发明名称 |
SECURITY DOCUMENT HAVING VISUALLY CONCEALED SECURITY INDICIA |
摘要 |
<p>Security document (1) with security indicia (21) for preventing unauthorised reproduction, the security indicia being detectable in transmitted light, wherein the security indicia are located within the bounds of a security pattern (20) acting to visually conceal the security pattern in reflected light. The security pattern may be formed of one or more elements (25) and may have a complexity selected to enable the concealment of the security indicia (21).</p> |
申请公布号 |
CA2318071(A1) |
申请公布日期 |
1999.07.22 |
申请号 |
CA19992318071 |
申请日期 |
1999.01.14 |
申请人 |
SECURENCY PTY. LTD. |
发明人 |
ZIENTEK, PAUL;POWER, GARY |
分类号 |
B42D15/00;(IPC1-7):B42D15/00;B44F1/12 |
主分类号 |
B42D15/00 |
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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