Motion picture film having digitally coded soundtrack and method for production thereof
OwnerGeorge Bird, Peter A. Custerinventors
Life of this patent
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Abstract
A motion picture film having a plurality of digitally coded soundtracks which are colorless and transparent to visible light and which fluoresce when exposed to ultraviolet light, unexposed film for providing the product, and the method for producing the product and methods for producing the exposed and unexposed films. The soundtrack images which overlie at least a portion of the visible image area of the film are digitally coded on the film using an electrostatic imaging system to imprint a fluorescent toner. The toner may comprise a fluorescent polymer having covalently bonded 3-phenyl-7-(amido or imido)-coumarin or certain substituted stilbenes or N-alkyl-4-aminonaphalimides.
Claims24
A motion picture release print produced by the method.
A method for making a motion picture release print containing a visual or photographic image and a sound image which comprises:
- a. forming the film by coating a flexible transparent base with at least one silver halide-containing photographic image-forming layer and adding to the film layer a conductive underlayer on the side opposite the silver halide and an overlayer of clear dielectric or photoconductive material contacting the underlayer;
- b. exposing the photographic image portion of visible light;
- c. developing the photographic image;
- d. contacting the overlayer of dielectric or photoconductive material with a means for creating or transferring an electrostatic image representing a digitally coded soundtrack onto the overlayer, whereby the image overlies at least a part of the photographic image;
- e. contacting the electrostatic image on the overlayer with toner consisting essentially of a thermoplastic polymer which is colorless and transparent under visible light and capable of flourescing in the visible light spectrum when exposed to ultraviolet light;
- and
- f. affixing the toner to the overlayer.
A method for producing a fluorescent soundtrack on an exposed and developed motion picture film which comprises:
- a. adding to the film a conductive underlayer and an overlayer of clear dielectric or photoconductive material contacting the underlayer;
- b. contacting the overlayer of dielectric or photoconductor material with a means for creating or transferring an electrostatic image containing a digitally coded soundtrack onto the overlayer, whereby the image overlies at least a part of the photographic image;
- c. contacting the electrostatic image on the overlayer with toner consisting essentially of polymer which is colorless and transparent under visible light and capable of fluorescing in the visible light spectrum when exposed to ultraviolet light;
- and
- d. affixing the toner to the overlayer.
Dependencies are inferred from the claim text.