Color photographic silver halide material

US6171776A · kind A · utility

Assignee

• Agfa NV · BE

Inventors

• Cuong Ly · Cologne, DE
• Michael Missfeldt · Leichlingen, DE
• Heinz-Horst Teitscheid · Neunburg vorm Wald, DE
• Edgar Draber · Odenthal, DE

Key dates

• Filing date: Dec 10, 1998
• Grant date: Jan 9, 2001
• Expiry date: Dec 10, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/367
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A colour photographic silver halide material in which at least one of the blue-sensitive silver halide emulsions is spectrally sensitised with a mixture of at least one seansitising dye of the formula (I) and at least one sensitising dye of the formula (II): ##STR1## in which PA1 R.sub.1 means an optionally substituted thienyl, pyrroly, indolyl, furamyl or phenyl, ##STR2## in which PA1 R.sub.5, R.sub.6, R.sub.7, mean H or R.sub.5 and R.sub.6 together or R.sub.6 and R.sub.7 together mean the remaining members of a fused benzo ring and the residual substituent means H and PA1 R.sub.2, R.sub.3, R.sub.4, R.sub.8, R.sub.9, R.sub.10 and M have the meaning stated in the description, is distinguished by elevated sensitivity and improved latent image stabilitity.