| 发明名称 |
SECURITY PRINTING |
| 摘要 |
A security print proof against photocopying in which a primary image is rendered in a density modulation of pairs of lines, and a secondary image is applied to said primary image by altering the relationship between lines in a pair.
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| 申请公布号 |
WO03068522(A1) |
申请公布日期 |
2003.08.21 |
| 申请号 |
WO2003GB00571 |
申请日期 |
2003.02.08 |
| 申请人 |
ASCENT SYSTEMS SOFTWARE LIMITED;SMITH, IAN, RODNEY |
发明人 |
SMITH, IAN, RODNEY |
| 分类号 |
B41M3/14;(IPC1-7):B41M3/14 |
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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