Process for stabilizing photographic elements
US5037725A · kind A · utility
18Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Dec 11, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3046
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for stabilizing the magenta dye image in a photographic color element comprises the step of treating the element after the step of color developing and prior to the step of bleaching or bleach-fixing with an aqueous solution that has a pH in the range of 7 to 10 and contains an effective amount of an alkali metal formaldehyde bisulfite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.