| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a reversible thermochromism recording material which does not impair a heat discoloration function of a reversible heat discoloration layer even in the repeated use and, moreover, enables easy checking of adhesion and a drying state of a cold heat liquid body and which is excellent in practicality. <P>SOLUTION: The reversible thermochromism recording material 1 is constituted by providing a substrate 2 with the reversible heat discoloration layer 3 which contains a microcapsule pigment containing (1) an electron donating color-developing organic compound, (2) an electron accepting compound and (3) a temperature-sensitive discoloration color storage composition consisting of a reaction medium controlling a color-developing reaction of (1) and (2), and a protective layer 4 which has resistance to a cold heat liquid medium. A perfect color development temperature t<SB>1</SB>of the microcapsule pigment is 0°C or below. On the outer surface of the reversible thermochromism recording material 1, there is provided a porous layer 6 which has a low refractive index pigment fixed in a state of being dispersed in a binder resin and of which the transparency differs between a state wherein the cold heat liquid medium is absorbed and a state wherein the medium is not absorbed. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
