JPS57143731A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57143731A
JPS57143731A JP56029551A JP2955181A JPS57143731A JP S57143731 A JPS57143731 A JP S57143731A JP 56029551 A JP56029551 A JP 56029551A JP 2955181 A JP2955181 A JP 2955181A JP S57143731 A JPS57143731 A JP S57143731A
Authority
JP
Japan
Prior art keywords
incident angle
magnetic
thin film
base body
low
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
JP56029551A
Other languages
Japanese (ja)
Inventor
Akio Yanai
Ryuji Shirahata
Tatsuji Kitamoto
Kiichiro Yamagishi
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP56029551A priority Critical patent/JPS57143731A/en
Publication of JPS57143731A publication Critical patent/JPS57143731A/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
    • G11B5/674—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 differing macroscopic or microscopic structures, e.g. differing crystalline lattices, varying atomic structures or differing roughnesses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve an electromagnetic conversion characteristic of a magnetic recording medium in the low frequency band, by laminating the first magnetic thin film whose incident angle is varied continuously from low to high, and the second magnetic thin film whose incident angle is varied in reverse, on a base body. CONSTITUTION:The first magnetic thin film 1 having curved and slanting columnar structure 11 is formed by making a flexible base body B run in one direction, and vapor-depositing a magnetic metallic material, continuously increasing an incident angle of a vapor flow to a high incident angle of 45-90 deg. from a low incident angle of 45-90 deg. against a normal of the base body B, from an evaporation source. Subsequently, the second magnetic thin film 2 having curved and slanting columnar structure 12 is laminated by vapor-depositing a magnetic mettalic material, continuously varying the incident angle of the vapor flow to a low incident angle from a high incident angle in the direction being symmetrical to a normal of the base body B. In this way, it is possible to obtain a magnetic recording medium which adheres closely to a base material, is excellent in an abrasion resisting property and a weather resisting property, and has improved a frequency characteristic of a reproducing output.
JP56029551A 1981-03-02 1981-03-02 Magnetic recording medium Pending JPS57143731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56029551A JPS57143731A (en) 1981-03-02 1981-03-02 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56029551A JPS57143731A (en) 1981-03-02 1981-03-02 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57143731A true JPS57143731A (en) 1982-09-06

Family

ID=12279269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56029551A Pending JPS57143731A (en) 1981-03-02 1981-03-02 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57143731A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622271A (en) * 1984-04-20 1986-11-11 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4770924A (en) * 1986-07-02 1988-09-13 Tdk Corporation Magnetic recording medium
US4874664A (en) * 1986-11-21 1989-10-17 Toyota Jidosha Kabushiki Kaisha Birefringent plate and manufacturing method for the same
EP0477641A2 (en) * 1990-09-11 1992-04-01 TDK Corporation Magnetic recording medium for digital recording
EP0516086A2 (en) * 1991-05-30 1992-12-02 Sony Corporation Magnetiic recording medium
US5525398A (en) * 1991-03-22 1996-06-11 Tdk Corporation Perpendicular magnetic recording medium and method for making

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56143519A (en) * 1980-04-08 1981-11-09 Tdk Corp Magnetic recording medium and manufacturing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56143519A (en) * 1980-04-08 1981-11-09 Tdk Corp Magnetic recording medium and manufacturing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622271A (en) * 1984-04-20 1986-11-11 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4770924A (en) * 1986-07-02 1988-09-13 Tdk Corporation Magnetic recording medium
US4874664A (en) * 1986-11-21 1989-10-17 Toyota Jidosha Kabushiki Kaisha Birefringent plate and manufacturing method for the same
EP0477641A2 (en) * 1990-09-11 1992-04-01 TDK Corporation Magnetic recording medium for digital recording
US5525398A (en) * 1991-03-22 1996-06-11 Tdk Corporation Perpendicular magnetic recording medium and method for making
EP0516086A2 (en) * 1991-05-30 1992-12-02 Sony Corporation Magnetiic recording medium

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