Method of producing positive prints from digital image signal data using a film recorder
US5499044A · kind A · utility
6Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digital image signal data is applied to a film recorder to produce a pseudo-negative using high gamma transparency film as the negative. The image signal data is modified before application to the film recorder to insert signal values, positive for positive transparency film and negative for negative transparency film, such that upon photographic processing of the transparency film, a negative image is produced with a positive orange mask effect. The pseudo-negative is then used to produce multiple positive print images conventional negative-working print paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.