High chloride 100 tabular grain emulsions containing a high iodide internal expitaxial phase
US5695922A · kind A · utility
1Cited by
17References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic emulsion comprised of high chloride radiation-sensitive tabular grains comprised of a tabular host portion containing greater than 50 mole percent chloride, based on silver, and having spaced parallel {100} major faces, a high chloride shell accounting for at least 4 percent of total silver surrounding the host portion and, interposed between the shell and the host portion an internal epitaxial phase containing greater than 90 mole percent iodide, based on silver, overlying from 15 to 90 percent of the major faces of the host portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.