| 摘要 |
<p>PURPOSE:To execute writing/erasing with one pen and by one-handed operation by providing a means that changes the extent in which a writing pen or an erasing pen can write or erase simultaneously. CONSTITUTION:In case of electromagnetic induction type, the nib part is formed of a ferrite core. The ferrite core or an electrode of the nib is divided into slender parts 21, 31 at the center and other thick parts 22, 32. When writing by a change-over switch 11, only the slender part 21 or 31 can be projected to contact a panel 1, and when erasing the whole thick part 22 or 23 can be brought into contact with the panel. Accordingly, resolution for each dot is possible when writing, and many dots can be erased simultaneously when erasing.</p> |
