Dye-Layered silver halide photographic elements with low dye stain
US6787297B1 · kind B1 · utility
0Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2003 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | May 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/29
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides a silver halide photographic element comprising at least one silver halide emulsion comprising silver halide grains which have associated therewith at least an inner dye layer and an outer dye layer wherein the outer dye layer comprises a dye having at least one substituent that has a positive charge, said photographic element further comprising a cyanine dye of formula (I) or (II) (as described in the specification) that is capable of spectrally sensitizing a silver halide emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.