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    • 9. 发明授权
    • Colour laser marking methods of security document precursors
    • 安全文件前体的彩色激光打标方法
    • US09067450B2
    • 2015-06-30
    • US14241115
    • 2012-09-04
    • Bart WaumansPaul CallantIngrid Geuens
    • Bart WaumansPaul CallantIngrid Geuens
    • B41J2/435G03C8/00B41M3/14B41M5/26B41M5/323B41M5/34
    • B41M3/14B41M3/142B41M5/267B41M5/323B41M5/34
    • A method of color laser marking a security document precursor including at least: a transparent biaxially stretched polyethylene terephthalate foil; at least one colorless color forming layer for generating a color different from black containing at least an infrared absorber a color forming compound and a polymeric binder; and a laser markable polymeric support or a laser markable layer for generating a black color; comprising the steps of: laser marking the colorless color forming layer through the transparent polymeric foil with a infrared laser used in continuous wave mode to generate a color different from black; and laser marking the laser markable polymeric support or the laser markable layer through the transparent polymeric foil with the same infrared laser but used in a pulsed mode to generate a black color.
    • 一种彩色激光标记安全文件前体的方法,至少包括:透明双轴拉伸聚对苯二甲酸乙二醇酯箔; 至少一个无色颜色形成层,用于产生不同于至少含有红外线吸收剂的成色化合物和聚合物粘合剂的黑色; 以及用于产生黑色的可激光标记聚合物支撑体或激光可标记层; 包括以下步骤:通过使用连续波模式的红外激光通过透明聚合物箔激光标记无色成色层以产生不同于黑色的颜色; 并且通过具有相同红外激光器的透明聚合物箔片激光标记可激光标记聚合物支持体或激光可标记层,但以脉冲模式使用以产生黑色。
    • 10. 发明申请
    • Colour Laser Marking Methods of Security Document Precursors
    • 安全文件前体的彩色激光打标方法
    • US20140232810A1
    • 2014-08-21
    • US14241115
    • 2012-09-04
    • Bart WaumansPaul CallantIngrid Geuens
    • Bart WaumansPaul CallantIngrid Geuens
    • B41M3/14
    • B41M3/14B41M3/142B41M5/267B41M5/323B41M5/34
    • A method of colour laser marking a security document precursor including at least: a transparent biaxially stretched polyethylene terephthalate foil; at least one colourless colour forming layer for generating a colour different from black containing at least an infrared absorber a colour forming compound and a polymeric binder; and a laser markable polymeric support or a laser markable layer for generating a black colour; comprising the steps of: laser marking the colourless colour forming layer through the transparent polymeric foil with a infrared laser used in continuous wave mode to generate a colour different from black; and laser marking the laser markable polymeric support or the laser markable layer through the transparent polymeric foil with the same infrared laser but used in a pulsed mode to generate a black colour.
    • 一种彩色激光标记安全文件前体的方法,至少包括:透明双轴拉伸聚对苯二甲酸乙二醇酯箔; 至少一个无色颜色形成层,用于产生不同于至少含有红外线吸收剂的成色化合物和聚合物粘合剂的黑色; 以及用于产生黑色的可激光标记聚合物支撑体或激光可标记层; 包括以下步骤:通过使用连续波模式的红外激光通过透明聚合物箔激光标记无色成色层以产生不同于黑色的颜色; 并且通过具有相同红外激光器的透明聚合物箔片激光标记可激光标记聚合物支持体或激光可标记层,但以脉冲模式使用以产生黑色。