Method for recording and processing motion picture film soundtrack
US5753402A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Jul 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3029
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
By processing color motion picture film to yield a dye-only, "silver-less" soundtrack, an antihalation layer containing silver may be incorporated into the film without interfering with the soundtrack signal in the resulting processed film. The process results in good antihalation protection of the print film during exposure, and a simplified processing procedure which does not require special processing of the exposed soundtrack relative to the image area frames. One embodiment of the invention comprises a method for recording and processing image area frames and an optical soundtrack in a color motion picture film comprising a support bearing blue, green, and red light sensitive silver halide emulsion dye forming layers and an antihalation layer, comprising imagewise exposing said emulsion layers in accordance with desired image area frames, exposing at least one of said emulsion layers in accordance with an analog soundtrack, and processing the exposed film to yield corresponding dye images in the exposed image area frames and analog soundtrack; wherein said antihalation layer comprises a hydrophilic colloid layer containing silver, and wherein said film is processed to yield a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.