Patent ID: 7576944
Filing Date: 2009-08-18
Classification: G11B

Abstract:
1. A magnetic disk device comprising: a rotary disk-type magnetic disk; a magnetic head for recording information into said magnetic disk and for reproducing information from said magnetic disk; a magnetic disk drive mechanism configured to support said magnetic head and move said magnetic head in the radial direction of said magnetic disk; a housing including a base having a nonmagnetic material and a cover having a nonmagnetic material; and a magnetic shielding member having a magnetic material; wherein said housing has a cut-away portion spanning across an upper wall portion, a side wall portion and a bottom wall portion corresponding only to a range in which the magnetic head moves; and wherein said magnetic shielding member is formed in a U-shape including an upper wall portion, a side wall portion and a bottom wall portion, covers the range in which said magnetic head moves, and is disposed in said cut-away portion so as to form substantially the same surfaces as the surfaces of the upper wall, side wall and bottom wall of the cutaway portion of said housing; wherein the upper wall portion of the shielding member is U-shaped.