Printer module for recording a digital soundtrack

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems

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Details

355 31, 355 98, G03B 3102, G03B 2732, G03B 2708

Patent

active

053862562

ABSTRACT:
An add-on module for a contact printer used to manufacture a motion picture. The module enables the printing of a digital optical soundtrack on motion picture film from a sound negative using a standard contact printing process. The module includes spaced apart guide rollers and a main roller. Unexposed film is placed in contact between the main roller and the sound negative. The module further includes a fiber optic light source positioned adjacent to the sound negative for exposing the film and forming the digital soundtrack. The digital soundtrack is formed on a portion of the positive print which includes an area between each of the sprocket holes. In addition, the digital soundtrack extends from each sprocket hole to the edge of the positive print on both sides of the print.

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"Dolby Stereo SR-D"; Dolby Laboratories Inc., San Francisco, Calif., 1991 (no month),

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