EP 0518627 A1 19921216 - Reducing silver sludging during photographic processing.
Title (en)
Reducing silver sludging during photographic processing.
Title (de)
Verringerung des Silberschlammes bei der photographischen Verarbeitung.
Title (fr)
Réduction de boues d'argent pendant le traitement photographiques.
Publication
Application
Priority
US 71287091 A 19910610
Abstract (en)
The deposition of a silver-containing sludge on a radiation-sensitive material having a layer of a silver halide emulsion on one surface thereof is prevented or inhibited by providing the material with a surface coating comprising a hydrophillic colloid having dispersed within it particles of wax having a mean diameter of 6 to 25 mu m, and developing the material with an alkaline solution. The specification also discloses a processing solution composition which comprises a mercapto compound and an anionic surfactant preferably alkylphenoxy polyalkylene oxy phosphoric acid sludge retardation is more effective when using a combination of the material and the processing solution.
IPC 1-7
IPC 8 full level
G03C 1/76 (2006.01); G03C 1/95 (2006.01); G03C 5/305 (2006.01)
CPC (source: EP)
G03C 1/7614 (2013.01); G03C 1/95 (2013.01); G03C 5/305 (2013.01); G03C 5/3053 (2013.01)
Citation (search report)
- [X] US 2059829 A 19361103 - WARD ERWIN J
- [X] GB 2222700 A 19900314 - ILFORD LTD [GB]
- [YD] EP 0223883 A1 19870603 - AGFA GEVAERT NV [BE]
- [Y] EP 0203521 B1 19891213
- [Y] EP 0136582 A2 19850410 - MINNESOTA MINING & MFG [US]
- [X] US 2970907 A 19610207 - JOSEPH SOTTYSIAK, et al
- [X] US 3121060 A 19640211 - DUANE JEROME J
- [XD] US 2221873 A 19401119 - JULIUS KNOEFEL
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92305303 A 19920610