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:
Jul. 19, 1988
Filed:
Nov. 20, 1986
Yuji Tsukamoto, Tokyo, JP;
Nec Corporation, , JP;
Abstract
Herein is disclosed a magnetic recording member having a high mechanical durability and an improved resistance to wear. The magnetic recording member comprises a substrate, a magnetic layer formed on the surface of the substrate and a first non-magnetic layer of a metal having a low melting point, preferably lower than 400.degree. C. and formed on the magnetic layer, at least the surface of the first non-magnetic layer being oxidized. The magnetic recording member may further contain a lubricant layer. The surface of the magnetic recording member of the invention presents a roughness lower than 25 nm and includes fine protrusions having a linear density higher than 1.times.10.sup.3 /mm. The process for the preparation of the magnetic recording member is also disclosed.