JPS5778627A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5778627A
JPS5778627A JP55153821A JP15382180A JPS5778627A JP S5778627 A JPS5778627 A JP S5778627A JP 55153821 A JP55153821 A JP 55153821A JP 15382180 A JP15382180 A JP 15382180A JP S5778627 A JPS5778627 A JP S5778627A
Authority
JP
Japan
Prior art keywords
thin film
metallic thin
film
base film
recording medium
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
JP55153821A
Other languages
Japanese (ja)
Inventor
Sadao Kadokura
Takashi Tomie
Kazuhiko Honjo
Shigenobu Sobajima
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP55153821A priority Critical patent/JPS5778627A/en
Publication of JPS5778627A publication Critical patent/JPS5778627A/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)

Abstract

PURPOSE:To prevent generation of curl, transfer and static electricity, by providing an auxiliary metallic thin film layer having low coercive force, on the opposite side of a magnetic metallic thin film of a base film. CONSTITUTION:On one surface of a base film 1b consisting of a flexible high polymer film, etc., a magnetic metallic thin film 1a consisting of a Co-Cr alloy, etc. for vertical magnetization recording is provided by means of vapor deposition, sputtering, ion plating, etc., and also an auxiliary metallic thin film 1c having low coercive force, consisting of a permalloy layer, etc. is provided on the opposite side of the base film 1b.
JP55153821A 1980-11-04 1980-11-04 Magnetic recording medium Pending JPS5778627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153821A JPS5778627A (en) 1980-11-04 1980-11-04 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153821A JPS5778627A (en) 1980-11-04 1980-11-04 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5778627A true JPS5778627A (en) 1982-05-17

Family

ID=15570821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153821A Pending JPS5778627A (en) 1980-11-04 1980-11-04 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5778627A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770924A (en) * 1986-07-02 1988-09-13 Tdk Corporation Magnetic recording medium
US4801481A (en) * 1982-06-25 1989-01-31 Tokyo Shibaura Denki Kabushiki Kaisha Perpendicular magnetic recording floppy disk
JPH01251317A (en) * 1988-03-30 1989-10-06 Matsushita Electric Ind Co Ltd Magnetic recording medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389705A (en) * 1977-01-18 1978-08-07 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5474706A (en) * 1977-11-28 1979-06-15 Teijin Ltd Base film for magnetically recording
JPS551651A (en) * 1978-06-19 1980-01-08 Matsushita Electric Ind Co Ltd Magnetic recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389705A (en) * 1977-01-18 1978-08-07 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5474706A (en) * 1977-11-28 1979-06-15 Teijin Ltd Base film for magnetically recording
JPS551651A (en) * 1978-06-19 1980-01-08 Matsushita Electric Ind Co Ltd Magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801481A (en) * 1982-06-25 1989-01-31 Tokyo Shibaura Denki Kabushiki Kaisha Perpendicular magnetic recording floppy disk
US4770924A (en) * 1986-07-02 1988-09-13 Tdk Corporation Magnetic recording medium
JPH01251317A (en) * 1988-03-30 1989-10-06 Matsushita Electric Ind Co Ltd Magnetic recording medium

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