| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide manufacturing technology for a keyboard that can substitute lead sufficiently in terms of working, cost, quality, etc. <P>SOLUTION: Two fitting holes 11 are bored in the keyboard 10 (A). Then the keyboard 10 is set on a fixation unit 25, and a molten lead alternative is injected into the fitting holes 11 and 11 from an injection unit 20 (B). Then the injected lead alternative is solidified to complete the keyboard 10 fitted with a lead-alternative weight 30 (C). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
