GB516279A - Improvements in or relating to films for use in sound recording - Google Patents
Improvements in or relating to films for use in sound recordingInfo
- Publication number
- GB516279A GB516279A GB866238A GB866238A GB516279A GB 516279 A GB516279 A GB 516279A GB 866238 A GB866238 A GB 866238A GB 866238 A GB866238 A GB 866238A GB 516279 A GB516279 A GB 516279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- coloured
- film
- sound
- underlayers
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/12—Cinematrographic processes of taking pictures or printing
- G03C5/14—Cinematrographic processes of taking pictures or printing combined with sound-recording
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Color Printing (AREA)
Abstract
516,279. Photographic films for sound recording. DANIEL, K. March 21, 1938, No. 8662. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 21, 1938.] Drawings to Specification. [Class 98 (ii)] A film for'recording sound to be reproduced episcopically comprises an opaque support and on each side thereof an emulsion layer coated over a layer of light-reflecting material which is coloured so as' to absorb light to which the emulsion has maximum light-sensitivity and to reflect light of another colour. The film may be endless with a twist in it. In reproducing sound from records made on such a film, a photoelectric cell is used which responds to the light reflected by the coloured underlayers. The material of the underlayers may be gelatin coloured, e.g., with Filter Yellow or Tartrazin if the emulsions have ordinary blue sensitivity, or with a red dyestuff if the emulsions are orthochromatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB866238A GB516279A (en) | 1938-03-21 | 1938-03-21 | Improvements in or relating to films for use in sound recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB866238A GB516279A (en) | 1938-03-21 | 1938-03-21 | Improvements in or relating to films for use in sound recording |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516279A true GB516279A (en) | 1939-12-29 |
Family
ID=9856801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB866238A Expired GB516279A (en) | 1938-03-21 | 1938-03-21 | Improvements in or relating to films for use in sound recording |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB516279A (en) |
-
1938
- 1938-03-21 GB GB866238A patent/GB516279A/en not_active Expired
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