| 摘要 |
<p>A current densely flows along the surface on the basis of the skin effect in wiring patterns (41 to 43). The wiring patterns (41 to 43) are formed of hollow conductors. Even if the same amount of conductors as before is used for the wiring patterns (41 to 43), a sufficient surface area is secured in the wiring patterns (41 to 43) compared with before. The current efficiently flows in the wiring patterns (41 to 43). Additionally, because the wiring patterns (41 to 43) are formed of the hollow conductors, the ratio of facing a thin plate body (35) in the surface is reduced. As a result, the influence of the proximity effect is lowered. The unevenness of the current density in the wiring patterns (41 to 43)is avoided. In addition, because the wiring patterns (41 to 43) define a hollow space (46), an increase in the mass of the wiring patterns (41 to 43) is avoided as much as possible. The resonant frequency of a head suspension unit (21) is suppressed low.</p> |
