EP 0903621 A1 19990324 - Process for the preparation of silver halide photographic element
Title (en)
Process for the preparation of silver halide photographic element
Title (de)
Verfahren zur Herstellung eines photographischen Silberhalogenidelements
Title (fr)
Procédé pour la préparation d'un élément photographique à l'halogénure d'argent
Publication
Application
Priority
EP 97116342 A 19970919
Abstract (en)
The present invention relates to a process for the manufacturing of a silver halide element comprising a silver halide emulsion-making step, a chemical and optical sensitization step, and a silver halide emulsion coating step, characterized in that said process comprises the step of adding to said silver halide emulsion, before the coating step, an aryl compound having at least two hydroxyl groups and at least one additional substituent represented by a sulfonic group, an hydroxyl group, a carboxy group or an hydroxymethyl group in an amount of less than 0.03 moles per mole of silver. The use of such an aryl compound agent to prevent metal contamination of a silver halide photographic emulsion and a silver halide emulsion and element comprising such an aryl compound is also claimed.
IPC 1-7
IPC 8 full level
G03C 1/33 (2006.01); G03C 1/34 (2006.01); G03C 1/005 (2006.01); G03C 5/17 (2006.01)
CPC (source: EP)
G03C 1/33 (2013.01); G03C 1/34 (2013.01); G03C 1/0051 (2013.01); G03C 5/17 (2013.01)
Citation (search report)
- [XY] US 3236652 A 19660222 - KENNARD KENNETH C, et al
- [XY] US 5631126 A 19970520 - DAUBENDIEK RICHARD L [US], et al
- [DXY] EP 0339870 A1 19891102 - MINNESOTA MINING & MFG [US]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97116342 A 19970919; JP 25995098 A 19980914