Method for preparing lithographic printing plate precursors
    1.
    发明授权
    Method for preparing lithographic printing plate precursors 有权
    平版印刷版前体的制备方法

    公开(公告)号:US08377629B2

    公开(公告)日:2013-02-19

    申请号:US12996077

    申请日:2009-07-06

    Abstract: A method of preparing a lithographic printing plate in which no pre-heat step is used comprising the steps of:—providing a lithographic printing plate precursor comprising a support and a photopolymerizable image-recording layer, the image-recording layer comprising a monomer and a binder;—image-wise exposing the precursor in an exposure unit;—off press developing the exposed precursor with an aqueous solution in a processing unit; characterized in that the ratio of the total amount of monomer to the total amount of binder is at least 1 and the time lapse between exposing an image-area of the precursor and contacting the image-area with the aqueous solution is at least 1 minute.

    Abstract translation: 一种制备其中不使用预热步骤的平版印刷版的方法,包括以下步骤: - 提供包含载体和可光聚合图像记录层的平版印刷版原版,所述图像记录层包含单体和 粘合剂;在曝光单元中将前体曝光;在处理单元中用水溶液压制曝光的前体; 其特征在于,单体总量与粘合剂总量之比至少为1,暴露前体图像区域与图像区域与水溶液接触之间的时间间隔至少为1分钟。

    Method of making a photopolymer printing plate
    2.
    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。

    METHOD FOR MAKING A LITHOGRAPHIC PRINTER PLATE PRECURSOR
    3.
    发明申请
    METHOD FOR MAKING A LITHOGRAPHIC PRINTER PLATE PRECURSOR 有权
    制造光刻印刷机前驱体的方法

    公开(公告)号:US20100129755A1

    公开(公告)日:2010-05-27

    申请号:US12594091

    申请日:2008-05-15

    Abstract: A method for making a lithographic printing plate precursor is disclosed comprising the steps of a. providing a lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer, a photopolymerizable coating comprising a photopolymerizable composition, and an overcoat layer comprising a water soluble low molecular weight acid, wherein said overcoat layer has a surface pH-value ranging between 1 to 6; b. image-wise exposing the precursor; c. optionally heating the exposed precursor; d. processing the obtained precursor by applying a gum solution and optionally brushing the precursor, and/or by mounting the precursor on a plate cylinder of a lithographic printing press and rotating the plate cylinder while feeding dampening liquid and/or ink to the coating. The printing plate obtained after imaging and processing in an off-press configuration with a gum solution or in an on-press configuration with fountain solution and ink shows an improved roll-up performance in the start-up of a printing process on a printing press.

    Abstract translation: 公开了一种制备平版印刷版前体的方法,包括以下步骤:a。 提供一种平版印刷版原版,其包括具有亲水性表面的支持体,或设置有亲水层,包含可光聚合组合物的光聚合涂层和包含水溶性低分子量酸的外涂层,其中所述外涂层具有表面 pH值介于1到6之间; b。 以图像方式曝光前体; C。 可选地加热暴露的前体; d。 通过施加胶溶液和任选地刷涂前体来处理所获得的前体,和/或通过将前体安装在平版印刷机的印版滚筒上并旋转印版滚筒,同时将润版液体和/或墨水供给到涂层。 通过胶溶液在印刷结构中进行成像处理后获得的印刷版或具有润版液和油墨的印刷机构造成的印刷版在印刷机上的印刷过程启动时显示出改进的卷起性能 。

    Method of making a lithographic printing plate
    4.
    发明授权
    Method of making a lithographic printing plate 有权
    制作平版印刷版的方法

    公开(公告)号:US07704679B2

    公开(公告)日:2010-04-27

    申请号:US12093600

    申请日:2006-11-09

    Applicant: Marc Van Damme

    Inventor: Marc Van Damme

    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, a polymerization initiator and a binder, b) image-wise exposing the coating in a plate setter, c) optionally, heating the precursor in a pre-heating unit, d) treating the precursor in a gumming station, including a first and at least a second gumming unit, wherein the precursor is consecutively developed in the first and the second gumming unit with a gum solution, thereby removing non-exposed areas of the photopolymerizable layer from the support and gumming the plate in a single step.

    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)具有亲水表面的或具有亲水层的载体,(ii)载体上的涂层,包括 可光聚合层和任选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,聚合引发剂和粘合剂,b)成像曝光在印版机中的涂层,c)任选地 在预加热单元中加热前体,d)在上胶台中处理前体,包括第一和至少第二上胶单元,其中前体在第一和第二上胶单元中连续地用胶溶液显影 从而从支持体中除去可光聚合层的未曝光区域并且在单个步骤中涂覆该板。

    METHOD FOR MAKING A LITHOGRAPHIC PRINTING PLATE
    6.
    发明申请
    METHOD FOR MAKING A LITHOGRAPHIC PRINTING PLATE 失效
    制作平版印刷版的方法

    公开(公告)号:US20090017398A1

    公开(公告)日:2009-01-15

    申请号:US12280809

    申请日:2007-02-21

    Abstract: A method for making a lithographic printing plate includes the steps of providing a heat-sensitive lithographic printing plate precursor including on a support having a hydrophilic surface or which is provided with a hydrophilic layer, a heat-sensitive coating; image-wise exposing the precursor with IR-radiation or heat; and developing the image-wise exposed precursor with an alkaline developing solution, wherein an anti-sludge agent is present in the precursor or in the developing solution or in the precursor and the developing solution, and wherein the anti-sludge agent is a 5-membered heteroaromatic compound, including a —NH— group wherein the hydrogen is capable of being deprotonated in the alkaline developing solution, selected from the group consisting of an optionally substituted benztriazole, 1,2,3-triazole, tetrazole, or indazole compound. According to the above method, the formation of sludge is inhibited or reduced.

