发明名称 |
OPTICALLY VARIABLE DEVICES |
摘要 |
<p>A substrate, such as a banknote (10) or other document of value, is provided with a security feature in the form of an optically variable device (12), by a process which comprises applying a coating of an ink to a discrete area of the substrate (10) by a printing process, then impressing the ink coating using an impression die, to form a pattern of reflective grooves in the surface of the inked area, these reflective grooves forming an optically variable image under incident light.</p> |
申请公布号 |
WO9853999(A1) |
申请公布日期 |
1998.12.03 |
申请号 |
WO1998GB01537 |
申请日期 |
1998.05.27 |
申请人 |
FRYCO LIMITED;SHEARER, JAMES, ALEXANDER |
发明人 |
SHEARER, JAMES, ALEXANDER |
分类号 |
B42D15/00;(IPC1-7):B42D15/00 |
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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