Photographic element having solid particle dispersion of oxidized developer scavenger
US5460933A · kind A · utility
5Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Feb 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/0854
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Undesirable particle growth of particles comprising a hydrazide oxidized developer in a photographic dispersion can be significantly reduced when the hydrazide scavenger is in the form of a dispersion of crystalline solid particles dispersed in an aqueous medium. The dispersion is prepared by milling crystalline solid particles of the scavenger in an aqueous medium in the presence of a dispersing agent and in the substantial absence of an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.