版的成像元件

    公开(公告)号：US6080523A

    公开(公告)日：2000-06-27

    申请号：US235318

    申请日：1999-01-22

    Applicant: Joan Vermeersch ,  Marc Van Damme ,  Dirk Kokkelenberg ,  Inge Claes

    Inventor： Joan Vermeersch ,  Marc Van Damme ,  Dirk Kokkelenberg ,  Inge Claes

    IPC: G03F1/00 ,  G03F7/11

    CPC classification number: G03F7/202

    Abstract: According to the present invention there is provided an imaging element comprising on a support having a hydrophilic surface in the order given a photosensitive layer insoluble in an aqueous alkaline solution and capable of becoming soluble in said aqueous alkaline solution upon exposure with actinic light and a thermosensitive layer comprising a masking dye rendering said thermosensitive layer opaque to light for which said photosensitive layer has spectral sensitivity and said imaging element further comprising a compound A capable of converting light into heat comprised in said thermosensitive layer or a layer adjacent thereto, characterized in that said thermosensitive layer further comprises thermoplastic particles of a hydrophobic polymer.

    Abstract translation: 根据本发明，提供了一种成像元件，其包含在具有亲水表面的支持体上，其顺序为给定不溶于碱性水溶液的感光层，并且当用光化学曝光并且能够变得易溶于碱性水溶液时， 所述掩模染料使所述热敏层不透光，所述光敏层对于所述感光层具有光谱灵敏度的光，并且所述成像元件还包含能够将光转换成包含在所述热敏层中的热或与其相邻的层的化合物A，其特征在于所述 热敏层还包括疏水性聚合物的热塑性颗粒。

    Diazo based imaging element containing hydrolysed polyvinyl alcohol and metal-free phthalocyanine
    18.
    发明授权
    Diazo based imaging element containing hydrolysed polyvinyl alcohol and metal-free phthalocyanine 失效
    含有水解聚乙烯醇和无金属酞菁的基于重氮的成像元件

    公开(公告)号：US5753403A

    公开(公告)日：1998-05-19

    申请号：US628898

    申请日：1996-04-09

    Applicant: Joan Vermeersch ,  Dirk Kokkelenberg ,  Luc Vanmaele ,  Jan Gilleir

    Inventor： Joan Vermeersch ,  Dirk Kokkelenberg ,  Luc Vanmaele ,  Jan Gilleir

    IPC: G03F7/105 ,  G03F7/021 ,  G03F7/30

    CPC classification number: G03F7/105

    Abstract: The present invention provides an imaging element comprising on a hydrophilic base a light-sensitive layer containing polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight, a cationic surfactant and a diazo resin and/or a diazonium salt characterized in that the light-sensitive layer comprises metal-free phthalocyanine. The present invention also provides a method for obtaining an imaging element as defined in any of the claims 1 to 6 by preparing a dispersion of metal-free phthalocyanine in water in the presence of a cationic surfactant in an amount ranging from 0.24 g/l to 24 g/l; preparing a light-sensitive composition by mixing said dispersion, polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight and a diazo resin and/or a diazonium salt and coating said light-sensitive composition on a hydrophilic base, characterized in that said dispersion comprises polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight in an amount ranging from 4.0 g/l to 200 g/l.

    Abstract translation: 本发明提供了一种成像元件，其在亲水性基底上包含水解至少95重量％的聚乙烯醇的光敏层，阳离子表面活性剂和重氮树脂和/或重氮盐，其特征在于，所述光 敏感层包括无金属酞菁。 本发明还提供一种获得如权利要求1至6中任一项所述的成像元件的方法，其通过在阳离子表面活性剂存在下，通过制备金属酞菁在水中的分散体，其量为0.24g / l至 24 g / l; 通过将所述分散体，至少水解95重量％的聚乙烯醇与重氮树脂和/或重氮盐混合并将所述感光组合物涂覆在亲水基底上来制备感光组合物，其特征在于所述 分散体包括以4.0g / l至200g / l的量水解至少95重量％的聚乙烯醇。

    Method for obtaining a lithographic printing plate utilizing a diazo-base imaging element containing a dispersed water insoluble polymer
    19.
    发明授权
    Method for obtaining a lithographic printing plate utilizing a diazo-base imaging element containing a dispersed water insoluble polymer 失效
    利用含有分散的水不溶性聚合物的重氮基成像元件获得平版印刷版的方法

    公开(公告)号：US5667939A

    公开(公告)日：1997-09-16

    申请号：US629136

    申请日：1996-04-08

    Applicant: Joan Vermeersch ,  Dirk Kokkelenberg

    Inventor： Joan Vermeersch ,  Dirk Kokkelenberg

    IPC: G03F7/016 ,  G03F7/00 ,  G03F7/021 ,  G03F7/033 ,  G03F7/038 ,  G03F7/40 ,  G03F7/32

    CPC classification number: G03F7/40 ,  G03F7/0212 ,  G03F7/021

    Abstract: The present invention provides a method for obtaining a lithographic printing plate comprising the steps of (i) image-wise exposing an imaging element comprising on a hydrophilic surface of a support a light sensitive layer containing a diazo resin or a diazonium salt and a dispersed water-insoluble polymer with a melting point or glass transition temperature above 40.degree. C. and capable of coagulating when heated at or above its melting point or glass transition temperature, and (ii) subsequently removing the light sensitive layer in the non-exposed or insufficiently exposed areas of said imaging element by means of rinsing or washing said imaging element with plain water, characterized in that afterwards said developed image-wise exposed imaging element is heat-treated at a temperature at least equal to the glass transition temperature or melting point of said dispersed water-insoluble polymer.

    Abstract translation: 本发明提供了一种获得平版印刷版的方法，包括以下步骤：（i）成像元件将成像元件成像曝光，所述成像元件在载体的亲水表面上含有含有重氮树脂或重氮盐的光敏层和分散的水 不溶性聚合物，其熔点或玻璃化转变温度高于40℃，并且当在其熔点或玻璃化转变温度以上时加热时能够凝结，和（ii）随后除去未曝光或不充分的光敏层 通过用普通水冲洗或洗涤所述成像元件，所述成像元件的暴露区域，其特征在于，所述显影图像曝光的成像元件在至少等于玻璃化转变温度或熔点的温度下进行热处理 所述分散的水不溶性聚合物。

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