AT355825B - Feine nadelfoermige teilchen auf eisenbasis enthaltendes magnetisches aufzeichnungs- material - Google Patents

Feine nadelfoermige teilchen auf eisenbasis enthaltendes magnetisches aufzeichnungs- material

Info

Publication number
AT355825B
AT355825B AT440573A AT440573A AT355825B AT 355825 B AT355825 B AT 355825B AT 440573 A AT440573 A AT 440573A AT 440573 A AT440573 A AT 440573A AT 355825 B AT355825 B AT 355825B
Authority
AT
Austria
Prior art keywords
magnetic recording
recording material
shaped iron
fine needle
particular magnetic
Prior art date
Application number
AT440573A
Other languages
English (en)
Other versions
ATA440573A (de
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of ATA440573A publication Critical patent/ATA440573A/de
Application granted granted Critical
Publication of AT355825B publication Critical patent/AT355825B/de

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
    • G11B5/70605—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 metals or alloys
    • G11B5/70615—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 metals or alloys containing Fe metal or alloys
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Hard Magnetic Materials (AREA)
AT440573A 1972-05-22 1973-05-21 Feine nadelfoermige teilchen auf eisenbasis enthaltendes magnetisches aufzeichnungs- material AT355825B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US255262A US3865627A (en) 1972-05-22 1972-05-22 Magnetic recording medium incorporating fine acicular iron-based particles

Publications (2)

Publication Number Publication Date
ATA440573A ATA440573A (de) 1979-08-15
AT355825B true AT355825B (de) 1980-03-25

Family

ID=22967549

Family Applications (1)

Application Number Title Priority Date Filing Date
AT440573A AT355825B (de) 1972-05-22 1973-05-21 Feine nadelfoermige teilchen auf eisenbasis enthaltendes magnetisches aufzeichnungs- material

Country Status (14)

Country Link
US (1) US3865627A (de)
JP (1) JPS5928964B2 (de)
AR (1) AR199569A1 (de)
AT (1) AT355825B (de)
AU (1) AU450059B2 (de)
BR (1) BR7303736D0 (de)
CA (1) CA999491A (de)
DE (1) DE2326258C2 (de)
FR (1) FR2185827B1 (de)
GB (1) GB1430675A (de)
IT (1) IT985108B (de)
NL (1) NL165595B (de)
PH (1) PH10737A (de)
SE (1) SE389576B (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59962B2 (ja) * 1973-08-15 1984-01-10 富士写真フイルム株式会社 ジキキロクバイタイヨウフンマツジセイザイリヨウ オヨビ セイゾウホウホウ
JPS5950722B2 (ja) * 1975-12-08 1984-12-10 ティーディーケイ株式会社 キヨウジセイキンゾクアルイハゴウキンリユウシノトクセイレツカボウシホウホウ
US4207092A (en) * 1977-03-03 1980-06-10 E. I. Du Pont De Nemours And Company Acicular α-iron particles, their preparation and recording media employing same
DE2743298A1 (de) * 1977-09-27 1979-04-05 Basf Ag Ferromagnetische, im wesentlichen aus eisen bestehende metallteilchen und verfahren zu deren herstellung
US4273807A (en) * 1979-03-19 1981-06-16 E. I. Du Pont De Nemours And Company Acicular α-iron particles and recording media employing same
DE3026696A1 (de) * 1980-07-15 1982-02-18 Basf Ag, 6700 Ludwigshafen Ferromagnetische, im wesentlichen aus eisen bestehende metallteilchen mit einem oberflaechenueberzug, verfahren zu deren herstellung sowie ihre verwendung zur herstellung von magnetischen aufzeichnungstraegern
JPS57154618A (en) * 1981-03-19 1982-09-24 Sony Corp Magnetic recording medium
JPS5853022A (ja) 1981-09-24 1983-03-29 Hitachi Maxell Ltd 磁気記録媒体
US4388367A (en) * 1981-09-28 1983-06-14 Xerox Corporation Perpendicular magnetic recording medium and fabrication
JPS58119609A (ja) * 1982-01-11 1983-07-16 Fuji Photo Film Co Ltd 磁気記録媒体
JPS58122623A (ja) * 1982-01-14 1983-07-21 Sony Corp 円盤状磁気記録媒体
JPS595423A (ja) * 1982-07-01 1984-01-12 Sony Corp 磁気記録媒体
JPS5979432A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
JPS5979431A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
US4595640A (en) * 1983-12-27 1986-06-17 Minnesota Mining And Manufacturing Company Lubricant system for magnetic recording media containing isomeric acids or alcohols
JPS60184576A (ja) * 1984-03-01 1985-09-20 Daikin Ind Ltd 磁性塗料組成物
US5219554A (en) * 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
US5069216A (en) * 1986-07-03 1991-12-03 Advanced Magnetics Inc. Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract
JPS6379232A (ja) * 1986-09-22 1988-04-09 Victor Co Of Japan Ltd 磁気記録媒体
US5106437A (en) * 1987-11-25 1992-04-21 Minnesota Mining And Manufacturing Company Electromagnetic radiation suppression cover
US5085931A (en) * 1989-01-26 1992-02-04 Minnesota Mining And Manufacturing Company Microwave absorber employing acicular magnetic metallic filaments
US5238483A (en) * 1989-01-27 1993-08-24 Toda Kogyo Corporation Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
DE68918836T2 (de) * 1989-01-27 1995-02-23 Toda Kogyo Corp Nadelförmige magnetische Teilchen aus einer Eisenlegierung für magnetische Aufzeichnung und Verfahren zu ihrer Herstellung.
US5275880A (en) * 1989-05-17 1994-01-04 Minnesota Mining And Manufacturing Company Microwave absorber for direct surface application
US5189078A (en) * 1989-10-18 1993-02-23 Minnesota Mining And Manufacturing Company Microwave radiation absorbing adhesive
US5238975A (en) * 1989-10-18 1993-08-24 Minnesota Mining And Manufacturing Company Microwave radiation absorbing adhesive
JP2005228369A (ja) * 2004-01-14 2005-08-25 Fuji Photo Film Co Ltd 磁気記録媒体の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206338A (en) * 1963-05-10 1965-09-14 Du Pont Non-pyrophoric, ferromagnetic acicular particles and their preparation
JPS5515771B1 (de) * 1967-01-12 1980-04-25
US3595694A (en) * 1967-09-18 1971-07-27 Hitachi Maxell Magnetic recording tape
JPS4839120B1 (de) * 1968-06-11 1973-11-21
US3567525A (en) 1968-06-25 1971-03-02 Du Pont Heat treated ferromagnetic particles
US3632512A (en) * 1969-02-17 1972-01-04 Eastman Kodak Co Method of preparing magnetically responsive carrier particles
US3535104A (en) * 1969-05-23 1970-10-20 Du Pont Ferromagnetic particles containing chromium

