GB670993A - Improvements in or relating to magnetic sound recorders - Google Patents

Improvements in or relating to magnetic sound recorders

Info

Publication number
GB670993A
GB670993A GB14741/49A GB1474149A GB670993A GB 670993 A GB670993 A GB 670993A GB 14741/49 A GB14741/49 A GB 14741/49A GB 1474149 A GB1474149 A GB 1474149A GB 670993 A GB670993 A GB 670993A
Authority
GB
United Kingdom
Prior art keywords
relating
magnetic sound
sound recorders
magnetic
photographic
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
GB14741/49A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Priority to GB14741/49A priority Critical patent/GB670993A/en
Publication of GB670993A publication Critical patent/GB670993A/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

Abstract

670,993. Photographic sound records. FARBENFABRIKEN BAYER. May 17, 1950 [June 1, 1949], No. 14741/49. Class 98 (ii). [Also in Group XXXV] Magnetic and photographic sound records may be combined on the same support by applying a magnetic layer less than 2 microns thick, say 0.3-1 micron, by evaporation in a high vacuum or by cathodic sputtering to one side of a film prior to or after application of the photographic emulsion.
GB14741/49A 1949-06-01 1949-06-01 Improvements in or relating to magnetic sound recorders Expired GB670993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14741/49A GB670993A (en) 1949-06-01 1949-06-01 Improvements in or relating to magnetic sound recorders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14741/49A GB670993A (en) 1949-06-01 1949-06-01 Improvements in or relating to magnetic sound recorders

Publications (1)

Publication Number Publication Date
GB670993A true GB670993A (en) 1952-04-30

Family

ID=10046661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14741/49A Expired GB670993A (en) 1949-06-01 1949-06-01 Improvements in or relating to magnetic sound recorders

Country Status (1)

Country Link
GB (1) GB670993A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900282A (en) * 1956-07-20 1959-08-18 Sperry Rand Corp Method of treating magnetic material and resulting articles
US2907680A (en) * 1958-01-23 1959-10-06 Ibm Stress relieved thin magnetic films
US2976174A (en) * 1955-03-22 1961-03-21 Burroughs Corp Oriented magnetic cores
US2999766A (en) * 1957-02-27 1961-09-12 Vickers Electrical Co Ltd Magnetic signal carriers
US3019125A (en) * 1958-11-18 1962-01-30 Ibm Thin magnetic film
US3039891A (en) * 1957-11-14 1962-06-19 Sperry Rand Corp Method of treating ni-fe thin metal film of body of magnetic material by subjecting to heat treatment in a magnetic field oriented transversely to the preferred axis of magnetization
US3065105A (en) * 1958-06-12 1962-11-20 Sperry Rand Corp Process and apparatus for producing magnetic material and resulting article
US3077444A (en) * 1956-06-13 1963-02-12 Siegfried R Hoh Laminated magnetic materials and methods
US3092510A (en) * 1959-03-02 1963-06-04 Sperry Rand Corp Magnetic devices and preparation thereof
US3148079A (en) * 1961-10-12 1964-09-08 Polytechnic Inst Brooklyn Process for producing thin film ferrimagnetic oxides
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
US3161946A (en) * 1964-12-22 permalloy
US6074535A (en) * 1994-09-09 2000-06-13 Fujitsu Limited Magnetoresistive head, method of fabricating the same and magnetic recording apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161946A (en) * 1964-12-22 permalloy
US2976174A (en) * 1955-03-22 1961-03-21 Burroughs Corp Oriented magnetic cores
US3077444A (en) * 1956-06-13 1963-02-12 Siegfried R Hoh Laminated magnetic materials and methods
US2900282A (en) * 1956-07-20 1959-08-18 Sperry Rand Corp Method of treating magnetic material and resulting articles
US2999766A (en) * 1957-02-27 1961-09-12 Vickers Electrical Co Ltd Magnetic signal carriers
US3039891A (en) * 1957-11-14 1962-06-19 Sperry Rand Corp Method of treating ni-fe thin metal film of body of magnetic material by subjecting to heat treatment in a magnetic field oriented transversely to the preferred axis of magnetization
US2907680A (en) * 1958-01-23 1959-10-06 Ibm Stress relieved thin magnetic films
US3065105A (en) * 1958-06-12 1962-11-20 Sperry Rand Corp Process and apparatus for producing magnetic material and resulting article
US3019125A (en) * 1958-11-18 1962-01-30 Ibm Thin magnetic film
US3092510A (en) * 1959-03-02 1963-06-04 Sperry Rand Corp Magnetic devices and preparation thereof
US3150939A (en) * 1961-07-17 1964-09-29 Ibm High density record carrier
US3148079A (en) * 1961-10-12 1964-09-08 Polytechnic Inst Brooklyn Process for producing thin film ferrimagnetic oxides
US6074535A (en) * 1994-09-09 2000-06-13 Fujitsu Limited Magnetoresistive head, method of fabricating the same and magnetic recording apparatus

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