Hitachi, Ltd.

Katsuya Fukasawa

Masayasu Fujisawa

Hirotaka Imayama

Yoshiki Hagiwara

Shigeo Nakamura

Mikio Tokuyama

Issei Takemoto

Kazushige Hashimoto

Yasuyuki Nakajima

Yukimori Umakoshi

Michio Takahashi

Keii Ueno

Kooji Serizawa

The magnetic head assembly including a magnetic head having a terminal composed of a conductive film and a supporting spring. The supporting spring has interconnecting patterns (lines) on the top thereof and a projective electrode. The terminal of the magnetic head is electrically connected to the projective electrode of the supporting spring by a solderless, direct contact connection. The magnetic head is fixed to the supporting spring by using a non-electrical bonding agent. This structure makes it possible to stabilize the position of the magnetic head assembly and the relative speed variation between the magnetic head element and the magnetic disk, thereby enhancing the reliability of the magnetic disk apparatus.

Method of electrically connecting a magnetic head, a magnetic head body and a magnetic disc apparatus

A fine grain milling method mixes powder into a high-pressure fluid, and injects the mixture to a work material covered with a mask to form the work material to a desired shape. In addition, the method injects anther high-pressure fluid to the powder adhered to the work material to remove the powder. The method can accurately transfer the mask pattern to the work material.

Method of fine grain milling and machine therefor

A fine grain milling method which mixes powder into a high-pressure fluid, and injects the mixture to a workpiece covered with a mask or pattern to process the workpiece to a desired shape. Another high-pressure fluid is injected to remove the powder adhering to the workpiece thereby enabling an accurate transfer of the mask or pattern to the workpiece.

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Yokohama, Japan

Katsuya Fukasawa