Also Published As

Publication number Publication date
US3865627A (en) 1975-02-11
AU5594473A (en) 1974-06-27
PH10737A (en) 1977-08-31
ATA440573A (de) 1979-08-15
AR199569A1 (es) 1974-09-13
FR2185827A1 (de) 1974-01-04
CA999491A (en) 1976-11-09
JPS5928964B2 (ja) 1984-07-17
JPS4943604A (de) 1974-04-24
IT985108B (it) 1974-11-30
DE2326258A1 (de) 1973-12-13
NL165595B (nl) 1980-11-17
AU450059B2 (en) 1974-06-27
GB1430675A (en) 1976-03-31
SE389576B (sv) 1976-11-08
BR7303736D0 (pt) 1974-07-25
NL7306605A (de) 1973-11-26
FR2185827B1 (de) 1977-09-02
DE2326258C2 (de) 1982-08-26

Similar Documents

Publication Publication Date Title
AT355825B (de) Feine nadelfoermige teilchen auf eisenbasis enthaltendes magnetisches aufzeichnungs- material
NL7416905A (nl) Magnetisch registratiemateriaal.
BR7310254D0 (pt) Transdutor magnetico aperfeicoado
AT315210B (de) Aufzeichnungsmaterial
TR17497A (tr) Mag netik huzme ayar tertibatlari
IT996611B (it) Minicassetta per nastro magnetico
IT991645B (it) Testina magnetica
AT321957B (de) Aufzeichnungsmaterial
IT993820B (it) Trasduttore magnetico perfezionato
IT991970B (it) Apparecchiature di registrazione e oppure riproduzione magnetica
BE806212A (fr) Transducteurs magnetiques perfectionnes
NL7409897A (nl) Magnetisch registratiemateriaal.
BR7303735D0 (pt) Meio de gravacao magnetica, e, material para fazer o mesm
IT985740B (it) Stampatrice ad aghi
CH539909A (de) Magnetischer Aufzeichnungsträger
ZA733619B (en) Amorphous magnetic material
SE398020B (sv) Permanentmagnetstav
AT329294B (de) Blattformiges magnetisches aufzeichnungsmaterial
AT325638B (de) Aufzeichnungsmaterial
BE797558A (nl) Elektrografisch registreermateriaal
BE807421A (fr) Supports d'enregistrements magnetiques
BR7301195D0 (pt) Arranjo magnetico
BE805550A (nl) Magnetisch registreermedium
IT991998B (it) Apparecchio di registrazione e ri produzione magnetica
BE766904A (nl) Magnetisch registreermateriaal

Legal Events

Date Code Title Description
ELA Expired due to lapse of time