KR970063057A - 자기 디스크 - Google Patents

자기 디스크 Download PDF

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Publication number
KR970063057A
KR970063057A KR1019970006848A KR19970006848A KR970063057A KR 970063057 A KR970063057 A KR 970063057A KR 1019970006848 A KR1019970006848 A KR 1019970006848A KR 19970006848 A KR19970006848 A KR 19970006848A KR 970063057 A KR970063057 A KR 970063057A
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KR
South Korea
Prior art keywords
magnetic disk
magnetic
nonmagnetic substrate
thickness
less
Prior art date
Application number
KR1019970006848A
Other languages
English (en)
Other versions
KR100449848B1 (ko
Inventor
히로시 우찌야마
수수무 하가
Original Assignee
이데이 노부유끼
소니 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.)
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Publication date
Application filed by 이데이 노부유끼, 소니 가부시끼가이샤 filed Critical 이데이 노부유끼
Publication of KR970063057A publication Critical patent/KR970063057A/ko
Application granted granted Critical
Publication of KR100449848B1 publication Critical patent/KR100449848B1/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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • 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
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

트랙 밀도가 증가될 때 우수한 오프 트랙 특성 및 높은 보자력을 갖는 자기 디스크가 제공된다. 이 자기 디스크는 서보 신호와 같은 정보가 요철 패턴에 의해 형성된 비자성 기판, 및 이 비자성 기판 상에 형성된 금속 자성막을 포함한다. 이 금속 자성막의 두께는 50㎚ 이하이다. 비자성 기판 및 금속 자성막 사이에 제1하도층 및 제2하도층으로 구성된 하도층이 형성된다. 제1하도층은 C, Si 및 Ge 중 어느 하나로 이루어지고, 제2하도층은 Cr을 주성분으로 하여 이루어진다. 제1하도층의 두께는 2 내지 80㎚이고, 제2하도층의 두께는 5 내지 108㎚이다.

Description

자기 디스크
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 실시 태양의 자기 디스크의 필수 부분을 보여주는 개략적인 단면도.
제6도는 하도층, 금속 자성막 및 보호층을 형성하기 위한 인-라인형 스퍼터링장치를 보여주는 모델도.
제7a도는 인덕티브(inductive) 헤드가 기록용이고, MR 헤드가 재생용인 복합형 자기 헤드를 보여주는 모델도.
제7b도는 자기 헤드의 활동(sliding)면으로부터 본 복합형 자기 헤드의 확대도.

Claims (12)

  1. 적어도 서보(servo) 신호가 요철 패턴에 의해 형성된 비자성 기판 및 이 비자성 기판 상에 형성된 두께 50㎚ 이하의 금속 자성막으로 이루어지는 자기 디스크.
  2. 제1항에 있어서, 상기 금속 자성막이 Co-Pt계 합금 또는 Co-Pd계 합금으로 이루어진 것이 자기 디스크.
  3. 제2항에 있어서 상기 금속 자성막이 Co-Pt-Cr계 합금 또는 Co-Pd-Cr계 합금으로 이루어진 것인 자기 디스크.
  4. 제2항에 있어서, 상기 금속 자성막이 Pt 함량이 16원자% 이상인 Co-Pt계 합금 또는 Co-Pt-Cr계 합금으로 이루어진 것인 자기 디스크.
  5. 제4항에 있어서, 상기 비자성 기판이 유리 전이 온도 120℃ 이하의 플라스틱 재료로 이루어진 것인 자기 디스크.
  6. 제1항에 있어서, 상기 비자성 기판이 표면 조도 Rs가 2㎚ 이하이고, 표면 조도 Rmax가 25㎚ 이하인 자기 디스크.
  7. 적어도 서보 신호가 요철 패턴에 의해 형성된 비자성 기판, 이 비자성 기판상에 형성된 두께 50㎚ 이하의 하도층, 및 이 하도층 상에 형성된 금속 자성막으로 이루어진 자기 디스크.
  8. 제7항에 있어서, 상기 금속 자성막의 두께가 50㎚ 이하인 자기 디스크.
  9. 제7항에 있어서, 상기 하도층이 C, Si 및 Ge 중 어느 하나로 이루어진 제1하도층, 및 Cr을 주성분으로 하는 제2하도층으로 이루어지는 것인 자기 디스크.
  10. 제9항에 있어서, 상기 제1하도층의 두께가 2 내지 80㎚인 자기 디스크.
  11. 제9항에 있어서, 상기 제2하도층의 두께가 5 내지 108㎚인 자기 디스크.
  12. 제7항에 있어서, 상기 비자성 기판인 유리 전이 온도 120℃ 이하의 플라스틱 재료로 이루어진 것인 자기 디스크.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970006848A 1996-02-29 1997-02-28 자기디스크 KR100449848B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4381196 1996-02-29
JP96-043811 1996-02-29

Publications (2)

Publication Number Publication Date
KR970063057A true KR970063057A (ko) 1997-09-12
KR100449848B1 KR100449848B1 (ko) 2004-12-03

Family

ID=12674134

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970006848A KR100449848B1 (ko) 1996-02-29 1997-02-28 자기디스크

Country Status (3)

Country Link
US (1) US6042927A (ko)
KR (1) KR100449848B1 (ko)
CN (1) CN1091920C (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6703099B2 (en) 2000-07-27 2004-03-09 Seagate Technology Llc Perpendicular magnetic recording media with patterned soft magnetic underlayer
JP2003242621A (ja) * 2002-02-18 2003-08-29 Sony Corp 磁気記録媒体
JP4111276B2 (ja) * 2004-02-26 2008-07-02 Ｔｄｋ株式会社 磁気記録媒体及び磁気記録再生装置
JP4231007B2 (ja) * 2005-02-07 2009-02-25 富士通株式会社 磁気媒体の製造方法および磁気媒体製造用金型
JP2007035164A (ja) * 2005-07-27 2007-02-08 Toshiba Corp 凹凸パターン基板およびその製造方法、磁気記録媒体、ならびに磁気記録装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363844A (en) * 1980-09-22 1982-12-14 Lewis Terry W Metallized information carrying discs
JPS60191432A (ja) * 1984-03-12 1985-09-28 Nippon Telegr & Teleph Corp <Ntt> 磁気デイスクおよびその潤滑方法
JPH05114127A (ja) * 1991-10-23 1993-05-07 Hitachi Ltd 磁気デイスク及びその製造方法並びに磁気デイスク装置
US5750230A (en) * 1992-11-20 1998-05-12 Hitachi, Ltd. Magnetic recording media and magnetic recording system using the same
JPH07121863A (ja) * 1993-10-20 1995-05-12 Sony Corp 磁気ディスク

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Publication number Publication date
CN1164090A (zh) 1997-11-05
CN1091920C (zh) 2002-10-02
KR100449848B1 (ko) 2004-12-03
US6042927A (en) 2000-03-28

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