EP 0405938 A2 19910102 - High-speed silver halide phototographic light-sensitive material.
Title (en)
High-speed silver halide phototographic light-sensitive material.
Title (de)
Hochempfindliches photographisches Silberhalogenidmaterial.
Title (fr)
Matériau photographique à halogénure d'argent de haute sensibilité.
Publication
Application
Priority
JP 16508089 A 19890627
Abstract (en)
A method for preparing a silver halide photographic emulsion containing silver halide grains, each of which has two or more phases different in the silver halide composition, comprising a step of growing silver halide grains, in which said silver halide grains are grown by supplying a solution of water-soluble silver salt and a solution of water-soluble halide, wherein fine grains of silver halide having a solubility product smaller than that of silver halide grains present in the course of growing silver halide grains are made present in the silver halide emulsion at a time during the grain-growth, iridium ions being individually added at a time when or after starting the grain-growth.
IPC 1-7
IPC 8 full level
G03C 1/015 (2006.01); G03C 1/035 (2006.01); G03C 1/09 (2006.01)
CPC (source: EP)
G03C 1/035 (2013.01); G03C 1/09 (2013.01)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0405938 A2 19910102; EP 0405938 A3 19920520; JP 2719540 B2 19980225; JP H0329938 A 19910207
DOCDB simple family (application)
EP 90307019 A 19900627; JP 16508089 A 19890627