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:
Apr. 26, 1988
Filed:
Mar. 25, 1986
Applicant:
Inventors:
Hideaki Kosha, Odawara, JP;
Takahito Miyoshi, Odawara, JP;
Assignee:
Fuji Photo Film Co., Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428328 ; 427128 ; 428694 ; 428323 ; 428900 ;
Abstract
A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, characterized in that said magnetic recording layer contains an acicular inorganic powder which has a Mohs' scale of hardness of not less than 5, a length of not longer than 1.0 .mu.m, a thickness of not thicker than 0.1 .mu.m, and an aspect ratio in the range of 5 to 20.