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    Optical effect pigment
    3.
    发明授权
    Optical effect pigment 有权

    公开(公告)号：US11787948B2

    公开(公告)日：2023-10-17

    申请号：US16627719

    申请日：2018-06-21

    申请人： SICPA HOLDING SA

    发明人： Andrés Ruiz Quevedo

    IPC分类号： C09C1/00 ,  C09D11/322

    CPC分类号： C09C1/0015 ,  C09D11/322 ,  C01P2006/42 ,  C01P2006/60 ,  C09C2200/1054 ,  C09C2200/24 ,  C09C2210/50

    摘要： Optical effect pigment comprising a plurality of layers and a magnetic element, the layers can be arranged in two stacks of asymmetric layers or in a single stack of layers and comprise at least an absorber layer and at least a dielectric layer and can further comprise a reflector layer. The magnetic element presents a magnetisation which is out-of-plane, i.e. predominantly perpendicular to the plane of the pigment, which allows a deposition on the printing substrate whereby the face of the pigment lying up or down on the substrate can be predetermined. Such effect pigment has applications in many fields and specifically in security printing, where due to controlled deposition for instance a double-stack pigment will produce a different optical effect on each of its faces.

    Optical-Effect-Producing Medium, Use Thereof and Object Having an Optically Responsive Feature Produced Using Said Optical-Effect-Producing Medium
    8.
    发明申请
    Optical-Effect-Producing Medium, Use Thereof and Object Having an Optically Responsive Feature Produced Using Said Optical-Effect-Producing Medium 审中-公开
    光学效应产生介质，使用它们和使用所述光学效应产生介质产生光学响应特征的物体

    公开(公告)号：US20120088079A1

    公开(公告)日：2012-04-12

    申请号：US13157683

    申请日：2011-06-10

    申请人： Elizabeth A. Downing ,  Nicholas K. Sheridon

    发明人： Elizabeth A. Downing ,  Nicholas K. Sheridon

    IPC分类号： B32B3/10 ,  C09D5/00 ,  C09D11/02

    CPC分类号： C09C1/3607 ,  C01P2004/32 ,  C01P2004/61 ,  C09C2210/50 ,  C09D11/037 ,  G07D7/1205 ,  Y10T428/24901

    摘要： There is described an optical-effect-producing medium comprising a carrier medium (1) containing or comprising pigment particles (10) having at least one optically responsive pigment or dye (100) that responds to incident electromagnetic radiation of at least a selected excitation wavelength or wavelength band (λEX) by producing an optical response in the visible or near-visible spectrum. A refractive index (n1) of the carrier medium (1) and a refractive index (n2; n3) of the pigment particles (10) are selected to maximise the amount of incident electromagnetic radiation reaching the said at least one optically responsive pigment or dye (100). Also described is the use of such optical-effect-producing medium to produce an optically responsive feature, especially for security, authentication and/or identification purposes, as well as objects comprising such an optically responsive feature.

    摘要翻译： 描述了一种光学效应产生介质，其包含含有或包含颜料颗粒（10）的载体介质（1），所述载体介质（10）具有至少一种光学响应颜料或染料（100），其响应于至少所选激发波长的入射电磁辐射 或波长带（λEX），通过在可见光或近似可见光谱中产生光学响应。 选择载体介质（1）的折射率（n1）和颜料颗粒（10）的折射率（n2; n3）以最大化到达所述至少一种光学响应颜料或染料的入射电磁辐射的量 （100）。 还描述了使用这种产生光学效应的介质以产生光学响应特征，特别是用于安全性，认证和/或识别目的，以及包括这种光学响应特征的物体。