| 摘要 |
<p>PURPOSE:To improve environmental resistance by providing a layer contg. a metal having a prescribed standard electrode potential on a metallic thin film layer. CONSTITUTION:A colored layer 2, a substrate layer 3, the metallic thin film layer 4, a protective layer 6, and the layer 6 contg. the metal having the standard electrode potential baser than the metal constituting the layer 4 are laminated on a base material 1, by which the ticket piece having the printed layer is constituted. If this ticket piece is immersed into an electrolyte soln., the elution of the metal of the layer 6 as anode and the layer 4 contributing to printing as anode into the electrolyte soln. is prevented. The corrosion to the sea water, city water, sake, vinegar, aq. sodium carbonate solns., etc., is suppressed and the environmental resistance is enhanced.</p> |
