Claims
- 1. A method of manufacturing a magnetic medium comprising the steps of:
- forming a first groove in a substrate by etching;
- forming a second groove in said first groove or in a portion adjacent to said first groove by said etching, the second groove being different in depth from the first groove; and
- burying magnetic substances into said first and second grooves.
- 2. A method of manufacturing a magnetic medium comprising the steps of:
- implanting impurities in a substrate;
- forming a first groove in said substrate by etching a part of the doped impurities;
- forming a second groove by etching only the doped impurities, the second groove being different in depth from the first groove; and
- burying magnetic substances into said first and second grooves.
- 3. A method of manufacturing a magnetic medium as set forth in claim 2, wherein said impurities comprise p-type impurities.
- 4. A method of manufacturing a magnetic medium as set forth in claim 2, wherein said impurities comprise n-type impurities.
Priority Claims (3)
Number |
Date |
Country |
Kind |
3-034935 |
Mar 1991 |
JPX |
|
3-099354 |
May 1991 |
JPX |
|
3-099355 |
May 1991 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/842,057 filed Feb. 26, 1992, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4391849 |
Bischoff |
Jul 1983 |
|
4472240 |
Kameyama |
Sep 1984 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
842057 |
Feb 1992 |
|