DE2054254B2 - Verfahren zur herstellung eines magnetischen aufzeichnungstraegers - Google Patents

Verfahren zur herstellung eines magnetischen aufzeichnungstraegers

Info

Publication number
DE2054254B2
DE2054254B2 DE19702054254 DE2054254A DE2054254B2 DE 2054254 B2 DE2054254 B2 DE 2054254B2 DE 19702054254 DE19702054254 DE 19702054254 DE 2054254 A DE2054254 A DE 2054254A DE 2054254 B2 DE2054254 B2 DE 2054254B2
Authority
DE
Germany
Prior art keywords
magnetic
powder
water
film
magnetic recording
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.)
Withdrawn
Application number
DE19702054254
Other languages
German (de)
English (en)
Other versions
DE2054254A1 (de
Inventor
Goro; Fujiyama Masaaki; Kasuga Akira; Yamada Yasuyuki; Suzuki Osamu; Nakamura Matsuaki; Saga Kenji; Kato Hiroshi; Odawara Kanagawa Akashi (Japan)
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of DE2054254A1 publication Critical patent/DE2054254A1/de
Publication of DE2054254B2 publication Critical patent/DE2054254B2/de
Withdrawn legal-status Critical Current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
    • G11B5/706—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
    • 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
    • G11B5/70652—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 gamma - Fe2 O3
    • G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising 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
    • G11B5/706—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
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70689—Magnetite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
DE19702054254 1969-11-04 1970-11-04 Verfahren zur herstellung eines magnetischen aufzeichnungstraegers Withdrawn DE2054254B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44088272A JPS4827118B1 (US20110009641A1-20110113-C00185.png) 1969-11-04 1969-11-04

Publications (2)

Publication Number Publication Date
DE2054254A1 DE2054254A1 (de) 1971-05-13
DE2054254B2 true DE2054254B2 (de) 1978-01-26

Family

ID=13938245

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702054254 Withdrawn DE2054254B2 (de) 1969-11-04 1970-11-04 Verfahren zur herstellung eines magnetischen aufzeichnungstraegers

Country Status (5)

Country Link
US (1) US3794519A (US20110009641A1-20110113-C00185.png)
JP (1) JPS4827118B1 (US20110009641A1-20110113-C00185.png)
CA (1) CA928166A (US20110009641A1-20110113-C00185.png)
DE (1) DE2054254B2 (US20110009641A1-20110113-C00185.png)
GB (1) GB1333405A (US20110009641A1-20110113-C00185.png)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975569A (en) * 1972-04-04 1976-08-17 Sanyo-Kokusaku Pulp Co., Ltd. Magnetic recording element
JPS5630609B2 (US20110009641A1-20110113-C00185.png) * 1973-11-02 1981-07-16
DE2428875C2 (de) * 1974-06-14 1983-11-03 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von γ-Eisen(III)oxid
NL7901437A (nl) * 1979-02-23 1980-08-26 Philips Nv Werkwijze voor de bereiding van een magnetisch pigment van gamma-fe2o3 deeltjes.
US4758415A (en) * 1980-12-22 1988-07-19 Basf Corporation Process for removing soluble metal cations in iron oxide pigments
JPS6039671U (ja) * 1983-08-26 1985-03-19 宮田　泰次 敷布団カバ−
JPS6221963U (US20110009641A1-20110113-C00185.png) * 1985-07-25 1987-02-09
JPH01145274U (US20110009641A1-20110113-C00185.png) * 1988-03-30 1989-10-05
JPH08235562A (ja) * 1994-12-28 1996-09-13 Sony Corp 磁気記録媒体
JP4680272B2 (ja) * 2008-02-04 2011-05-11 トヨタ自動車株式会社 異方性磁性材料の製造方法および異方性磁性材料

Also Published As

Publication number Publication date
DE2054254A1 (de) 1971-05-13
JPS4827118B1 (US20110009641A1-20110113-C00185.png) 1973-08-18
US3794519A (en) 1974-02-26
CA928166A (en) 1973-06-12
GB1333405A (en) 1973-10-10

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Legal Events

Date Code Title Description
8228 New agent

Free format text: KOHLER, M., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8230 Patent withdrawn