DE29602923U1 - 24 mm film for motion picture - Google Patents

Description

Roger Field

24 mm film for motion pictures

The invention relates to the application of a film of a certain width, 24 mm, which is used for still image purposes for APS (Advanced Processing System), for motion picture purposes, for camera recording or projection or both.

Common film formats in use worldwide are 16 mm, 35 mm and 65 mm (70 mm for cinema projection).

16mm film is used almost exclusively for television purposes in England and Europe.

35 mm film is used almost exclusively for cinema and television purposes in the USA. The 16 mm format is currently considered sufficient for television purposes in Europe and attempts are being made to get everything possible out of the format, such as Super 16 mm. Super 16 corresponds roughly to the 16:9 format of the new generation of television. Super 16 has the disadvantage that there is no room on the film for a soundtrack so that no Super 16 copy with sound can be projected. Super 16 is usually copied to 35 mm film for cinema screenings, where of course there is room for a soundtrack.

However, this process is so expensive that the advantage of Super 16 film is significantly reduced. Television screens are getting bigger and bigger over time and the competitiveness of Super 16 film against digital video is becoming increasingly less. 35 mm film is very expensive and too wide for television purposes.

Very few productions that were filmed for television are used for cinema purposes.

It is the object of the invention to create an ideal film format for motion picture purposes, in particular for a worldwide film standard for television purposes.

The 24 mm film, which is produced by Kodak and Fuji for the APS still image system, for example, is ideal for the aforementioned purpose.

The film can possibly be magnetically coated on the back, on the non-emulsion side, as is common today with APS. This magnetic layer can be used for certain purposes, e.g. digital sound, etc.

The film can be produced with or without perforation. It is possible to create sufficient space for a conventional sound track on this film. An aspect ratio of, for example, 18 x 10 mm, which corresponds approximately to 16:9, can be used.

An example of the invention is explained in more detail in the drawing and in the description.

Fig. 1 shows the width of the film in relation to 16 and 35 mm film. Fig. 2 shows the film in a side view in a step-like film drive.

Fig. 1 shows the 24 mm film 2 between 16 mm film 1 and 35 mm film 3. It is clear that the 24 mm film 2 is an ideal compromise between the 16 mm film 1, which is used in Europe and England for motion picture and television purposes, and the 35 mm film 3, which is used almost exclusively for television purposes in the USA.

Fig. 2 shows the 24 mm film 2 in a side view in a drive 9, which consists of a motor 5 which runs step by step and with a capstan 4 fastened to the axis 10 of the motor 5.

The film 2 has a magnetic layer on the back, which is coded to indicate where the film 2 should find its final position. The code is read by the pressure plate 8 provided for this purpose, and the information is sent to the motor 5. This reading occurs in the area of the image window 7 behind the lens 6.

Claims (5)

-A-Protection claims 1. Photographic film for motion picture purposes which can be used primarily for television purposes, e.g. as an optimal universal film format, the width of the film (2) being 24 mm or substantially 24 mm. 2. Photographic film according to claim 1, wherein the film has perforations on one or both sides evenly positioned relative to one another over the length of the film (2) or substantially over the length of the film (2). 3. Photographic film according to claim 1-2, wherein the image format is substantially 18 x 10 mm. 4. Photographic film according to claims 1-3, wherein the non-emulsion side of the film (2) has a magnetic layer (11) and is used for recording information. 5. Photographic film according to claims 1-4, wherein the film (2) can be used for film drives (9), for cameras and projectors, which have at least one motor (5), e.g. with a capstan (4) which is attached to the axis (10), and the position of the film (2) is read in relation to the image window (7).