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:
Apr. 14, 1992
Filed:
Mar. 20, 1991
Fuminori Takeya, Nagoya, JP;
NGK Insulators, Ltd., Aichi, JP;
Abstract
A magnetic head slider having an operating surface on which are formed a pair of air-bearing portions extending in a direction of flow of an air stream into a flying height between the head slider and a recording medium, a cross rail extending between the air-bearing portions, and a pressure-reducing portion formed between the air-bearing portions and downstream of the cross rail. The air-bearing portions, cross rail and pressure-reducing portions cooperate to maintain the amount of the flying height at an optimum value. The slider uses a ferrite single crystal which provides at least the operating surface and which have crystal faces oriented such that the (111) plane of the crystal is not a plane which is parallel to the extension of the downstream edge line of the cross rail, or such that the (111) plane is parallel to the extension of the downstream edge line of the cross rail and is inclined at an angle of at least 60.degree. with respect to the operating surface. The operating surface is formed by chemical etching through an etching mask, by using an aqueous phosphoric acid solution.