Ttype of dye in photographic materials
US5688636A · kind A · utility
1Cited by
0References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | May 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/83
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A new type of yellow dyes with general formula Q--CO--CO--X is disclosed. They can be used in photographic materials as antihalation dyes, acutance dyes or filter dyes. Preferably they are incorporated in UV sensitive contact materials for pre-press applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.