KR850002533A - 자기기록 매체 - Google Patents

자기기록 매체 Download PDF

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Publication number
KR850002533A
KR850002533A KR1019840005366A KR840005366A KR850002533A KR 850002533 A KR850002533 A KR 850002533A KR 1019840005366 A KR1019840005366 A KR 1019840005366A KR 840005366 A KR840005366 A KR 840005366A KR 850002533 A KR850002533 A KR 850002533A
Authority
KR
South Korea
Prior art keywords
powder
magnetic recording
recording medium
medium according
magnetic
Prior art date
Application number
KR1019840005366A
Other languages
English (en)
Other versions
KR920001980B1 (ko
Inventor
아기라 모리오가 (외 2)
Original Assignee
나가이 아쯔시
히다찌 마구세루 가부시기 가이샤
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 나가이 아쯔시, 히다찌 마구세루 가부시기 가이샤 filed Critical 나가이 아쯔시
Publication of KR850002533A publication Critical patent/KR850002533A/ko
Application granted granted Critical
Publication of KR920001980B1 publication Critical patent/KR920001980B1/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
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables
    • G02B6/4428—Penetrator systems in pressure-resistant devices
    • 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.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24215—Acute or reverse fold of exterior component
    • Y10T428/24231—At opposed marginal edges
    • Y10T428/2424—Annular cover
    • Y10T428/24248—One piece
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

내용 없음

Description

자기기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (7)

  1. 자성분말을 결합제중에 분산 결착시켜서 되는 자성층중에 α-Fe2O3분말과 Al2O3분말과, CrO3분말을 함유시킨 것을 특징으로 하는 자기기록매체.
  2. 상기 α-Fe2O3분말이 입상으로 0.4~2.0㎌의 평균 단일 입자 지름을 갖은 것을 특징으로 하는 특허청구범위 제1항 기재의 자기기록매체.
  3. 상기 α-Fe2O3분말이 상기 분말에 대하여 2~10중량%을 함유시킨 것을 특징으로 하는 특허청구범위 제1항 기재의 기록매체.
  4. 상기 Al2O3분말이 0.2~0.7㎛의 평균 단일입자 지름을 갖은것을 특징으로 하는 특허청구범위 제1항 기재의 자기기록매체.
  5. 상기 Al2O3분말이 상기 자성 분말에 대하여 2~4중량% 함유시킨 것을 특징으로 하는 특허청구범위 제1항 기재의 자기기록매체.
  6. 상기 Cr2O3분말이 0.4~1.5㎛의 평균 단일입자 지름을 갖은 것을 특징으로 하는 특허청구범위 제1항기재의 자기기록매체.
  7. 상기 Cr2O3분말이 상기 자성 분말에 대하여 0.2~1.0중량% 함유시킨 것을 특징으로 하는 특허청구 범위 제1항 기재의 자기기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840005366A 1983-09-07 1984-08-31 자기기록매체 KR920001980B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP58165779A JPS6057530A (ja) 1983-09-07 1983-09-07 磁気記録媒体
JP165779 1983-09-07
JP58-165779 1983-09-07

Publications (2)

Publication Number Publication Date
KR850002533A true KR850002533A (ko) 1985-05-13
KR920001980B1 KR920001980B1 (ko) 1992-03-07

Family

ID=15818856

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840005366A KR920001980B1 (ko) 1983-09-07 1984-08-31 자기기록매체

Country Status (4)

Country Link
US (1) US4618536A (ko)
EP (1) EP0138036A3 (ko)
JP (1) JPS6057530A (ko)
KR (1) KR920001980B1 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668568A (en) * 1981-05-07 1987-05-26 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPS62109227A (ja) * 1985-11-06 1987-05-20 Fuji Photo Film Co Ltd 磁気記録媒体
US4729922A (en) * 1985-11-11 1988-03-08 Fuji Photo Film Co., Ltd. Magnetic recording medium
US4818608A (en) * 1986-02-10 1989-04-04 Matsushita Electric Industrial Co., Ltd. Magnetic recording medium
JPS62185232A (ja) * 1986-02-10 1987-08-13 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS62250518A (ja) * 1986-04-23 1987-10-31 Tdk Corp 磁気記録媒体
JP2527942B2 (ja) * 1986-09-18 1996-08-28 ティーディーケイ株式会社 磁気記録媒体
JP2631685B2 (ja) * 1988-02-29 1997-07-16 富士写真フイルム株式会社 磁気記録媒体
CN1037343C (zh) * 1995-10-05 1998-02-11 复旦大学 一种β－紫罗兰酮生产方法
US6194058B1 (en) 1998-07-31 2001-02-27 Quantegy, Inc. Multi-layer magnetic recording medium, method and system of manufacture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143608A (en) * 1978-04-29 1979-11-09 Victor Co Of Japan Ltd Magnetic recording medium
JPS5923009B2 (ja) * 1979-06-26 1984-05-30 日本ビクター株式会社 磁気記録媒体
JPS5613525A (en) * 1979-07-16 1981-02-09 Tdk Corp Magnetic recording medium
JPS576439A (en) * 1980-06-13 1982-01-13 Tdk Corp Magnetic recording medium
JPS5712421A (en) * 1980-06-23 1982-01-22 Tdk Corp Magnetic recording medium
JPS57162127A (en) * 1981-03-31 1982-10-05 Fuji Photo Film Co Ltd Magnetic recording body
JPS57179945A (en) * 1981-04-28 1982-11-05 Fuji Photo Film Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
JPS6057530A (ja) 1985-04-03
EP0138036A3 (en) 1986-04-30
US4618536A (en) 1986-10-21
EP0138036A2 (en) 1985-04-24
KR920001980B1 (ko) 1992-03-07

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E902 Notification of reason for refusal
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