| 摘要 |
PROBLEM TO BE SOLVED: To form an information recording medium capable of rewriting for a short period of time at low cost by the use of ink that is decolored by applying decoloring temperature, and recording a predetermined content in use of an ink jet printer. SOLUTION: An ink jet had H and a thermal printing plate are installed on the midway of transportation of an automatic ticket examination machine. The ink jet head H can be printed with a predetermined content on the recording part of a commuter pass C (an information recording medium). For an irradiation ink of the ink jet head H, ink is used which is erased as being heated at a predetermined high temperature. The thermal printing plate T includes a heater inside, operates to heat the part to a predetermined temperature when coming to the recording part of the commuter pass C, and can erase the content printed via the ink jet head H. In this manner, since the commuter pass C per se can be printed at high speed having no special quality, an efficiency of the ticket examination work can be improved. Also, inasmuch as a coming in and out state of the commuter pass C is printed visibly, the dishonest use of the commuter pass C can be prevented in advance. |
