DE1449692B2 - Magnetisches aufzeichnungsverfahren - Google Patents

Magnetisches aufzeichnungsverfahren

Info

Publication number
DE1449692B2
DE1449692B2 DE1964A0045360 DEA0045360A DE1449692B2 DE 1449692 B2 DE1449692 B2 DE 1449692B2 DE 1964A0045360 DE1964A0045360 DE 1964A0045360 DE A0045360 A DEA0045360 A DE A0045360A DE 1449692 B2 DE1449692 B2 DE 1449692B2
Authority
DE
Germany
Prior art keywords
magnetic
magnetic recording
magnetizable
tape
recording method
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.)
Withdrawn
Application number
DE1964A0045360
Other languages
German (de)
English (en)
Other versions
DE1449692A1 (de
Inventor
Joachim Dr 8022 Grün wald Eichler Wolfgang Dr Krones Friedrich Dr 5090 Leverkusen Greiner
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
Priority to DE1964A0045360 priority Critical patent/DE1449692B2/de
Priority to US432796A priority patent/US3364496A/en
Priority to CH222665A priority patent/CH433796A/de
Priority to GB7329/65A priority patent/GB1095135A/en
Priority to BE660323D priority patent/BE660323A/xx
Priority to FR7257A priority patent/FR1451260A/fr
Publication of DE1449692A1 publication Critical patent/DE1449692A1/de
Publication of DE1449692B2 publication Critical patent/DE1449692B2/de
Priority to US39077773 priority patent/USRE28290E/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/16—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 soft-magnetic materials metals or alloys in the form of sheets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
    • 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
    • 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
    • G11B5/70636—CrO2
    • 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
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
    • G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
DE1964A0045360 1964-02-29 1964-02-29 Magnetisches aufzeichnungsverfahren Withdrawn DE1449692B2 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE1964A0045360 DE1449692B2 (de) 1964-02-29 1964-02-29 Magnetisches aufzeichnungsverfahren
US432796A US3364496A (en) 1964-02-29 1965-02-15 Curie point magnetic recording process
CH222665A CH433796A (de) 1964-02-29 1965-02-18 Magnetisches Aufzeichnungsverfahren
GB7329/65A GB1095135A (en) 1964-02-29 1965-02-19 A magnetic recording process
BE660323D BE660323A (enExample) 1964-02-29 1965-02-26
FR7257A FR1451260A (fr) 1964-02-29 1965-02-26 Procédé d'enregistrement magnétique
US39077773 USRE28290E (en) 1964-02-29 1973-08-23 Curie point magnetic recording process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964A0045360 DE1449692B2 (de) 1964-02-29 1964-02-29 Magnetisches aufzeichnungsverfahren

Publications (2)

Publication Number Publication Date
DE1449692A1 DE1449692A1 (de) 1969-12-18
DE1449692B2 true DE1449692B2 (de) 1971-04-01

Family

ID=6934681

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1964A0045360 Withdrawn DE1449692B2 (de) 1964-02-29 1964-02-29 Magnetisches aufzeichnungsverfahren

Country Status (6)

Country Link
US (2) US3364496A (enExample)
BE (1) BE660323A (enExample)
CH (1) CH433796A (enExample)
DE (1) DE1449692B2 (enExample)
FR (1) FR1451260A (enExample)
GB (1) GB1095135A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541293A1 (de) * 1985-11-22 1987-05-27 Joachim Dr Greiner Loeschverfahren fuer magnetische, bewegte, flaechige informationsspeicher

