EP 1361477 B1 20070117 - Process for chemically sensitizing a green-sensitive silver halide photographic emulsion and photographic material containing said emulsion
Title (en)
Process for chemically sensitizing a green-sensitive silver halide photographic emulsion and photographic material containing said emulsion
Title (de)
Verfahren zur chemischen Sensibilisierung einer grün-empfindlichen Silberhalogenidemulsion und photographisches Material beinhaltend eine solche Emulsion
Title (fr)
Procédé de sensibilisation chimique des émulsions photographiques à l'halogénure d'argent sensible à la lumiere verte, et materiau photographique contenant une telle émulsion
Publication
Application
Priority
IT SV20020019 A 20020506
Abstract (en)
[origin: EP1361477A1] The present invention provides a process for chemically sensitizing a silver halide photographic emulsion including the addition to said emulsion, during the chemical sensitization, of a benzo-bis-thiazole quaternary salt represented by the general formula (I): <CHEM> wherein R is an alkyl, an alkenyl or an alkinyl group having from 1 to 5 carbon atoms, A represents the atoms necessary to complete a benzo-bis-thiazole nucleus and X<-> is an anion. <??>Another aspect of the present invention relates to a chemically sensitized green-sensitive silver halide emulsion comprising a benzo-bis-thiazole quaternary salt as above and to a photographic material containing in at least one light-sensitive layer said chemically sensitized green-sensitive silver halide photographic emulsion. <??>The chemically sensitized green-sensitive silver halide emulsion of the present invention has the advantage that it maintains the good sensitometric characteristics even after being maintained for a long coating waiting time.
IPC 8 full level
G03C 1/28 (2006.01); G03C 7/392 (2006.01); G03C 1/09 (2006.01)
CPC (source: EP)
G03C 1/28 (2013.01); G03C 7/39276 (2013.01); G03C 1/09 (2013.01); G03C 2001/096 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1361477 A1 20031112; EP 1361477 B1 20070117; DE 60311178 D1 20070308; IT SV20020019 A1 20031106
DOCDB simple family (application)
EP 03009124 A 20030422; DE 60311178 T 20030422; IT SV20020019 A 20020506