| abstract |
In an information display card having a reversible thermosensitive recording layer, the warp generated on the card is extremely small even when the card is heated, and the print quality is maintained well even if the image is rewritten repeatedly. To do. An information display card having a reversible thermosensitive recording layer formed by laminating and integrating plastic sheets is bonded to a plastic sheet of a different material on the outermost layer on both the front and back sides of the card, and the reversible thermosensitive recording layer is also provided. The thickness T1 of the outermost plastic sheet on the side where the metal is disposed and its average linear expansion coefficient α1 of 20 to 100 ° C., and the thickness T2 of the outermost plastic sheet on the other side and its average linear expansion coefficient α2 of 20 to 100 ° C. And satisfy the following relational expression. (Relational expression) 0.5 <(T1 × α1) / (T2 × α2) <1.0 [Selection] Figure 1 |