Patent ID: 6426178
Filing Date: 2002-07-30
Classification: G03C

Abstract:
A photographic element for forming neutral images comprising a co-dispersion comprising a cyan dye-forming coupler, magenta dye-forming coupler of formula MAGENTA-2, wherein Ra and Rb independently represents H or a substituent; X is hydrogen or a coupling-off group; Za, Zb, and Zc are independently a substituted methine group, &boxH;Nâ€”, &boxH;Câ€”, or â€”NHâ€”, provided that one of either the Zaâ€”Zb bond or the Zbâ€”Zc bond is a double bond and the other is a single bond, and when the Zbâ€”Zc bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Za, Zb, and Zc represents a methine group connected to the group Rb; and yellow dye-forming coupler of formula YELLOW-II, â€ƒwherein: R5-R10 are substituents, R5 is either an alkoxy group with more than one carbon atom, aryloxy group, anilino group, arylthio group, alkylthio group, or dialkylamino group, R5 groups are linked to the anilide phenyl ring by oxygen, sulfur or nitrogen; R6 is bonded to the -3 through -6 position relative to the anilino nitrogen and is independently selected from a group consisting of hydrogen, halogen, alkoxycarbonyl(â€”CO2R), carbamoyl(â€”CONRRâ€²), carbonamido(â€”NRCORâ€²), sulfonate(â€”OSO2R), sulfamoyl(â€”SO2NRRâ€²), sulfonamido(â€”NRSO2Râ€²), or sulfonyl(â€”SO2R); R and Râ€² may be hydrogen or substituted or unsubstituted alkyl or aryl groups; q is 1 to 4; R7 is either alkyl, cyclic, or multicyclic alkyl, aryl, heterocyclic, heteroaromatic, and amine groups; and R8, R9 and R10 are each independently selected from the group hydrogen, alkyl, aryl, or alkoxy groups.