DE510276C - Apparatus for the production of audio-visual films - Google Patents

Description

Device for the production of sound-image films There are already devices known for the production of picture films containing both pictures and sounds, however, for the recording of images and sounds on separate recording media he follows. These devices consist of separate devices for film transport and for the transport of the clay film, and the two films must also be transported in a third Facility to be combined in the copier.

Furthermore, methods are known in which already during the projection existing image recordings corresponding to the resulting projection images Sound processes generated synchronously and on one and the same light-sensitive film the image recordings are copied and the sounds are recorded side by side.

The subject of the invention is the association of the implementation these procedures previously required separate facilities to form a single unit Device with a common drive.

The .invention device consists of a known per se, Constantly moving, e.g. rotating part provided with a synchronization controller, a roll or the like for sound recording, one required for image projection known mechanism with intermittent movement or .with optical image compensation and a known device for copying the image recordings, which according to the invention the essential parts of the drive mechanism are common.

The device is explained in more detail using an exemplary embodiment.

The film supply roll i and the film take-up roll 2 are located in a housing a. The film b, which contains the finished image recordings, passes from the roll i through the image window c, while at the same time it is made visible by the light source e by projection, via the Maltese cross roll d in the take-up roll 2. The light source e reaches a second image window f at the same time, in which the copying process takes place. For this purpose, the photosensitive film la is fed from the supply roll 3 over the movement roll g through the image window f after the take-up roll ¢ over a roll j, on which the sound recording takes place during the passage. From a microphone k, the sound vibrations arrive in a manner known per se to act on a light source or a light relay and are brought into effect by the optical device m on the film which runs over the roll j, while by means of also known synchronization devices, for example a Inertia mass n, which ensures a constant run at this point. The rollers d, j and g are expediently rigidly connected by a main drive wheel o, so that the synchronism between picture and sound is absolutely guaranteed. The entire device will advantageously be accommodated in a common housing in order to obtain a single movable instrument for the aforementioned type of production of picture sound films.

The advantages of the mechanism according to the invention are the simple, Clear construction and the associated operational safety as well as mobility the facility, which is very important for special purposes.

Claims (3)

PATENT CLAIMS: i. Apparatus for producing sound image films which contain image and sound on a common carrier, characterized by the combination of an image film projection device (i, c, d, 2), a sound film recording device (j, n, m) and an image film copying device with one common to the three devices Drive (o) to a device. 2. Apparatus according to claim i, characterized characterized in that the three facilities, which at the same time at three different Place the films work in a common, expediently transportable housing are housed. 3. Apparatus according to claim i and 2, characterized .gekiert, that the light source required for projection acts as a copy light source at the same time and optionally when using a light relay as the sound recording light source Is used.