KR910020662A - 자기 기록매체 - Google Patents

자기 기록매체 Download PDF

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Publication number
KR910020662A
KR910020662A KR1019910007553A KR910007553A KR910020662A KR 910020662 A KR910020662 A KR 910020662A KR 1019910007553 A KR1019910007553 A KR 1019910007553A KR 910007553 A KR910007553 A KR 910007553A KR 910020662 A KR910020662 A KR 910020662A
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KR
South Korea
Prior art keywords
layer
magnetic recording
ferromagnetic metal
deposited
recording medium
Prior art date
Application number
KR1019910007553A
Other languages
English (en)
Other versions
KR940009728B1 (ko
Inventor
미쓰루 다까이
고오지 고바야시
Original Assignee
사또오 히로시
티디케이 가부시끼가이샤
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 사또오 히로시, 티디케이 가부시끼가이샤 filed Critical 사또오 히로시
Publication of KR910020662A publication Critical patent/KR910020662A/ko
Application granted granted Critical
Publication of KR940009728B1 publication Critical patent/KR940009728B1/ko

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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
    • 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
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

내용 없음

Description

자기 기록매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (9)

  1. 비자성 기체의 한 주표면상에 최대치 θmax과 최소치 θmix사이에서 변하는 입사각으로 경사 중착하여 형성된 자성층을 가지며 이 자성층은 적어도 2층의 코발트를 주성분으로 하는 강자성 금속박막을 필수성분으로 하여 이루어지는 자기기록매체로서, 기판에 인접하여 중착된 층과 기판으로부터 떨어져 중착된 층을 각각 최하층과 최상층으로 지정하면 강자성 금속박막의 최하층이 강자성 금속박막의 최상층보다 더 작은 θmax값으로 증착되는 것을 특징으로 하는 자기기록매체.
  2. 제1항에 있어서, 최상층에 대한 강자성 금속의 증착과 관련된 θmax과 θmin의 합계를 최하층과 θmax과 θmin의 합계보다 큰 것을 특징으로 하는 자기기록매체.
  3. 제1항에 있어서, 상기한 적어도 두층은 강자성 금속의 입사방향이 기체표면의 법선의 반대쪽에 서로 교차하도록 증착되는 것을 특징으로 하는 자기기록매체.
  4. 제1항에 있어서, 최상층과 최하층의 증착시의 최소입사각 θmin은 각각 20내지 60°와 10내지 50°이고 최상층과 최하층의 증착시 최대입사각 θmax은 각각 80내지 90°와 31내지 89°인 것을 특징으로 하는 자기기록매체.
  5. 비자성 기체의 한 주표면상에 최대치 θmax와 최소치 θmin사이에 변하는 입사각으로 경사 증착하여 형성된 자성층을 가지며 이 자성층을 적어도 2층의 코발트를 주성분으로 하는 강자성 금속박막을 필수성분으로 하여 이루어지는 자기기록매체로서, 기판에 인접하여 증착된 층과 기판으로부터 떨어져 증착된 층을 각각 최하층과 최상층으로 지정하면 강자성 금속박막의 최상층이 강자성 금속박막의 최하층보다 더 큰 θmin값으로 증착되는 것을 특징으로 하는 자기기록매체.
  6. 제5항에 있어서, 최하층이 최상층보다 더 작은 θmax값으로 증착되는 것을 특징으로 하는 자기기록매체.
  7. 제5항 또는 제6항에 있어서, 최상층에 대한 강자성 금속의 증착과 관련된 θmax과 θmin의 합계를 최하층의 θmax과 θmin의 합계보다 큰 것을 특징으로 하는 자기기록매체.
  8. 제5항 또는 제6항에 있어서, 상기한 적오도 두층은 강자성 금속의 입사방향이 기체표면의 법선의 반대쪽에서 서로 교차하도록 증착되는 것을 특징으로 하는 자기기록매체.
  9. 제5항 또는 제6항에 있어서, 최사층과 최하층의 증착시 최소 입사각 θmin은 각각 20°내지 60°와 10°내지 50°이고 최상층과 최하층의 증착시 최대 입사각 θmax은 각각 80°내지 90°와 31°내지 89°인 것을 특징으로 하는 자기기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910007553A 1990-05-10 1991-05-10 자기 기록매체 KR940009728B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2-120610 1990-05-10
JP2120610A JP2897840B2 (ja) 1990-05-10 1990-05-10 磁気記録媒体

Publications (2)

Publication Number Publication Date
KR910020662A true KR910020662A (ko) 1991-12-20
KR940009728B1 KR940009728B1 (ko) 1994-10-17

Family

ID=14790507

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910007553A KR940009728B1 (ko) 1990-05-10 1991-05-10 자기 기록매체

Country Status (5)

Country Link
US (1) US5225234A (ko)
EP (1) EP0456227B1 (ko)
JP (1) JP2897840B2 (ko)
KR (1) KR940009728B1 (ko)
DE (1) DE69105810T2 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477641A3 (en) * 1990-09-11 1993-05-05 Tdk Corporation Magnetic recording medium for digital recording
US5906880A (en) * 1990-11-30 1999-05-25 Sony Corporation Magnetic recording medium
JP2988188B2 (ja) * 1992-09-09 1999-12-06 松下電器産業株式会社 磁気記録媒体およびその製造方法
US5674637A (en) * 1993-12-28 1997-10-07 Tdk Corporation Magnetic recording medium
US5558945A (en) * 1993-12-28 1996-09-24 Tdk Corporation Magnetic recording medium
US5731068A (en) * 1995-02-24 1998-03-24 Kao Corporation Magnetic recording medium
US5876860A (en) * 1997-12-09 1999-03-02 N.V. Interturbine Thermal barrier coating ceramic structure
JP2004039195A (ja) * 2002-07-08 2004-02-05 Sony Corp 磁気記録媒体

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134317A (en) * 1980-03-25 1981-10-21 Tdk Corp Magnetic recording medium
JPS56143519A (en) * 1980-04-08 1981-11-09 Tdk Corp Magnetic recording medium and manufacturing device
JPS573223A (en) * 1980-06-03 1982-01-08 Tdk Corp Magnetic recording medium
JPS57143730A (en) * 1981-03-02 1982-09-06 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59119534A (ja) * 1982-12-26 1984-07-10 Tdk Corp 磁気記録媒体
US4770924A (en) * 1986-07-02 1988-09-13 Tdk Corporation Magnetic recording medium
JPS6339127A (ja) * 1986-08-04 1988-02-19 Tdk Corp 磁気記録媒体
US4900622A (en) * 1986-09-18 1990-02-13 Tdk Corporation Magnetic recording medium
JPS6453345A (en) * 1987-08-25 1989-03-01 Konishiroku Photo Ind Method and apparatus for producing magnetic recording medium
JPH01205717A (ja) * 1988-02-12 1989-08-18 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPH01205716A (ja) * 1988-02-12 1989-08-18 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPH02108219A (ja) * 1988-10-18 1990-04-20 Matsushita Electric Ind Co Ltd 磁気記録媒体

Also Published As

Publication number Publication date
EP0456227A3 (en) 1992-03-18
JPH0417110A (ja) 1992-01-21
EP0456227A2 (en) 1991-11-13
EP0456227B1 (en) 1994-12-14
DE69105810T2 (de) 1995-07-20
KR940009728B1 (ko) 1994-10-17
DE69105810D1 (de) 1995-01-26
JP2897840B2 (ja) 1999-05-31
US5225234A (en) 1993-07-06

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