| 摘要 |
PROBLEM TO BE SOLVED: To easily handleably record and erase information and to easily color display the information, by arranging a recording layer containing particles of a shape memory material obtained by dispersing heat fusible resin filler in a shape memory resin and a binder for fixing the particles as main components on a base material. SOLUTION: A recording layer 2 is provided on a base material 1. The layer 2 contains particles 12 of a shape memory material and a binder 22 for fixing the particles 12 as main components to constitute a reversible information recording medium. As the material 1, a polymer material such as a polyethylene, a polypropylene or the like having mechanical toughness, softness and flexibility or a film having a thickness of 10 to 100 μm or the like is used. As the binder for fixing the particles on the material, an acrylic resin, urethane resin or the like is used. As an embodiment of the shape memory resin, a styrene-butadiene copolymer rubber, a natural rubber or the like is used. As a heat fusible resin filler, a resin having a melting point of 60 to 200 deg.C and being rapidly thermally molten is suitably used. |
