FR2181874A1 - - Google Patents

Info

Publication number
FR2181874A1
FR2181874A1 FR7312689A FR7312689A FR2181874A1 FR 2181874 A1 FR2181874 A1 FR 2181874A1 FR 7312689 A FR7312689 A FR 7312689A FR 7312689 A FR7312689 A FR 7312689A FR 2181874 A1 FR2181874 A1 FR 2181874A1
Authority
FR
France
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.)
Granted
Application number
FR7312689A
Other languages
French (fr)
Other versions
FR2181874B1 (es
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
Priority claimed from JP3557772A external-priority patent/JPS5119971B2/ja
Priority claimed from JP3557672A external-priority patent/JPS5137002B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2181874A1 publication Critical patent/FR2181874A1/fr
Application granted granted Critical
Publication of FR2181874B1 publication Critical patent/FR2181874B1/fr
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
    • G11B5/702—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
    • G11B5/7028—Additives, e.g. crosslinking agents
    • 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
    • G11B5/7013—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 dispersing agent
FR7312689A 1972-04-07 1973-04-09 Expired FR2181874B1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3557772A JPS5119971B2 (es) 1972-04-07 1972-04-07
JP3557672A JPS5137002B2 (es) 1972-04-07 1972-04-07

Publications (2)

Publication Number Publication Date
FR2181874A1 true FR2181874A1 (es) 1973-12-07
FR2181874B1 FR2181874B1 (es) 1977-02-18

Family

ID=26374567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312689A Expired FR2181874B1 (es) 1972-04-07 1973-04-09

Country Status (6)

Country Link
CA (1) CA1042277A (es)
DE (1) DE2317409C3 (es)
FR (1) FR2181874B1 (es)
GB (1) GB1431854A (es)
IT (1) IT983703B (es)
NL (1) NL7304945A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180651A1 (de) * 1984-10-31 1986-05-14 Ibm Deutschland Gmbh Magnetplatte und Verfahren zu ihrer Herstellung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1167408A (en) * 1980-09-22 1984-05-15 Hao-Jan Chang Electron beam curing of magnetic media
JPS6087429A (ja) * 1983-10-19 1985-05-17 Victor Co Of Japan Ltd 磁気記録媒体及びその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404997A (en) * 1965-05-10 1968-10-08 Ampex Magnetic recording media
US3412044A (en) * 1965-06-03 1968-11-19 Ampex Diamine soap as dispersant in magnetic tape formulations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180651A1 (de) * 1984-10-31 1986-05-14 Ibm Deutschland Gmbh Magnetplatte und Verfahren zu ihrer Herstellung

Also Published As

Publication number Publication date
NL7304945A (es) 1973-10-09
CA1042277A (en) 1978-11-14
FR2181874B1 (es) 1977-02-18
GB1431854A (en) 1976-04-14
IT983703B (it) 1974-11-11
DE2317409A1 (de) 1973-10-11
DE2317409B2 (de) 1980-11-20
DE2317409C3 (de) 1981-11-12

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Legal Events

Date Code Title Description
ST Notification of lapse