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:
Jul. 03, 2007
Filed:
Mar. 02, 2005
Hiraku Hirabayashi, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
Taro Oike, Tokyo, JP;
Shin Narushima, Tokyo, JP;
Takamitsu Sakamoto, Tokyo, JP;
Hiraku Hirabayashi, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
Taro Oike, Tokyo, JP;
Shin Narushima, Tokyo, JP;
Takamitsu Sakamoto, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A thin film magnetic head is provided to reduce excess magnetostatic leakage field in order to generate a sufficient recording magnetic field. The pole end portion has a width to define a recording track width. The pole rear portion has one end which is magnetically connected with the pole end portion at or in the vicinity of an edge portion of an insulating film and defines a first flare point, the other end which is connected with the upper yoke portion and defines a second flare point, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point toward the first flare point. The width of the pole end portion at the first flare point is smaller than the maximum width of the pole rear portion.