| 摘要 |
<p>PURPOSE:To enable a person in charge to directly and distinctly verify whether the illegal use, such as a free ride in intervening sections, or not, by providing a display layer which allows the recording and erasing of visible information as a color change of chromatic colors. CONSTITUTION:The display layer 102 and a protective layer 103 are successively laminated on the front side of a base material 101 and a magnetic recording layer 104 is laminated on the rear side of the base material 101. The display layer 102 is provided on a part of the front side and a printed layer is provided between the base material 101 and the protective layer 103 in the part exclusive of the display area. The display layer 102 consists of a high-polymer liquid crystal or photochromic material in this case and is repeated reversibly in a transparent state and a color developed state of the chromatic colors by heating and rapid cooling or slow cooling or photoirradiation and the stop of the photoirradiation. The visible information can be reversibly displayed and erased as the color change of the chromatic colors in such a manner and, therefore, the person in charge can directly and distinctly verify the illegal ride from the display of entrance data even if the illegal use, such as a free ride in the intervening sections, is made.</p> |
