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:
May. 31, 1994
Filed:
Jun. 01, 1993
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428323 ; 428336 ; 428447 ; 4286 / ; 4286 / ; 428900 ; 4286 / ;
Abstract
A magnetic recording medium comprising a nonmagnetic support and at least two magnetic layers on the support, each magnetic layer containing a ferromagnetic powder and a binder, wherein the lower magnetic layer comprises at least one layer containing a branched fatty acid-modified silicone, but not carbon black, and the upper magnetic layer comprises at least one layer containing a branched fatty acid-modified silicone and carbon black having a DBP absorption oil amount of 100 to 250 ml/100 g. The magnetic recording medium has improved lubricating characteristics.