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. 17, 1995
Filed:
Dec. 02, 1993
Applicant:
Inventors:
Takafumi Yanagita, Hino, JP;
Ryosuke Isobe, Hino, JP;
Assignee:
Konica Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; G11B / ;
U.S. Cl.
CPC ...
428141 ; 428323 ; 428328 ; 428332 ; 428336 ; 428693 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ;
Abstract
A magnetic recording medium comprises a non-magnetic support and provided thereon, in order, a non-magnetic layer containing a non-magnetic powder, and a magnetic layer containing a ferromagnetic metal powder, each layer containing a binder, the crystallite size of the magnetic powder determined according to X-ray measurement being 30 to 120 .ANG. and the dry thickness of the magnetic layer being 0.01 to less than 0.5 .mu.m.