| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the forgery prevention effect, inexpensive and suitable for a small lot by containing an image treated layer formed of colored and transparent ink in a manner that a part of the image treated layer is overlapped on a color change printing layer. SOLUTION: A color change printing layer 13 is formed on the surface of a card base 11, and a part of the color change layer is overlapped on an ordinary printing layer 12, and an image is formed by using color change ink to be color changed by a first angleαand a second angleβ. An image is formed on the color change printing layer 13 by using the color change ink in which a pigment 13a prepared by laminating a high refractive index layer and a low refractive index layer in a transparent medium 13a. A card having visual effect and forgery prevention effect and changing colors by the angles can be formed easily and inexpensively by the arrangement.</p> |
