| 摘要 |
PROBLEM TO BE SOLVED: To simply realize low price by impressing selectively different heat energy on a region of control information previously recording heat sensitive members, and constituting the heat sensitive members occupying the region so as to have different temperature characteristics. SOLUTION: In a heat sensitive member reacting to temperature to change the color, control information such as a specific letter, a sign, or a code is previously formed on a supporting body, and by impressing selectively different heat energy on a region of control information previously recorded in the heat sensitive member, the heat sensitive member has different temperature characteristics. Hereat, a temperature control member 1 is provided with two regions, i.e., a region A is formed with the part position displaying temperature control information 8, and a region B is formed with the part position displaying merchandise information 7. In the region A, for example, a temperature controlling code 10 displaying the temperature control information 8 is formed. In the region B, for example, date information 11 and merchandise controlling code 9 displaying the merchandise information 7 are formed.
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