JPS54162508A - Magnetic memory medium - Google Patents

Magnetic memory medium

Info

Publication number
JPS54162508A
JPS54162508A JP7191578A JP7191578A JPS54162508A JP S54162508 A JPS54162508 A JP S54162508A JP 7191578 A JP7191578 A JP 7191578A JP 7191578 A JP7191578 A JP 7191578A JP S54162508 A JPS54162508 A JP S54162508A
Authority
JP
Japan
Prior art keywords
film
medium
covered
magnetic thin
metal magnetic
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
JP7191578A
Other languages
Japanese (ja)
Inventor
Masahiro Yanagisawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7191578A priority Critical patent/JPS54162508A/en
Priority to DE2923682A priority patent/DE2923682C2/en
Priority to US06/047,916 priority patent/US4307156A/en
Publication of JPS54162508A publication Critical patent/JPS54162508A/en
Pending legal-status Critical Current

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  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To enable the protecting film to protect the metal magnetic thin film medium much better by providing a formation treatment film between the metal magnetic thin film medium and the protection film composed of inorganic high polymer compound.
CONSTITUTION: A non-magnetic alloy layer 2 is covered by plating on an alloy disc 1 having been finished to have surfaces having sufficiently small undulations and is finished to a mirror surface of less than 0.2μm in surface roughness. On this is covered by plating a metal magnetic thin film medium 3 for high density recording. Next, the disc 1 is dipped in a chromic acid solution, whereby the formation treatment film 4 composed of the oxide or Cr oxide of the medium 3 is formed. A film 5 composed of inorganic high polymer compound such as polysilicic acid containing or not containing a stress releaving agent such as silane coupling agent is provided on such film 4 and further an orientative lubricating agent 6 such as alkoxysilane fluoride is covered thereon.
COPYRIGHT: (C)1979,JPO&Japio
JP7191578A 1978-06-13 1978-06-13 Magnetic memory medium Pending JPS54162508A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7191578A JPS54162508A (en) 1978-06-13 1978-06-13 Magnetic memory medium
DE2923682A DE2923682C2 (en) 1978-06-13 1979-06-12 Magnetic recording medium
US06/047,916 US4307156A (en) 1978-06-13 1979-06-12 Magnetic record member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7191578A JPS54162508A (en) 1978-06-13 1978-06-13 Magnetic memory medium

Publications (1)

Publication Number Publication Date
JPS54162508A true JPS54162508A (en) 1979-12-24

Family

ID=13474303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7191578A Pending JPS54162508A (en) 1978-06-13 1978-06-13 Magnetic memory medium

Country Status (1)

Country Link
JP (1) JPS54162508A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164430A (en) * 1981-04-01 1982-10-09 Hitachi Ltd Magnetic recording medium
JPS57186230A (en) * 1981-05-13 1982-11-16 Matsushita Electric Ind Co Ltd Metallic thin film type magnetic recording medium and its manufacture
JPS5862823A (en) * 1981-10-08 1983-04-14 Nec Corp Vertical magnetic storage body
JPS60101715A (en) * 1983-11-05 1985-06-05 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc medium
JPS63119019A (en) * 1987-10-02 1988-05-23 Fujitsu Ltd Magnetic disk medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164430A (en) * 1981-04-01 1982-10-09 Hitachi Ltd Magnetic recording medium
JPS57186230A (en) * 1981-05-13 1982-11-16 Matsushita Electric Ind Co Ltd Metallic thin film type magnetic recording medium and its manufacture
JPH0325848B2 (en) * 1981-05-13 1991-04-09 Matsushita Electric Ind Co Ltd
JPS5862823A (en) * 1981-10-08 1983-04-14 Nec Corp Vertical magnetic storage body
JPS60101715A (en) * 1983-11-05 1985-06-05 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc medium
JPS63119019A (en) * 1987-10-02 1988-05-23 Fujitsu Ltd Magnetic disk medium
JPH0311004B2 (en) * 1987-10-02 1991-02-15 Fujitsu Ltd

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