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:
Oct. 07, 2003
Filed:
Feb. 22, 2001
Hitoshi Watanabe, Tokyo, JP;
Hiroshi Nishizawa, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A winding is wound directly on the magnetic head core formed of a single crystal of Mn—Zn ferrite. The diameter is 20-30 &mgr;m. A high-saturated magnetic flux density material (iron) having a magnetic flux density which is more than 1.3 T covers walls of the magnetic gap using sputtering. A slider including the magnetic head comprises ceramic including titanium calcium. The magnetic head is adhered to the slider with a low melting point glass. In a magnetic recording apparatus including the above-mentioned magnetic head, the slider includes air bearing surface trains arranged in the driving direction of the magnetic recording medium on a contact surface of the slider. Each bearing surface train includes protruding portions and a hollow portion direction. The hollow portion escapes the air between the protruding portion and the recording medium. The head is evacuated from the magnetic recording medium.