EP 0613042 A2 19940831 - Process for preparation of seed crystal emulsion
Title (en)
Process for preparation of seed crystal emulsion
Title (de)
Verfahren zur Herstellung einer Keimkristallemulsion
Title (fr)
Procédé pour la préparation d'émulsion de cristaux d'ensemencement
Publication
Application
Priority
- JP 5928693 A 19930225
- JP 9165193 A 19930419
Abstract (en)
A silver halide emulsion is described, comprising tabular silver halide grains having an aspect ratio of not less than 3.0 and a grain diameter of not less than 0.8 mu m as calculated in terms of sphere in a proportion of not less than 50% of all silver halide grains as calculated in terms of projected area, prepared by a process which comprises desalting a silver halide emulsion comprising tabular silver halide grains having an aspect ratio of not less than 2.0 in a proportion of not less than 50% of all silver halide grains as calculated in terms of projected area, and then using the emulsion as a seed crystal emulsion. A silver halide photographic material comprising a support having provided thereon at least one layer containing the silver halide emulsion and a process for the preparation of the seed crystal emulsion are also described.
IPC 1-7
IPC 8 full level
G03C 1/005 (2006.01); G03C 1/34 (2006.01); G03C 1/015 (2006.01); G03C 1/047 (2006.01); G03C 1/07 (2006.01); G03C 1/10 (2006.01)
CPC (source: EP)
G03C 1/0051 (2013.01); G03C 1/346 (2013.01); G03C 1/015 (2013.01); G03C 1/047 (2013.01); G03C 1/07 (2013.01); G03C 1/10 (2013.01); G03C 2001/0055 (2013.01); G03C 2001/0152 (2013.01); G03C 2001/03511 (2013.01); G03C 2001/03558 (2013.01); G03C 2001/0473 (2013.01); G03C 2200/43 (2013.01); G03C 2200/59 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0613042 A2 19940831; EP 0613042 A3 19970820; EP 0613042 B1 20050817; DE 69434455 D1 20050922; DE 69434455 T2 20060216
DOCDB simple family (application)
EP 94102737 A 19940223; DE 69434455 T 19940223