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. 13, 1998
Filed:
Nov. 07, 1995
Takayuki Nakakawaji, Kitaibaraki, JP;
Shuji Imazeki, Hitachi, JP;
Yutaka Ito, Takahagi, JP;
Yuko Morita, Tsuchiura, JP;
Mitsuyoshi Shouji, Juou-machi, JP;
Hisashi Morooka, Hitachi, JP;
Heigo Ishihara, Hinode-machi, JP;
Hiroyuki Matsumoto, Chigasaki, JP;
Tetsuya Hamaguchi, Chiyoda-machi, JP;
Hiroshi Sasaki, Tokai-mura, JP;
Tomoyuki Hamada, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention is aimed at providing a magnetic disk and a magnetic disk apparatus both of which have a high performance lubricating film which makes continuous sliding endurance and low adhesiveness compatible, and a lubricating film having a self repairing function which makes it possible to recombine scratched off lubricating agent from the magnetic disk surface by sliding with a head onto the magnetic disk surface. The lubricating film comprises at least two kinds of lubricating agents each of which forms an individual layer, the layers being laminated. An adhesion enhancing layer is formed between a magnetic film and a lubricating agent at the surface of the magnetic disk, and the adhesion enhancing layer is fixed onto the magnetic film surface. Then, the adhesion enhancing layer and the lubricating agent are combined. The adhesion enhancing layer and the lubricating agent form a salt or complex body, and the lubricating agent can repeat adsorption and desorption with the adhesion enhancing layer reversely by a thermal reaction.