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。

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：US20110048265A1

公开(公告)日：2011-03-03

申请号：US12528586

申请日：2008-03-07

申请人： Paola Campestrini ,  Dirk Faes

发明人： Paola Campestrini ,  Dirk Faes

IPC分类号： B41N3/08

CPC分类号： B41N3/034 ,  B41C1/1008 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/10 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/262

摘要： A method for making a lithographic aluminum printing plate support comprising the steps of (i) graining said support by applying a charge density x; (ii) desmutting the grained support; (iii) graining the desmutted support by applying a charge density y; (iv) anodizing the support; characterized in that during each graining step a current density varying between 80 and 250 A/dm2 is applied and that the ratio x/x+y varies between 0.3 and 0.7.

摘要翻译： 一种制备平版印刷铝印版支撑体的方法，包括以下步骤：（i）通过施加电荷密度x来对所述支撑体进行磨粒; （ii）解散粮食支持; （iii）通过施加电荷密度y来对未完成的支持进行分段; （iv）阳极氧化载体; 其特征在于，在每个研磨步骤期间，施加在80和250A / dm 2之间变化的电流密度，并且x / x + y的比率在0.3和0.7之间变化。

公开(公告)号：US20110014381A1

公开(公告)日：2011-01-20

申请号：US12920872

申请日：2009-02-25

申请人： Paola Campestrini ,  Dirk Faes

发明人： Paola Campestrini ,  Dirk Faes

IPC分类号： C25F3/20 ,  B05D3/02

CPC分类号： B41N3/034 ,  C25F1/04 ,  C25F3/04

摘要： A method for making a lithographic printing plate support includes the steps of providing an aluminum support; graining the support in a graining electrolyte solution; and treating the grained support in a desmut electrolyte solution containing hydrochloric acid by applying a direct current resulting in a charge density Q; wherein the desmut electrolyte solution has a pH less than 1 and Q is at least 400 C/dm2.

摘要翻译： 制备平版印刷版支撑体的方法包括提供铝支架的步骤; 将颗粒化在电解质溶液中; 并通过施加导致电荷密度Q的直流电处理含有盐酸的去污电解液中的粒状载体; 其中所述去污电解液的pH小于1，Q为至少400C / dm 2。