JPS5774827A - Magnetic recording body - Google Patents

Magnetic recording body

Info

Publication number
JPS5774827A
JPS5774827A JP55151549A JP15154980A JPS5774827A JP S5774827 A JPS5774827 A JP S5774827A JP 55151549 A JP55151549 A JP 55151549A JP 15154980 A JP15154980 A JP 15154980A JP S5774827 A JPS5774827 A JP S5774827A
Authority
JP
Japan
Prior art keywords
layer
magnetic
metal vapor
deposition layer
magnetic recording
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
JP55151549A
Other languages
Japanese (ja)
Inventor
Shigeo Toda
Takashi Wada
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP55151549A priority Critical patent/JPS5774827A/en
Publication of JPS5774827A publication Critical patent/JPS5774827A/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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To prevent curling of a magnetic recording body, and to provide a satisfactory reproducing property and a running property, by forming 4 layers in order of a nonmagnetic metal vapor-deposition layer, an obliquely vapor-deposited metal vapor-deposition layer, a nonmagnetic metal vapor-deposition layer and an obliquely vapor-deposited magnetic metal on a synthetic resin film so that each layer is formed within the ratio of specific thickness. CONSTITUTION:On a synthetic resin film 1, a nonmagnetic metallic layer 2 of Al, etc. is formed to about 50Angstrom at 60-85 deg. incident angle. Subsequently, the first magnetic metal vapor-deposition layer 3 of Co, etc. is laminated on the layer 2 in about 1,000Angstrom , the second nonmagnetic metal vapor-deposition layer 4 is laminated on the layer 3 in about 500Angstrom , and also the second magnetic layer 5 is laminated in about 1,000Angstrom in the same way as the layers 2, 3, by which a magnetic recording medium is obtained. When the ratio of each film thickness of the layers 2-5 is set to (5- 10):100:(10-50):100, the obtained magnetic recording medium cause no curling, contacts with the magnetic head satisfactorily, and such defects as a drop of a reproducing output, a drop of an S/N ratio, unstable running, etc. are removed.
JP55151549A 1980-10-29 1980-10-29 Magnetic recording body Pending JPS5774827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55151549A JPS5774827A (en) 1980-10-29 1980-10-29 Magnetic recording body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151549A JPS5774827A (en) 1980-10-29 1980-10-29 Magnetic recording body

Publications (1)

Publication Number Publication Date
JPS5774827A true JPS5774827A (en) 1982-05-11

Family

ID=15520940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151549A Pending JPS5774827A (en) 1980-10-29 1980-10-29 Magnetic recording body

Country Status (1)

Country Link
JP (1) JPS5774827A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956217A (en) * 1982-09-27 1984-03-31 Nec Corp Vertical magnetic storage medium having magnetic double layer
JPS59173130U (en) * 1983-04-30 1984-11-19 大日本印刷株式会社 magnetic recording medium
FR2584847A1 (en) * 1985-07-15 1987-01-16 Bull Sa MAGNETICALLY ANISOTROPIC PERPENDICULAR RECORDING MEDIUM
JP2001163660A (en) * 1999-09-29 2001-06-19 Taiheiyo Cement Corp Curable composition and cured body
JP2001240456A (en) * 2000-02-29 2001-09-04 Taiheiyo Cement Corp Acid-resistant mortar, grout, concrete and its construction method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956217A (en) * 1982-09-27 1984-03-31 Nec Corp Vertical magnetic storage medium having magnetic double layer
JPS59173130U (en) * 1983-04-30 1984-11-19 大日本印刷株式会社 magnetic recording medium
FR2584847A1 (en) * 1985-07-15 1987-01-16 Bull Sa MAGNETICALLY ANISOTROPIC PERPENDICULAR RECORDING MEDIUM
JP2001163660A (en) * 1999-09-29 2001-06-19 Taiheiyo Cement Corp Curable composition and cured body
JP2001240456A (en) * 2000-02-29 2001-09-04 Taiheiyo Cement Corp Acid-resistant mortar, grout, concrete and its construction method

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