Patent Number: 7,271,974

Title: Method of self servo write with low density gas

Abstract: Embodiments of the invention provide a disk device capable of writing highly accurate servo data using an extremely simple technique, and a manufacturing method therefor. According to one embodiment, a method for manufacturing a disk device includes: mounting a magnetic disk and each assembly for driving the magnetic disk, such as an SPM and a VCM, in a base and attaching a top cover so as to seal the enclosure (made up of the base and the top cover) with each assembly of the HDD therein; replacing the air within the hard disk assembly (HDA) with a gas having a lower density than air, such as He; writing servo data to the magnetic disk in a self servo track write operation; and replacing the gas within the HDA with air.

Inventors: Fukuyama; Hiroshi (Kanagawa, JP), Ishiwata; Kensuke (Kanagawa, JP), Nakao; Kanji (Kanagawa, JP), Takeda; Kazuya (Kanagawa, JP), Washizu; Kazuhiko (Kanagawa, JP)

Assignee: Hitachi Global Storage Technologies Netherlands B.V.

International Classification: G11B 21/02 (20060101); G11B 17/08 (20060101); G11B 33/14 (20060101); G11B 5/596 (20060101)

Expiration Date: 2019-09-18 0:00:00