Reversal photographic element comprising an imaging layer containing imaging and non-image forming emulsions
US6737229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/38
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reversal photographic element comprising a support and, coated on said support, at least one image recording emulsion layer comprised of: a) a light sensitive silver halide imaging emulsion; and b) a non-image forming silver halide emulsion having an average grain size less than 0.3 &mgr;m and which comprises at least 13 percent of the total silver in the image recording layer, wherein the non-image forming silver halide emulsion comprises at least 1 mole percent iodide, and the iodide mole percentage of the non-image forming silver halide emulsion is equal to or higher than that of the imaging emulsion. The combination of the imaging emulsion and a higher iodide concentration non-imaging emulsion in an imaging layer gives an increase in interlayer interimage effects, increasing the color of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.