| 摘要 |
<p>PURPOSE:To write and receive data on the same recording paper with a simple constitution by laminating a Y electrode plate, a pressure sensitive conductive plate, the recording paper, and an X electrode plate successively and constituting the X electrode plate with a transparent or translucent film-like material. CONSTITUTION:A Y electrode plate 22 having many electrodes in the Y direction, a pressure sensitive conductive plate 23 changing its electric resistance value in accordance with pressing force, a recording paper 13 developing colors when voltage is applied between the upper and lower surface, and a transparent or translucent film-like X electrode plate 27 having many electrodes in the X direction are laminated on the substrate having a prescribed plane area. Scanning devices 31, 32 are connected to the electrode plates 22, 27 respectively and transmission/reception switches 33, 34 and a signal control part 35 are connected to the devices 31, 32. Alteration switches 37, 38 are incorporated in the switches 33, 34. These switches 33, 34 are contacted with the electrode plate 27 so that their leading ends are pressed to make transmission status and released from the electrode plate 27 to make receiving status.</p> |
