KR930003030A - 고밀도 자기 기록 매체 - Google Patents

고밀도 자기 기록 매체 Download PDF

Info

Publication number
KR930003030A
KR930003030A KR1019920012106A KR920012106A KR930003030A KR 930003030 A KR930003030 A KR 930003030A KR 1019920012106 A KR1019920012106 A KR 1019920012106A KR 920012106 A KR920012106 A KR 920012106A KR 930003030 A KR930003030 A KR 930003030A
Authority
KR
South Korea
Prior art keywords
magnetic recording
recording medium
film
polyethylene
naphthalate
Prior art date
Application number
KR1019920012106A
Other languages
English (en)
Other versions
KR100235255B1 (ko
Inventor
세이지 사까모또
도시후미 와따나베
도시후미 다끼사와
Original Assignee
원본 미기재
다이아호일 훽스트 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 원본 미기재, 다이아호일 훽스트 가부시끼가이샤 filed Critical 원본 미기재
Publication of KR930003030A publication Critical patent/KR930003030A/ko
Application granted granted Critical
Publication of KR100235255B1 publication Critical patent/KR100235255B1/ko

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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record 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
    • G11B5/733—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 characterised by the addition of non-magnetic 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
    • 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
    • G11B5/733—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 characterised by the addition of non-magnetic particles
    • G11B5/7334—Base layer characterised by composition or structure
    • 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
    • G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate 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
    • 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
    • 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
    • G11B5/73933—Surface treated layers, e.g. treated by corona discharge
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • 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.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • 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
    • Y10T428/254—Polymeric or resinous material
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/258—Alkali metal or alkaline earth metal 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
    • Y10T428/259—Silicic material
    • 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]
    • Y10T428/31511—Of epoxy ether
    • 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]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing
    • 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.]
    • 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.]
    • Y10T428/3179—Next to cellulosic
    • 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.]
    • Y10T428/31797—Next to addition polymer from unsaturated monomers
    • 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]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer
    • 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]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
    • 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]
    • Y10T428/31971—Of carbohydrate

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Magnetic Record Carriers (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

내용 없음.

Description

고밀도 자기 기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (17)

