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. 08, 1991
Filed:
Oct. 13, 1988
Applicant:
Inventors:
Ryo Fujimoto, Kawasaki, JP;
Katsumi Arisaka, Yokohama, JP;
Takao Sasakura, Yokohama, JP;
Hiroshi Takagi, Yokohama, JP;
Kenji Suzuki, Yokohama, JP;
Akira Shinmi, Yokohama, JP;
Rieko Kanome, Kawasaki, JP;
Morimi Hashimoto, Wako, JP;
Nobuyuki Saito, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium comprises at least a magnetic recording layer of a metal thin film on a substrate, wherein the stiffness 1/k.sub.O [kgfmm] of the whole medium is within the following range: ##EQU1## [n is a number of layers constituting the magnetic recording medium] E.sub.k : Young's modulus of the k th layer [unit:kgf/mm.sup.2 ]