Process for the production of silver halide emulsions

US5604087A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Otto Lapp · Leverkusen, DE
• Lothar Endres · Bensberg, DE
• Klaus Wagner · Bensberg, DE

Key dates

• Filing date: Nov 21, 1995
• Grant date: Feb 18, 1997
• Expiry date: Nov 21, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2001/03558
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A silver halide having at least two halides of differing atomic numbers may successfully be produced with a more uniform halide distribution within certain zones or throughout the entire volume of the individual grain and from grain to grain, if a portion or the entire quantity of the halide of the higher atomic number is dissolved in an aqueous silver salt solution and the resulting solution is introduced at any stage into the emulsion preparation process.