| 摘要 |
PROBLEM TO BE SOLVED: To provide a medium which can surely record information without coloring nonuniformity even while it is stuck to a tag, a container, etc. SOLUTION: A medium 1 has a recording layer 3 which develops color and eliminates the color by a reversible phase change, and a heat absorbing support layer 2 which is laminated on the recording layer 3. When only the recording layer 3 is heated, the heat of the recording layer 3 is absorbed sharply by the support layer 2 so that the recording layer 3 can be cooled rapidly. When the support layer 2 is also heated, since the recording layer 3 is cooled gradually, information can be eliminated. Since the recording layer 3 can be cooled by the support layer 2, information can surely be recording if it is recorded even while being stuck to a container, etc. |
