Shielding function for magnetic head in magnetic disk device

Details Shielding function for magnetic head in magnetic disk device Shielding function for magnetic head in magnetic disk device

2005-09-30

2009-08-18

Chen, Tianjie (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

07576944

ABSTRACT:
Embodiments of the invention provide a magnetic disk device capable of improving the shielding function for the magnetic head yet maintaining a form factor. In one embodiment, a magnetic disk device comprises a magnetic disk; a magnetic head for recording/reproducing information; a magnetic disk drive mechanism for moving magnetic head in the radial direction of the magnetic disk; a housing including a base and a cover having a nonmagnetic material; and a magnetic shielding member having a magnetic material. The housing has a cut-away portion corresponding to a range in which the magnetic head moves, and the magnetic shielding member is formed in a U-shape including an upper wall portion, a side wall portion and a bottom wall portion. The magnetic shielding member covers the range in which the magnetic head moves, and is disposed in the cut-away portion so as to form substantially the same surface as the surfaces of the upper wall, side wall and bottom wall of the housing.

REFERENCES:
patent: 5600509 (1997-02-01), Kawakami
patent: 7251131 (2007-07-01), Shah et al.
patent: 7298583 (2007-11-01), Miyazaki et al.
patent: 2002/0141109 (2002-10-01), Nguy
patent: 2003/0043499 (2003-03-01), Shimomura et al.
patent: 2003-077266 (2003-03-01), None

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