发明名称 |
MULTI PACK DISCRIMINATION CARD |
摘要 |
A multi-ply identification card for storage of machine-readable information includes optical markings disposed between protective layers. At least one of the protective layers can be penetrated by infrared light, and both are opaque to light of lesser wavelengths. The optical markings have a fine structure with at least 300 lines per mm and the protective layers are so connected to the optical markings that the markings are destroyed if one of the protective layers is removed. |
申请公布号 |
JPS5224000(A) |
申请公布日期 |
1977.02.23 |
申请号 |
JP19760092104 |
申请日期 |
1976.08.03 |
申请人 |
ERU GEE TSUETSUTO RANDEISU UNTO GIIRU TSUUKU AG |
发明人 |
DATSUBITSUDO RESURII GURIINAUEI |
分类号 |
G06K19/10;B42D15/10;B44F1/12;G06K19/14;G06K19/16;G07D7/12;G07D7/20;G11B7/24 |
主分类号 |
G06K19/10 |
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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