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    Flake for covert security applications
    4.
    发明授权
    Flake for covert security applications 有权
    用于秘密安全应用的片

    公开(公告)号：US07258915B2

    公开(公告)日：2007-08-21

    申请号：US10641695

    申请日：2003-08-14

    申请人： Alberto Argoitia ,  Paul G. Coombs ,  Charles T. Markantes ,  Paul T. Kohlmann

    发明人： Alberto Argoitia ,  Paul G. Coombs ,  Charles T. Markantes ,  Paul T. Kohlmann

    IPC分类号： B32B5/16

    CPC分类号： C09C1/0021 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C01P2006/65 ,  C01P2006/66 ,  C09C1/0015 ,  C09C1/0018 ,  C09C2210/10 ,  C09C2210/20 ,  C09C2210/30 ,  C09D5/22 ,  C09D11/50 ,  C09K11/56 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/2991 ,  Y10T428/2998 ,  Y10T428/31504

    摘要： Covert flakes having one or more symbols and/or a selected shape are used in a composition, such as ink or paint, to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the covert flakes are covert pigment flakes that match the visual characteristics of the base pigment. In another embodiment, clear covert flakes are mixed in the carrier with base pigment. In another embodiment, clear covert flakes are mixed in a varnish base to provide a clear composition that can be applied over an existing security feature or elsewhere. The composition is used to print a field on the object, such as a stock certificate or bank note, for example. The covert flakes are not readily detectable by causal observation under visible light. In one embodiment, illuminating the covert security feature with ultraviolet light causes a covert flake to fluoresce and allows the observer to identify the location of the covert flake so that cover indicia may be observed. In a particular embodiment, a covert flake having one or more symbols is located using non-visible radiation, and then observed under visible light to read the symbol(s) on the covert flake.

    摘要翻译： 具有一个或多个符号和/或选定形状的隐蔽薄片用于诸如油墨或油漆的组合物中，以向对象提供隐蔽的安全特征。 在一些实施方案中，组合物包括基础颜料，并且隐形薄片是与基础颜料的视觉特性相匹配的隐蔽颜料薄片。 在另一个实施方案中，透明的薄片在载体中与基础颜料混合。 在另一个实施方案中，将透明的薄片混合在清漆基底中以提供可以在现有安全特征或其他地方施用的清楚的组合物。 组合物用于在对象上打印一个字段，例如股票证书或纸币。 通过在可见光下的因果观察，不易察觉到隐蔽的薄片。 在一个实施例中，用紫外光照射隐蔽安全特征将导致隐蔽的薄片发荧光，并允许观察者识别隐蔽薄片的位置，从而可以观察到覆盖标记。 在特定实施例中，使用不可见辐射定位具有一个或多个符号的隐形薄片，然后在可见光下观察以读取隐形薄片上的符号。

    Chromatic diffractive pigments and foils
    5.
    发明授权
    Chromatic diffractive pigments and foils 有权
    彩色衍射色素和箔

    公开(公告)号：US06841238B2

    公开(公告)日：2005-01-11

    申请号：US10117307

    申请日：2002-04-05

    申请人： Alberto Argoitia ,  Roger W. Phillips ,  Michael R. Nofi ,  Paul G. Coombs ,  Charles T. Markantes ,  Richard A. Bradley, Jr.

    发明人： Alberto Argoitia ,  Roger W. Phillips ,  Michael R. Nofi ,  Paul G. Coombs ,  Charles T. Markantes ,  Richard A. Bradley, Jr.

    IPC分类号： G02B5/22 ,  G02B5/18 ,  G02B5/28 ,  B32B5/16

    CPC分类号： G02B5/1861 ,  G03H2270/24 ,  Y10T428/25 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2993

    摘要： Multilayer chromatic diffractive pigment flakes and foils are provided having diffractive structures thereon. The diffractive pigment flakes can have a symmetrical stacked coating structure on opposing sides of a reflective core layer, an asymmetrical stacked coating structure on one side of a reflective layer, or can be formed with one or more encapsulating coatings around the reflective core layer. The diffractive pigment flakes can be interspersed into liquid media such as paints or inks to produce diffractive compositions for subsequent application to a variety of objects. The foils can be laminated to various objects or can be formed on a carrier substrate. The diffractive pigment flakes and foils can be formed with a variety of diffractive structures thereon to produce selected optical effects.

    摘要翻译： 提供在其上具有衍射结构的多层衍射颜料薄片和箔。 衍射颜料薄片可以在反射芯层的相对侧上具有对称的层叠涂层结构，在反射层的一侧上具有不对称的堆叠涂层结构，或者可以在反射芯层周围形成一个或多个封装涂层。 衍射颜料薄片可以散布在液体介质如油漆或油墨中，以产生用于随后应用于各种物体的衍射组合物。 箔可以层压到各种物体上，或者可以在载体基底上形成。 衍射颜料薄片和箔可以在其上形成各种衍射结构以产生选定的光学效果。