| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hologram checking plate capable of facilitating a truth or a falsehood decision of a hologram. SOLUTION: The hologram checking plate decides a truth or a falsehood of the hologram in which its truth or the falsehood is desired to be decided by superposing the plate on the hologram and comparing display patterns of both the holograms. The plate is a checking plate using a translucent hologram. The display pattens becoming entirely same positional relation are respectively recorded on a forgery preventive hologram and the plate. The plate can check both the preventive hologram and the plate from a difference of their colors when the preventive hologram and the plate are superposed and the patterns are reproduced by a white light under the same conditions as those at a recording time and observed.</p> |
