GB717537A - Magnetic impulse record carriers - Google Patents

Magnetic impulse record carriers

Info

Publication number
GB717537A
GB717537A GB8550/52A GB855052A GB717537A GB 717537 A GB717537 A GB 717537A GB 8550/52 A GB8550/52 A GB 8550/52A GB 855052 A GB855052 A GB 855052A GB 717537 A GB717537 A GB 717537A
Authority
GB
United Kingdom
Prior art keywords
solution
ferrous
added
sulphates
nickel
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
GB8550/52A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 AG filed Critical Agfa AG
Publication of GB717537A publication Critical patent/GB717537A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2666—Other ferrites containing nickel, copper or cobalt
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
GB8550/52A 1951-04-09 1952-04-03 Magnetic impulse record carriers Expired GB717537A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE717537X 1951-04-09

Publications (1)

Publication Number Publication Date
GB717537A true GB717537A (en) 1954-10-27

Family

ID=6626729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8550/52A Expired GB717537A (en) 1951-04-09 1952-04-03 Magnetic impulse record carriers

Country Status (3)

Country Link
BE (1) BE510462A (OSRAM)
FR (1) FR1053344A (OSRAM)
GB (1) GB717537A (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100158A (en) * 1960-11-02 1963-08-06 Rca Corp Methods for obtaining films of magnetic spinel crystals on substrates
US3139354A (en) * 1961-03-31 1964-06-30 Rca Corp Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof
US3149995A (en) * 1961-04-28 1964-09-22 Rca Corp Magnetic recording element and method of preparation thereof
US3179533A (en) * 1961-10-04 1965-04-20 Rusch Adolphe Magnetic tape with reinforced backing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978414A (en) * 1951-04-09 1961-04-04 Agfa Ag Magnetic impulse record carrier
DE1057256B (de) * 1955-10-29 1959-05-14 Steatit Magnesia Ag Verfahren zur Herstellung von ferromagnetischen Ferritkoerpern mit eingeschnuerter Hystereseschleife
DE1137667B (de) * 1957-02-16 1962-10-04 Dr Yoshimitsu Kikuchi Verfahren zur Herstellung ferromagnetischer Koerper fuer Magnetostriktionsschwinger
US3031341A (en) * 1958-01-23 1962-04-24 Ibm High density magnetic recording tape
US3078234A (en) * 1958-04-24 1963-02-19 Jr Charles M Davis Magnetostrictive ferrite
DE1202206B (de) * 1962-09-28 1965-09-30 Siemens Ag Verwendung von Eisen(II)-chlorid-Abfall-loesungen zur Herstellung von ferromagnetischen Ferriten

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100158A (en) * 1960-11-02 1963-08-06 Rca Corp Methods for obtaining films of magnetic spinel crystals on substrates
US3139354A (en) * 1961-03-31 1964-06-30 Rca Corp Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof
US3149995A (en) * 1961-04-28 1964-09-22 Rca Corp Magnetic recording element and method of preparation thereof
US3150995A (en) * 1961-04-28 1964-09-29 Rca Corp Magnetic recording element having diisocyanate-based elastomer binder and method forpreparing same
US3179533A (en) * 1961-10-04 1965-04-20 Rusch Adolphe Magnetic tape with reinforced backing

Also Published As

Publication number Publication date
FR1053344A (fr) 1954-02-02
BE510462A (OSRAM)

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