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:
May. 12, 1998
Filed:
Sep. 13, 1996
Minoru Yamada, Sakae-machi, JP;
Hideyuki Hashimoto, Nagaoka, JP;
Yasuhiro Yabe, Nagaoka, JP;
Kenji Honda, Nagaoka, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A combined-type thin film magnetic head in which a reproducing head portion including a magnetoresistive device and an inductive magnetic head are laminated. A coil support portion made of the same plated layer that forms an upper gap layer of the reproducing head portion having the magnetoresistive device and a lower core portion separated from the magnetic material layer by a gap .delta. are formed on the surface of the upper gap layer. The coil support portion and the lower core portion have areas that enable a coil layer to be formed so that the coil layer is enabled to be formed on a region having no step. An upper core layer is formed on the lower core portion in such a manner that the coil layer is held therebetween. A magnetic gap is formed between the two core layers. Since the magnetic passage of the lower core portion has a small cross sectional area, the inductance of the magnetic circuit can be lowered.