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GB1342797A - Magnetic recording medium method of and device for enhancing marine navigational sound signals in teh - Google Patents

Magnetic recording medium method of and device for enhancing marine navigational sound signals in teh

Info

Publication number
GB1342797A
GB1342797A GB1419071A GB1419071A GB1342797A GB 1342797 A GB1342797 A GB 1342797A GB 1419071 A GB1419071 A GB 1419071A GB 1419071 A GB1419071 A GB 1419071A GB 1342797 A GB1342797 A GB 1342797A
Authority
GB
United Kingdom
Prior art keywords
teh
recording medium
magnetic recording
sound signals
medium method
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
GB1419071A
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 GB1342797A publication Critical patent/GB1342797A/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
    • G11B5/708—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 addition of non-magnetic particles to the layer
    • G11B5/7085—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 addition of non-magnetic particles to the layer non-magnetic abrasive 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
    • G11B5/68—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
    • G11B5/708—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 addition of non-magnetic particles to the layer
GB1419071A 1970-06-08 1971-05-11 Magnetic recording medium method of and device for enhancing marine navigational sound signals in teh Expired GB1342797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4428470A 1970-06-08 1970-06-08

Publications (1)

Publication Number Publication Date
GB1342797A true GB1342797A (en) 1974-01-03

Family

ID=21931507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1419071A Expired GB1342797A (en) 1970-06-08 1971-05-11 Magnetic recording medium method of and device for enhancing marine navigational sound signals in teh

Country Status (6)

Country Link
BE (1) BE768176A (en)
CA (1) CA974046A (en)
DE (1) DE2124174A1 (en)
FR (1) FR2096031A5 (en)
GB (1) GB1342797A (en)
NL (1) NL7106779A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512450C3 (en) * 1975-03-21 1981-11-12 Basf Ag, 6700 Ludwigshafen Layer magnetogram carrier
JPS5758227A (en) * 1980-09-25 1982-04-07 Tdk Corp Magnetic recording medium
US4451532A (en) * 1981-05-29 1984-05-29 International Business Machines Corporation Magnetic recording composition employing mono-dispersed spherical load-bearing particles
DE3473958D1 (en) * 1984-10-31 1988-10-13 Ibm Deutschland Magnetic disc and process for producing it
DE3470811D1 (en) * 1984-10-31 1988-06-01 Ibm Deutschland Magnetic disc and process for producing it

Also Published As

Publication number Publication date
DE2124174A1 (en) 1971-12-16
FR2096031A5 (en) 1972-02-11
BE768176A (en) 1971-12-07
CA974046A (en) 1975-09-09
NL7106779A (en) 1971-12-10

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years