EP 0767400 A1 19970409 - Preparation method for (100) tabular silver halide grains rich in chloride in silica sol as binder
Title (en)
Preparation method for (100) tabular silver halide grains rich in chloride in silica sol as binder
Title (de)
Herstellungsverfahren für chloridreiche (100)-Tafelkörner mit Kieselsäuresol als Bindemittel
Title (fr)
Procédé de préparation de grains tabulaires (100) à l'halogénure d'argent riche en chlorure avec sol de silice comme liant
Publication
Application
Priority
EP 95202639 A 19951002
Abstract (en)
A method is disclosed for the preparation of tabular silver halide emulsion grains rich in chloride and showing (100) parallel major and an average aspect ratio of at least 2.0 in silica sol as protective colloid binder. Important parameters are the addition modalities of the silica sol and the ratio of its amount to the amount of a costabilizing onium compound.
IPC 1-7
IPC 8 full level
C01G 5/02 (2006.01); G03C 1/005 (2006.01); G03C 1/015 (2006.01); G03C 1/035 (2006.01); G03C 1/04 (2006.01); G03C 1/07 (2006.01)
CPC (source: EP)
G03C 1/0053 (2013.01); G03C 1/04 (2013.01); G03C 1/015 (2013.01); G03C 2200/01 (2013.01)
Citation (search report)
- [DA] EP 0392092 A1 19901017 - AGFA GEVAERT NV [BE]
- [DA] EP 0653669 A1 19950517 - AGFA GEVAERT NV [BE]
- [ED] EP 0677773 A1 19951018 - AGFA GEVAERT NV [BE]
- [A] DATABASE WPI Week 9520, Derwent World Patents Index; AN 95-149871, XP002004505
- [A] DATABASE WPI Week 9542, Derwent World Patents Index; AN 95-326111, XP002004506
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0767400 A1 19970409; JP 2835714 B2 19981214; JP H09203981 A 19970805
DOCDB simple family (application)
EP 95202639 A 19951002; JP 27541396 A 19960925