| 发明名称 |
FORGERY PREVENTION MEDIUM |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a forgery prevention medium having high reliability in security. <P>SOLUTION: This forgery prevention medium includes: a volume hologram layer on which an interference pattern is recorded after being exposed to an emitted laser beam; a digital watermarking information layer that is interpreted by emitting a light beam with a predetermined wavelength; and an adherend that includes the digital watermarking information layer and is attached to the volume hologram layer. The information layer is of a different color from the volume hologram layer. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
| 申请公布号 |
JP2010256678(A) |
申请公布日期 |
2010.11.11 |
| 申请号 |
JP20090107620 |
申请日期 |
2009.04.27 |
| 申请人 |
DAINIPPON PRINTING CO LTD |
发明人 |
YAMAUCHI TAKESHI;KITAMURA MITSURU;KURASHIGE MAKIO;YASUDA YOSHIKI |
| 分类号 |
G09F3/00;B42D15/10;G02B5/32;G03H1/18;G09C5/00;G09F3/02 |
主分类号 |
G09F3/00 |
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