Claims
- 1. A magnetic recording disk comprising:a substrate; a magnetic layer on said substrate; a carbon layer on said magnetic layer; and a lubricating film on said carbon layer; wherein one of said substrate and said carbon layer comprises a texture layer having a surface with fine surface irregularities for reducing friction when the disk is brought into contact with a head and for controlling an amount of lift of the head, said surface irregularities having a height no greater than 20 nm and being formed on said surface of said texture layer using a shield and a high-speed, electrically-neutral atomic beam, said texture layer comprising one of an insulating material and a conducting material having a thin insulating layer.
- 2. The disk of claim 1, wherein said substrate comprises said texture layer and is formed of an aluminum material.
- 3. The disk of claim 1, wherein said substrate comprises said texture layer and is formed of a glass material.
- 4. The disk of claim 1, wherein said substrate is formed of an aluminum material and said carbon layer comprises said texture layer.
- 5. The disk of claim 1, wherein said substrate is formed of a glass material and said carbon layer comprises said texture layer.
- 6. A magnetic recording disk comprising:a substrate formed of an aluminum material; an Ni—P layer on said substrate; a magnetic layer on said Ni—P layer, a carbon layer on said magnetic layer, and a lubricating film on said carbon layer, wherein one of said substrate, said carbon layer, and said Ni—P layer comprises a texture layer having a surface with fine surface irregularities for reducing friction when the disk is brought into contact with a head and for controlling an amount of lift of the head, said surface irregularities having a height no greater than 20 nm and being formed on said surface of said texture layer using a shield and a high-speed, electrically-neutral atomic beam, said texture layer comprising one of an insulating material and a conducting material having a thin insulating layer.
- 7. The disk of claim 6, wherein said Ni—P layer comprises said texture layer.
- 8. The disk of claim 6, wherein said carbon layer comprises said texture layer.
- 9. The disk of claim 6, wherein said carbon layer comprises said texture layer.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-15641 |
Jul 1997 |
JP |
|
2-15642 |
Jul 1997 |
JP |
|
Parent Case Info
Japanese patent applications Nos. 215641 and 215642, filed on Jul. 25, 1997, U.S. Pat. No. 5,640,009, and Japanese laid-open patent publication No. 1993-182787, which serve as a basis for the present application, are incorporated by reference herein.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5887336 |
Watanabe |
Mar 1999 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
08238426 |
Sep 1996 |
JP |
08241884 |
Sep 1996 |
JP |
08238580 |
Sep 1996 |
JP |
08293111 |
Nov 1996 |
JP |