发明名称 |
SECURITY FEATURE AND METHOD FOR PRODUCING A SECURITY FEATURE |
摘要 |
The invention relates to a security feature for securing documents of value having a plurality of microcapsules, which respectively have a wall and in which is respectively contained a liquid medium in which are distributed several magnetic particles which are movable in the liquid medium and whose arrangement within the microcapsule is changeable by the action of a magnetic field, whereby the magnetic particles are configured to arrange themselves within the microcapsule such that they form a light-diffractive structure. |
申请公布号 |
EP2473355(B1) |
申请公布日期 |
2013.10.16 |
申请号 |
EP20100720440 |
申请日期 |
2010.05.31 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
KECHT, JOHANN;STEINLEIN, STEPHAN |
分类号 |
B41M3/14;B42D15/00;B42D15/10;G02B6/122;G06K19/06;G07D7/04 |
主分类号 |
B41M3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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