FR2039149A1 - - Google Patents

Info

Publication number
FR2039149A1
FR2039149A1 FR7012250A FR7012250A FR2039149A1 FR 2039149 A1 FR2039149 A1 FR 2039149A1 FR 7012250 A FR7012250 A FR 7012250A FR 7012250 A FR7012250 A FR 7012250A FR 2039149 A1 FR2039149 A1 FR 2039149A1
Authority
FR
France
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.)
Withdrawn
Application number
FR7012250A
Other languages
French (fr)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2039149A1 publication Critical patent/FR2039149A1/fr
Withdrawn legal-status Critical Current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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • 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
    • G11B5/702—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 bonding agent
    • G11B5/7023—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 bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
    • 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
    • G11B5/716—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 two or more magnetic layers
    • G11B5/718—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 two or more magnetic layers at least one on each side of the base layer
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
FR7012250A 1969-04-14 1970-04-03 Withdrawn FR2039149A1 (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81560069A 1969-04-14 1969-04-14
US81573669A 1969-04-14 1969-04-14

Publications (1)

Publication Number Publication Date
FR2039149A1 true FR2039149A1 (enrdf_load_stackoverflow) 1971-01-15

Family

ID=27123975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7012250A Withdrawn FR2039149A1 (enrdf_load_stackoverflow) 1969-04-14 1970-04-03

Country Status (4)

Country Link
BE (1) BE748938A (enrdf_load_stackoverflow)
CH (1) CH506155A (enrdf_load_stackoverflow)
DE (1) DE2016422A1 (enrdf_load_stackoverflow)
FR (1) FR2039149A1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133968A1 (enrdf_load_stackoverflow) * 1971-04-20 1972-12-01 Sony Corp
FR2364525A1 (fr) * 1976-09-14 1978-04-07 Dainippon Printing Co Ltd Structure d'enregistrement magnetique
FR2461996A1 (fr) * 1979-07-18 1981-02-06 Matsushita Electric Ind Co Ltd Support d'enregistrement magnetique
EP0055819A3 (en) * 1981-01-02 1983-01-26 International Business Machines Corporation A method of providing a layer of polymeric material on a substrate

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2255028A1 (de) * 1972-11-10 1974-06-12 Basf Ag Verfahren zur herstellung von magnetischen aufzeichnungsplatten
DE2254981A1 (de) * 1972-11-10 1974-06-12 Basf Ag Verfahren zur herstellung von magnetplatten mit duennen magnetschichten
DE3212907C2 (de) * 1981-04-06 1985-10-24 Olympus Optical Co., Ltd., Tokio/Tokyo Magnetband sowie Verfahren zu dessen Herstellung
US4548855A (en) * 1982-11-02 1985-10-22 Toray Industries, Inc. Polyester film for magnetic recording medium
JPH0610873B2 (ja) * 1984-02-08 1994-02-09 日立マクセル株式会社 磁気デイスク
JPH0618067B2 (ja) * 1984-02-13 1994-03-09 日本ビクター株式会社 磁気記録媒体
CA1243402A (en) * 1984-05-16 1988-10-18 Burroughs Corporation Methods of preparing and applying subbing layers for optical data disks
US4677032A (en) * 1985-09-23 1987-06-30 International Business Machines Corporation Vertical magnetic recording media with multilayered magnetic film structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133968A1 (enrdf_load_stackoverflow) * 1971-04-20 1972-12-01 Sony Corp
FR2364525A1 (fr) * 1976-09-14 1978-04-07 Dainippon Printing Co Ltd Structure d'enregistrement magnetique
FR2461996A1 (fr) * 1979-07-18 1981-02-06 Matsushita Electric Ind Co Ltd Support d'enregistrement magnetique
EP0055819A3 (en) * 1981-01-02 1983-01-26 International Business Machines Corporation A method of providing a layer of polymeric material on a substrate

Also Published As

Publication number Publication date
CH506155A (de) 1971-04-15
DE2016422A1 (de) 1970-10-15
BE748938A (fr) 1970-09-16

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Legal Events

Date Code Title Description
ST Notification of lapse