GB349757A - Improved manufacture of sound films - Google Patents

Improved manufacture of sound films

Info

Publication number
GB349757A
GB349757A GB14229/30A GB1422930A GB349757A GB 349757 A GB349757 A GB 349757A GB 14229/30 A GB14229/30 A GB 14229/30A GB 1422930 A GB1422930 A GB 1422930A GB 349757 A GB349757 A GB 349757A
Authority
GB
United Kingdom
Prior art keywords
sound
trace
film
stylus
scraper
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
GB14229/30A
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.)
FR CINECHROMATIQUE PROCEDES R
Original Assignee
FR CINECHROMATIQUE PROCEDES R
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 FR CINECHROMATIQUE PROCEDES R filed Critical FR CINECHROMATIQUE PROCEDES R
Publication of GB349757A publication Critical patent/GB349757A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor

Landscapes

  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

349,757. Recording sound. SOC. FRANCAISE CINECHROMATIQUE(PROCEDES R. BERTHON), 24, Rue de la Pepiniere, Paris. May 8, 1930, No. 14229. Convention date, May 10, 1929. [Class 40 (ii).] Sound is recorded on a travelling transparent support coated with an opaque plastic material by a stylus or scraper of definite width which is vibrated transversely to the movement of the support by a diaphragm influenced by the sounds or electro - magnetically by sound currents. A photographic print is then made from the record on to a separate carrier or on to a carrier receiving black and white or coloured pictures, and the sound is reproduced photo-electrically by known means. The Figure shows a film A of celluloid, viscose, &c., coated with an opaque layer of a substance of wax consistency or of lampblack which is removed by a stylus or scraper B vibrated by a sound-influenced diaphragm C to form a wavy trace on the travelling film. This trace is used as a negative, and a positive is produced therefrom by masking the edge of the trace and copying photographically by contact printing or projection on to another film which may carry pictures or may be traversed in synchronism with a picture film during reproduction by photoelectric means.
GB14229/30A 1929-05-10 1930-05-08 Improved manufacture of sound films Expired GB349757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR349757X 1929-05-10

Publications (1)

Publication Number Publication Date
GB349757A true GB349757A (en) 1931-06-04

Family

ID=8892778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14229/30A Expired GB349757A (en) 1929-05-10 1930-05-08 Improved manufacture of sound films

Country Status (1)

Country Link
GB (1) GB349757A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741332C (en) * 1931-09-30 1943-11-10 Philips Miller N V Device for cutting out an optically reproduced vibration recording from a carrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741332C (en) * 1931-09-30 1943-11-10 Philips Miller N V Device for cutting out an optically reproduced vibration recording from a carrier

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