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:
Jul. 28, 2009
Filed:
Jan. 08, 2007
Toshiya Kato, Kawasaki, JP;
Masanori Fukushi, Kawasaki, JP;
Toshiya Kato, Kawasaki, JP;
Masanori Fukushi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
There is provided a servo information recording device having a simple structure, being implementable in lower cost, and capable of writing servo information with high reliability and a servo information recording method. The servo information recording device includes a head swingably supported relative to a predetermined swing axis and a head drive section that swings the head within a predetermined zone in the radial direction of the disk medium. The device also has a controller that controls the head drive section and writes the servo information onto a track of the disk medium. Assuming that R is the outer circumferential radius of the disk medium and P is a distance between the center of the disk medium and pivot (swing axis), the swing axis is disposed at a position at which P/R falls beyond about 1.35.