DE699349C - Film for sound recordings - Google Patents
Film for sound recordingsInfo
- Publication number
- DE699349C DE699349C DE1938I0063179 DEI0063179D DE699349C DE 699349 C DE699349 C DE 699349C DE 1938I0063179 DE1938I0063179 DE 1938I0063179 DE I0063179 D DEI0063179 D DE I0063179D DE 699349 C DE699349 C DE 699349C
- Authority
- DE
- Germany
- Prior art keywords
- film
- sound recordings
- sound
- ultraviolet light
- fluorescent
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laminated Bodies (AREA)
Description
Film. für Tonaufzeichnungen Die vorliegende Erfindung betrifft "einen Tonfilm, der insbesondere zur- Aufzeichnung von solchen Tonaufzeichnungen geeignet ist, die mit Hilfe von ultraviolettem Licht hergestellt werden.Movie. for sound recordings The present invention relates to "a Sound film particularly suitable for the recording of such sound recordings made with the help of ultraviolet light.
Es ist bekannt, Tonaufzeichnungen mit Hilfe von ultraviolettem Licht herzustellen. Diese Tonaufzeichnungen zeigen eine bessere Frequenzwiedergabe, besonders in den höheren Tonlagen, als solche, die mit sichtbarem Licht hergestellt sind. Es ist aber bisher bei diesem Verfahren sehr schwierig gewesen, das Bild des Tonspaltes .auf dem Film scharf einzustellen, da das ultraviolette Licht nicht mehr im sichtbaren Bereich liegt. Man hat sich zu diesem Zweck eines Gemisches von sichtbarem Licht und Ultraviolettlicht bedient, jedoch benötigt man dann ein Objektiv, dessen Brennpunkt für die Wellenlänge der zur Aufzeichnung benutzten ultravioletten Strahlung und der zum Einstellen dienenden sichtbaren Strahlung zusammenfallen muß. Diesen Anforderungen genügen nur sehr schwierig herzustellende und dadurch recht kostspielige Linsensysteme.It is known to make sound recordings with the help of ultraviolet light to manufacture. These sound recordings show better frequency reproduction, especially in the higher pitches than those made with visible light. So far it has been very difficult with this method to get the image of the sound gap . Focus on the film, since the ultraviolet light is no longer in the visible Area lies. A mixture of visible light has been used for this purpose and ultraviolet light, but then you need a lens whose focal point for the wavelength of the ultraviolet radiation used for recording and the visible radiation used for setting must coincide. These requirements Only lens systems that are very difficult to manufacture and therefore very expensive are sufficient.
Die vorliegende Erfindung vermeidet diele Nachteile. dadurch, daß der Tonfilm so aus: gebildet ist, daß er einen mit einer fluoreszierenden Schicht versehenen Vorlauf besitzt. Die Einstellung des mit dem ultravioletten Licht erzeugten Tonspaltbildes kann dann in einfacher Weise auf .dem Vorlauf mit Hilfe des FluQreszenzlichtes erfolgen, das durch das ultraviolette Licht hervorgerufen wird. Es ist vorteilhaft, wenn der Vorlauf aus gleichem oder ähnlichem Material wie der Tonfilm -selbst besteht, da alsdann die mechanischen-Eigenschaften des Films und des Vorlaufs gleich oder zumindestens ähnlich sind, was sich insbesondere bezüglich der Festigkeit und der Schrumpfung vorteilhaft auswirkt. Am zweckmäßigsten wird man Film und Vorlauf aus einem Stück herstellen. Die fluoreszierende Schicht kann z. B. durch Bestreichen des Vorlaufs mit einer fluoreszierenden Masse aufgebracht werden. Als fluoreszierende Stoffe kommen u. a. Zinksulfid, Natriumsalizylat oder auch Fluoreszein in Frage. Es ist zweckmäßig, um ein möglichst scharfes Bild zu bekommen, die fluoreszierende Schicht sehr feinkörnig zu wählen. Von diesem Gesichtspunkt aus ist z. B. eine fluoreszierende Lösung, etwa Fluoreszein in Gelatine, die auf einen Film aufgebracht und erstarren gelassen wird, vorteilhaft.The present invention avoids these disadvantages. as a result of that the sound film is so formed that it has a fluorescent layer provided forerun. The setting of the generated with the ultraviolet light Tonspaltbildes can then in a simple manner on .dem Vorlauf with the help of the FluQreszenzlichtes caused by the ultraviolet light. It is beneficial if the lead consists of the same or similar material as the sound film itself, because then the mechanical properties of the film and the leader are the same or are at least similar, especially in terms of strength and Shrinkage has a beneficial effect. The best way to do this is to get film and preroll off one piece. The fluorescent layer can e.g. B. by brushing of the first run can be applied with a fluorescent mass. As fluorescent Fabrics come among others Zinc sulfide, sodium salicylate or fluorescein are possible. It is The fluorescent layer is useful in order to get the sharpest possible image very fine-grained to choose. From this point of view, e.g. B. a fluorescent Solution, such as fluorescein in gelatin, which are applied to a film and solidify is left, advantageous.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1938I0063179 DE699349C (en) | 1938-12-16 | 1938-12-16 | Film for sound recordings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1938I0063179 DE699349C (en) | 1938-12-16 | 1938-12-16 | Film for sound recordings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE699349C true DE699349C (en) | 1940-11-27 |
Family
ID=7195854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1938I0063179 Expired DE699349C (en) | 1938-12-16 | 1938-12-16 | Film for sound recordings |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE699349C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2439598A (en) * | 1944-07-05 | 1948-04-13 | Dinsley Alfred | Luminescent signalling composition |
-
1938
- 1938-12-16 DE DE1938I0063179 patent/DE699349C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2439598A (en) * | 1944-07-05 | 1948-04-13 | Dinsley Alfred | Luminescent signalling composition |
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