DE3628874C2 - - Google Patents

Info

Publication number
DE3628874C2
DE3628874C2 DE3628874A DE3628874A DE3628874C2 DE 3628874 C2 DE3628874 C2 DE 3628874C2 DE 3628874 A DE3628874 A DE 3628874A DE 3628874 A DE3628874 A DE 3628874A DE 3628874 C2 DE3628874 C2 DE 3628874C2
Authority
DE
Germany
Prior art keywords
magnetic
ferrite
recording medium
substitution
hexagonal
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
DE3628874A
Other languages
German (de)
English (en)
Other versions
DE3628874A1 (de
Inventor
Osamu Kubo
Tsutomu Yokohama Kanagawa Jp Nomura
Tadashi Ebina Kanagawa Jp Ido
Hirotaka Yokosuka Kanagawa Jp Yokoyama
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Publication of DE3628874A1 publication Critical patent/DE3628874A1/de
Application granted granted Critical
Publication of DE3628874C2 publication Critical patent/DE3628874C2/de
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
    • 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites

Landscapes

  • Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Hard Magnetic Materials (AREA)
DE19863628874 1985-08-29 1986-08-26 Magnetpulver fuer eine magnetische aufzeichnung hoher dichte und magnetisches aufzeichnungsmedium unter verwendung des magnetpulvers Granted DE3628874A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60190113A JP2509558B2 (ja) 1985-08-29 1985-08-29 高密度磁気記録用磁性粉およびそれを用いた磁気記録用媒体

Publications (2)

Publication Number Publication Date
DE3628874A1 DE3628874A1 (de) 1987-03-05
DE3628874C2 true DE3628874C2 (ja) 1989-10-12

Family

ID=16252595

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863628874 Granted DE3628874A1 (de) 1985-08-29 1986-08-26 Magnetpulver fuer eine magnetische aufzeichnung hoher dichte und magnetisches aufzeichnungsmedium unter verwendung des magnetpulvers

Country Status (3)

Country Link
JP (1) JP2509558B2 (ja)
KR (1) KR900004750B1 (ja)
DE (1) DE3628874A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06104574B2 (ja) * 1985-11-21 1994-12-21 日本ゼオン株式会社 塗布膜タイプの磁気記録用磁性粉
US4820433A (en) * 1986-09-05 1989-04-11 Nippon Zeon Co., Ltd. Magnetic powder for magnetic recording
JPH0582324A (ja) * 1991-02-27 1993-04-02 Toshiba Corp 磁気記録用磁性粉およびそれを用いた磁気記録媒体
JP3095047B2 (ja) * 1993-01-28 2000-10-03 戸田工業株式会社 磁気カード用マグネトプランバイト型フェライト粒子粉末及びその製造法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5667904A (en) * 1979-11-08 1981-06-08 Toshiba Corp Preparation method of megnetic powder for high density magnetic recording
US4670323A (en) * 1983-11-26 1987-06-02 Ricoh Company, Ltd. Magneto-optic recording medium having a metal oxide recording layer

Also Published As

Publication number Publication date
JPS6251026A (ja) 1987-03-05
KR900004750B1 (ko) 1990-07-05
KR870002554A (ko) 1987-03-31
DE3628874A1 (de) 1987-03-05
JP2509558B2 (ja) 1996-06-19

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee