FR2203129A1 - - Google Patents

Info

Publication number
FR2203129A1
FR2203129A1 FR7336578A FR7336578A FR2203129A1 FR 2203129 A1 FR2203129 A1 FR 2203129A1 FR 7336578 A FR7336578 A FR 7336578A FR 7336578 A FR7336578 A FR 7336578A FR 2203129 A1 FR2203129 A1 FR 2203129A1
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
FR7336578A
Other versions
FR2203129B1 (fr
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of FR2203129A1 publication Critical patent/FR2203129A1/fr
Application granted granted Critical
Publication of FR2203129B1 publication Critical patent/FR2203129B1/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
    • 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
    • G11B5/735—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 characterised by the back layer
    • G11B5/7356—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 characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
FR7336578A 1972-10-13 1973-10-12 Expired FR2203129B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2250383A DE2250383C3 (de) 1972-10-13 1972-10-13 Magnetisierbares Speichermedium

Publications (2)

Publication Number Publication Date
FR2203129A1 true FR2203129A1 (fr) 1974-05-10
FR2203129B1 FR2203129B1 (fr) 1979-03-30

Family

ID=5859013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7336578A Expired FR2203129B1 (fr) 1972-10-13 1973-10-12

Country Status (7)

Country Link
JP (1) JPS4974909A (fr)
BE (1) BE805692A (fr)
DE (1) DE2250383C3 (fr)
FR (1) FR2203129B1 (fr)
GB (1) GB1416946A (fr)
IT (1) IT994392B (fr)
NL (1) NL7313940A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501372C2 (de) * 1975-01-15 1983-10-27 Basf Ag, 6700 Ludwigshafen Flexible Schichtmagnetogrammträger mit Rückseitenbeschichtung und Verfahren zu ihrer Herstellung
JPS595429A (ja) * 1982-06-30 1984-01-12 Hitachi Maxell Ltd 磁気記録媒体
JPS6080124A (ja) * 1983-10-07 1985-05-08 Fuji Photo Film Co Ltd 磁気記録媒体
DE3405960A1 (de) * 1984-02-18 1985-08-22 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von magnetischen aufzeichnungstraegern mit rueckschicht sowie danach hergestellte magnetische aufzeichnungstraeger
JPS60229235A (ja) * 1984-04-27 1985-11-14 Fuji Photo Film Co Ltd 磁気記録媒体の製法
JPS60238184A (ja) * 1984-05-12 1985-11-27 Fine Tec Kenkyusho:Kk 高速で移動する長尺体の表面に液状体を連続的に塗布する方法
JPS61104327A (ja) * 1984-10-23 1986-05-22 Konishiroku Photo Ind Co Ltd 磁気記録媒体
JPS61180924A (ja) * 1984-12-28 1986-08-13 Konishiroku Photo Ind Co Ltd 磁気記録媒体
KR900002972B1 (ko) * 1985-05-29 1990-05-03 니뽕 빅터 가부시끼가이샤 자기 기록 매체
KR900002991B1 (en) * 1985-05-29 1990-05-04 Victor Company Of Japan Magnetic recording carrier
JPS61273734A (ja) * 1985-05-30 1986-12-04 Victor Co Of Japan Ltd 磁気記録媒体
KR900006305B1 (ko) * 1985-07-22 1990-08-28 니뽕 빅터 가부시끼가이샤 자기 기록 매체

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1136895A (en) * 1965-04-05 1968-12-18 Eastman Kodak Co Magnetic recording material
FR2060553A5 (fr) * 1969-09-29 1971-06-18 Ibm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1136895A (en) * 1965-04-05 1968-12-18 Eastman Kodak Co Magnetic recording material
FR2060553A5 (fr) * 1969-09-29 1971-06-18 Ibm

Also Published As

Publication number Publication date
DE2250383C3 (de) 1978-06-15
IT994392B (it) 1975-10-20
DE2250383A1 (de) 1974-05-02
GB1416946A (en) 1975-12-10
BE805692A (nl) 1974-04-05
FR2203129B1 (fr) 1979-03-30
DE2250383B2 (de) 1977-10-27
JPS4974909A (fr) 1974-07-19
NL7313940A (fr) 1974-03-25

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Legal Events

Date Code Title Description
ST Notification of lapse