EP 0650086 B1 19991208 - Method of improving abrasion resistance of photographic silver halide materials
Title (en)
Method of improving abrasion resistance of photographic silver halide materials
Title (de)
Verfahren zur Verbesserung der Abriebfestigkeit von photographischen Silberhalogenidmaterialien
Title (fr)
Méthode d'améliorer la résistance contre l'abrasion de matériaux photographiques à l'halogénure d'argent
Publication
Application
Priority
GB 9319792 A 19930924
Abstract (en)
[origin: EP0650086A2] 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)
Citation (examination)
EP 0642055 A1 19950308 - KONISHIROKU PHOTO IND [JP]
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