Title:
真贋判定情報が記録されたホログラム
Document Type and Number:
Japanese Patent JP4329999
Kind Code:
B2
Abstract:
The invention relates to a hologram having authenticating information recorded in such a way that the information is little viewable in an ordinary viewing state and an authenticator can easily check the authenticating information from a color difference, and so having high counterfeit-proofness. In a 3D image-reconstructing hologram 10 , a minute object 11 that is authenticating information is located behind a shielding block 12 of visually easy-to-perceive size, so that the authenticating information 11 is hidden by the shielding block 12 in a given viewing direction and so is not exposed to view, but can be viewed from a direction different from the given direction. Further, the authenticating information 11 and the shielding block 12 are recorded in such a way as to be viewable in mutually different colors.
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Inventors:
Mitsuru Kitamura
Application Number:
JP2004001807A
Publication Date:
September 09, 2009
Filing Date:
January 07, 2004
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
G03H1/26; B42D15/10; G03H1/08; G06K19/06; G06K19/10
Domestic Patent References:
| JP2003228270A | ||||
| JP10236039A |
Attorney, Agent or Firm:
Hiroshi Nagisawa
Ryukichi Abe
Hirukawa Masanobu
Norihiko Uchida
Hideo Sugai
Kenji Aoki
Akira Yonezawa
Ryukichi Abe
Hirukawa Masanobu
Norihiko Uchida
Hideo Sugai
Kenji Aoki
Akira Yonezawa