Method of suppressing fog in silver halide emulsions
US6214529A · kind A · utility
2Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Oct 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a method of reducing fog in a silver halide emulsion comprising taking a high fogging emulsion which has been chemically sensitized and cooled, holding the high fogging emulsion in the form of a melt in preparation for coating on a support, and prior to or during said holding, contacting the emulsion with an isothiazolin-one compound represented by the following formula ##STR1## wherein R.sup.1 is a substituent; and Z contains the carbon atoms necessary to form a substituted or unsubstituted non-aromatic ring. It also relates to silver halide photographic elements containing such emulsions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.