Composition for and method of cleaning continuous, nonreplenished film developers and replenished film developers
US5304462A · kind A · utility
0Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jul 20, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/485
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A solution containing a water-soluble stilbene sulfonic acid derivative which is used to solubilize oily dye residues in photodeveloper solutions used to develop direct positive silver halide film without generating foam is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.