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:
Jul. 08, 2003
Filed:
Jan. 18, 2000
Ichiro Yagi, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic head with an air bearing surface to which an appropriate roughness, a method of manufacturing the same, and a magnetic disk apparatus are provided. A head core part is formed on a base body made of altic formed by dispersing grain titanium carbide into alumina, and then an air bearing surface is formed. Next, plasma oxidation is performed so that a number of protrusions with height of about 5 nm are selectively formed only on the base-body region of the air bearing surface. The protrusions are composed of titanium oxide formed by the exposed portion among titanium carbide grains on the air bearing surface being selectively oxidized. Growth of the protrusions is promoted by applying photoresist on the ABS and removing it before performing plasma oxidation. The magnetic head has no risk of adsorbing a recording medium so that it has excellent CSS.