JPS57195327A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57195327A
JPS57195327A JP56079684A JP7968481A JPS57195327A JP S57195327 A JPS57195327 A JP S57195327A JP 56079684 A JP56079684 A JP 56079684A JP 7968481 A JP7968481 A JP 7968481A JP S57195327 A JPS57195327 A JP S57195327A
Authority
JP
Japan
Prior art keywords
magnetic
plane
plate
recording
occasion
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56079684A
Other languages
English (en)
Inventor
Shinichiro Idesawa
Goro Akashi
Tatsuji Kitamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP56079684A priority Critical patent/JPS57195327A/ja
Priority to US06/382,337 priority patent/US4486496A/en
Priority to DE3219780A priority patent/DE3219780A1/de
Publication of JPS57195327A publication Critical patent/JPS57195327A/ja
Pending legal-status Critical Current

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
    • G11B5/62—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
    • G11B5/706—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 the composition of the magnetic 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
    • G11B5/714—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 the dimension of the 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • 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
    • 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

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Hard Magnetic Materials (AREA)
JP56079684A 1981-05-26 1981-05-26 Magnetic recording medium Pending JPS57195327A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56079684A JPS57195327A (en) 1981-05-26 1981-05-26 Magnetic recording medium
US06/382,337 US4486496A (en) 1981-05-26 1982-05-26 Magnetic recording medium
DE3219780A DE3219780A1 (de) 1981-05-26 1982-05-26 Magnetisches aufzeichnungsmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079684A JPS57195327A (en) 1981-05-26 1981-05-26 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57195327A true JPS57195327A (en) 1982-12-01

Family

ID=13697025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079684A Pending JPS57195327A (en) 1981-05-26 1981-05-26 Magnetic recording medium

Country Status (3)

Country Link
US (1) US4486496A (ja)
JP (1) JPS57195327A (ja)
DE (1) DE3219780A1 (ja)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586525A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体
JPS5880136A (ja) * 1981-11-02 1983-05-14 Fuji Photo Film Co Ltd 磁気記録材料の製造方法
JPS5994231A (ja) * 1982-11-22 1984-05-30 Fuji Photo Film Co Ltd 磁気記録体
JPS5996532A (ja) * 1982-11-25 1984-06-04 Fuji Photo Film Co Ltd 磁気記録体
JPS6070518A (ja) * 1983-09-28 1985-04-22 Toshiba Corp 磁気記録媒体
JPS60119625A (ja) * 1983-12-01 1985-06-27 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60127527A (ja) * 1983-12-15 1985-07-08 Saiteku Kk 膜状積重磁気記録媒体およびその製造方法
JPH0630142B2 (ja) * 1984-04-23 1994-04-20 富士写真フイルム株式会社 ディスク状磁気記録媒体
US4699771A (en) * 1984-05-14 1987-10-13 Kabushiki Kaisha Toshiba Magnetic recording powder, method of manufacturing thereof and application thereof
JPH0654532B2 (ja) * 1984-07-12 1994-07-20 富士写真フイルム株式会社 磁気記録媒体
GB2173811B (en) * 1985-04-05 1988-08-24 Tdk Corp Magnetic recording medium
GB2174710B (en) * 1985-04-22 1989-04-19 Tdk Corp Coating type perpendicular magnetic recording medium for digital recording
US4810555A (en) * 1985-04-22 1989-03-07 Tdk Corporation Magnetic recording medium
EP0203002B1 (en) * 1985-05-20 1992-01-15 Fujitsu Limited Longitudinal magnetic coated recording medium
JPS61289522A (ja) * 1985-06-17 1986-12-19 Fuji Photo Film Co Ltd 磁気記録媒体
DE3637805A1 (de) * 1985-11-06 1987-07-16 Tdk Corp Magnetischer aufzeichnungstraeger
US4772522A (en) * 1986-07-21 1988-09-20 Tdk Corporation Magnetic recording medium
JPS648508A (en) * 1987-06-30 1989-01-12 Toshiba Corp Magnetic recording medium
US5230818A (en) * 1991-12-20 1993-07-27 Eastman Kodak Company Coating compositions for master media for anhysteretic recording
DE69432923T2 (de) * 1993-12-01 2004-05-19 Tdk Corp. Verfahren zur produktion eines magnetischen aufzeichnungsmediums
US7174369B1 (en) 1997-05-15 2007-02-06 Dxpdd, Inc. System and methods of updating compact disc cards and graphical user interface for updating same
US5982736A (en) 1997-05-15 1999-11-09 Pierson; Gerald A. Trading card optical compact disc and methods of using and forming same
US6939477B2 (en) 1997-06-06 2005-09-06 Ashland, Inc. Temperature-controlled induction heating of polymeric materials
US20090127253A1 (en) * 1997-06-06 2009-05-21 Philip Stark Temperature-controlled induction heating of polymeric materials
USD418502S (en) * 1998-09-03 2000-01-04 American Tract Society Compact disc
USD426203S (en) * 1998-09-17 2000-06-06 Shape Cd, Inc. Compact disc
USD421427S (en) * 1998-09-17 2000-03-07 Shape Cd, Inc. Compact disc
USD419152S (en) * 1999-02-11 2000-01-18 Shape Cd, Inc. Compact disk/mini disk
EP1326741B1 (en) * 2000-05-02 2006-08-09 Ashland Inc. Temperature-controlled induction heating of polymeric materials
US7152097B1 (en) 2000-06-19 2006-12-19 Diskxpress Us, Inc. System and methods of updating compact discs and graphical user interface for updating same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023166A (en) * 1956-08-18 1962-02-27 Philips Corp Magnetic record carrier
US3185775A (en) * 1958-03-10 1965-05-25 Iit Res Inst Oriented tape
US3117065A (en) * 1959-09-02 1964-01-07 Magnetic Film And Tape Company Method and apparatus for making magnetic recording tape
JPS52108804A (en) * 1976-03-10 1977-09-12 Fuji Photo Film Co Ltd Magnetic recording material
US4171408A (en) * 1976-07-01 1979-10-16 U.S. Philips Corporation Device operating on the displacement of magnetic domain walls
JPS5891B2 (ja) * 1977-09-30 1983-01-05 俊一 岩崎 磁気記録媒体
JPS6050323B2 (ja) * 1978-12-22 1985-11-08 株式会社東芝 高密度記録体
DE2904491A1 (de) * 1979-02-07 1980-08-21 Bayer Ag Plaettchenfoermige eisenoxidpigmente und verfahren zu deren herstellung sowie deren verwendung
JPS55125536A (en) * 1979-03-16 1980-09-27 Fuji Photo Film Co Ltd Recording medium for vertical magnetic record
US4277809A (en) * 1979-09-26 1981-07-07 Memorex Corporation Apparatus for recording magnetic impulses perpendicular to the surface of a recording medium
US4355072A (en) * 1980-02-12 1982-10-19 U.S. Philips Corporation Magnetic hexagonal ferrite layer on a nonmagnetic hexagonal mixed crystal substrate
JPS586525A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体

Also Published As

Publication number Publication date
DE3219780C2 (ja) 1992-09-17
US4486496A (en) 1984-12-04
DE3219780A1 (de) 1982-12-30

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