Claims
- 1. A magnetic recording medium in which a thin film magnetic layer of metal or metal ally is present between a non-magnetic support and a protection layer of carbon, wherein material consisting of Al, having an island structure discontinuous in the direction within a plane at the inner surface of the non-magnetic support is formed such that pits are formed on the surface of said protection layer, and a layer of Ti and a magnetic film underlaying layer are disposed between the surface of said non-magnetic support formed with said material and said magnetic layer, said material forming pits and covering at a covering rate from 10 to 85% on said non-magnetic support, average roughness of said material forming pits ranging from 2 to 8 mm, said non-magnetic support comprising a float glass having a soda lime composition.
Priority Claims (2)
Number |
Date |
Country |
Kind |
1-128339 |
May 1989 |
JPX |
|
2-113744 |
Apr 1990 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 08/014,199, filed Feb. 5, 1993 now abandoned which is a continuation of application Ser. No. 527,077, filed May 22, 1990 now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (6)
Number |
Date |
Country |
49-122707 |
Nov 1974 |
JPX |
62-103823 |
May 1987 |
JPX |
62-112774 |
May 1987 |
JPX |
62-256215 |
Nov 1987 |
JPX |
63-160010 |
Jul 1988 |
JPX |
63-160014 |
Jul 1988 |
JPX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
14199 |
Feb 1993 |
|
Parent |
527077 |
May 1990 |
|