Infrared couplers for incorporating and recovering metadata
US6518000B1 · kind B1 · utility
1Cited by
5References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2002 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jan 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler that forms a dye for which the &lgr;max using spin-coating is shifted towards the infrared region of the spectrum by at least 30 nm, when compared to the &lgr;max of the same dye in solution form, to a value of at least 700 nm. Such an element is useful for recording metadata with an image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.