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. 31, 1989
Filed:
Feb. 18, 1986
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G11B / ;
U.S. Cl.
CPC ...
428216 ; 428408 ; 428522 ; 428699 ; 4289088 ; 428457 ; 428426 ; 427 42 ; 427122 ;
Abstract
A hard carbon film (12) is formed by ion-beam sputtering on a surface of a substrate (11) such as glass lens or metal sheet of a magnetic disk or a plastic film of a magnetic video tape, by selecting the direction of the ion-beam in the sputtering process to be parallel with surface of the substrate (11) of a magnetic disk, and subsequently theroen a lubricative film (13), such as ZnS.sub.2 is formed also by ion-beam sputtering.