CA1020489A - Magnetic recording materials and process for preparation thereof - Google Patents

Magnetic recording materials and process for preparation thereof

Info

Publication number
CA1020489A
CA1020489A CA162,427A CA162427A CA1020489A CA 1020489 A CA1020489 A CA 1020489A CA 162427 A CA162427 A CA 162427A CA 1020489 A CA1020489 A CA 1020489A
Authority
CA
Canada
Prior art keywords
preparation
magnetic recording
recording materials
materials
magnetic
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
CA162,427A
Other languages
English (en)
French (fr)
Other versions
CA162427S (en
Inventor
Satoshi Kawai
Hajime Sato
Toshimatsu Sakai
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.)
Pilot Corp
Original Assignee
Pilot Man Nen Hitsu KK
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 Pilot Man Nen Hitsu KK filed Critical Pilot Man Nen Hitsu KK
Application granted granted Critical
Publication of CA1020489A publication Critical patent/CA1020489A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/045—Anodisation of aluminium or alloys based thereon for forming AAO templates
    • 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
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
CA162,427A 1972-04-14 1973-01-30 Magnetic recording materials and process for preparation thereof Expired CA1020489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47037421A JPS5121562B2 (OSRAM) 1972-04-14 1972-04-14

Publications (1)

Publication Number Publication Date
CA1020489A true CA1020489A (en) 1977-11-08

Family

ID=12497044

Family Applications (1)

Application Number Title Priority Date Filing Date
CA162,427A Expired CA1020489A (en) 1972-04-14 1973-01-30 Magnetic recording materials and process for preparation thereof

Country Status (9)

Country Link
JP (1) JPS5121562B2 (OSRAM)
BE (1) BE798227A (OSRAM)
CA (1) CA1020489A (OSRAM)
CH (1) CH570659A5 (OSRAM)
DE (1) DE2309594C3 (OSRAM)
FR (1) FR2179731B1 (OSRAM)
GB (1) GB1418933A (OSRAM)
IT (1) IT977418B (OSRAM)
NL (1) NL157443B (OSRAM)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939966U (OSRAM) * 1972-07-10 1974-04-08
JPS51148407A (en) * 1975-06-13 1976-12-20 Mitsubishi Electric Corp Magnetic recording medium
DE2616662C2 (de) * 1976-04-15 1984-02-02 Dornier System Gmbh, 7990 Friedrichshafen Verfahren zur herstellung einer selektiven solarabsorberschicht auf aluminium
DE2658956A1 (de) * 1976-12-24 1978-06-29 Ibm Deutschland Vertikales magnetisches informationsaufzeichnungssystem
JPS5671821A (en) * 1979-11-14 1981-06-15 Hitachi Ltd Substrate for magnetic disc and its manufacture
DE3035148A1 (de) * 1980-09-18 1982-04-22 Ibm Deutschland Gmbh, 7000 Stuttgart Magnetischer aufzeichnungstraeger fuer vertikales aufzeichnen
JPS5746320A (en) * 1980-09-01 1982-03-16 Pilot Pen Co Ltd:The Magnetic recording material and its production
JPS57158013A (en) * 1981-03-24 1982-09-29 Nec Corp Magnetic recording body
EP0076142B1 (en) * 1981-09-28 1987-09-16 Xerox Corporation Post treatment of perpendicular magnetic recording media
JPS59130406A (ja) * 1983-01-17 1984-07-27 Nippon Telegr & Teleph Corp <Ntt> 粉末永久磁石の製造方法
JPS59207029A (ja) * 1983-05-10 1984-11-24 Nippon Gakki Seizo Kk 磁気記録媒体およびその製法
US4808279A (en) * 1986-10-02 1989-02-28 The University Of Toronto Innovations Foundation Process for preparing magnetic recording material
WO1996037885A1 (de) * 1995-05-26 1996-11-28 International Business Machines Corporation Direkt kontaktierbare platte für vertikale magnetische datenspeicherung
FR3044329A1 (fr) * 2015-11-27 2017-06-02 Constellium Neuf-Brisach Procede de depot electrolytique d'une couche de conversion sous courant alternatif

Also Published As

Publication number Publication date
NL157443B (nl) 1978-07-17
JPS5121562B2 (OSRAM) 1976-07-03
FR2179731A1 (OSRAM) 1973-11-23
DE2309594A1 (de) 1973-10-18
JPS4942305A (OSRAM) 1974-04-20
NL7301706A (OSRAM) 1973-10-16
GB1418933A (en) 1975-12-24
IT977418B (it) 1974-09-10
DE2309594B2 (de) 1975-01-16
FR2179731B1 (OSRAM) 1976-09-10
BE798227A (fr) 1973-07-31
CH570659A5 (OSRAM) 1975-12-15
DE2309594C3 (de) 1975-08-28

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