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:
Dec. 18, 2007
Filed:
Sep. 10, 2002
Nobuo Yoshida, Odawara, JP;
Ichiro Oodake, Odawara, JP;
Moriaki Fuyama, Hitachi, JP;
Kazue Kudo, Odawara, JP;
Kimitoshi Etoh, Odawara, JP;
Shigekazu Ohtomo, Sayama, JP;
Hiroshi Fukui, Hitachi, JP;
Nobuo Yoshida, Odawara, JP;
Ichiro Oodake, Odawara, JP;
Moriaki Fuyama, Hitachi, JP;
Kazue Kudo, Odawara, JP;
Kimitoshi Etoh, Odawara, JP;
Shigekazu Ohtomo, Sayama, JP;
Hiroshi Fukui, Hitachi, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara-shi, JP;
Abstract
There is provided a thin film magnetic head, with letting a distance of a portion, where a width of a track portion in an upper magnetic pole changes, from a flying plane from a medium be Ly, and letting a distance of a portion, where a distance between right and left of a surface portion in a lower magnetic pole in a track width direction is wider than the width of the upper magnetic pole in the track width direction, from the flying plane from a medium be Tp, by creating a thin film magnetic head that is equipped with a recording head that has a relation of Tp≦Ly, it becomes possible to reduce a needless leakage magnetic field in the track width direction with securing magnetic field strength.