JPS52105804A - Magnetic disc substrate - Google Patents
Magnetic disc substrateInfo
- Publication number
- JPS52105804A JPS52105804A JP2220776A JP2220776A JPS52105804A JP S52105804 A JPS52105804 A JP S52105804A JP 2220776 A JP2220776 A JP 2220776A JP 2220776 A JP2220776 A JP 2220776A JP S52105804 A JPS52105804 A JP S52105804A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disc
- disc substrate
- substrate
- titanium
- abrasion resistance
- 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)
Abstract
PURPOSE: To provide a magnetic disc substrate, comprising oxide film or nitride film formed on titanium or titanium alloy substrate to improve surface precision characteristic and abrasion resistance.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2220776A JPS52105804A (en) | 1976-03-03 | 1976-03-03 | Magnetic disc substrate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2220776A JPS52105804A (en) | 1976-03-03 | 1976-03-03 | Magnetic disc substrate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52105804A true JPS52105804A (en) | 1977-09-05 |
Family
ID=12076337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2220776A Pending JPS52105804A (en) | 1976-03-03 | 1976-03-03 | Magnetic disc substrate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52105804A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4990362A (en) * | 1989-06-16 | 1991-02-05 | Nkk Corporation | Method of manufacturing a titanium magnetic disk substrate |
EP0445732A2 (en) * | 1990-03-09 | 1991-09-11 | Nkk Corporation | Method of manufacturing titanium magnetic disk substrate |
US5120615A (en) * | 1989-06-16 | 1992-06-09 | Nkk Corporation | Magnetic disk substrate and method of manufacturing the same |
US5188677A (en) * | 1989-06-16 | 1993-02-23 | Nkk Corporation | Method of manufacturing a magnetic disk substrate |
US5221459A (en) * | 1992-02-12 | 1993-06-22 | Nkk Corporation | Method of manufacturing a magnetic disk substrate of titanium |
US5360677A (en) * | 1989-02-23 | 1994-11-01 | Nkk Corporation | Magnetic disk substrate |
US5478657A (en) * | 1993-06-16 | 1995-12-26 | Nkk Corporation | Titanium discs useful for magnetic discs |
US5626920A (en) * | 1991-10-04 | 1997-05-06 | Tulip Memory Systems, Inc. | Method for coating metal disc substrates for magnetic-recording media |
US5707705A (en) * | 1993-09-08 | 1998-01-13 | Tulip Memory Systems, Inc. | Titanium or titanium-alloy substrate for magnetic-recording media |
US5900126A (en) * | 1993-08-02 | 1999-05-04 | Tulip Memory Systems, Inc. | Method for manufacturing austenitic stainless steel substrate for magnetic-recording media |
-
1976
- 1976-03-03 JP JP2220776A patent/JPS52105804A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5360677A (en) * | 1989-02-23 | 1994-11-01 | Nkk Corporation | Magnetic disk substrate |
US5188677A (en) * | 1989-06-16 | 1993-02-23 | Nkk Corporation | Method of manufacturing a magnetic disk substrate |
US5120615A (en) * | 1989-06-16 | 1992-06-09 | Nkk Corporation | Magnetic disk substrate and method of manufacturing the same |
US4990362A (en) * | 1989-06-16 | 1991-02-05 | Nkk Corporation | Method of manufacturing a titanium magnetic disk substrate |
US5131995A (en) * | 1990-03-09 | 1992-07-21 | Nkk Corporation | Method of manufacturing titanium magnetic disk substrate |
EP0445732A2 (en) * | 1990-03-09 | 1991-09-11 | Nkk Corporation | Method of manufacturing titanium magnetic disk substrate |
US5626920A (en) * | 1991-10-04 | 1997-05-06 | Tulip Memory Systems, Inc. | Method for coating metal disc substrates for magnetic-recording media |
US5811182A (en) * | 1991-10-04 | 1998-09-22 | Tulip Memory Systems, Inc. | Magnetic recording medium having a substrate and a titanium nitride underlayer |
US6103367A (en) * | 1991-10-04 | 2000-08-15 | Tulip Memory Systems, Inc. | Coating of metal substrate for magnetic recording medium |
US5221459A (en) * | 1992-02-12 | 1993-06-22 | Nkk Corporation | Method of manufacturing a magnetic disk substrate of titanium |
US5478657A (en) * | 1993-06-16 | 1995-12-26 | Nkk Corporation | Titanium discs useful for magnetic discs |
US5900126A (en) * | 1993-08-02 | 1999-05-04 | Tulip Memory Systems, Inc. | Method for manufacturing austenitic stainless steel substrate for magnetic-recording media |
US5707705A (en) * | 1993-09-08 | 1998-01-13 | Tulip Memory Systems, Inc. | Titanium or titanium-alloy substrate for magnetic-recording media |
US5961792A (en) * | 1993-09-08 | 1999-10-05 | Tulip Memory Systems, Inc. | Method for making titanium or titanium-alloy substrate for magnetic-recording media |
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