| 摘要 |
<p>PURPOSE:To erase printed information, and to use a form any number of times by manufacturing paper, on which a retrieved document is printed, in a regenerated paper system with a regenerative memory unit. CONSTITUTION:Regenerated paper 30 with a memory unit is composed of paper 10 coated with a liquid, in which a dye and an organic high molecular compound are dissolved in a solvent, and the memory unit 20 and a memory 21, which are bonded with paper 10 and in which information is stored. When heat 40 is applied into the region 50 of the regenerated paper 30, the color development of a color different from a color before the application of heat is generated in the region 50 in the memory regenerated paper 30. The operation is repeated, thus printing information 60 on the regenerated paper 30. An electric signal 70 corresponding to information 60 is input to the memory 21 from a terminal 80 at the same time, and information 60 is stored in the memory 21 in the memory unit 20. When the whole regenerated paper 30 is irradiated with beams 41, the color-developed section of regenerated paper 30 is returned to an original color, thus erasing information 60. The electric signal 71 of erasing indication is input simultaneously from the terminal 80, and the information 60 of the memory 21 in the memory unit 20 is erased.</p> |