  1. 고조도 표면과 저조도 표면을 갖는 연신된 폴리에틸렌-2, 6-나프탈레이트 다층 필름; 하기식(1)내지 (3)에 의해 표시되는 특징을 갖고 또 상기 다층 필름의 고조도 표면상에 형성되는 피복층(A); 하기식(4)에 의해 표시되는 특징을 갖고 또 상기 다층 필름의 저조도 표면상에 형성되는 피복층(B); 및 상기 피복층(B)상에 형성되는 얇은 강자성 금속 필름을 포함하는 자기 기록 매체 :
    0.01Ha0.08 ⑴
    10,000Na60,000 ⑵
    10HD150 ⑶
    0.001Hb0.008 ⑷
    상기 식에서, Ha는 피복층(A)의 표면에서 3차 평균 돌기 높이(단위:㎛)이고; Na는 피복층(A)의 표면에서 돌기의 수(단위:돌기/㎟)이며; HD는 피복층(A)의 표면경도(단위:㎛-2)이고; 또 Hb는 피복층(B)의 표면에서 3차 평균 돌기 높이(단위:㎛)이다.
  2. 제1항에 있어서, 고조도 표면을 갖는 폴리에틸렌-2, 6-나프탈레이트 필름의 중심선 평균 조도 Ra가 0.001 내지 0.10㎛인 자기 기록 매체.
  3. 제2항에 있어서, 고조도 표면을 갖는 필름이 평균 입경 0.01 내지 0.3㎛의 불활성 입자 0.1 내지 5중량％를 함유하는 폴리에틸렌-2, 6-나프탈레이트로 제조되는 자기 기록 매체.
  4. 제2항에 있어서, 고조도 표면을 갖는 필름이, 배합되어 미세하게 분산된 다른 열가소성 수지를 함유하는 폴리에틸렌-2, 6-나프탈레이트로 제조되는 자기 기록 매체.
  5. 제2항에 있어서, 고조도 표면을 갖는 필름이 코로나방전 처리, 자외선 조사처리 또는 용매 처리된 폴리에틸렌-2, 6-나프탈레이트로 필름인 자기 기록 매체.
  6. 제1항에 있어서, 저조도 표면을 갖는 폴리에틸렌-2, 6-나프탈레이트 필름의 중심선 평균 조도 Ra가 0.004㎛ 이하인 자기 기록 매체.
  7. 제1항에 있어서, 연신된 폴리에틸렌-2, 6-나프탈레이트 다층 필름의 영률이 기계방향 및 횡방향 모두에서 650㎏/㎟인 자기 기록 매체.
  8. 제1항에 있어서, 고조도 표면을 갖는 폴리에틸렌-2, 6-나프탈레이트 필름 및 저조도 표면을 갖는 폴리에틸렌-2, 6-나프탈레이트 필름이 28 내지 38％의 결정도를 갖는 자기 기록 매체.
  9. 제1항에 있어서, 저조도 표면을 갖는 필름의 두께에 대한 고조도 표면을 갖는 필름의 두께의 비가 1:5 내지 10:1인 자기 기록 매체.
  10. 제1항에 있어서, 피복층(A)이 중합체 결합제와 윤활제로 구성된 자기 기록 매체.
  11. 제17항에 있어서, 윤활제가 무기 윤활제 또는 유기 윤활제가 자기 기록 매체.
  12. 제11항에 있어서, 무기 윤활제가 산화극소, 산화알루미늄, 카올린, 산화몰리브덴, 산회티탄 및 탄산칼슘으로 선정된 1개 이상의 물질인 자기 기록 매체.
  13. 제11항에 있어서, 유기 윤활제가 플루오릭스 수지, 폴리에틸렌, 폴리프로필렌, 폴리스티렌, 폴리메틸 메타 아크릴레이트 및 가교된 중합체로부터 선정된 1개 이상의 물질인 자기 기록 매체.
  14. 제10항에 있어서, 중합체 결합제가 폴리에스테르, 우레탄 수지, 아크릴 수지, 올레핀 수지, 셀룰로오스 수지, 페놀수지, 에폭시 수지, 비닐 아세테이트 수지 또는 고무 수지인 자기 기록 매체.
  15. 제1항에 있어서, 연신된 폴리에틸렌-2, 6-나프탈레이트 다층 필름과 피복층(A)사이에 하도 층이 배치된 자기 기록 매체.
  16. 제1항에 있어서, 피복층(B) 이 폴리에틸렌-2,6-나프탈레이트보다 더 낮은 유리 전이온도를 갖는 중합체 화합물로 구성된 자기 기록 매체.
  17. 제1항에 있어서, 연신된 폴리에틸렌-2, 6-나프탈레이트 다층 필름의 두께가 3 내지 20㎛이고, 피복층
    (A)의 두께가 0.02 내지 2㎛이고, 피복층(B)의 두께가 0.01 내지 1㎛이며, 얇은 강자성 금속 필름의 두께가 0.02 내지 l㎛인 자기 기록 매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920012106A 1991-07-10 1992-07-06 고밀도 자기 기록 매체 KR100235255B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3170198A JPH0520664A (ja) 1991-07-10 1991-07-10 高密度磁気記録媒体
JP91-170198 1991-07-10

Publications (2)

Publication Number Publication Date
KR930003030A true KR930003030A (ko) 1993-02-23
KR100235255B1 KR100235255B1 (ko) 1999-12-15

Family

ID=15900491

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920012106A KR100235255B1 (ko) 1991-07-10 1992-07-06 고밀도 자기 기록 매체

Country Status (7)

Country Link
US (1) US5364684A (ko)
EP (1) EP0522507B1 (ko)
JP (1) JPH0520664A (ko)
KR (1) KR100235255B1 (ko)
CA (1) CA2072777A1 (ko)
DE (1) DE69200946T2 (ko)
MX (1) MX9203988A (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0568008A1 (en) * 1992-04-30 1993-11-03 Diafoil Hoechst Co., Ltd Laminated polyethylene 2,6-naphthalate film
US5532049A (en) * 1993-11-01 1996-07-02 Diafoil Hoechst Company, Limited Magnetic recording medium having a calendered polyester layer with a specified deformation ratio
JPH07282438A (ja) * 1994-04-07 1995-10-27 Fuji Photo Film Co Ltd 磁気記録媒体
US5976668A (en) * 1995-02-28 1999-11-02 Sony Corporation Base film for magnetic recording medium and magnetic recording medium using same
US5906885A (en) * 1995-03-28 1999-05-25 Tdk Corporation Magnetic recording medium
US5676839A (en) * 1996-08-21 1997-10-14 Shippert; Ronald D. Floatable oil and debris collection device
JP3453033B2 (ja) 1996-10-23 2003-10-06 株式会社豊田中央研究所 被覆部材およびその製造方法
DE60015062T2 (de) * 1999-06-14 2006-03-09 Teijin Ltd. Biaxial orientierte polyesterfolie und magnetisches aufzeichnungsmedium

