| 摘要 |
PROBLEM TO BE SOLVED: To provide a calling card with an iridescent effect, the originality of which can be enjoyed with its unique color ever developed in that the iridescence reflects in a complex fashion from every angle of viewing and the developed color changes depending upon the angle at which the calling card is looked at, because a hologram for forgery proofness and security purposes is used on the entire surface of the calling card. SOLUTION: The complex iridescent color is developed and changes significantly depending upon the angle at which the calling card is looked at by using the hologram for forgery proofness and security purposes on the entire surface of the calling card.
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