Process for making high chloride tabular grain emulsion using multiple stream addition of iodide
US5709989A · kind A · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Aug 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention generally relates to a process for forming tabular silver chloride grains comprising nucleating silver chloride particles, introducing alkali iodide solution into the dispersing medium containing the nucleated silver chloride particles, and introducing silver ion and chloride ion solutions into said dispersing medium, with the proviso that introduction of the alkali iodide is by multiple streams of said alkali iodide at a momentum range of up to 1.times.10.sup.+9 g cm/s.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.