JPS5746321A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5746321A
JPS5746321A JP55120560A JP12056080A JPS5746321A JP S5746321 A JPS5746321 A JP S5746321A JP 55120560 A JP55120560 A JP 55120560A JP 12056080 A JP12056080 A JP 12056080A JP S5746321 A JPS5746321 A JP S5746321A
Authority
JP
Japan
Prior art keywords
thin film
metal
recording medium
magnetic recording
nitride
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
JP55120560A
Other languages
Japanese (ja)
Inventor
Kazuo Takada
Toshiaki Izumi
Takanori Kobuke
Hiroshi Sugihara
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP55120560A priority Critical patent/JPS5746321A/en
Publication of JPS5746321A publication Critical patent/JPS5746321A/en
Pending 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
    • G11B5/7358—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2 specially adapted for achieving a specific property, e.g. average roughness [Ra]
    • 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To increase the travelling durability of a magnetic recording medium, by forming a thin film layer composed of a comparatively hard metal or its oxide or nitride on the rear surface of a supporting substrate containing a ferromagnetic thin film laye. CONSTITUTION:A metal such as V, Ti, Zr, Cr, Mn, Mo, W, Fe, Co, Ni, Cu, Rh, Ir, Bi. B, etc or its oxide or nitride having >=4 Mohs' hardness is vapor-deposited on the rear surface of a supporter 1 moving within a vacuum chamber 5 by means of an evaporating crucible 9 to form a thin film layer 3 of the above-menthioned metal or its oxide or nitride. Then a ferromagnetic material is vapor-deposited by an evaporating crucible 10, and at the same time a metal of the >=4 Moh's hardness which is partially mixed into the ferromagnetic material to form a protective layer is vapordeposited by an evaporating crucible 11 respectively. In such way, a magnetic recording medium containing a ferromagnetic thin film layer 2 and a protective layer 4 is obtained.
JP55120560A 1980-08-30 1980-08-30 Magnetic recording medium Pending JPS5746321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55120560A JPS5746321A (en) 1980-08-30 1980-08-30 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120560A JPS5746321A (en) 1980-08-30 1980-08-30 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5746321A true JPS5746321A (en) 1982-03-16

Family

ID=14789324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55120560A Pending JPS5746321A (en) 1980-08-30 1980-08-30 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5746321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300429A (en) * 1987-05-29 1988-12-07 Matsushita Electric Ind Co Ltd Production of magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300429A (en) * 1987-05-29 1988-12-07 Matsushita Electric Ind Co Ltd Production of magnetic recording medium

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