KR930010874A - 자기기록 매체용 적층 폴리에스테르 필름 - Google Patents

자기기록 매체용 적층 폴리에스테르 필름 Download PDF

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Publication number
KR930010874A
KR930010874A KR1019920020904A KR920020904A KR930010874A KR 930010874 A KR930010874 A KR 930010874A KR 1019920020904 A KR1019920020904 A KR 1019920020904A KR 920020904 A KR920020904 A KR 920020904A KR 930010874 A KR930010874 A KR 930010874A
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KR
South Korea
Prior art keywords
polyester film
laminated polyester
surface roughness
magnetic recording
recording media
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KR1019920020904A
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English (en)
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KR100223621B1 (ko
Inventor
도모유끼 고타니
Original Assignee
다니모또 기요시
다이아호일 훽스트 가부시끼가이샤
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Publication of KR930010874A publication Critical patent/KR930010874A/ko
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Publication of KR100223621B1 publication Critical patent/KR100223621B1/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
    • G11B5/73—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
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
    • 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
    • G11B5/62—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
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73931—Two or more layers, at least one layer being polyester
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Landscapes

  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

3층 이상으로 된 자기 기록매체용 적층 폴리에스테르 필름에 있어서, 상하층 각각이 8이상의 모오스 경도와 0.005 내지 0.5μm의 평균 입도를 갖는 무기 입자를 포함하고, 무기 입자의 함량이 각 층의 폴리에스테르 중량을 기준하여 0.25 내지 5중량%이고 중간층을 포함한 모든 층의 폴리에스테르 총량을 기준하여 0.20중량%이하이며, 또 상하층 노출 표면이 특정 조건을 만족하는 마찰계수 및 표면 조도를 갖는 것을 특징으로 하는 자기기록 매체용 적층 폴리에스테르 필름.

Description

자기기록 매체용 적층 폴리에스테르 필름
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실시예에서 미끄럼 특성을 측정하기 의해 사용된 장치의 사시도,
제2도는 실시예에서 내마모성을 측정하기 위해 사용된 장치의 사시도.

Claims (5)

  1. 3층 이상으로 된 자기 기록매체용 적층 폴리에스테르 필름에 있어서, 상하층 각각이 8이상의 모오스 경도와 0.005 내지 0.5㎛의 평균 입도를 갖는 무기 입자를 포함하고, 무기 입자의 함량이 각 층의 폴리에스테르 중량을 기준하여 0.25 내지 5중량%이고 중간층을 포함한 모든 층의 폴리에스테르 총량을 기준하여 0.10중량%이하이며, 또 상하층 노출 표면 이 하기 식(1) 내지 (3)을 만족하는 마찰계 수(μd) 및 표면조도(Ra)를 갖는 것을 특징으로 하는 자기기록 매체용 적층 폴리에스테르 필름: (1) |μdA-μdB≤0.100 (2) (RaA+RaB)/2≤0.030 (3)|RaA+RaB|≤0.010 상기식에서, μdA및 μdB는 각각 상하층 노즐 표면이 마찰계수이고, 또 RaA및 RaB는 각각 상하층 표면조도(μm) 이다.
  2. 제1항에 있어서, 식(1)에 의해 정의된 마찰계수 차가 0.07이하인 적층 폴리에스테르 필름.
  3. 제1항에 있어서, 식(2)에 의해 정의된 상하층의 평균 표면조도가 0.027㎛이하인 적층 폴리에스테르 필름.
  4. 제1항에 있어서. 식(3)에 의해 정의된 표면조도차가 0.003μm인 적층 폴리에스테르 필름.
  5. 제1항에 있어서, 무기 입자의 평균 입도가 0.005 내지 0.3㎛인 적층 폴리에스테르 필름.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920020904A 1991-11-07 1992-11-06 자기기록 매체용 적층 폴리에스테르 필름 KR100223621B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-319994 1991-11-07
JP3319994A JPH05128490A (ja) 1991-11-07 1991-11-07 磁気記録媒体用積層ポリエステルフイルム

Publications (2)

Publication Number Publication Date
KR930010874A true KR930010874A (ko) 1993-06-23
KR100223621B1 KR100223621B1 (ko) 1999-10-15

