Silver halide imaging element containing intercalated photographically useful compounds
US6974663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Dec 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein a photographically useful compound is incorporated into at least one hydrophilic colloid layer in the form of an intercalation composition comprising a layered host material having molecules of the photographically useful compound inserted as guest molecules between the layers of the host material. The invention provide novels materials and a method of incorporating active chemistry compounds such as developers or development inhibitors directly into a photographic imaging element with improved stability and keeping response versus known methods for incorporating active chemistry compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.