| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a printed matter of which the printed contents are hidden completely, of which the printed contents being hidden are presented completely by rubbing and, moreover, which does not wear nor impair a rubbing material on the occasion of rubbing, nor bring about any dust. SOLUTION: This printed matter with a hiding layer has a base 10, a printed layer 13 provided on the base and a hiding layer 14 hiding a part or the whole of the printed layer 13. The hiding layer is constituted of a pressure-sensitive transparent material prepared by dispersing an organic monomeric substance in a resin matrix, and it is white before pressure is applied thereto and becomes transparent when the pressure is applied.</p> |
