| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a copy protection sheet capable of practical printing with a laser printer and capable of preventing copy with a copy machine etc.SOLUTION: There is provided a copy protection sheet 1 comprising a toner layer 6 in which light permeable UV medium ink containing 2,6-di-t-butyl-4-methylphenol is applied onto a metallic foil layer 4 arranged on surface of a sheet substrate 2 with an interposed adhesive layer 3. By virtue of the construction, the toner layer 6 improves toner fixing property of a laser printer, thus practical printing onto the metallic foil layer 4 with the laser printer may be realized. Furthermore, in a case of copying with a copy machine etc., specular reflection on the metallic foil layer 4 preventing recognizable copying of letter, pattern etc. on the metallic foil layer 4, thus leakage of confidential information may be prevented.</p> |
