EP 0650086 A2 19950426 - Photographic silver halide materials.
Title (en)
Photographic silver halide materials.
Title (de)
Photographische Silberhalogenidmaterialien.
Title (fr)
Matériaux photographiques à l'halogénure d'argent.
Publication
Application
Priority
GB 9319792 A 19930924
Abstract (en)
A method of improving abrasion resistance and sensitivity to variations in development time of a photographic material comprising a support bearing a silver halide emulsion layer comprising at least 50% silver chloride which contains in or adjacent the emulsion layer a hydrazide nucleating agent and an amine booster, the combination of which is capable of providing high contrast images, sensitised to radiation having a wavelength from 600 to 700 nm characterised by sensitising the emulsion wih a tricyclic merocyanine dye of the general formula: <CHEM> wherein R<1>, and R<2> are each hydrogen or a substituted or unsubstituted alkyl group of 1-5 carbon atoms, and R<3>, R<4> and R<5> are each a substituted or unsubstituted alkyl group of 1-5 carbon atoms, and wherein at least one of R<3>, R<4> and R<5> contain a water-solubilising group, X is a counter-ion, and n is 0-3., an
IPC 1-7
IPC 8 full level
G03C 1/00 (2006.01); G03C 1/035 (2006.01); G03C 1/06 (2006.01); G03C 1/09 (2006.01); G03C 1/22 (2006.01); G03C 1/26 (2006.01); G03C 1/295 (2006.01)
CPC (source: EP)
G03C 1/061 (2013.01); G03C 1/09 (2013.01); G03C 1/26 (2013.01)
Designated contracting state (EPC)
BE DE GB
DOCDB simple family (publication)
EP 0650086 A2 19950426; EP 0650086 A3 19950927; EP 0650086 B1 19991208; DE 69421996 D1 20000113; DE 69421996 T2 20000629; GB 9319792 D0 19931110; JP H07159918 A 19950623
DOCDB simple family (application)
EP 94202729 A 19940922; DE 69421996 T 19940922; GB 9319792 A 19930924; JP 22496894 A 19940920