GB944864A - Magnetic recording media - Google Patents

Magnetic recording media

Info

Publication number
GB944864A
GB944864A GB3356062A GB3356062A GB944864A GB 944864 A GB944864 A GB 944864A GB 3356062 A GB3356062 A GB 3356062A GB 3356062 A GB3356062 A GB 3356062A GB 944864 A GB944864 A GB 944864A
Authority
GB
United Kingdom
Prior art keywords
layer
magnetic recording
particles
layers
recording medium
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.)
Expired
Application number
GB3356062A
Inventor
Benjamin B Bauer
Dennis Gabor
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to GB3356062A priority Critical patent/GB944864A/en
Publication of GB944864A publication Critical patent/GB944864A/en
Expired 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
    • G11B5/716—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
    • 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

Landscapes

  • Paints Or Removers (AREA)

Abstract

944,864. Magnetic recording medium. MINNESOTA MINING & MANUFACTURING CO. Aug. 31, 1962, No. 33560/62. Heading H1H. A magnetic recording medium has adjacent layers of anisotropic magnetic material, one having maximum permeability in a direction in the plane of the layers and the other having maximum permeability in a direction at right angles to the layers. In the Figure, a tape 14, which may be of paper, cellulose acetate or " Mylar " (Registered Trade Mark) is first coated with a layer 15 of particles in a binder, the particles being aligned by a magnetic field, and when the first coating is set a second layer 16 is applied, preferably only 2 or 3 microns thick. The particles of the layer 16 may have a higher coercive force and a lower remanance than those of the layer 15.
GB3356062A 1962-08-31 1962-08-31 Magnetic recording media Expired GB944864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3356062A GB944864A (en) 1962-08-31 1962-08-31 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3356062A GB944864A (en) 1962-08-31 1962-08-31 Magnetic recording media

Publications (1)

Publication Number Publication Date
GB944864A true GB944864A (en) 1963-12-18

Family

ID=10354525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3356062A Expired GB944864A (en) 1962-08-31 1962-08-31 Magnetic recording media

Country Status (1)

Country Link
GB (1) GB944864A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161875A2 (en) * 1984-05-10 1985-11-21 Kabushiki Kaisha Toshiba Perpendicular magnetic recording method & apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161875A2 (en) * 1984-05-10 1985-11-21 Kabushiki Kaisha Toshiba Perpendicular magnetic recording method & apparatus
EP0161875A3 (en) * 1984-05-10 1987-10-28 Kabushiki Kaisha Toshiba Perpendicular magnetic recording method & apparatus
US4719520A (en) * 1984-05-10 1988-01-12 Kabushiki Kaisha Toshiba Method and apparatus for setting recording current in perpendicular magnetic recording apparatus

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