JPS57135440A - Magnetic recording element and manufacture thereof - Google Patents

Magnetic recording element and manufacture thereof

Info

Publication number
JPS57135440A
JPS57135440A JP57000447A JP44782A JPS57135440A JP S57135440 A JPS57135440 A JP S57135440A JP 57000447 A JP57000447 A JP 57000447A JP 44782 A JP44782 A JP 44782A JP S57135440 A JPS57135440 A JP S57135440A
Authority
JP
Japan
Prior art keywords
manufacture
magnetic recording
recording element
magnetic
recording
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.)
Granted
Application number
JP57000447A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0227728B2 (enExample
Inventor
Furederikasu Fuisu Hendorikasu
Guirierumusu Koruneri Yohanesu
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS57135440A publication Critical patent/JPS57135440A/ja
Publication of JPH0227728B2 publication Critical patent/JPH0227728B2/ja
Granted 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
    • G11B5/70626—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 containing non-metallic substances
    • G11B5/70642—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 containing non-metallic substances iron oxides
    • G11B5/70652—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 containing non-metallic substances iron oxides gamma - Fe2 O3
    • G11B5/70657—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 containing non-metallic substances iron oxides gamma - Fe2 O3 with a skin
    • 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
    • G11B5/70626—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 containing non-metallic substances
    • G11B5/70642—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 containing non-metallic substances iron oxides
    • G11B5/70647—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 containing non-metallic substances iron oxides with a skin
    • 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
    • G11B5/712—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 surface treatment or coating of magnetic particles

Landscapes

  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Paints Or Removers (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Magnetic Record Carriers (AREA)
JP57000447A 1981-01-06 1982-01-06 Magnetic recording element and manufacture thereof Granted JPS57135440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8100014A NL8100014A (nl) 1981-01-06 1981-01-06 Magnetisch registratie element alsmede methoden voor de vervaardiging ervan.

Publications (2)

Publication Number Publication Date
JPS57135440A true JPS57135440A (en) 1982-08-21
JPH0227728B2 JPH0227728B2 (enExample) 1990-06-19

Family

ID=19836820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57000447A Granted JPS57135440A (en) 1981-01-06 1982-01-06 Magnetic recording element and manufacture thereof

Country Status (5)

Country Link
US (1) US4384012A (enExample)
EP (1) EP0055994B1 (enExample)
JP (1) JPS57135440A (enExample)
DE (1) DE3261080D1 (enExample)
NL (1) NL8100014A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60240107A (ja) * 1984-05-14 1985-11-29 Toshiba Corp 磁気記録用磁性粉及びその製造方法
JP2008056097A (ja) * 2006-08-31 2008-03-13 Komatsu Utility Co Ltd 作業車両のフロアマット

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622262A (en) * 1982-12-30 1986-11-11 International Business Machines Corporation Recording materials of improved lubricity for use in electroerosion printing
US4699771A (en) * 1984-05-14 1987-10-13 Kabushiki Kaisha Toshiba Magnetic recording powder, method of manufacturing thereof and application thereof
US4830909A (en) * 1986-04-10 1989-05-16 International Business Machines Corporation Scratch resistant recording materials for electroerosion printing comprising cross-linked polymer base layer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686031A (en) * 1969-11-26 1972-08-22 Du Pont Metal phosphate coated ferromagnetic chromium oxide and its preparation
JPS4843437B1 (enExample) * 1970-12-16 1973-12-18
JPS564566B2 (enExample) * 1972-07-05 1981-01-30
US3904540A (en) * 1972-02-11 1975-09-09 Pfizer Magnetic impulse record member
NL7306877A (enExample) * 1972-05-24 1973-11-27
FR2199177A1 (en) * 1972-09-07 1974-04-05 Matsushita Electric Industrial Co Ltd Cobalt substd gamma-ferric oxide magnetic powder - modified with a halide to increase coercive force and residual induction and diminish the temp dependence
JPS5133758A (enExample) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
US4268540A (en) * 1978-09-25 1981-05-19 Ampex Corporation Particles for magnetic recording
JPS6016728B2 (ja) * 1979-05-10 1985-04-27 ソニー株式会社 磁性粉の製法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60240107A (ja) * 1984-05-14 1985-11-29 Toshiba Corp 磁気記録用磁性粉及びその製造方法
JP2008056097A (ja) * 2006-08-31 2008-03-13 Komatsu Utility Co Ltd 作業車両のフロアマット

Also Published As

Publication number Publication date
EP0055994B1 (en) 1984-10-31
EP0055994A2 (en) 1982-07-14
NL8100014A (nl) 1982-08-02
DE3261080D1 (en) 1984-12-06
JPH0227728B2 (enExample) 1990-06-19
US4384012A (en) 1983-05-17
EP0055994A3 (en) 1982-08-04

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