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB963102A (en) * 1962-04-02 1964-07-08 Hitachi Ltd Improvements relating to the duplication of magnetic recordings
DE1473353A1 (de) * 1964-12-08 1968-12-19 Agfa Gevaert Ag Magnetographieverfahren
US3566786A (en) * 1965-01-29 1971-03-02 Helmut Taufer Image producing apparatus
US3496304A (en) * 1966-12-05 1970-02-17 Magnavox Co Double transfer curie-point and magnetic bias tape copy system
US3541577A (en) * 1967-06-28 1970-11-17 Bell & Howell Co Method of curie point recording
US3626114A (en) * 1969-03-10 1971-12-07 California Inst Of Techn Thermomagnetic recording and magneto-optic playback system
US3632898A (en) * 1969-06-16 1972-01-04 Memorex Corp Thermomagnetic copying of magnetic records with cooling of copy medium carrier
US3610721A (en) * 1969-10-29 1971-10-05 Du Pont Magnetic holograms
JPS5125139B1 (enExample) * 1970-11-06 1976-07-29
JPS5125141B1 (enExample) * 1970-11-13 1976-07-29
US3824617A (en) * 1971-04-16 1974-07-16 Matsushita Electric Industrial Co Ltd Magnetic tape copying apparatus
US3777075A (en) * 1971-09-17 1973-12-04 Cons Video Systems High speed thermal duplication of magnetic tape
US3725611A (en) * 1971-09-30 1973-04-03 P Smaller Double coated storage medium for contact transfer recording
JPS5311372B2 (enExample) * 1973-05-11 1978-04-21
NL7307626A (enExample) * 1973-06-01 1974-12-03
CA1076251A (en) * 1975-04-18 1980-04-22 Mitsuaki Ono Magnetic tape copying method and apparatus
FR2554626A1 (fr) * 1983-11-08 1985-05-10 Oreshkin Valery Procede d'obtention d'une matrice pour le tirage d'un enregistrement magnetique, matrice obtenue par ledit procede, procede de tirage d'un enregistrement magnetique au moyen de cette matrice, et porteur d'enregistrement magnetique comportant l'enregistrement obtenu par ledit procede de tirage
AU660986B2 (en) * 1991-07-19 1995-07-13 Hightree Media Corporation Tape duplicating system
US5507067A (en) 1994-05-12 1996-04-16 Newtronics Pty Ltd. Electronic vacuum cleaner control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738383A (en) * 1948-06-21 1956-03-13 Minnesota Mining & Mfg Method and apparatus for duplicating magnetic recordings and magnetic tape record members
US2915594A (en) * 1954-06-01 1959-12-01 Rca Corp Magnetic recording system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541293A1 (de) * 1985-11-22 1987-05-27 Joachim Dr Greiner Loeschverfahren fuer magnetische, bewegte, flaechige informationsspeicher

Also Published As

Publication number Publication date
BE660323A (enExample) 1965-08-26
FR1451260A (fr) 1966-01-07
GB1095135A (en) 1967-12-13
USRE28290E (en) 1974-12-31
DE1449692A1 (de) 1969-12-18
CH433796A (de) 1967-04-15
US3364496A (en) 1968-01-16

Similar Documents

Publication Publication Date Title
DE1449692B2 (de) Magnetisches aufzeichnungsverfahren
DE864926C (de) Verfahren und Vorrichtung zum Kopieren von Magnetogrammen
DE2451796C2 (de) Magnetischer Aufzeichnungsträger
DE1907236B2 (de) Verfahren zur Herstellung von magne tisierbaren, nadelförmigen, mit Kobaltoxid modifizierten Fe tief 2 O tief 3 Teil chen fur die Herstellung von Magnetogramm tragern
DE2130921B2 (de) Verfahren zur Herstellung von Pulver aus Eisen und/oder Kobalt und/oder
DE3525383A1 (de) Verfahren und vorrichtung zum entmagnetisieren magnetischer aufzeichnungsmedien
DE2161083A1 (de) Verfahren und vorrichtung zur herstellung bandfoermiger magnetogrammtraeger
DE2344644A1 (de) Verfahren zur herstellung von magnetischen aufzeichnungen, die nicht unbemerkt veraendert werden koennen
DE3622241A1 (de) Magnet-widerstandssensor
DE3219778A1 (de) Magnetisches aufzeichnungsmaterial
DE1955699C3 (de) Magnetaufzeichnungsträger
DE3447688A1 (de) Aufzeichnungsmedium fuer quermagnetisierung
DE2425641C3 (de) Vorrichtung zum Aufzeichnen von Information auf thermomagnetischem Wege
DE2658956A1 (de) Vertikales magnetisches informationsaufzeichnungssystem
DE3618116A1 (de) Magnetisches aufzeichnungsmedium
DE2408358A1 (de) Zweistufige kontaktvervielfaeltigung von magnetischen signalen unter verwendung eines zwischenmediums mit einem metalluntergrund
DE2446879A1 (de) Magnetloeschkopf
DE1473353A1 (de) Magnetographieverfahren
DE1522965C3 (de) Verfahren zur Herstellung von Magnetbändern mit unlöschbar eingeprägter Information
DE2641578C2 (de) Magnetisches Aufzeichnungsmedium einer ersten und einer zweiten Art magnetischer Aufzeichnungsteilchen
DE2261450A1 (de) Loescheinrichtung fuer bewegte magnetische aufzeichnungstraeger
DE1979146U (de) Magnetischer wandlerkopf.
DE2329450A1 (de) Verfahren zur kopierung von magnetsignalen
DE2249751C3 (de) Verfahren zum Kopieren auf ein magnetisierbares Medium aufgebrachter magnetischer Aufzeichnungen
DE2551460A1 (de) Mit photomagnetischem effekt arbeitende magnetische anordnung

Legal Events

Date Code Title Description
BHN Withdrawal