EP 0903620 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 97116341 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 substituents each of these represented by an hydroxyl group and/or a sulfonic group in an amount of less than 0.03 moles per mole of silver. The use of such an aryl compound for increasing the speed to Dmin ratio and a silver halide element comprising such an aryl compound is also claimed.
IPC 1-7
IPC 8 full level
G03C 1/035 (2006.01); G03C 1/10 (2006.01); G03C 1/34 (2006.01); G03C 1/005 (2006.01); G03C 5/17 (2006.01)
CPC (source: EP)
G03C 1/10 (2013.01); G03C 1/34 (2013.01); G03C 1/0051 (2013.01); G03C 5/17 (2013.01)
Citation (search report)
- [X] US 5631126 A 19970520 - DAUBENDIEK RICHARD L [US], et al
- [DXY] EP 0339870 A1 19891102 - MINNESOTA MINING & MFG [US]
- [DXY] US 5028520 A 19910702 - ITO TADASHI [JP]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0903620 A1 19990324; EP 0903620 B1 20040602; DE 69729379 D1 20040708; DE 69729379 T2 20050602; JP H11143008 A 19990528
DOCDB simple family (application)
EP 97116341 A 19970919; DE 69729379 T 19970919; JP 25994698 A 19980914