NL7812381A - Magnetisch registreermateriaal. - Google Patents

Magnetisch registreermateriaal.

Info

Publication number
NL7812381A
NL7812381A NL7812381A NL7812381A NL7812381A NL 7812381 A NL7812381 A NL 7812381A NL 7812381 A NL7812381 A NL 7812381A NL 7812381 A NL7812381 A NL 7812381A NL 7812381 A NL7812381 A NL 7812381A
Authority
NL
Netherlands
Prior art keywords
magnetic recording
recording material
magnetic
recording
Prior art date
Application number
NL7812381A
Other languages
English (en)
Original Assignee
Agfa Gevaert Nv
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 Nv filed Critical Agfa Gevaert Nv
Publication of NL7812381A publication Critical patent/NL7812381A/nl

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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
NL7812381A 1978-01-13 1978-12-20 Magnetisch registreermateriaal. NL7812381A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2801452A DE2801452C2 (de) 1978-01-13 1978-01-13 Magnetisches Aufzeichnungsmaterial

Publications (1)

Publication Number Publication Date
NL7812381A true NL7812381A (nl) 1979-06-29

Family

ID=6029475

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7812381A NL7812381A (nl) 1978-01-13 1978-12-20 Magnetisch registreermateriaal.

Country Status (9)

Country Link
US (1) US4323621A (nl)
JP (1) JPS5498202A (nl)
BE (1) BE872709A (nl)
CA (1) CA1137297A (nl)
DE (1) DE2801452C2 (nl)
FR (1) FR2414782B1 (nl)
GB (1) GB2015376B (nl)
IT (1) IT1114313B (nl)
NL (1) NL7812381A (nl)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56148729A (en) * 1980-04-21 1981-11-18 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57134907A (en) * 1981-02-13 1982-08-20 Fuji Photo Film Co Ltd Magnetic recording medium
JPS5817539A (ja) * 1981-07-21 1983-02-01 Sony Corp 磁気記録媒体
JPS58203625A (ja) * 1982-05-24 1983-11-28 Toshiba Corp 磁気記録媒体
JPS5961105A (ja) * 1982-09-30 1984-04-07 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59172144A (ja) * 1983-03-20 1984-09-28 Hitachi Maxell Ltd 磁気記録媒体
DE3475129D1 (en) * 1983-12-27 1988-12-15 Memorex Corp Protection of thin cobaltous films for magnetic recording
JPH0719369B2 (ja) * 1984-02-02 1995-03-06 日本ビクター株式会社 磁気記録媒体及びその製造法
JPS60229220A (ja) * 1984-03-09 1985-11-14 Toshiba Corp 磁気記録媒体
JPS60204393A (ja) * 1984-03-30 1985-10-15 Res Dev Corp Of Japan 記録媒体
CA1238446A (en) * 1984-08-09 1988-06-21 Union Carbide Corporation Flexible, self-crosslinking binders
JPH0682459B2 (ja) * 1987-01-30 1994-10-19 富士写真フイルム株式会社 磁気記録媒体
JP2819029B2 (ja) * 1988-09-19 1998-10-30 コニカ株式会社 磁気記録媒体
JP2632197B2 (ja) * 1988-10-14 1997-07-23 富士写真フイルム株式会社 磁気記録媒体
EP0406449A4 (en) * 1989-01-19 1991-12-04 Konica Corporation Magnetic recording medium
US5254404A (en) * 1989-07-12 1993-10-19 Fuji Photo Film Co., Ltd. Magnetic recording medium comprising ferromagnetic particles having crystallite size of less than 450 angstroms and a specified polyurethane binder
JPH03276419A (ja) * 1990-03-27 1991-12-06 Konica Corp 磁気記録媒体
JP3051464B2 (ja) * 1991-01-08 2000-06-12 ティーディーケイ株式会社 磁気記録媒体の製造法
US5487954A (en) * 1991-12-04 1996-01-30 National Science Council Non-acicular modified high coercivity iron oxides for high density magnetic recording and the processes of making the same
US7068464B2 (en) * 2003-03-21 2006-06-27 Storage Technology Corporation Double sided magnetic tape

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792847A (fr) * 1971-12-17 1973-06-15 Bayer Ag Procede de preparation d'oxydes de fer magnetiques aciculaires
BE795896A (fr) * 1972-02-24 1973-08-23 Eastman Kodak Co Materiau pour l'enregistrement magnetique a plusieurs couches et son procede de preparation
FR2199155B1 (nl) * 1972-09-13 1978-04-28 Kodak Pathe
US3928709A (en) * 1972-03-01 1975-12-23 Eastman Kodak Co Ferrous ferric oxides, process for preparing same and their use in magnetic recording
JPS5630608B2 (nl) * 1973-08-27 1981-07-16
US3909240A (en) * 1973-09-28 1975-09-30 Graham Magnetics Inc Method of producing acicular metal crystals
US4237189A (en) * 1973-10-31 1980-12-02 Robert J. Deffeyes Polymodal magnetic recording media process for making and verifying the same and compositions useful therein
JPS5142990A (nl) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
JPS5162704A (en) * 1974-10-29 1976-05-31 Fuji Photo Film Co Ltd Jikikirokutaino seizoho
DE2456960C3 (de) * 1974-12-03 1980-12-04 Basf Ag, 6700 Ludwigshafen Schichtmagnetogrammträger
US4200678A (en) * 1974-12-31 1980-04-29 Basf Aktiengesellschaft Flexible multilayer magnetic recording medium
GB1504293A (en) * 1975-02-12 1978-03-15 Emi Ltd Method of forming magnetic media
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
DE2556188C3 (de) * 1975-12-13 1979-07-05 Basf Ag, 6700 Ludwigshafen Flexible Mehrschichtmagnetogrammträger
DE2646348C2 (de) * 1976-10-14 1986-08-28 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern
FR2377418A1 (fr) * 1977-01-13 1978-08-11 Roussel Uclaf Nouveaux derives steroides 4,9-dieniques 11b-substitues, leur procede de preparation et leur application comme medicaments
DE2801395C2 (de) * 1978-01-13 1982-04-22 Bayer Ag, 5090 Leverkusen Thermisch stabilisiertes ferrimagnetisches Eisenoxid
US4237506A (en) * 1978-04-03 1980-12-02 Graham Magnetics Inc. Polymodal magnetic recording member
US4165232A (en) * 1978-09-15 1979-08-21 Basf Aktiengesellschaft Manufacture of ferromagnetic metal particles essentially consisting of iron
US4210940A (en) * 1978-09-29 1980-07-01 Bell & Howell Company Variable format tape replay system

Also Published As

Publication number Publication date
IT1114313B (it) 1986-01-27
FR2414782B1 (fr) 1987-05-22
FR2414782A1 (fr) 1979-08-10
IT7947587A0 (it) 1979-01-11
JPH0247009B2 (nl) 1990-10-18
DE2801452C2 (de) 1985-03-28
GB2015376B (en) 1982-03-10
US4323621A (en) 1982-04-06
GB2015376A (en) 1979-09-12
CA1137297A (en) 1982-12-14
DE2801452A1 (de) 1979-09-06
JPS5498202A (en) 1979-08-03
BE872709A (nl) 1979-06-13

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BV The patent application has lapsed