| 发明名称 |
Invisible invisible information detecting apparatus and method |
| 摘要 |
<p>An object of the present invention is to provide an invisible information recorded medium having an identification mark. In order to achieve the object, an invisible information recorded medium is provided having an identification mark recorded thereon, the identification mark being composed of a region having a high reflectance and a region having a low reflectance as compared with the reflectance of the medium in the same near infrared ray region. <IMAGE></p> |
| 申请公布号 |
EP0608118(B1) |
申请公布日期 |
2004.11.24 |
| 申请号 |
EP19940300375 |
申请日期 |
1994.01.19 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
YOSHINAGA, KAZUO;TANIOKA, HIROSHI;ARIMOTO, SHINOBU;HAYASHI, TOSHIO;NAKAI, TAKEHIKO;UTAGAWA, TSUTOMU;NAGASE, TETSUYA;SASANUMA, NOBUATSU |
| 分类号 |
B42D15/10;G03G9/08;G03G9/09;G03G21/00;G03G21/04;G07D7/12;H04N1/00;(IPC1-7):B41M3/14 |
主分类号 |
B42D15/10 |
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