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. 17, 2013
Filed:
Dec. 10, 2010
Kazue Kudo, Odawara, JP;
Hiromi Shiina, Hitachi, JP;
Yohji Maruyama, Iruma, JP;
Shouji Tokutake, Odawara, JP;
Tetsuya Okai, Hadano, JP;
Kazue Kudo, Odawara, JP;
Hiromi Shiina, Hitachi, JP;
Yohji Maruyama, Iruma, JP;
Shouji Tokutake, Odawara, JP;
Tetsuya Okai, Hadano, JP;
HGST Netherlands B.V., Amsterdam, NL;
Abstract
According to one embodiment, a magnetic head for perpendicular recording includes a main pole, a first soft magnetic film disposed on a trailing side of the main pole, and a first nonmagnetic film interposed between the main pole and the first soft magnetic film. A thickness of the main pole is increased in a depth direction from an air bearing surface using an inclination, and a thickness of the first nonmagnetic film increases in the depth direction from the air bearing surface. In another embodiment, an angle from a horizontal plane of an upper surface of the first nonmagnetic film is greater than an angle from a horizontal plane of a lower surface of the first nonmagnetic film in contact with the main pole. Other heads, methods, and systems are described according to more embodiments.