JPS6414723A - Substrate for magnetic disk and its production - Google Patents
Substrate for magnetic disk and its productionInfo
- Publication number
- JPS6414723A JPS6414723A JP16869687A JP16869687A JPS6414723A JP S6414723 A JPS6414723 A JP S6414723A JP 16869687 A JP16869687 A JP 16869687A JP 16869687 A JP16869687 A JP 16869687A JP S6414723 A JPS6414723 A JP S6414723A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- directional
- ruggedness
- magnetic
- substrate surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To enable high-density magnetic recording by forming a satin-like rough surface of a prescribed range by surface roughness consisting of non- directional rugged parts having nearly an equal size. CONSTITUTION:Ni-P alloy plating is formed on a base material constituting a substrate for magnetic disks and this plating surface is flatly polished to produce the nonmagnetic substrate for magnetic disks. Hard particles for working are blown together with a pressurized gas on this flat substrate surface, by which the fine non-directional ruggedness is formed over a part of the entire part of the flat substrate surface. The substrate surface formed with the fine ruggedness is further subjected to polishing or cutting to form the substrate having the satin-like rough surface formed with the nearly equal non-directional ruggedness on a part or the entire part of the substrate surface. The stabilization to the lower floating up of a magnetic head with high-density magnetic recording is thereby obtd. and the attraction between the magnetic disk and the magnetic head is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16869687A JPS6414723A (en) | 1987-07-08 | 1987-07-08 | Substrate for magnetic disk and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16869687A JPS6414723A (en) | 1987-07-08 | 1987-07-08 | Substrate for magnetic disk and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6414723A true JPS6414723A (en) | 1989-01-18 |
Family
ID=15872767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16869687A Pending JPS6414723A (en) | 1987-07-08 | 1987-07-08 | Substrate for magnetic disk and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6414723A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03147518A (en) * | 1989-11-02 | 1991-06-24 | Internatl Business Mach Corp <Ibm> | Finishing method and apparatus for magnetic disc |
US6171676B1 (en) | 1996-03-19 | 2001-01-09 | Fujitsu Limited | Magnetic recording medium containing fine magnetic crystal grains and its manufacture |
-
1987
- 1987-07-08 JP JP16869687A patent/JPS6414723A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03147518A (en) * | 1989-11-02 | 1991-06-24 | Internatl Business Mach Corp <Ibm> | Finishing method and apparatus for magnetic disc |
US6171676B1 (en) | 1996-03-19 | 2001-01-09 | Fujitsu Limited | Magnetic recording medium containing fine magnetic crystal grains and its manufacture |
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