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:
Jan. 13, 2009
Filed:
Feb. 10, 2004
Applicants:
Masafumi Mochizuki, Kokubunji, JP;
Tomohiro Okada, Enschede, NL;
Atsushi Nakamura, Kodaira, JP;
Inventors:
Assignee:
Hitachi Global Storage Technologies, LTD., Odawara-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/187 (2006.01);
U.S. Cl.
CPC ...
Abstract
On the trailing side of a main pole air bearing surface of a magnetic head for perpendicular recording, the central portion is formed closer to the leading side than the corners on the trailing side, such that the main pole air bearing surface is formed in the shape of a recess with respect to the tailing side. As a result, it is possible to linearize the magnetic field distribution on the trailing side whereby the magnetic reversal is determined, and to record a bit without curving the shape of magnetic reversal.