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:
Feb. 06, 2007
Filed:
Aug. 19, 2005
Applicants:
Yosuke Antoku, Tokyo, JP;
Hiroki Matsukuma, Tokyo, JP;
Inventors:
Yosuke Antoku, Tokyo, JP;
Hiroki Matsukuma, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/03 (2006.01); G11B 5/02 (2006.01); G11B 5/09 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic disk drive apparatus includes a magnetic disk with a data region, a magnetic head located in a region of the magnetic disk other than the data region or outside of the magnetic disk before startup of the magnetic disk and loaded on the data region after the startup, and a current supply unit for providing, just after the startup, a dummy write current with a current value lower than a normal write current value to the magnetic head located in the region of the magnetic disk other than the data region or outside of the magnetic disk.