| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the printed articles such as printed characters become illegible without recourse once they turn color faded. SOLUTION: The pieces of information are written on a base 12 using the first and the second functionality ink of which color changes from the first and the second coloring integrity to the first and the second color fading integrity, respectively, with the passage of time, and, when a physical operation common to the first and the second functionality ink 14 and 16 is added, the color changes from the first and the second color fading integrity to the first and the second coloring integrity. Colors of the first and the second coloring integrity are indistinguishable to each other, and, at the same time, colors of the first and the second color fading integrity are indistinguishable to each other. The pieces of information are written on the base with the first functionality ink of the first coloring integrity, and, at the same time, the second functionality ink of the second color fading integrity is coated on the domain including the information displaying domain of the first functionality ink. COPYRIGHT: (C)2010,JPO&INPIT |
