To solve such problems in which a hologram sheet with pattern is stuck onto a sticking object for identifying the authenticity of the sticking object, however, if it is possible to produce a counterfeit simply by printing a similar pattern on a hologram sheet and sticking it to another sticking object that is not authentic and to use it, the authenticity cannot be maintained.
In this hologram sheet with patterns, patterns slightly different in visibility are formed on the upper/lower parts of a hologram forming layer that constitutes the hologram sheet, so as to give recognition as if one pattern is formed on both sides. When determining the authenticity, the authentication is easily determined by determining the slight difference in visibility.
| JP2010072385A | 2010-04-02 | |||
| JP2010256381A | 2010-11-11 | |||
| JP2005345982A | 2005-12-15 |
Keiko Fukamachi
Hideo Ito
Hiromi Fujimasu
Naoki Goto
Yusuke Ito