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    • 1. 发明授权
    • Method for producing lithographic plates with imaging elements
comprising a photosensitive acid precursor
    • 用于制造具有包含光敏酸前体的成像元件的平版印刷版的方法
    • US5851724A
    • 1998-12-22
    • US521045
    • 1995-08-29
    • Marc Van DammeJoan VermeerschEtienne SchachtStefan Vansteenkiste
    • Marc Van DammeJoan VermeerschEtienne SchachtStefan Vansteenkiste
    • G03F7/004G03F7/00G03F7/34G03F7/11
    • G03F7/346
    • The present invention provides a method for obtaining a lithographic printing plate comprising the steps of: (a) image-wise or information-wise exposing a photosensitive imaging element comprising on a hydrophilic surface of a support a hydrophobic photosensitive layer contiguous to said hydrophilic surface, comprising (i) a photosensitive acid precursor and (ii) a hydrophobic polymeric binder and (b) developing said exposed imaging element by the steps of: (i) laminating before or after said exposure an uppermost layer of said imaging element to a receptor layer and (ii) peeling away the receptor layer from the hydrophilic surface of the support thus transferring said hydrophobic photosensitive composition patternwise to the receptor layer, characterized in that said hydrophobic photosensitive layer comprises as photosensitive acid precursor a non-ionic photosensitive precursor of a sulphonic acid or a non-ionic photosensitive precursor of an optionally partially esterified phosphonic acid or a non-ionic photosensitive precursor of an optionally partially esterified phosphoric acid, the latter phosphonic or phosphoric acid precursors in the absence of an acid-sensitive composition of (a) low molecular weight compound(s).
    • 本发明提供一种获得平版印刷版的方法,包括以下步骤:(a)将包含在支持物的亲水表面上的感光成像元件成像或信息地曝光与所述亲水表面邻接的疏水感光层, 包括(i)感光酸前体和(ii)疏水聚合物粘合剂和(b)通过以下步骤显影所述暴露的成像元件:(i)在所述曝光之前或之后将所述成像元件的最上层层合到受体层 并且(ii)将接收层从支撑物的亲水表面剥离,从而将所述疏水光敏组合物图案转移到受体层,其特征在于,所述疏水光敏层包含作为感光酸前体的磺酸的非离子感光性前体 或任选部分酯化的膦酸的非离子光敏前体 酸或非任选部分酯化的磷酸的非离子感光性前体,后者的膦酸或磷酸前体在不存在(a)低分子量化合物的酸敏感组合物的情况下进行。
    • 3. 发明授权
    • Method for accurate exposure of small dots on a heat-sensitive positive-working lithographic printing plate material
    • 在热敏正性平版印刷版材料上精确曝光小点的方法
    • US07467587B2
    • 2008-12-23
    • US11114210
    • 2005-04-21
    • Joan VermeerschWim SapMarc Van Damme
    • Joan VermeerschWim SapMarc Van Damme
    • B41C1/10B41M1/06G03F7/00
    • B41C1/1008B41C2210/02B41C2210/06B41C2210/22B41C2210/24B41C2210/262
    • 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.
    • 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。
    • 4. 发明授权
    • Method for making positive working printing plates from a heat mode sensitive imaging element
    • 从热模式敏感成像元件制造正性印刷版的方法
    • US06248503B1
    • 2001-06-19
    • US09186613
    • 1998-11-06
    • Joan VermeerschMarc Van DammeAndreas ElsässerInge Claes
    • Joan VermeerschMarc Van DammeAndreas ElsässerInge Claes
    • G03F7004
    • B41C1/10B41C1/1008B41C1/1016B41C2210/02B41C2210/06B41C2210/14B41C2210/22B41C2210/24B41C2210/262
    • According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of a) exposing imagewise to IR-radiation a heat mode 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 by an alkaline developer and contains a compound capable of converting light into heat, wherein said first layer and said top layer may be one and the same layer; and b) developing said imagewise exposed heat mode imaging element with said alkaline developer whereby the exposed areas of the first and the top layer, which may be the same, are dissolved and the unexposed areas of the first layer remain undissolved characterized in that said alkaline developer has a pH of at least 12 and a surface tension of at least 30 mN/m.
    • 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:a)将具有亲水表面的光学成像元件的热模式成像元件成像曝光于包含聚合物的第一层,所述第一层可溶于 碱性水溶液和位于与第一层相同的一侧的顶层,该顶层不能被碱性显影剂穿透,并且含有能够将光转化成热的化合物,其中所述第一层和所述顶层可以是 同一层; 和b)用所述碱性显影剂显影所述成像曝光的热模式成像元件,由此第一层和顶层的可能相同的暴露区域被溶解,并且第一层的未曝光区域保持未溶解,其特征在于所述碱性显影剂 具有至少12的pH和至少30mN / m的表面张力。
    • 10. 发明授权
    • Imaging element comprising a hydrophobic photopolymerizable composition
and method for producing lithographic plates therewith
    • 包含疏水性光聚合组合物的成像元件及其制造平版印刷版的方法
    • US5922506A
    • 1999-07-13
    • US539960
    • 1995-10-06
    • Yvan HoogmartensMarc Van DammeJoan VermeerschYves Verburgh
    • Yvan HoogmartensMarc Van DammeJoan VermeerschYves Verburgh
    • G03F7/004G03F7/00G03F7/027G03F7/028G03F7/033G03F7/038G03F7/039G03F7/09G03F7/095G03F7/34G03C1/76G03F7/26
    • G03F7/0955G03F7/34
    • The present invention provides a negative-working photosensitive imaging element comprising on a hydrophilic surface of a support in the order given (i) a hydrophobic photopolymerizable composition capable of being irradiated with actinic light through the support and/or through the front and containing at least one unsaturated compound with at least one polymerizable ethylenically unsaturated group, at least one hydrophobic thermoplastic polymer and at least one photoinitiator, and (ii) optionally a receptor layer, characterized in that said hydrophobic photopolymerizable composition comprises in the order given (i) a polymerizable layer contiguous to said hydrophilic surface and comprising at least part of said at least one unsaturated compound and (ii) a hydrophobic photosensitive layer contiguous to said polymerizable layer comprising at least part of said at least one hydrophobic thermoplastic polymer and of said at least one photoinitiator.The present invention also provides a method for obtaining a lithographic plate of high quality with said imaging element.
    • 本发明提供一种负性光敏成像元件,其按照以下顺序包含在载体的亲水性表面上:(i)疏水性光聚合性组合物,其能够通过载体和/或通过前面并通过前部照射光化学光,并且至少含有 一种具有至少一个可聚合烯键式不饱和基团的不饱和化合物,至少一种疏水性热塑性聚合物和至少一种光引发剂,和(ii)任选的受体层,其特征在于所述疏水性可光聚合组合物按照下列顺序包含:(i) 所述至少一部分所述至少一种不饱和化合物和(ii)与所述可聚合层邻接的疏水光敏层,其包含至少部分所述至少一种疏水性热塑性聚合物和所述至少一种光引发剂 。 本发明还提供了一种利用所述成像元件获得高质量的平版印刷版的方法。