GB1528018A - Flexible multilayer magnetic recording medium - Google Patents

Flexible multilayer magnetic recording medium

Info

Publication number
GB1528018A
GB1528018A GB5310075A GB5310075A GB1528018A GB 1528018 A GB1528018 A GB 1528018A GB 5310075 A GB5310075 A GB 5310075A GB 5310075 A GB5310075 A GB 5310075A GB 1528018 A GB1528018 A GB 1528018A
Authority
GB
United Kingdom
Prior art keywords
recording medium
magnetic recording
flexible multilayer
multilayer magnetic
dec
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
GB5310075A
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of GB1528018A publication Critical patent/GB1528018A/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

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

1528018 Magnetic recording medium BASF AG 30 Dec 1975 [31 Dec 1974] 53100/75 Heading B2E] A magnetic recording medium comprises a base, e.g. of polyethylene terephthalate, which has at least two layers containing an acicular magnetic material in an organic binder, e.g. Fe 2 O 3 in vinyl chloride/vinyl acetate copolymer, the uppermost magnetic layer having a signal to print through ratio less than 55db and the lowermost magnetic layer having a signal to print through ratio of at least 55db.
GB5310075A 1974-12-31 1975-12-30 Flexible multilayer magnetic recording medium Expired GB1528018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742461936 DE2461936C3 (en) 1974-12-31 1974-12-31 Layer magnetogram carrier

Publications (1)

Publication Number Publication Date
GB1528018A true GB1528018A (en) 1978-10-11

Family

ID=5934804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5310075A Expired GB1528018A (en) 1974-12-31 1975-12-30 Flexible multilayer magnetic recording medium

Country Status (3)

Country Link
JP (1) JPS5189701A (en)
DE (1) DE2461936C3 (en)
GB (1) GB1528018A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134321A (en) * 1980-03-21 1981-10-21 Olympus Optical Co Ltd Magnetic recording medium
JPS57176538A (en) * 1981-04-21 1982-10-29 Toshiba Corp Magnetic disc

Also Published As

Publication number Publication date
DE2461936B2 (en) 1980-09-25
DE2461936A1 (en) 1976-07-08
JPS5189701A (en) 1976-08-06
DE2461936C3 (en) 1983-02-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee