JPS5676510A - Manufacture of magnetic recording material - Google Patents

Manufacture of magnetic recording material

Info

Publication number
JPS5676510A
JPS5676510A JP15291279A JP15291279A JPS5676510A JP S5676510 A JPS5676510 A JP S5676510A JP 15291279 A JP15291279 A JP 15291279A JP 15291279 A JP15291279 A JP 15291279A JP S5676510 A JPS5676510 A JP S5676510A
Authority
JP
Japan
Prior art keywords
particles
iron oxide
water soluble
acicularity
aqueously
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.)
Pending
Application number
JP15291279A
Other languages
English (en)
Inventor
Yasumichi Tokuoka
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP15291279A priority Critical patent/JPS5676510A/ja
Priority to NL8006279A priority patent/NL8006279A/nl
Priority to US06/210,355 priority patent/US4309459A/en
Priority to DE19803044772 priority patent/DE3044772A1/de
Priority to GB8038009A priority patent/GB2063845A/en
Publication of JPS5676510A publication Critical patent/JPS5676510A/ja
Pending 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/065—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder obtained by a reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
JP15291279A 1979-11-28 1979-11-28 Manufacture of magnetic recording material Pending JPS5676510A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15291279A JPS5676510A (en) 1979-11-28 1979-11-28 Manufacture of magnetic recording material
NL8006279A NL8006279A (nl) 1979-11-28 1980-11-18 Werkwijze voor het bereiden van een magnetisch poeder voor een magnetisch registreermedium.
US06/210,355 US4309459A (en) 1979-11-28 1980-11-25 Process for producing SiO2 coated iron oxide powder for use in the preparation of acicular magnetic iron or iron oxide powder
DE19803044772 DE3044772A1 (de) 1979-11-28 1980-11-27 Verfahren zur herstellung eines magnetpulvers fuer ein magnetisches aufzeichnungsmedium
GB8038009A GB2063845A (en) 1979-11-28 1980-11-27 Producing magnetic powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15291279A JPS5676510A (en) 1979-11-28 1979-11-28 Manufacture of magnetic recording material

Publications (1)

Publication Number Publication Date
JPS5676510A true JPS5676510A (en) 1981-06-24

Family

ID=15550851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15291279A Pending JPS5676510A (en) 1979-11-28 1979-11-28 Manufacture of magnetic recording material

Country Status (5)

Country Link
US (1) US4309459A (ja)
JP (1) JPS5676510A (ja)
DE (1) DE3044772A1 (ja)
GB (1) GB2063845A (ja)
NL (1) NL8006279A (ja)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375373A (en) * 1978-12-29 1983-03-01 Toro Ganryo Kogyo Co., Ltd. Method of coating inorganic pigments (ultramarine and bronze powder) with dense amorphous silica
US4400337A (en) * 1981-01-10 1983-08-23 Hitachi Maxell, Ltd. Method for production of metal magnetic particles
DE3274777D1 (en) * 1981-10-01 1987-01-29 Agency Ind Science Techn Magnetic particles and method of production thereof
JPS5947301A (ja) * 1982-09-08 1984-03-17 Fuji Photo Film Co Ltd 強磁性金属粉末
JPS5980901A (ja) * 1982-11-01 1984-05-10 Fuji Photo Film Co Ltd 強磁性金属粉末の製造法
US4464196A (en) * 1983-08-24 1984-08-07 Hercules Incorporated Acicular ferromagnetic metal particles
JPS6081804A (ja) * 1983-10-12 1985-05-09 Toda Kogyo Corp 磁気記録用六角板状Ｂａフエライト微粒子粉末及びその製造法
JPS60137002A (ja) * 1983-12-26 1985-07-20 Toda Kogyo Corp 磁気記録用板状Ｂａフエライト微粒子粉末の製造法
JP2582764B2 (ja) * 1986-02-05 1997-02-19 バスフ アクチェン ゲゼルシャフト 本質的に鉄から成る針状強磁性金属粉末の製造方法
JPS62278131A (ja) * 1986-05-28 1987-12-03 Canon Inc ケイ素元素を有する磁性酸化鉄
DE3743039A1 (de) * 1987-12-18 1989-07-13 Basf Ag Nadelfoermige, im wesentlichen aus eisen bestehende, ferromagnetische metallteilchen und verfahren zu deren herstellung
DE68920778T2 (de) * 1988-05-24 1995-05-18 Anagen Uk Ltd Magnetisch anziehbare Teilchen und Herstellungsverfahren.
US5069972A (en) * 1988-09-12 1991-12-03 Versic Ronald J Moldable microcapsule that contains a high percentage of solid core material, and method of manufacture thereof
GB2227874A (en) * 1988-11-22 1990-08-08 Lam Philip Y T A video and/or audio cassette assembly
KR920016348A (ko) * 1991-02-05 1992-09-24 도오사끼 시노부 고순도 산화철 및 그 제조방법
US5965194A (en) * 1992-01-10 1999-10-12 Imation Corp. Magnetic recording media prepared from magnetic particles having an extremely thin, continuous, amorphous, aluminum hydrous oxide coating
DE19520398B4 (de) * 1995-06-08 2009-04-16 Roche Diagnostics Gmbh Magnetisches Pigment
KR100463475B1 (ko) 1995-06-08 2005-06-22 로셰 디아그노스틱스 게엠베하 자기성피그먼트
DE19601412C2 (de) * 1996-01-17 1999-07-22 Emtec Magnetics Gmbh Ferromagnetische Pigmente
AU6021798A (en) 1997-01-21 1998-08-07 W.R. Grace & Co.-Conn. Silica adsorbent on magnetic substrate
DE19743518A1 (de) * 1997-10-01 1999-04-15 Roche Diagnostics Gmbh Automatisierbare universell anwendbare Probenvorbereitungsmethode
JP2003514383A (ja) * 1999-11-17 2003-04-15 ロシュ ダイアグノスティクス ゲゼルシャフト ミット ベシュレンクテル ハフツング 磁性ガラス粒子、それらの製造方法、及びそれらの使用
ATE419629T1 (de) * 2000-03-24 2009-01-15 Qiagen Gmbh Poröse ferro- oder ferrimagnetische glasteilchen für molekültrennung
US7166680B2 (en) * 2004-10-06 2007-01-23 Advanced Cardiovascular Systems, Inc. Blends of poly(ester amide) polymers
JP2013503352A (ja) * 2009-08-31 2013-01-31 エムバイオ ダイアグノスティクス，インコーポレイティド 統合されたサンプル調製及び検体検出
US9067833B2 (en) 2012-06-21 2015-06-30 Toyota Motor Engineering & Manufacturing North America, Inc. Iron oxide and silica magnetic core

