JPS57181428A - Magnetic recording medium and its manufacture - Google Patents

Magnetic recording medium and its manufacture

Info

Publication number
JPS57181428A
JPS57181428A JP56066688A JP6668881A JPS57181428A JP S57181428 A JPS57181428 A JP S57181428A JP 56066688 A JP56066688 A JP 56066688A JP 6668881 A JP6668881 A JP 6668881A JP S57181428 A JPS57181428 A JP S57181428A
Authority
JP
Japan
Prior art keywords
layer
boron
base
recording medium
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.)
Granted
Application number
JP56066688A
Other languages
Japanese (ja)
Other versions
JPH0310163B2 (en
Inventor
Tsunemi Oiwa
Osamu Kitagami
Hideaki Niimi
Kunio Wakai
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP56066688A priority Critical patent/JPS57181428A/en
Publication of JPS57181428A publication Critical patent/JPS57181428A/en
Publication of JPH0310163B2 publication Critical patent/JPH0310163B2/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 obtain a magnetic recording medium with excellent wear resistance and durability, by providing a ferromagnetic metallic thin film layer made of a metal or alloy on a base and forming a boron (B) thin film nitrided for a part or all on the layer as a protective layer. CONSTITUTION:A base 10 such as a polyester base film vacuum-deposited with a metal such as Co and Ni or a ferromagnetic alloy such as Co-Ni-P is set to a base 2 in a vacuum tank 1 with a magnetic substance layer faced to a lower side. Gaseous N2 is introduced from an introducing pipe 8, boron 6 in a hearth 3 is heated with a thermal electron source 9 to generate boron vapor, and a BN layer is formed in 300-500Angstrom thickness on a magnetic layer by a high frequency coil 4 and its electrode 5 through ion plating. Or after forming the boron thin film in 100-500Angstrom thickness on the magnetic layer, N ions are injected to a B layer to form the surface layer of BN of 30-500Angstrom thickness. Thus, the BN layer is formed as a protective layer to obtain a magnetic recording medium with less friction coefficient, long still life and longer life.
JP56066688A 1981-04-30 1981-04-30 Magnetic recording medium and its manufacture Granted JPS57181428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066688A JPS57181428A (en) 1981-04-30 1981-04-30 Magnetic recording medium and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066688A JPS57181428A (en) 1981-04-30 1981-04-30 Magnetic recording medium and its manufacture

Publications (2)

Publication Number Publication Date
JPS57181428A true JPS57181428A (en) 1982-11-08
JPH0310163B2 JPH0310163B2 (en) 1991-02-13

Family

ID=13323115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066688A Granted JPS57181428A (en) 1981-04-30 1981-04-30 Magnetic recording medium and its manufacture

Country Status (1)

Country Link
JP (1) JPS57181428A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133627A (en) * 1982-02-01 1983-08-09 Seiko Epson Corp Magnetic recording medium
JPS58164030A (en) * 1982-03-25 1983-09-28 Tdk Corp Magnetic recording medium
JPS5968821A (en) * 1982-10-12 1984-04-18 Tdk Corp Magnetic recording medium
JPH03259417A (en) * 1990-11-30 1991-11-19 Tdk Corp Magnetic recording medium
JP2006198667A (en) * 2005-01-24 2006-08-03 Amada Co Ltd Forming die for punch press and forming method in punch press
JP2009283036A (en) * 2008-05-20 2009-12-03 Hoya Corp Method of manufacturing magnetic recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340505A (en) * 1976-09-25 1978-04-13 Matsushita Electric Ind Co Ltd Magnetic recordinf medium
JPS54143111A (en) * 1978-04-27 1979-11-08 Matsushita Electric Ind Co Ltd Magnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340505A (en) * 1976-09-25 1978-04-13 Matsushita Electric Ind Co Ltd Magnetic recordinf medium
JPS54143111A (en) * 1978-04-27 1979-11-08 Matsushita Electric Ind Co Ltd Magnetic recording medium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133627A (en) * 1982-02-01 1983-08-09 Seiko Epson Corp Magnetic recording medium
JPH053050B2 (en) * 1982-02-01 1993-01-13 Seiko Epson Corp
JPS58164030A (en) * 1982-03-25 1983-09-28 Tdk Corp Magnetic recording medium
JPH0355887B2 (en) * 1982-03-25 1991-08-26
JPS5968821A (en) * 1982-10-12 1984-04-18 Tdk Corp Magnetic recording medium
JPH03259417A (en) * 1990-11-30 1991-11-19 Tdk Corp Magnetic recording medium
JP2006198667A (en) * 2005-01-24 2006-08-03 Amada Co Ltd Forming die for punch press and forming method in punch press
JP2009283036A (en) * 2008-05-20 2009-12-03 Hoya Corp Method of manufacturing magnetic recording medium

Also Published As

Publication number Publication date
JPH0310163B2 (en) 1991-02-13

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