Infrared-sensitive photographic element containing at least two photosensitive layers
US5108882A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic element is described comprising a support having thereon (a) a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus, PA1 R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl, and PA1 R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, PA1 X represents a counterion, and (b) at least one other red- or infrared-sensitive silver halide emulsion layer having a maximum sensitivity at a wavelength different from that of the (a) layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.