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. 23, 1979
Filed:
Nov. 04, 1977
Applicant:
Inventors:
Masaaki Suzuki, Odawara, JP;
Ryuji Shirahata, Odawara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C23C / ; G11B / ;
U.S. Cl.
CPC ...
428216 ; 360131 ; 360134 ; 360135 ; 360136 ; 427 12 ; 427131 ; 427132 ; 427250 ; 428900 ; 428469 ;
Abstract
This invention relates to a magnetic recording medium which comprises a non-magnetic support, at least one magnetic recording layer containing a magnetic powder and a binder and being provided on the support and a ferromagnetic metal thin film with a thickness of at most 1 micron, being provided on the magnetic recording layer by an oblique incidence vapor deposition method with an electric field. This multi-layer magnetic recording medium exhibits various excellent magnetic recording performances.