CA981533A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
CA981533A
CA981533A CA140,518A CA140518A CA981533A CA 981533 A CA981533 A CA 981533A CA 140518 A CA140518 A CA 140518A CA 981533 A CA981533 A CA 981533A
Authority
CA
Canada
Prior art keywords
recording medium
magnetic recording
magnetic
medium
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.)
Expired
Application number
CA140,518A
Other languages
English (en)
Other versions
CA140518S (en
Inventor
Masashi Somezawa
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of CA981533A publication Critical patent/CA981533A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
    • 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
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording 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
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7371—Non-magnetic single underlayer comprising nickel
    • 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
    • G11B5/73913—Composites or coated substrates
    • 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
    • G11B5/73923—Organic polymer substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Chemically Coating (AREA)
CA140,518A 1971-04-26 1972-04-25 Magnetic recording medium Expired CA981533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2739571A JPS56850B1 (it) 1971-04-26 1971-04-26

Publications (1)

Publication Number Publication Date
CA981533A true CA981533A (en) 1976-01-13

Family

ID=12219857

Family Applications (1)

Application Number Title Priority Date Filing Date
CA140,518A Expired CA981533A (en) 1971-04-26 1972-04-25 Magnetic recording medium

Country Status (7)

Country Link
JP (1) JPS56850B1 (it)
CA (1) CA981533A (it)
DE (1) DE2220544A1 (it)
FR (1) FR2134565B1 (it)
GB (1) GB1366034A (it)
IT (1) IT953770B (it)
NL (1) NL7205642A (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1091347A (en) * 1976-09-14 1980-12-09 Makoto Honda Magnetic recording structure
JPH0610873B2 (ja) * 1984-02-08 1994-02-09 日立マクセル株式会社 磁気デイスク
US4698251A (en) * 1985-01-22 1987-10-06 Victor Company Of Japan, Limited Magnetic recording medium and method of producing the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1273334A (fr) * 1960-11-14 1961-10-06 Agfa Ag Support d'enregistrement magnétique à deux couches possédant une conductivité électrique améliorée
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
DE1521152A1 (de) * 1965-07-16 1969-04-24 Basf Ag Metallisierung von Kunststoffoberflaechen
FR1473728A (fr) * 1966-04-01 1967-03-17 Wolfen Filmfab Veb Procédé et dispositif de production d'un matériau d'enregistrement magnétisable,de préférence sous forme de bande

Also Published As

Publication number Publication date
JPS56850B1 (it) 1981-01-09
NL7205642A (it) 1972-10-30
IT953770B (it) 1973-08-10
GB1366034A (en) 1974-09-04
FR2134565A1 (it) 1972-12-08
FR2134565B1 (it) 1974-12-20
DE2220544A1 (de) 1972-11-09

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