Photographic fixing composition containing aminoalkyltriazole and method of rapid photographic processing
US6013424A · kind A · utility
2Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1999 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Feb 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/40
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Color photographic silver halide elements, such as color films, can be rapidly fixed using a fixing composition containing a thiosulfate fixing agent, and certain aminoalkyl- and sulfur-substituted 1,2,4-triazoles. Each of the components is present in specific amounts to effect rapid and efficient desilvering. The composition also includes predominantly ammonium cations (at least 50 mol %). Besides effective and rapid silver removal (less than 60 seconds), the fixing composition also minimizes residual dye stain from sensitizing dye aggregates within the photographic elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.