公开(公告)号：US20060073418A1

公开(公告)日：2006-04-06

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： G03F7/00

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。

公开(公告)号：US20050084797A1

公开(公告)日：2005-04-21

申请号：US10960466

申请日：2004-10-07

申请人： Joan Vermeersch ,  Sue Wilkinson ,  Dirk Kokkelenberg

发明人： Joan Vermeersch ,  Sue Wilkinson ,  Dirk Kokkelenberg

IPC分类号： B41C1/10 ,  G03C3/00

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

摘要： A heat sensitive lithographic printing plate precursor comprising in the order given (i) a lithographic base having a hydrophilic surface, (ii) an image recording layer comprising hydrophobic thermoplastic polymer particles and (iii) a contrast layer, wherein the precursor comprising an infrared absorbing compound present in at least one of said image recording layer or contrast layer and wherein the contrast layer further comprises a colorant capable of providing a visible image after exposure and development of the precursor and wherein the image recording layer is substantially free of the colorant. The printing plate formed after image-wise exposing and processing exhibits an improved image-contrast and reduced staining.

摘要翻译： 一种热敏平版印刷版原版，其顺序包括（i）具有亲水表面的平版印刷基底，（ii）包含疏水性热塑性聚合物颗粒的图像记录层和（iii）对比层，其中所述前体包含红外吸收 化合物存在于所述图像记录层或对比层中的至少一个中，并且其中所述对比层还包含能够在所述前体暴露和显影之后提供可见图像的着色剂，并且其中所述图像记录层基本上不含所述着色剂。 在成像曝光和加工后形成的印版显示出改进的图像对比度和减少的染色。

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。