Photographic elements comprising 2-phenylcarbamoyl-1-naphthol image-modifying couplers yielding dyes resistant to crystallization and reduction
US5514530A · kind A · utility
1Cited by
12References
19Claims
0Family size
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Inventors
Key dates
| Filing date | Jul 28, 1993 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Jul 28, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Photographic elements comprising certain 2-phenylcarbamoyl-1-naphthol image-modifying couplers exhibit proper hue, a resistance to dye crystallization, and a resistance to leuco cyan dye formation. Such couplers can be utilized for their image-modifying effect and can contribute substantially to the overall dye density of an image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.