| 发明名称 |
COEXTRUDIERTE VERBUNDFOLIE |
| 摘要 |
<p>The identity card (1) contains at least one layer (7) which is suitable for lettering. Information is written into this laye using a laser beam. The information is made irreversibly visible by changes of the optical properties effected by the laser beam The layer to be lettered is a lacquer layer in which additives, which are absorbent for the wavelengths of the laser writer introduced.</p> |
| 申请公布号 |
AT397771(T) |
申请公布日期 |
2008.06.15 |
| 申请号 |
AT20000110988T |
申请日期 |
1993.12.23 |
| 申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
BERGMANN, MATTHIAS;HENKENSCHUH, HORST;KRUSCHE, REINHARD;RIEDL, JOSEF |
| 分类号 |
G06K19/18;B29C47/00;B32B7/02;B42D25/41;G06K19/06;G06K19/08;G06K19/10;G11B7/24 |
主分类号 |
G06K19/18 |
| 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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