Process for the preparation of silver halide emulsions, photographic materials, and a process for the production of photographic images

US4379837A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Otto Lapp · Leverkusen, DE
• Harald von Rintelen · Leverkusen, DE
• Franz Moll · Leverkusen, DE
• Lothar Endres · Bensberg, DE

Key dates

• Filing date: May 20, 1981
• Grant date: Apr 12, 1983
• Expiry date: May 20, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2200/06
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Silver halide emulsions are prepared by precipitating a silver halide emulsion I on a more sparingly soluble silver halide emulsion II in the presence of a silver halide solvent wherein the emulsion I has been prepared in the presence of a compound inhibiting grain growth.