Printer module for recording a digital soundtrack
US5386256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Apr 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0032
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.