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. 23, 1996
Filed:
Mar. 14, 1994
Yoichiro Tanaka, Kawasaki, JP;
Kazushi Tanimoto, Tokyo, JP;
Hiroshi Ohashi, Tokyo, JP;
Takashi Hikosaka, Tokyo, JP;
Yasuo Ohtsubo, Yokohama, JP;
Shigeru Hoshina, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
According to the present invention, there is provided a magnetic disk memory system. An embodiment of this system comprises a magnetic disk of a perpendicular recording type, including a soft magnetic backing layer and a magnetic recording layer of a perpendicular magnetic anisotropy formed on the backing layer, and a magnetic head for writing or reading of data with respect to the magnetic disk, wherein the magnetic head comprises (a) a pair of main magnetic poles each of which made of a material having a high magnetic permeability, one end of the each pole being located so as to face the magnetic disk surface, (b) a non-magnetic interlayer provided between two main magnetic poles of the pair, (c) a recording coil disposed so as to generate a magnetic flux passing through the magnetic disk via the main magnetic poles, and (d) an MR element provided via an insulation layer on the other ends of the pair of main magnetic poles, one MR element having a film surface parallel to end surfaces of the other ends of the main magnetic poles, and being magnetically coupled with the pair of main magnetic poles.