发明名称 |
Information-recorded media and methods for reading the information |
摘要 |
The invention is directed to an information-recorded medium with easily selectable and identifiable items of information, which is virtually protected against forgery and has enhanced security against some improper use, and a method for reading such a medium. This information-recorded medium 1 includes a substrate 2 and a layer 3 with information recorded thereon by the printing of infrared absorbing ink, said layer 3 being provided on the surface of the layer 2. The printed layer 3 is provided thereon with a relief hologram-recorded layer 7 through an adhesive layer 4, said hologram-recorded layer 7 being built up of a reflecting layer 5 transparent to the infrared region and a relief hologram-formed layer 6 provided on the surface of the reflecting layer 5. For reading, the hologram-recorded layer 7 is reconstructed by visible light, while the printed layer is reconstructed by infrared light, and the medium 1 is identified on the basis of the thus reconstructed information.
|
申请公布号 |
US5856048(A) |
申请公布日期 |
1999.01.05 |
申请号 |
US19930097765 |
申请日期 |
1993.07.26 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
TAHARA, SHIGEHIKO;KUROKAWA, SHINICHI;TAKAHASHI, NORIO;HORIGUCHI, RYUJI;SAKAI, MORITO;HAYAKAWA, AKIRA;KOMAKI, SHINPEI |
分类号 |
B41M3/14;B42D15/00;G03H1/00;G03H1/02;G03H1/04;G03H1/24;G03H1/26;G06K19/06;(IPC1-7):G03H1/04;G03H1/18 |
主分类号 |
B41M3/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|