| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sheet which is simple in constitution, is inexpensive, has high luminance and a strong iris and is highly effective in preventing forgery. SOLUTION: This sheet is formed with an ink layer containing many hologram film micropieces in the prescribed portion of a base material surface. The hologram sheet is preferably formed with the UV curing ink layer in which the hologram film micropieces are in the state of being oriented so as to be nearly flat to the base material surface.</p> |
