The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2007
Filed:
Jul. 27, 2005
Hiroshi Fukuyama, Kanagawa, JP;
Kensuke Ishiwata, Kanagawa, JP;
Kanji Nakao, Kanagawa, JP;
Kazuya Takeda, Kanagawa, JP;
Kazuhiko Washizu, Kanagawa, JP;
Hiroshi Fukuyama, Kanagawa, JP;
Kensuke Ishiwata, Kanagawa, JP;
Kanji Nakao, Kanagawa, JP;
Kazuya Takeda, Kanagawa, JP;
Kazuhiko Washizu, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
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.