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    OPTICAL EFFECT LAYERS SHOWING A VIEWING ANGLE DEPENDENT OPTICAL EFFECT; PROCESSES AND DEVICES FOR THEIR PRODUCTION; ITEMS CARRYING AN OPTICAL EFFECT LAYER; AND USES THEREOF
    5.
    发明公开
    OPTICAL EFFECT LAYERS SHOWING A VIEWING ANGLE DEPENDENT OPTICAL EFFECT; PROCESSES AND DEVICES FOR THEIR PRODUCTION; ITEMS CARRYING AN OPTICAL EFFECT LAYER; AND USES THEREOF 审中-公开
    与具有光学效应和层的文章视角依赖的光学效果，方法和制造设备的光学效果蛋鸡及其用途

    公开(公告)号：EP2943291A2

    公开(公告)日：2015-11-18

    申请号：EP14700155.6

    申请日：2014-01-07

    申请人： Sicpa Holding SA

    发明人： SCHMID, Mathieu ,  LOGINOV, Evengy ,  DESPLAND, Claude Alain ,  DEGOTT, Pierre

    IPC分类号： B05D3/00 ,  B41M3/14 ,  B42D15/00

    摘要： The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the invention relates to optical effect layers (OEL) showing a viewing-angle dependent optical effect, devices and processes for producing said OEL and items carrying said OEL, as well as uses of said optical effect layers as an anti-counterfeit means on documents. The OEL comprises a plurality of non-spherical magnetic or magnetizable particles, which are dispersed in a coating composition comprising a binder material, wherein in at least a loop-shaped area of the OEL at least a part of the plurality of non-spherical magnetic or magnetizable particles are oriented such that their longest axis is substantially parallel to the plane of the OEL, and wherein, in a cross-section perpendicular to the OEL and extending from the center of the central area, the longest axis of the oriented particles present in the loop-shaped area forming the impression of the loop-shaped body follow a tangent of either a negatively curved or a positively curved part of a hypothetical ellipse or circle.

    摘要翻译： 本发明涉及安全文件的保护领域：例如纸币和打击假冒和非法复制身份证件。 特别地，本发明涉及到示出了视场角，用于产生所述OEL相关的光学效果，装置和方法的光学效果层（OEL）和物品承载所述OEL，以及所述光学效应层的用途如在防伪手段 上的文档。 的OEL包括非球形磁性或可磁化颗粒，其分散在涂料组合物包含粘结材料，worin的中的多个OEL的至少非球形磁性的多个部分的至少一个环形区域 或可磁化颗粒被定向搜索做他们的最长轴线基本上平行于OEL的平面上，并且worin，在一横截面垂直于OEL和从中心区域，存在于取向颗粒的最长轴线的中心延伸 在形成环状体的印象环状区域按照要么带负弯曲的或假想的椭圆或圆的正弯部的切线。

    DEVICE, SYSTEM AND METHOD FOR PRODUCING A MAGNETICALLY INDUCED VISUAL EFFECT
    6.
    发明公开
    DEVICE, SYSTEM AND METHOD FOR PRODUCING A MAGNETICALLY INDUCED VISUAL EFFECT 审中-公开
    设备，系统和方法用于产生磁场导致的视觉效果

    公开(公告)号：EP2619630A1

    公开(公告)日：2013-07-31

    申请号：EP11761072.5

    申请日：2011-09-23

    申请人： SICPA HOLDING SA

    发明人： DEGOTT, Pierre ,  DESPLAND, Claude-Alain ,  SCHMID, Mathieu

    IPC分类号： G03G15/20 ,  G03G19/00 ,  G03G21/04 ,  B41M3/14

    摘要： The invention relates to a device, system and method for producing magnetically induced visual effects in coatings, particularly security or decorative features, containing orientable magnetic particles. The device comprises a printing unit, an orientation means, a substrate-guiding system and a photocuring unit. The printing unit is arranged to print with the coating composition an image on a first side of a substrate. The orientation means comprises a magnetic field generating element for orienting the magnetic particles in the coating composition of the printed image. The substrate-guiding system is arranged to bring and hold the substrate in contact with the orientation means. The photocuring unit irradiates the image printed on the substrate to at least partially cure the coating composition of the image while the substrate is still in contact with the orientation means. The photocuring unit is configured such that its emission of thermal radiation energy is such limited as to not heat the orientation means to an average temperature T1 exceeding 100° C.