EP 0468389 B1 19961009 - A novel method for the addition of powders to photographic systems
Title (en)
A novel method for the addition of powders to photographic systems
Title (de)
Methode zur Zugabe von Pulvern zu photographischen Systemen
Title (fr)
Méthode pour l'addition de poudres aux systèmes photographiques
Publication
Application
Priority
US 55576090 A 19900723
Abstract (en)
[origin: EP0468389A1] A process for improving the method by which a powder such as a dye is added to a gelatino silver halide element is described. This process involves encapsulating the powder within a gelatin capsule. This process avoids cross-contamination and dusting when powder is added to solvent and also reduces the use of extra solvent in the manufacture of the element.
IPC 1-7
IPC 8 full level
G03C 1/005 (2006.01); G03C 1/06 (2006.01); G03C 1/10 (2006.01); G03C 1/825 (2006.01); G03C 7/388 (2006.01)
CPC (source: EP)
G03C 1/005 (2013.01); G03C 7/388 (2013.01)
Citation (examination)
- US 4755446 A 19880705 - KEYS DALEN E [US], et al
- US 4798741 A 19890117 - NELSON JEFFREY W [US]
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0468389 A1 19920129; EP 0468389 B1 19961009; AU 632954 B2 19930114; AU 8118891 A 19920130; CA 2047285 A1 19920124; DE 69122567 D1 19961114; DE 69122567 T2 19970213; JP H04234030 A 19920821
DOCDB simple family (application)
EP 91112204 A 19910720; AU 8118891 A 19910722; CA 2047285 A 19910717; DE 69122567 T 19910720; JP 18078391 A 19910722