Colour photographic silver halide material

US6783924B2 · kind B2 · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Ralf Weimann · Leverkusen, DE
• Markus Geiger · Langenfeld, DE
• Cuong Ly · Cologne, DE
• Klaus Sinzger · Leverkusen, DE
• Beate Weber · Leichlingen, DE
• Heinz Wiesen · Euskirchen, DE

Key dates

• Filing date: Jul 2, 2003
• Grant date: Aug 31, 2004
• Expiry date: Jul 2, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2200/19
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A color photographic silver halide material comprising a substrate, at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, characterised in that the silver halide crystals of the red-sensitive layer have a chloride content of at least 95 mol %, the cyan coupler corresponding to formula whereinR1 represents a hydrogen atom or an alkyl group,R2 represents an alkyl, aryl or hetaryl groupR3 represents an alkyl or aryl group,R4 represents an alkyl, alkenyl, alkoxy, aryloxy, acyloxy, acylamino, sulphonyloxy, sulphamoylamino, sulphonamido, ureido, hydroxycarbonyl, hydroxycarbonylamino, carbamoyl, alkylthio, arylthio, alkylamino or arylamino group or a hydrogen atom andZ represents a hydrogen atom or a group which may be split off under the conditions of chromogenic development andthe red-sensitive layer contains at least one compound of formula whereinR5 represents H, CH3 or OCH3,R6 represents H, OH, CH3, OCH3, NHCO—R7, COOR7, SO2NH2, NHCONH2 or NHC…