EP 0097720 B1 19861126 - PROCESS FOR PREPARING SILVER HALIDE EMULSION
Title (en)
PROCESS FOR PREPARING SILVER HALIDE EMULSION
Publication
Application
Priority
JP 20552481 A 19811219
Abstract (en)
[origin: EP0097720A1] A process for preparing a silver halide emulsion containing core shell type silver halide grains, which comprises using silver halide grains of octahedral or tetradecahedral crystals having a (1 1 1) face substantially comprising silver bromoiodide and having a variation coefficient of particle size distribution of 0.18 or less, and subjecting them to gold-sulfur sensitization or gold-selenium sensitization in the presence of a nitrogen-containing heterocyclic compound capable of forming a complex with silver or its ion. This emulsion shows a remarkably high photographic sensitivity and less reciprocity law failure in high illuminance region, and undergoes less fogging, thus being suitable as a silver halide photographic light-sensitive material.
IPC 1-7
IPC 8 full level
G03C 1/005 (2006.01); G03C 1/015 (2006.01); G03C 1/035 (2006.01); G03C 1/08 (2006.01); G03C 1/09 (2006.01)
CPC (source: EP)
G03C 1/015 (2013.01); G03C 1/035 (2013.01); G03C 2001/03529 (2013.01); G03C 2001/03535 (2013.01); G03C 2001/03564 (2013.01); G03C 2200/06 (2013.01)
Citation (examination)
- JP S5063914 A 19750530
- JP S5177223 A 19760705 - FUJI PHOTO FILM CO LTD
- PHOTOGRAPHIC SCIENCE & ENGINEERING, vol. 24, no. 1, January/February 1980, WASHINGTON (US), D. CORBIN et al.: "Effects of stabilizers on chemical sensitization of silver halide emulsions", pages 45-49
Designated contracting state (EPC)
BE DE FR NL
DOCDB simple family (publication)
EP 0097720 A1 19840111; EP 0097720 A4 19840810; EP 0097720 B1 19861126; DE 3274500 D1 19870115; GB 2125981 A 19840314; GB 2125981 B 19860212; GB 8322389 D0 19830921; JP H0353619 B2 19910815; JP S58126526 A 19830728; WO 8302174 A1 19830623
DOCDB simple family (application)
EP 83900062 A 19821220; DE 3274500 T 19821220; GB 8322389 A 19821220; JP 20552481 A 19811219; JP 8200471 W 19821220