CH506155A - Magnetic data storage device - Google Patents

Magnetic data storage device

Info

Publication number
CH506155A
CH506155A CH439870A CH439870A CH506155A CH 506155 A CH506155 A CH 506155A CH 439870 A CH439870 A CH 439870A CH 439870 A CH439870 A CH 439870A CH 506155 A CH506155 A CH 506155A
Authority
CH
Switzerland
Prior art keywords
storage device
data storage
magnetic data
magnetic
storage
Prior art date
Application number
CH439870A
Other languages
German (de)
Inventor
Vincent Peugh Herbert
Ricco Leo Di
Ray Hawkins Cecil
George Newman Ernest
Francis Ryon Robert
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of CH506155A publication Critical patent/CH506155A/en

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
CH439870A 1969-04-14 1970-03-24 Magnetic data storage device CH506155A (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
CH506155A true CH506155A (en) 1971-04-15

Family

ID=27123975

Family Applications (1)

Application Number Title Priority Date Filing Date
CH439870A CH506155A (en) 1969-04-14 1970-03-24 Magnetic data storage device

Country Status (4)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136044B1 (en) * 1971-04-20 1976-10-06
DE2254981A1 (en) * 1972-11-10 1974-06-12 Basf Ag METHOD OF MANUFACTURING MAGNETIC PLATES WITH THIN MAGNETIC LAYERS
DE2255028A1 (en) * 1972-11-10 1974-06-12 Basf Ag METHOD OF MANUFACTURING MAGNETIC RECORDING DISCS
NL181759C (en) * 1976-09-14 1987-10-16 Dainippon Printing Co Ltd MAGNETIC REGISTRATION MATERIAL.
FR2461996A1 (en) * 1979-07-18 1981-02-06 Matsushita Electric Ind Co Ltd Magnetic recording medium of ferromagnetic thin film tape - with UV-cured epoxide! resin coating contg. lubricant to reduce wear
US4515828A (en) * 1981-01-02 1985-05-07 International Business Machines Corporation Planarization method
DE3212907C2 (en) * 1981-04-06 1985-10-24 Olympus Optical Co., Ltd., Tokio/Tokyo Magnetic tape and process for its manufacture
US4548855A (en) * 1982-11-02 1985-10-22 Toray Industries, Inc. Polyester film for magnetic recording medium
JPH0610873B2 (en) * 1984-02-08 1994-02-09 日立マクセル株式会社 Magnetic disk
JPH0618067B2 (en) * 1984-02-13 1994-03-09 日本ビクター株式会社 Magnetic recording medium
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

Also Published As

Publication number Publication date
FR2039149A1 (en) 1971-01-15
BE748938A (en) 1970-09-16
DE2016422A1 (en) 1970-10-15

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Legal Events

Date Code Title Description
PL Patent ceased