CH249899A - Sound carriers for magnetic recordings. - Google Patents

Sound carriers for magnetic recordings.

Info

Publication number
CH249899A
CH249899A CH249899DA CH249899A CH 249899 A CH249899 A CH 249899A CH 249899D A CH249899D A CH 249899DA CH 249899 A CH249899 A CH 249899A
Authority
CH
Switzerland
Prior art keywords
sound carriers
magnetic recordings
sound
recordings
magnetic
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Ipsophon-Patentgesellschaft
Original Assignee
Ipsophon Patentgesellschaft 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 Ipsophon Patentgesellschaft Ag filed Critical Ipsophon Patentgesellschaft Ag
Publication of CH249899A publication Critical patent/CH249899A/en

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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/642—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent self supporting magnetic material, e.g. magnetisable wires

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Hard Magnetic Materials (AREA)

Description

  

  Tonträger für magnetische Aufzeichnungen.  
EMI0001.0001     
  
   
EMI0001.0002     
  
            bekannt    und gehören zur Gruppe der als       unmagnetiu.ch    bezeichneten     Stähle.    Es hat  sieh     gezeügt,        dass'infolgeder    Rostbeständigkeit  solcher     Stähle    ihre Oberflächenbeschaffen-.       heit        sich        auch        nach        längerem    Gebrauch nicht  verändert.

   Ein     weiterer        Vorteil    derselben  besteht darin, dass sie     neben    der kleinen Re  manenz eine grosse     goerzitivkraft    von     bei-          spielsweise        1'00        Örsted        besitzen    können.

   Es  ist bekannt, dass durch diese     Eigenschaft    die       insbesondere    bei     Quermagnetisierung    in  Erscheinung tretende     Entmagnetssierung    des       Tonträgers,    durch welche die Wiedergabe  spannung herabgesetzt wird, auf ein erträg  liches Mass reduziert werden kann.



  Sound carriers for magnetic recordings.
EMI0001.0001
  
   
EMI0001.0002
  
            known and belong to the group of steels known as unmagnetiu.ch. It has shown that it is because of the rust resistance of such steels that their surface properties. does not change even after prolonged use.

   Another advantage of the same is that, in addition to the small remuneration, they can have a large governmental power of, for example, 1'00 Örsted.

   It is known that this property can be used to reduce the demagnetization of the sound carrier, which occurs particularly in the case of transverse magnetization and which lowers the playback voltage, to a tolerable level.

Claims (1)

PATENTANSPRUCH: Tonträger für ma,-netis,che, insbesondere durch Quermagnetisierung erzeugte Auf zeiohnungen, der eine .geringe Permeabilität besitzt, dadurch gekennzeichnet, dass er au.-, einem massiven, aus rostbeständigem Stahl mit unvollkommen austenitischem Gefüge hergestellten Körper von draht- oder band färmiger Gestalt besteht, welchem :Stahl eine unter 500 Gauss gelegene Sättigunggsremanenz entspricht. PATENT CLAIM: Sound carrier for ma, -netis, che, in particular on zeiohnungen produced by transverse magnetization, which possesses a low permeability, characterized in that it is made of wire or Ribbon shaped shape, to which: Steel corresponds to a saturation remanence below 500 Gauss.
CH249899D 1944-10-21 1944-10-21 Sound carriers for magnetic recordings. CH249899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH249899T 1944-10-21

Publications (1)

Publication Number Publication Date
CH249899A true CH249899A (en) 1947-07-31

Family

ID=4467835

Family Applications (1)

Application Number Title Priority Date Filing Date
CH249899D CH249899A (en) 1944-10-21 1944-10-21 Sound carriers for magnetic recordings.

Country Status (1)

Country Link
CH (1) CH249899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891626C (en) * 1951-06-03 1953-10-01 Stahlwerk Ergste Ag Process for the production of magnetogram carriers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891626C (en) * 1951-06-03 1953-10-01 Stahlwerk Ergste Ag Process for the production of magnetogram carriers

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