| 摘要 |
PURPOSE: To provide a magnetic card enabling frequency display more easy to look. CONSTITUTION: In a magnetic card displaying predetermined data such as a use state or frequency on the display surface thereof, a first irreversible recording thermal element showing a first color irreversibly when reaching a predetermined color forming temp. and a second irreversible recording thermal element 3 showing a second color irreversibly when reaching a predetermined color forming temp. are provided and data is displayed on the card display surface by first and second colors. Further, the data using the first color and the data using the second color are simultaneously displayed on the card display surface. |