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5515770A (en) * 1978-07-21 1980-02-04 Kawakami Kagaku Kogyo Kk Beverage capable of changing its color tone instantaneously, and its container
JPS5547050A (en) * 1978-09-29 1980-04-02 Arai Pump Mfg Co Ltd Cylindrical surface seal
US4267657A (en) * 1979-06-20 1981-05-19 Prem Gandy Illuminated sign
US4489117A (en) * 1981-09-01 1984-12-18 Toray Industries, Inc. Super high density magnetic recording medium
US4568599A (en) * 1982-03-10 1986-02-04 Toray Industries, Inc. Laminated film and magnetic recording medium made therewith
EP0088634B1 (en) * 1982-03-10 1986-12-30 Toray Industries, Inc. Laminated film and magnetic recording medium made therewith
JPS5919230A (ja) * 1982-07-21 1984-01-31 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6050150A (ja) * 1983-08-26 1985-03-19 Nippon Kokan Kk <Nkk> 溶接熱影響部の低温靭性に優れた鋼
DE3414310A1 (de) * 1984-04-16 1985-10-24 Hoechst Ag, 6230 Frankfurt Traegerfolie fuer magnetische informationstraeger
JPS6129417A (ja) * 1984-07-20 1986-02-10 Tdk Corp 画像記録用磁気記録媒体
JPS62135339A (ja) * 1985-12-09 1987-06-18 Diafoil Co Ltd 磁気記録体用ポリエチレン−２，６−ナフタレ−トフイルム
JPS62192028A (ja) * 1986-02-18 1987-08-22 Hitachi Maxell Ltd 磁気記録媒体
JPS6328097A (ja) * 1986-07-22 1988-02-05 富士通株式会社 光フアイバコ−ド取付構造
JPS6426337A (en) * 1987-07-20 1989-01-27 Hitachi Ltd Stator of rotary electric machine
JPS6426338A (en) * 1987-07-22 1989-01-27 Hitachi Ltd Rotor of rotary electric machine
DE68929128T2 (de) * 1988-06-08 2000-05-31 Toray Industries Biaxial orientierte Verbundfolie
JP2804043B2 (ja) * 1988-07-19 1998-09-24 帝人株式会社 磁気記録シート
JPH0762082B2 (ja) * 1988-07-29 1995-07-05 宇部興産株式会社 記録媒体用ポリイミドフィルム及びその製法
US5051292A (en) * 1989-02-01 1991-09-24 Teijin Limited Biaxially oriented film of polyethylene-2,6-naphthalate

Also Published As

Publication number Publication date
JPH0520664A (ja) 1993-01-29
DE69200946D1 (de) 1995-02-02
DE69200946T2 (de) 1995-08-10
KR100235255B1 (ko) 1999-12-15
MX9203988A (es) 1993-04-01
US5364684A (en) 1994-11-15
CA2072777A1 (en) 1993-01-11
EP0522507A1 (en) 1993-01-13
EP0522507B1 (en) 1994-12-21

Similar Documents

Publication Publication Date Title
KR100218866B1 (ko) 2축배향적층폴리에스테르필름
KR910000871A (ko) 자기기록 매체용 폴리에스테르 필름
KR970066633A (ko) 편광판용 보호필름
KR920016244A (ko) 중합체 필름
KR930003030A (ko) 고밀도 자기 기록 매체
JP3088426B2 (ja) 積層二軸配向フイルム
KR880003289A (ko) 자기 기록 매체용 폴리에스테르 필름
KR970076525A (ko) 이축 배향 적층 필름 및 자기 기록 매체
KR970061950A (ko) 폴리에스테르 원료 및 이로부터 제조된 필름
KR920021312A (ko) 중합체 필름
KR900018921A (ko) 자기 기록 매체용 결합제 및 자기 기록 매체
KR960022759A (ko) 연신 필름용 폴리프로필렌계 수지조성물 및 그 연신 필름
KR920016501A (ko) 자기 기록 매체용 폴리에틸렌 테레프탈레이트 필름
JP2002079617A (ja) 帯電防止性積層ポリエステルフィルム
KR910011956A (ko) 2축 배향 폴리에스테르 필름
JP3206012B2 (ja) 積層ポリエステルフィルム
KR950011501A (ko) 침강 실리카 입자 및 소성백토를 함유한 폴리에스테르 필름
KR920018726A (ko) 디지탈 기록 매체
KR970061952A (ko) 축전기에 사용하기 위한 거친 이축 배향된 폴리에스테르 필름
KR960004409A (ko) 이축배향 폴리에스테르 필름
KR950011510A (ko) 이축연신 폴리에스테르 필름
EP0950681A4 (en) BIAXIAL ORIENTED POLYESTER FILM AND MAGNETIC RECORDING MEDIUM THAT CONTAINS THIS BASE FILM
KR970074832A (ko) 이축 배향 폴리에스테르 필름
KR930701520A (ko) 폴리에스테르 필름 및 그 제조방법
KR950018189A (ko) 자기기록매체용 폴리에틸렌테레프탈레이트 필름의 제조방법

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee