| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an identification medium not easy to be interpolated, counterfeited, and duplicated. <P>SOLUTION: An identification medium 1 consists of a first layer 121 and a second layer 122 superimposed on an object 11. The first layer 121 has a two-dimension code printed with ink. The second layer 122 has a two-dimension code on which a laser beam reflectance at a predetermined wavelength is printed with a material of a predetermined size. An ink color printed on the first layer 121 is set metameric to the color of the material printed on the second layer 122. Also, a position printed with the material on the second layer 122 is set above a position not printed with the ink on the first layer 121 in a state of superimposing the second layer 122 on the first layer 121. <P>COPYRIGHT: (C)2012,JPO&INPIT |
