EP 0689091 A1 19951227 - Process for preparing a silver halide photographic emulsion sensitised in the presence of hydroquinone derivatives
Title (en)
Process for preparing a silver halide photographic emulsion sensitised in the presence of hydroquinone derivatives
Title (de)
Verfahren zur Herstellung einer photographischen Silberhalogenidemulsion, die in Gegenwart von Hydrochinonverbindungen sensibilisiert ist
Title (fr)
Procédé de préparation d'une émulsion photographique à l'halogénure d'argent sensibilisée en présence de dérivés d'hydroguinone
Publication
Application
Priority
FR 9407275 A 19940609
Abstract (en)
The present invention concerns a silver halide photographic emulsion, particularly a silver halide emulsion sensitised by means of a novel combination of sensitising compounds, and the process which enables such an emulsion to be obtained. According to the invention, the emulsion is chemically sensitised by means of a compound of sulphur and/or gold and/or selenium and at least one reducing compound under particular conditions of pH. This emulsion enables the sensitivity of a silver halide emulsion to be increased without changing the fogging level.
IPC 1-7
IPC 8 full level
G03C 1/015 (2006.01); G03C 1/06 (2006.01); G03C 1/09 (2006.01); G03C 1/10 (2006.01); G03C 1/34 (2006.01)
CPC (source: EP)
G03C 1/015 (2013.01); G03C 1/10 (2013.01); G03C 1/34 (2013.01); G03C 2001/091 (2013.01); G03C 2001/097 (2013.01); G03C 2200/44 (2013.01)
C-Set (source: EP)
Citation (applicant)
- US 4377634 A 19830322 - MIFUNE HIROYUKI [JP], et al
- US 4614707 A 19860930 - FUJITA MUNEHISA [JP], et al
- EP 0209010 A2 19870121 - EASTMAN KODAK CO [US]
- US 3192146 A 19650629 - JUSTIN VELLAS JEAN LEON, et al
- RESEARCH DISCLOSURE, vol. 308, no. 119, December 1989 (1989-12-01)
- RESEARCH DISCLOSURE, vol. 308, no. 119, December 1989 (1989-12-01)
Citation (search report)
- [Y] GB 2055221 A 19810225 - DU PONT
- [Y] DE 1207792 B 19651223 - AGFA AG
- [Y] DE 2632202 A1 19770203 - FUJI PHOTO FILM CO LTD
- [Y] FR 2414743 A1 19790810 - KODAK PATHE [FR]
- [Y] FR 2538135 A1 19840622 - WOLFEN FILMFAB VEB [DD]
- [Y] DE 2034064 A1 19710513
- [A] FR 2208133 A1 19740621 - ILFORD LTD [GB]
- [Y] GUNTHER FISCHER: "STABILISATOREN UND ANTISCHLEIERMITTEL FÜR PHOTOGRAPHISCHE SILBERHALOGENIDMATERIALIEN TEIL II: AROMATISCHE, ALIPHATISHE UND ANORGANISHE VERBINDUNGEN", JOURNAL OF INFORMATION RECORDING MATERIALS, vol. 20, no. 3, YVERDON CH, pages 197 - 239
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0689091 A1 19951227; FR 2721117 A1 19951215; FR 2721117 B1 19980710; JP H086195 A 19960112
DOCDB simple family (application)
EP 95420137 A 19950526; FR 9407275 A 19940609; JP 14222195 A 19950608