| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard apparatus capable of stably obtaining appropriate stop feeling by making the distribution of particulates in a cavity part on an initial position of a key same at each time. <P>SOLUTION: A cavity part 32A is provided in a weight part 32 of a massive body 30 and a plurality of particulates 32B are supplied to the cavity part 32A so as to be movable inside. A partition wall 32C for parting the cavity part 32A in a back and forth direction is provided and a supply hole 32D is imparted on a lower end part of the partition wall 32C. <P>COPYRIGHT: (C)2009,JPO&INPIT |
