| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an indicator including a function capable of measuring how much time a predetermined temperature is applied to an object and a function capable of visually confirming application of temperature. <P>SOLUTION: In an indicator 10, a first electrode 21 and a second electrode 22 are formed by mutually facing a coloring layer 15, the first electrode 21 is fixed on a fixing end 13, and the second electrode 22 is stuck to one side of a high molecular material sheet 14 and is movable. The high molecular material sheet 14 has characteristics of being crystallized and contracted and becoming opaque at a predetermined temperature. Since a distance between the electrodes 21 and 22 is changed by contraction following the crystallization of the high molecular material sheet 14, how much time the predetermined temperature is applied can be measured by reading a capacitance change and a color observation change of the coloring layer 15 can be confirmed through a window 18 of a film 16 by opacity of the high molecular material sheet 14, so that application of the predetermined temperature can be confirmed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
