| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a keyboard which simplifies the mounting of weights and allows the easy regulation of a touch weight while using substitutive materials in place of lead as the materials for the weights. SOLUTION: This keyboard has a freely oscillatable keyboard body 2 which is formed with embedment holes 9 and the weights 4 which are composed of a composite material formed by blending metals exclusive of the lead and plastic at a prescribed compounding ratio with each other and molding the mixture and having a prescribed specific gravity and are mounted to the keyboard body 2 by embedding the weights into the embedment holes 9.</p> |
