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:
Jan. 18, 2000
Filed:
Jul. 18, 1997
Sony Corporation, Tokyo, JP;
Abstract
A magnetic head is provided which realizes long service life and high reliability by improved abrasion resistance without deteriorating output characteristics of the magnetic head during recording/reproduction. In a magnetic head having a pair of magnetic cores which are joined together to form a unified magnetic core and between abutment surfaces of which is formed a magnetic gap, a pair of magnetic cores are each formed by a single-crystal ferrite having a surface perpendicular to the abutment surfaces formed by the (100) plane. One of the magnetic cores is arranged so that an angle .theta. between the <100>crystal orientation in a surface perpendicular to the abutment surfaces and the abutment surfaces is in a range of 0.degree..gtoreq..theta..gtoreq.26.degree., while the other magnetic core is arranged so that an angle .theta. between the <100> crystal orientation in a surface perpendicular to the abutment surfaces and the abutment surfaces is in a range or 154.degree..gtoreq..theta..gtoreq.180.degree..