Process of producing color negative image at shortened development times
US5935767A · kind A · utility
0Cited by
6References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 29, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Jan 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Increased speed of the red record is realized when a color negative film is developed in 2 minutes or less and contains a fast and slow pair of red recording emulsion layers, the fast layer containing at a concentration of at least 0.1 mole per silver mole a colorless cyan dye-forming 2-(alkoxyarylcarbamoyl)-1-naphthol coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.