INDICATOR FOR TEMPERATURE HYSTERESIS AND MOISTURE DEPOSITION HYSTERESIS

摘要

PROBLEM TO BE SOLVED: To provide a simple indicator capable of detecting accurately both a temperature hysteresis and moisture deposition hysteresis by a clear and irreversible color tone and appearance change. SOLUTION: This indicator for the temperature hysteresis and moisture deposition hysteresis is provided with a base material applied with an indicator ink containing a granular or powdery thermally fusible substance having a melting point corresponding to a detected temperature, a granular or powdery pigment dispersible into the thermally fused substance, and a colored aqueous ink having a color tone different from that of the pigment. COPYRIGHT: (C)2005,JPO&NCIPI