Color photographic silver halide duplicating element and process
US5399468A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Aug 17, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3335
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color photographic silver halide negative working duplicating element and process comprising (A) a magenta colored masking coupler in at least one blue-sensitive photographic silver halide emulsion layer; and (B) a combination of (i) masking couplers and (ii) color contamination of at least one photographic silver halide emulsion layer enables upon exposure and processing of the element formation of a duplicate image that enables formation of a print image that is visually indistinguishable from the original image. The color photographic silver halide duplicating element is useful in forming duplicate images, especially for color motion picture films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.