| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fluorescent display that can display termination of a usable period at a point when a use term of validity of an article ends in order to simplify a system of reuse within a period of the display, with providing one of ways for preventing reuse. <P>SOLUTION: In the fluorescent display, at least a strongly light-resistant fluorescent ink layer, a fluorescent ink layer weak in light resistance, and an ink layer presenting no fluorescence are formed on one surface of a base material. The strongly light-resistant fluorescent ink layer and the ink layer presenting no fluorescence are sequentially formed on an upper surface of the fluorescent ink layer of the weak light resistance. Alternatively, the fluorescent ink layer of the weak light resistance and the fluorescent ink layer of the strong light resistance are formed evenly on one side of the base material, on which the ink layer presenting no fluorescence is formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
