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:
Jun. 14, 2011
Filed:
Mar. 08, 2007
Katsuki Kurihara, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
Provided is a thin-film magnetic head having a heating element in which excessive increase in temperature is suppressed corresponding to smaller area of the shield layers of the MR effect element. The thin-film magnetic head comprises: an electromagnetic coil element; an MR effect element having two shield layers sandwiching an MR effect multilayer; and a heating element having a heating layer provided at least between the electromagnetic coil element and the MR effect element, and further in the head, at least a portion of a run-off portion of the heating layer running off the shield layer closer to the heating layer than the other shield layer has a resistance per unit length smaller than a resistance per unit length of the other portions than the portion running off the shield layer.