JPS52105804A - Magnetic disc substrate - Google Patents

Magnetic disc substrate

Info

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
Application number
JP2220776A
Other languages
Japanese (ja)
Inventor
Takehiko Sato
Masaki Shinohara
Koichi Makino
Etsufumi Kobayashi
Kazunori Tani
Wakatake Matsuda
Seiji Hattori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP2220776A priority Critical patent/JPS52105804A/en
Publication of JPS52105804A publication Critical patent/JPS52105804A/en
Pending legal-status Critical Current

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
JP2220776A 1976-03-03 1976-03-03 Magnetic disc substrate Pending JPS52105804A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (14)

* Cited by examiner, † Cited by third party
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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