FR1076019A - Pièce d'enregistrement magnétique et procédé pour son obtention - Google Patents

Pièce d'enregistrement magnétique et procédé pour son obtention

Info

Publication number
FR1076019A
FR1076019A FR1076019DA FR1076019A FR 1076019 A FR1076019 A FR 1076019A FR 1076019D A FR1076019D A FR 1076019DA FR 1076019 A FR1076019 A FR 1076019A
Authority
FR
France
Prior art keywords
obtaining
magnetic recording
recording piece
piece
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
Other languages
English (en)
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Application granted granted Critical
Publication of FR1076019A publication Critical patent/FR1076019A/fr
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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/18—Electroplating using modulated, pulsed or reversing current
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/615—Microstructure of the layers, e.g. mixed structure
    • C25D5/617—Crystalline layers
    • 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
    • G11B5/858—Producing a magnetic layer by electro-plating or electroless plating
    • 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
    • H01F41/24—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 from liquids
    • H01F41/26—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 from liquids using electric currents, e.g. electroplating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
FR1076019D 1952-04-22 1953-04-21 Pièce d'enregistrement magnétique et procédé pour son obtention Expired FR1076019A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US283652A US2730491A (en) 1952-04-22 1952-04-22 Method of electroplating cobalt-nickel composition

Publications (1)

Publication Number Publication Date
FR1076019A true FR1076019A (fr) 1954-10-21

Family

ID=23087005

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1076019D Expired FR1076019A (fr) 1952-04-22 1953-04-21 Pièce d'enregistrement magnétique et procédé pour son obtention

Country Status (6)

Country Link
US (1) US2730491A (fr)
CH (1) CH311229A (fr)
DE (1) DE956903C (fr)
FR (1) FR1076019A (fr)
GB (1) GB733252A (fr)
NL (1) NL101173C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3569946A (en) * 1958-09-25 1971-03-09 Burroughs Corp Magnetic material and data store
US3031648A (en) * 1960-05-25 1962-04-24 Ncr Co Magnetic data storage device
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
US3867106A (en) * 1973-12-26 1975-02-18 Honeywell Inc Magnetic thin film data storage device and method of making
JPS6033289B2 (ja) * 1979-07-18 1985-08-02 松下電器産業株式会社 金属薄膜型磁気記録媒体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB584977A (en) * 1944-09-29 1947-01-28 London Scandinavian Metall Improvements in or relating to the electro-deposition of nickel and nickel alloys
US2619454A (en) * 1945-08-30 1952-11-25 Brush Dev Co Method of manufacturing a magnetic recording medium by electrodeposition
US2451340A (en) * 1948-03-06 1948-10-12 Westinghouse Electric Corp Electroplating

Also Published As

Publication number Publication date
DE956903C (de) 1957-01-24
CH311229A (fr) 1955-11-30
GB733252A (en) 1955-07-06
US2730491A (en) 1956-01-10
NL101173C (fr)

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