| 摘要 |
PURPOSE:To obtain reusable print paper by forming the print paper from a colored shape memory sheet having small projections distributed and formed thereon, the opaque liquid substance having a color different from that of the sheet filling the spaces between the small projections of the sheet and the transparent cover covering one surface of the resin sheet. CONSTITUTION:A colored shape memory resin sheet 2 having small projections 2a distributed and formed thereon is used in print paper 1 and filled with an opaque liquid substance 3 having a color different from that of the sheet 2 and a transparent cover 4 is arranged. When the outer surface of the transparent cover 4 is struck by a type, the small projections 2a of the sheet are collapsed and the opaque liquid substance 3 moves to the gaps between the small projections 2a. When the print paper 1 is looked through the transparent cover 4, the color of the shape memory resin sheet at the collapsed parts of the small projections 2a, for example, a black character pattern appears. When the used print paper is immersed in hot water of 90 deg., the sheet 2 is returned to the shape before stamping wherein the small projections 2a protrude and the opaque liquid substance 3 again penetrates in the gaps between the small projections 2a and a printed character pattern is erased and the original state is restored. |
