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:
Jun. 07, 2005
Filed:
Dec. 26, 2001
Applicant:
Yoichiro Tanaka, Kawasaki, JP;
Inventor:
Yoichiro Tanaka, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B005/00 ;
U.S. Cl.
CPC ...
Abstract
This invention provides a perpendicular magnetic recording type disk drive comprised of a double-layered disk medium and a magnetic head containing a read head element containing a GMR element. The GMR element has a linear response dynamic range characteristic larger than an average value of a reproduction magnetic field from a disk 101 and a characteristic capable of avoiding or suppressing saturation phenomenon even if it is affected by a strong reproduction magnetic field from the disk medium.