Photographic processing methods using compositions containing stain reducing agent
US6153364A · kind A · utility
8Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/815
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Specific aromatic compounds having an extended planar .pi. system are useful as spectral sensitizing dye stain reducing agents in photographic processing compositions and methods for providing color or black-and-white images in various photographic silver halide materials. These compounds are devoid of diaminostilbene fragments or fused triazole nuclei. They are particularly useful in fixing and bleaching compositions in the processing of color photographic silver halide materials, but can be used in various other processing compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.