FR679198A - Improvements to sound recording processes - Google Patents

Improvements to sound recording processes

Info

Publication number
FR679198A
FR679198A FR679198DA FR679198A FR 679198 A FR679198 A FR 679198A FR 679198D A FR679198D A FR 679198DA FR 679198 A FR679198 A FR 679198A
Authority
FR
France
Prior art keywords
sound recording
recording processes
processes
sound
recording
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
French (fr)
Inventor
Jacques-Emile-Jules Languepin
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 filed Critical
Application granted granted Critical
Publication of FR679198A publication Critical patent/FR679198A/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field
FR679198D 1929-07-24 1929-07-24 Improvements to sound recording processes Expired FR679198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR679198T 1929-07-24

Publications (1)

Publication Number Publication Date
FR679198A true FR679198A (en) 1930-04-09

Family

ID=9021533

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679198D Expired FR679198A (en) 1929-07-24 1929-07-24 Improvements to sound recording processes

Country Status (1)

Country Link
FR (1) FR679198A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973911C (en) * 1952-11-23 1960-07-14 Telefunken Gmbh Method for applying an insulating cover with finely distributed ferromagnetic particles to an electrical conductor wire, in particular for telecommunication cables
DE1092223B (en) * 1958-10-10 1960-11-03 Adox Fotowerke Dr C Schleussne Process for the production of tape-shaped recording media for magnetic sound recording
DE1103609B (en) * 1954-01-18 1961-03-30 Standard App Fabrik G M B H Endless tape-shaped magnetogram carrier wound into a roll and device for its production
DE1153070B (en) * 1958-12-08 1963-08-22 Internat Business Maschines Co Rod magnetic head with separate pole piece for recording signals of small surface area and process for producing the layer of the pole piece

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973911C (en) * 1952-11-23 1960-07-14 Telefunken Gmbh Method for applying an insulating cover with finely distributed ferromagnetic particles to an electrical conductor wire, in particular for telecommunication cables
DE1103609B (en) * 1954-01-18 1961-03-30 Standard App Fabrik G M B H Endless tape-shaped magnetogram carrier wound into a roll and device for its production
DE1092223B (en) * 1958-10-10 1960-11-03 Adox Fotowerke Dr C Schleussne Process for the production of tape-shaped recording media for magnetic sound recording
DE1153070B (en) * 1958-12-08 1963-08-22 Internat Business Maschines Co Rod magnetic head with separate pole piece for recording signals of small surface area and process for producing the layer of the pole piece

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