JPH036576B2 - - Google Patents

Info

Publication number
JPH036576B2
JPH036576B2 JP56153298A JP15329881A JPH036576B2 JP H036576 B2 JPH036576 B2 JP H036576B2 JP 56153298 A JP56153298 A JP 56153298A JP 15329881 A JP15329881 A JP 15329881A JP H036576 B2 JPH036576 B2 JP H036576B2
Authority
JP
Japan
Prior art keywords
magnetic
layer
iron oxide
powder
surface area
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 - Lifetime
Application number
JP56153298A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5856228A (ja
Inventor
Isao Kubota
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
Priority to JP56153298A priority Critical patent/JPS5856228A/ja
Priority to DE19823249035 priority patent/DE3249035T1/de
Priority to EP19820902834 priority patent/EP0090052B1/en
Priority to PCT/JP1982/000389 priority patent/WO1983001144A1/ja
Priority to NL8220323A priority patent/NL8220323A/nl
Priority to GB08313129A priority patent/GB2119284B/en
Publication of JPS5856228A publication Critical patent/JPS5856228A/ja
Publication of JPH036576B2 publication Critical patent/JPH036576B2/ja
Granted 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

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
JP56153298A 1981-09-28 1981-09-28 磁気記録媒体 Granted JPS5856228A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP56153298A JPS5856228A (ja) 1981-09-28 1981-09-28 磁気記録媒体
DE19823249035 DE3249035T1 (de) 1981-09-28 1982-09-27 Magnetisches aufzeichnungsmedium
EP19820902834 EP0090052B1 (en) 1981-09-28 1982-09-27 Magnetic recording medium
PCT/JP1982/000389 WO1983001144A1 (en) 1981-09-28 1982-09-27 Magnetic recording medium
NL8220323A NL8220323A (nl) 1981-09-28 1982-09-27 Magnetisch registreermedium.
GB08313129A GB2119284B (en) 1981-09-28 1982-09-27 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56153298A JPS5856228A (ja) 1981-09-28 1981-09-28 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5856228A JPS5856228A (ja) 1983-04-02
JPH036576B2 true JPH036576B2 (en]) 1991-01-30

Family

ID=15559410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56153298A Granted JPS5856228A (ja) 1981-09-28 1981-09-28 磁気記録媒体

Country Status (5)

Country Link
EP (1) EP0090052B1 (en])
JP (1) JPS5856228A (en])
GB (1) GB2119284B (en])
NL (1) NL8220323A (en])
WO (1) WO1983001144A1 (en])

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6052924A (ja) * 1983-09-02 1985-03-26 Tdk Corp 磁気記録媒体
JPS60124025A (ja) * 1983-12-06 1985-07-02 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60170028A (ja) * 1984-02-14 1985-09-03 Tdk Corp 磁気記録媒体
JP2881448B2 (ja) * 1989-05-11 1999-04-12 コニカ株式会社 磁気記録媒体
JPH0349030A (ja) * 1989-07-18 1991-03-01 Tdk Corp 磁気記録媒体およびその製造方法
DE19714161A1 (de) * 1997-04-05 1998-10-08 Emtec Magnetics Gmbh Magnetischer Aufzeichnungsträger
US6479131B1 (en) 1999-06-21 2002-11-12 Fuji Photo Film Co., Ltd. Magnetic recording medium
US6548160B2 (en) 1999-12-01 2003-04-15 Fuji Photo Film Co., Ltd. Magnetic recording media
US7283320B2 (en) 2003-06-30 2007-10-16 Fujifilm Corporation Magnetic recording medium including servo and data bands in the magnetic layer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE795896A (fr) * 1972-02-24 1973-08-23 Eastman Kodak Co Materiau pour l'enregistrement magnetique a plusieurs couches et son procede de preparation
JPS5617734B2 (en]) * 1973-07-19 1981-04-24
JPS5630608B2 (en]) * 1973-08-27 1981-07-16
JPS5147402A (en]) * 1974-10-21 1976-04-23 Fuji Photo Film Co Ltd
JPS58100B2 (ja) * 1975-04-11 1983-01-05 富士写真フイルム株式会社 ジキキロクタイ
JPS5843815B2 (ja) * 1975-10-23 1983-09-29 富士写真フイルム株式会社 ジキキロクテ−プ
JPS5354002A (en) * 1976-10-26 1978-05-17 Sony Corp Magnetic recording medium
JPS545705A (en) * 1977-06-16 1979-01-17 Fuji Photo Film Co Ltd Double layer magnetic recording medium
JPS5421304A (en) * 1977-07-18 1979-02-17 Fuji Photo Film Co Ltd Double layer magnetic recording tape
JPS5448504A (en) * 1977-09-21 1979-04-17 Tdk Corp Magnetic recording medium
JPS55108928A (en) * 1979-02-09 1980-08-21 Tdk Corp Magnetic recording medium

Also Published As

Publication number Publication date
JPS5856228A (ja) 1983-04-02
EP0090052B1 (en) 1987-06-24
EP0090052A4 (en) 1985-04-24
NL8220323A (nl) 1983-08-01
GB2119284A (en) 1983-11-16
GB2119284B (en) 1985-05-01
EP0090052A1 (en) 1983-10-05
WO1983001144A1 (en) 1983-03-31
GB8313129D0 (en) 1983-06-15

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