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:
Nov. 10, 1992
Filed:
Jun. 24, 1991
Applicant:
Inventors:
Rieko Ren, Hino, JP;
Akira Kawakami, Hino, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428212 ; 4284259 ; 428694 ; 427128 ;
Abstract
A magnetic recording medium is disclosed which is improved in the durability thereof. The recording medium has a support and plurality of magnetic layers formed thereon, which layers contain a ferromagnetic powder and binder. A bending stiffness of the medium is 150 to 450 mg and a difference in the bending stiffness between the medium and the medium without its uppermost magnetic layer is not more than 20 mg per 1 .mu.m of thickness of the uppermost layer.