    Abstract translation: 制备平版印刷版的方法包括以下步骤:提供热敏平版印刷版原版,其包含在具有亲水性表面的支持体上,或提供有亲水层,热敏涂层; 用IR辐射或热量成像地曝光前体; 并用碱性显影液显影图像曝光的前体,其中在前体或显影液或前体和显影液中存在抗污泥剂,其中抗污泥剂为5- 包括其中氢能够在碱性显影溶液中去质子化的-NH-基团,其选自任选取代的苯并三唑,1,2,3-三唑,四唑或吲唑化合物。 根据上述方法,抑制或减少污泥的形成。

    Method for accurate exposure of small dots on a heat-sensitive positive-working lithographic printing plate material
    7.
    发明授权
    Method for accurate exposure of small dots on a heat-sensitive positive-working lithographic printing plate material 有权
    在热敏正性平版印刷版材料上精确曝光小点的方法

    公开(公告)号:US07467587B2

    公开(公告)日:2008-12-23

    申请号:US11114210

    申请日:2005-04-21

    Abstract: A method is disclosed for accurate reproduction of high-quality halftone images comprising microdots by means of lithographic plate materials which comprise a heat-sensitive positive-working coating that requires wet processing. Such microdots have a dot size ≦25 μm and may be obtained by stochastic screening or by amplitude-modulated screening at a ruling of not less than 150 lpi. It has been established that the “physical right exposure energy density” (physical REED) lies in the range from CP to 1.5*CP, wherein the physical REED is defined as the energy density at which the physical area on the plate, occupied by a microdot corresponding to a 50% halftone in the image data, coincides with the 50% target value; and wherein CP is the clearing point of the plate which is defined as the minimum energy density that is required to obtain, after processing, a dissolution of 95% of the coating. An accurate reproduction of microdots can therefore be achieved by exposing the material with light having an energy density in the range from CP to 1.5*CP. Loss of microdots by overexposure is thereby avoided.

    Abstract translation: 公开了一种用于通过平版印刷材料精确再现包含微点的高质量半色调图像的方法,该平版印刷材料包括需要湿法处理的热敏正性涂层。 这样的微点具有<25μm的点大小,并且可以通过随机筛选或通过幅度调制筛选获得,尺寸不小于150lpi。 已经确定的是,“身体右曝光能量密度”(物理REED)在CP到1.5 * CP的范围内,其中物理REED被定义为板上的物理区域的能量密度,由 在图像数据中对应于50%半色调的微点符合50%的目标值; 并且其中CP是板的清除点,其被定义为在加工后95%的涂层的溶解所需的最小能量密度。 因此,通过用能量密度在CP至1.5×CP范围内的光使材料曝光,可以实现微点的精确再现。 从而避免由于过度曝光导致的微点损失。

    Method for processing lithographic printing plates
    9.
    发明申请
    Method for processing lithographic printing plates 审中-公开
    平版印刷版的处理方法

    公开(公告)号:US20060257789A1

    公开(公告)日:2006-11-16

    申请号:US11413918

    申请日:2006-04-28

    CPC classification number: G03F7/322

    Abstract: The invention relates to a method of making a lithographic printing plate comprising the steps of providing a photopolymer printing plate precursor that is photopolymerizable upon absorption of light in the wavelength range from 300 to 700 nm, exposing said printing plate precursor with light in the range from 300 to 700 nm and processing said exposed precursor with an aqueous alkaline developer, characterized in that the alkaline developer comprises a polyethyleneoxide/polypropyleneoxide surfactant having a specific composition. The method leads to less depositions in the developing apparatus and on the processed printing plates and the developer used has an increased sedimentation stability.

    Abstract translation: 本发明涉及一种制备平版印刷版的方法,其包括以下步骤:提供在吸收波长范围为300至700nm的光时可光聚合的光聚合物印版前体,将所述印版前体用 300至700nm,并用含水碱性显影剂处理所述暴露的前体,其特征在于碱性显影剂包括具有特定组成的聚环氧乙烷/聚氧化丙烯表面活性剂。 该方法导致显影装置和加工印刷版上的沉积少,并且所使用的显影剂具有增加的沉降稳定性。

    Heat-sensitive lithographic printing plate precursor
    10.
    发明授权
    Heat-sensitive lithographic printing plate precursor 失效
    热敏平版印刷版前体

    公开(公告)号:US07087359B2

    公开(公告)日:2006-08-08

    申请号:US10765797

    申请日:2004-01-27

    Abstract: A positive working printing plate precursor is disclosed which comprises a hydrophilic support and a coating provided thereon which comprises in the order given a first layer containing an oleophilic resin soluble in an aqueous alkaline developer and a second layer comprising a water repellent-compound. Furthermore, the coating comprises an infrared absorbing dye containing a perfluoroalkyl group providing a printing plate precursor with high sensitivity.

    Abstract translation: 公开了一种正性工作印刷版前体,其包括亲水性支持物和在其上提供的涂层,其顺序包含含有可溶于碱性水溶液的亲油性树脂的第一层和包含防水化合物的第二层。 此外,涂层包含含有全氟烷基的红外吸收染料,提供具有高灵敏度的印版前体。

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