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. 07, 1996
Filed:
Apr. 29, 1994
Seiji Kumagai, Miyagi, JP;
Junichi Honda, Miyagi, JP;
Yoshitomo Ito, Miyagi, JP;
Masatoshi Hayakawa, Kanagawa, JP;
Toru Matsunaga, Miyagi, JP;
Mineo Yorizumi, Miyagi, JP;
Yoshito Ikeda, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a magnetic head having a pair of magnetic cores defining a magnetic gap in-between, a side of each magnetic core facing a recording medium is formed of a single-crystal ferrite, with the remaining portions of each magnetic core being formed of poly-crystal ferrite. The surface of the magnetic core facing the recording medium and the abutment surface of the magnetic core are the {100} plane and the {100} plane of the single-crystal ferrite, respectively. The magnetic head has excellent abrasion resistance and electro-magnetic conversion characteristics.