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. 16, 2008
Filed:
Jun. 30, 2005
Applicants:
Hiroshi Fukui, Ibaraki, JP;
Masafumi Mochizuki, Tokyo, JP;
Kaori Suzuki, Tokyo, JP;
Inventors:
Assignee:
Hitachi Global Storage Technologies Netherlands B.V., AZ Amsterdam, NL;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/127 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of the invention provide a magnetic head which prevents data on a recording medium from being erased even when a stray field is applied. In one embodiment, an auxiliary pole is sandwiched between a stray-field shield composed of a magnetic layer recessed from the air bearing surface and a main pole. The stray-field shield may be formed on the leading side of the auxiliary pole. A face of the stray-field shield on a medium side may be recessed from an air-bearing-surface of the magnetic head.