| 摘要 |
<p>PURPOSE:To improve quality and to reduce cost. CONSTITUTION:A motor part 19 is disposed between a rotating drum 5 and a fixed drum 6, and a head drum 3 is received and positioned on a drum base 2 by three receiving surfaces 16 which are provided at nearly equal positions by setting the rotary shaft 4 of the head drum 3 as center 4a. Thereafter, one screw 11 is tightened near the rotary shaft 4 and the head drum 3 is fixedly attached on the drum base 2.</p> |