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794292A (fr) * 1972-01-21 1973-07-19 Bayer Ag Procede de preparation d'oxydes de fer magnetiques aciculaires finement divises
IT1028343B (it) * 1975-01-14 1979-01-30 Montedison Spa Procedimento per la preparazione di ossido ferrico aciculare ferri magnetico
DE2611281A1 (de) * 1975-03-17 1976-09-30 Hitachi Ltd Verfahren zur herstellung von ferromagnetischem metallpulver
JPS6017802B2 (ja) * 1975-09-05 1985-05-07 株式会社日立製作所 強磁性金属粉末の製造方法
US4169912A (en) * 1975-10-02 1979-10-02 Dynamit Nobel Aktiengesellschaft Iron oxide magnetic pigments for the production of magnetic coatings
US4133677A (en) * 1976-04-05 1979-01-09 Toda Kogyo Corp. Process for producing acicular magnetic metallic particle powder
US4136158A (en) * 1976-11-01 1979-01-23 Toda Kogyo Corp. Production of acicular magnetic iron oxides

Also Published As

Publication number Publication date
GB2063845A (en) 1981-06-10
US4309459A (en) 1982-01-05
NL8006279A (nl) 1981-07-01
DE3044772A1 (de) 1981-06-19

Similar Documents

Publication Publication Date Title
JPS5676510A (en) Manufacture of magnetic recording material
ATE48384T1 (de) Verfahren zur herstellung eines antimonhaltigen oxidkatalysators mit festigkeit.
JPS54106895A (en) Ferromagnetic powder
JPS5583209A (en) Ferromagnetic powder and preparing the same
JPS54114500A (en) Manufacture of magnetic iron oxide for seed coat
JPS54124297A (en) Ferromagnetic powder
JPS5247702A (en) Process for producing a recording medium of magnetic iron oxide
JPS5676509A (en) Manufacture of magnetic powder
JPS54138894A (en) Production of magnetic iron oxide powder
JPS5572007A (en) Magnetic material
JPS5583207A (en) Preparation of ferromagnetic powder
JPS5613409A (en) Manufacture of ferromagnetic alloy powder
JPS5384196A (en) Manufacturing method of magnetic iron oxide
JPS5613411A (en) Manufacture of magnetic powder of metallic iron
JPS56134522A (en) Preparation of magnetic powder for magnetic recording use
JPS5625908A (en) Preparation of magnetic grain powder consisting of needle crystal alloy of iron and cobalt
JPS5535975A (en) Manufacture of adsorbent from kanuma soil
JPS5625909A (en) Preparation of magnetic grain powder consisting of needle crystal alloy of iron, cobalt and zinc
JPS5684404A (en) Manufacture of magnetic alloy powder composed primarily of iron or metallic iron magnetic powder
JPS54128498A (en) Treating method for cobalt-containing iron oxide magnetic powder
JPS59197506A (ja) 磁気記録用金属粉の製造方法
JPS57188494A (en) Manufacture of blank carbon body for pulling up crystal
JPS5723003A (en) Manufacture of magnetic metal powder
JPS6468904A (en) Manufacture of magnetic iron oxide powder for magnetic recording
JPS5590422A (en) Preparation of needle-shaped, ferromagnetic iron oxide particle powder for magnetic memory material with excellent dispersibility