Photographic conditioning solution containing bleach accelerator, formaldehyde precursor and secondary amine and method of use
US5523195A · kind A · utility
15Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1995 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Feb 23, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/421
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A conditioning or bleach accelerating solution can be used to process color photographic films, especially color reversal films, to minimize magenta dye fade while reducing the needed amount of formaldehyde stabilizer. These advantageous effects are achieved by including a secondary amine in the solution along with a formaldehyde precursor and a bleach accelerator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.