JPS5220804A - Magnetic memory device and the manufacturing method - Google Patents

Magnetic memory device and the manufacturing method

Info

Publication number
JPS5220804A
JPS5220804A JP50081201A JP8120175A JPS5220804A JP S5220804 A JPS5220804 A JP S5220804A JP 50081201 A JP50081201 A JP 50081201A JP 8120175 A JP8120175 A JP 8120175A JP S5220804 A JPS5220804 A JP S5220804A
Authority
JP
Japan
Prior art keywords
memory device
magnetic memory
manufacturing
cheaply
faults
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.)
Granted
Application number
JP50081201A
Other languages
Japanese (ja)
Other versions
JPS5758731B2 (en
Inventor
Masahiro Yanagisawa
Yoji Suganuma
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 JP50081201A priority Critical patent/JPS5220804A/en
Priority to DE19762629411 priority patent/DE2629411A1/en
Publication of JPS5220804A publication Critical patent/JPS5220804A/en
Priority to US05/844,623 priority patent/US4154875A/en
Priority to US05/924,185 priority patent/US4162350A/en
Publication of JPS5758731B2 publication Critical patent/JPS5758731B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction

Abstract

PURPOSE: To manufacture easily and cheaply magnetic memory device containing a protective film which has superior character without faults of spattering method, by forming specific polysilicate coating.
COPYRIGHT: (C)1977,JPO&Japio
JP50081201A 1975-07-01 1975-07-01 Magnetic memory device and the manufacturing method Granted JPS5220804A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP50081201A JPS5220804A (en) 1975-07-01 1975-07-01 Magnetic memory device and the manufacturing method
DE19762629411 DE2629411A1 (en) 1975-07-01 1976-06-30 Magnetic recording base with protective film - consisting of polysilicate derived from tetrahydroxysilane
US05/844,623 US4154875A (en) 1975-07-01 1977-10-25 Process for manufacturing a magnetic record member
US05/924,185 US4162350A (en) 1975-07-01 1978-07-13 Magnetic record member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50081201A JPS5220804A (en) 1975-07-01 1975-07-01 Magnetic memory device and the manufacturing method

Publications (2)

Publication Number Publication Date
JPS5220804A true JPS5220804A (en) 1977-02-17
JPS5758731B2 JPS5758731B2 (en) 1982-12-10

Family

ID=13739851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50081201A Granted JPS5220804A (en) 1975-07-01 1975-07-01 Magnetic memory device and the manufacturing method

Country Status (2)

Country Link
JP (1) JPS5220804A (en)
DE (1) DE2629411A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794931A (en) * 1980-12-05 1982-06-12 Nec Corp Magnetic storage body
JPS5862823A (en) * 1981-10-08 1983-04-14 Nec Corp Vertical magnetic storage body
US5434728A (en) * 1993-04-27 1995-07-18 Nec Corporation Magnetic storage unit having a magnetic medium coated with lubricant
US5521017A (en) * 1990-11-30 1996-05-28 Nec Corporation Magnetic recording medium
US6083626A (en) * 1992-04-08 2000-07-04 Nec Corporation Magnetic storage member comprising a carbon layer and directly overcoated fluorolubricant layer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923682C2 (en) * 1978-06-13 1983-11-03 Nippon Electric Co., Ltd., Tokyo Magnetic recording medium
DE3212907C2 (en) * 1981-04-06 1985-10-24 Olympus Optical Co., Ltd., Tokio/Tokyo Magnetic tape and process for its manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794931A (en) * 1980-12-05 1982-06-12 Nec Corp Magnetic storage body
JPS5862823A (en) * 1981-10-08 1983-04-14 Nec Corp Vertical magnetic storage body
US5521017A (en) * 1990-11-30 1996-05-28 Nec Corporation Magnetic recording medium
US6083626A (en) * 1992-04-08 2000-07-04 Nec Corporation Magnetic storage member comprising a carbon layer and directly overcoated fluorolubricant layer
US5434728A (en) * 1993-04-27 1995-07-18 Nec Corporation Magnetic storage unit having a magnetic medium coated with lubricant

Also Published As

Publication number Publication date
DE2629411A1 (en) 1977-01-27
JPS5758731B2 (en) 1982-12-10

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