| 摘要 |
PROBLEM TO BE SOLVED: To reutilize cards and also to restrict the waste of paper resources in a game by constituting bingo game cards through the use of reversible information display cards. SOLUTION: User cards UC are constituted by adhering reversible information display films TC where recording display and an erasion are reversibly executed by heat and magnetic recording medium films MF for storing information through the use of an adhesive resin GR, three recording trucks TK1, TK2 and TK3 for recording magnetic data are formed on a rear surface UCb and 7s-byte data is respectively recorded, for example. In the reversible information display films TC, a recording layer TC2 and a printing part UCc are laminated on one surface of a transparent material base member TC1 and a relection layer TC3 is laminated on the opposite side surface of the base member TC1. In the magnetic recording medium films MF, the magnetic recording layer MF2 and a printing layer MF3 are laminated. |
