Temperature Detection Device, Temperature Detection Device Issuing Apparatus, and Temperature Detection Method
AssigneeSeiko Instruments Inc.
InventorsNorimitsu SAMBONGI, Yoshinori SATO, Takashi YAMAMOTO
Life of this patent
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Abstract
A temperature detection device, includes a base material and a temperature indicator, which is provided on the base material, which contains a reversible heat discoloration composition material having color change temperature hysteresis in a normal temperature environment, and which changes color when a detected temperature reaches a threshold value or lower.
Claims15
A temperature detection device, comprising:
- a base material;
- and
- a temperature indicator, which is provided on the base material, which contains a reversible heat discoloration composition material having color change temperature hysteresis in a normal temperature environment, and which changes color when a detected temperature reaches a threshold value or lower.
A temperature detection device, comprising:
- a base material;
- a temperature indicator, which is provided on the base material, which contains a reversible heat discoloration composition material having color change temperature hysteresis in a normal temperature environment, and which develops color when a detected temperature reaches a threshold value or lower;
- and
- a start information print reserved portion, which is provided on the same surface of the base material as an installation surface where the temperature indicator is installed, and in which start information about start of temperature detection is to be printed.
A temperature detection device issuing apparatus with which a temperature detection device including a temperature indicator is issued, the temperature indicator containing a reversible heat discoloration composition material that has color change temperature hysteresis in a normal temperature environment, the temperature indicator developing color when a detected temperature is equal to or lower than a threshold value, the temperature indicator losing color when the detected temperature is equal to or higher than a second threshold value, which is higher than the threshold value, the temperature detection device issuing apparatus comprising:
- a heating unit capable of heating the temperature indicator to a temperature equal to or higher than the second threshold value;
- a printing unit capable of printing start information on the temperature detection device;
- and
- a control unit configured to control the heating unit and the printing unit.
A temperature detection method using a temperature detection device that includes a temperature indicator to detect a lower limit storage temperature range of an object whose temperature is to be detected, the temperature indicator containing a reversible heat discoloration composition material that has color change temperature hysteresis in a normal temperature environment, the temperature indicator developing color when a detected temperature is equal to or lower than to threshold value, the temperature indicator losing color when the detected temperature is equal to or higher than a second threshold value, which is higher than the threshold value, the temperature detection method comprising:
- heating the temperature indicator to a temper equal to or higher than the second threshold value;
- and
- printing information on the temperature detection device.
Dependencies are inferred from the claim text.