| abstract |
In an information display card having a reversible thermosensitive recording layer, warpage due to temperature heating is extremely small, and the print quality of a recorded image can be maintained satisfactorily. An information display card having a reversible heat-sensitive recording layer formed by laminating and integrating plastic sheets is disposed on the outermost layers on both the front and back sides of the card (T1, T2) and average linear expansion. The coefficients (α1, α2) are selected so as to satisfy the following relational expression, heat-pressed, and then the sheet surface on the reversible thermosensitive recording layer side is heated to form. (Relational expression 1) When sheets are made of the same material: 0.3 <T1 / T2 ≦ 0.5 (Relational expression 2) When sheets are made of different materials: 0.3 <(T1 × α1) / (T2 × α2) ≦ 0.5 [Selection] Figure 1 |