High-contrast photographic element
US4904565A · kind A · utility
16Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high-contrast photographic element is disclosed comprising a support having thereon in order, a layer comprising a filter dye (A), at least one silver halide emulsion layer having a gamma of at least 10, and a layer comprising a filter dye (B), which is the same as or different from dye (A), wherein filter dyes (A) and (B) absorb light in the region of the spectrum to which the silver halide emulsion layer is sensitive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.