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. 12, 1998
Filed:
Sep. 20, 1996
Tetsuo Samoto, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
There are disclosed method and apparatus for producing a magnetic recording medium including a non-magnetic substrate, a magnetic layer formed on one surface of said non-magnetic substrate and a back coat layer formed on an opposite surface of said non-magnetic substrate. By using the method and the apparatus, the magnetic recording medium having the back coat layer, which exhibits a high lubricating property and a low dynamic friction coefficient, can be produced with a high operating efficiency. The method includes the steps of forming the back coat layer by a plasma chemical vapor deposition and supplying a lubricant, substantially at the time when the back coat layer is formed by the plasma chemical vapor deposition, such that the lubricant is introduced into the back coat layer.