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. 24, 1984
Filed:
Mar. 16, 1982
Applicant:
Inventors:
Nobutaka Yamaguchi, Kanagawa, JP;
Nobuo Tsuji, Kanagawa, JP;
Yasutoshi Okuzawa, Kanagawa, JP;
Norio Nasu, Kanagawa, JP;
Masaaki Fujiyama, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428340 ; 360134 ; 360135 ; 360136 ; 427128 ; 427131 ; 428447 ; 428694 ; 428695 ; 428900 ;
Abstract
A magnetic recording medium is disclosed which is comprised of a non-magnetic support base having a magnetic layer on one surface and a silicone oil layer formed on the opposite surface. The silicone oil layer does not produce dropouts and eliminates scraping and therefore eliminates dust particles that collect and build up in the area of the magnetic head. The silicone layer is formed from a silicone-containing compound having a viscosity of at least 6,000 centistokes at 25.degree. C.