Family

ID=18116566

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020904A KR100223621B1 (ko) 1991-11-07 1992-11-06 자기기록 매체용 적층 폴리에스테르 필름

Country Status (7)

Country Link
US (1) US5364698A (ko)
EP (1) EP0541072B1 (ko)
JP (1) JPH05128490A (ko)
KR (1) KR100223621B1 (ko)
CA (1) CA2082326A1 (ko)
DE (1) DE69205662T2 (ko)
MX (1) MX9206388A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100262338B1 (ko) * 1998-02-27 2000-09-01 장용균 폴리에스테르 필름의 제조방법

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH076350A (ja) * 1993-06-21 1995-01-10 Diafoil Co Ltd 磁気記録媒体
US5656356A (en) * 1994-01-11 1997-08-12 Teijin Limited Biaxially oriented laminated polyester film
KR960025373A (ko) * 1994-12-12 1996-07-20 하라다 야스오 고밀도 자기기록매체
CA2192695A1 (en) * 1995-04-13 1996-10-17 Masatoshi Aoyama Polyester composition and films produced therefrom
US5998002A (en) * 1995-12-12 1999-12-07 Mitsubishi Polyester Film Corporation High-density magnetic recording medium
KR100515795B1 (ko) * 1998-09-23 2005-11-25 도레이새한 주식회사 이축배향 폴리에스테르 적층필름
DE10231594A1 (de) * 2002-07-12 2004-01-22 Mitsubishi Polyester Film Gmbh Mehrschichtige, metallisierte oder keramisch beschichtete, siegelfähige, biaxial orientierte Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung
DE10231595A1 (de) * 2002-07-12 2004-01-22 Mitsubishi Polyester Film Gmbh Mehrschichtige, transparente, siegelfähige, biaxial orientierte Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung
WO2005106869A1 (ja) * 2004-04-28 2005-11-10 Matsushita Electric Industrial Co., Ltd. 磁気記録媒体とその製造方法、製造装置、記録再生方法、および記録再生装置
JP4864464B2 (ja) * 2006-01-11 2012-02-01 株式会社東芝 磁気抵抗効果素子とその製造方法、およびそれを用いた磁気ヘッドと磁気再生装置と磁気メモリ
US7773348B2 (en) * 2006-03-02 2010-08-10 Hitachi Global Storage Technologies Netherlands B.V. High coercivity hard magnetic seedlayer

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DE3368806D1 (en) * 1982-03-10 1987-02-05 Toray Industries Laminated film and magnetic recording medium made therewith
JPS5931941A (ja) * 1982-08-17 1984-02-21 Konishiroku Photo Ind Co Ltd イメ−ジングカメラの露光制御方法
DE3414347A1 (de) * 1984-04-16 1985-10-24 Hoechst Ag, 6230 Frankfurt Traegerfolie fuer magnetische informationstraeger
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DE3610167A1 (de) * 1986-03-26 1987-10-01 Hoechst Ag Mehrschichtige polyesterfolie fuer magnetische informationstraeger
DE68919130T2 (de) * 1988-06-04 1995-06-01 Diafoil Hoechst Co Ltd Polyesterfilm für magnetische Aufzeichnungsträger.
DE68929156T2 (de) * 1988-06-08 2000-10-19 Toray Industries, Inc. Biaxial orientierte Verbundfolie
JP2856283B2 (ja) * 1989-06-02 1999-02-10 三菱化学ポリエステルフィルム株式会社 二軸配向ポリエステルフィルム
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100262338B1 (ko) * 1998-02-27 2000-09-01 장용균 폴리에스테르 필름의 제조방법

Also Published As

Publication number Publication date
US5364698A (en) 1994-11-15
KR100223621B1 (ko) 1999-10-15
JPH05128490A (ja) 1993-05-25
DE69205662D1 (de) 1995-11-30
EP0541072B1 (en) 1995-10-25
EP0541072A3 (en) 1993-07-14
MX9206388A (es) 1993-05-31
CA2082326A1 (en) 1993-05-08
DE69205662T2 (de) 1996-06-05
EP0541072A2 (en) 1993-05-12

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