| 摘要 |
PURPOSE:To improve the operability and at the same time to input even minute graphic information by holding a radiant ray source and mounting a hollow elastic resin body into which mercury is injected on the front end part of a pen. CONSTITUTION:A radiant ray source 11 is fixed in a hollow resin body 12 made of a urethane rubber film. Mercury 14 is injected into the resin body 12. An element thus formed is fitted to a recessed part 15 at the front end part of a pen A so that one end of the element is projected to the outside. When the resin body 12 of the front end part of the pen A is pressed against a detecting surface B, the resin body 12 is deformed and the mercury at the lower part of the radiant ray source 11 is cut. Therefore, a radiant ray passes through the resin body 12 and enters into the detecting surface B. When the pen A is lifted from this condition, the resin body 12 returns to the original shape and the radiant ray is blocked by the mercury layer L. When such an arrangement is used, the operability can be improved and, at the same time, even minute graphic information can be inputted. |
