EP 0735416 A1 19961002 - Photographic elements with particular sensitized silver halide emulsions
Title (en)
Photographic elements with particular sensitized silver halide emulsions
Title (de)
Photographische Elemente mit speziellen sensibilisierten Silberhalogenid-Emulsionen
Title (fr)
Eléments photographiques contenant des émulsions particulières à l'halogénure d'argent
Publication
Application
Priority
- US 41468395 A 19950331
- US 48437195 A 19950607
Abstract (en)
A photographic element (which is preferably a Graphic Arts element) a light sensitive silver halide emulsion sensitized with a dye of formula (I): <CHEM> wherein: R3 is an alkyl group, alkenyl group, or aryl group R4 and R5 are each hydrogen, an alkyl group, alkenyl or aryl group; R6, R7 and R8 are, independently, an alkyl group, alkenyl group, aryl group, or H; the dye has at least three acid or acid salt substituents; and each L independently represents a methine group; p is 0 or 1; Z1 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring group; (X)n represents counterions as needed to balance the charge on the molecule. Dyes of formula (I) produce low stain in photographic elements of the present invention, while still providing the silver halide with good light sensitivity.
IPC 1-7
IPC 8 full level
C09B 23/00 (2006.01); G03C 1/22 (2006.01); G03C 1/26 (2006.01); G03C 7/00 (2006.01)
CPC (source: EP)
G03C 1/26 (2013.01)
Citation (search report)
- [YD] GB 489335 A 19380722 - DOUGLAS JAMES FRY, et al
- [YD] EP 0540295 A1 19930505 - KONISHIROKU PHOTO IND [JP]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 96200487 A 19960226; JP 4136696 A 19960228