Color photographic silver halide material

US6689552B2 · kind B2 · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Cuong Ly · Cologne, DE
• Edgar Draber · Odenthal, DE
• Matthias Feigl · Leverkusen, DE
• Gunter Helling · Siegburg, DE
• Thomas Kaluschke · Leichlingen, DE
• Michael Missfeldt · Leichlingen, DE
• Maria Nietgen · Leverkusen, DE
• Heinz-Horst Teitscheid · Neunburg vorm Wald, DE
• Ralf Weimann · Leverkusen, DE
• Heinz Wiesen · Euskirchen, DE

Key dates

• Filing date: Nov 5, 2001
• Grant date: Feb 10, 2004
• Expiry date: Jan 31, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2001/03517
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A color photographic silver halide material which can be developed to form a negative, at least 95 mol % of the silver halides of which consist of AgCl, and which contains at least one light-sensitive silver halide emulsion layer, the silver halide of which contains at least one compound of formulae (I), (II) and (III):[IrClnF6-n]2−M2+  (I) wherein n denotes 0 or an integer from 1 to 6 and M2+ denotes 1 or 2 cations with a total number of 2 positive charges,[Fe(CN)6]m−Mm+  (II) wherein m denotes 2 or 3 and Mm+ denotes 1 to 3 cations with a total number of m positive charges, wherein o denotes 0, 1 or 2 and R denotes an alkyl, aryl or aralkyl, is distinguished under scanning exposure and on analogue exposure by sharp contrast which is independent of exposure time and by a stable latent image.