| 摘要 |
<p>PURPOSE:To prevent falsification by hiding a bar code layer. CONSTITUTION:A hiding layer 9 covering a bar code layer 8 hides a specific pattern of the layer 8 so that it cannot be visually recognized, and the layer 8 is formed by printing or the like using a material in which visible light cannot be transmitted. Thus, since the layer 8 is hidden by the layer 9, bar code information cannot be found and its position cannot be recognized. Further, since the layer 8 is provided at a lower layer than an OP layer 7, falsification by cannot be performed substantially. Because, when any falsification by is performed for the bar code, the layer 7 is required to break, and this means that the bar code itself is broken.</p> |
