EP 1186949 A1 20020313 - Photothermographic materials
Title (en)
Photothermographic materials
Title (de)
Photothermographische Materialien
Title (fr)
Matériaux photothermographiques
Publication
Application
Priority
- EP 01000386 A 20010817
- EP 00203136 A 20000911
Abstract (en)
A process for producing an aqueous dispersion comprising: preparing a dispersion of photosensitive silver halide and a binder or a surfactant in an aqueous medium; and subsequently either (a) adding a first silver salt to the silver halide dispersion and then adding a second silver salt; or (b) adding the second silver salt to the silver halide dispersion and then adding the first silver salt, wherein the aqueous dispersion is substantially free of a water-soluble metal or ammonium salt of an aliphatic carboxylic acid with greater than 12 carbon atoms, the first silver salt is a substantially light-insensitive and substantially water-insoluble silver salt of an organic carboxylic acid, and the second silver salt has a water-solubility greater than 0.1 g in 1 L of water at 20 DEG C; an aqueous dispersion obtainable therewith; a photothermographic recording material prepared with the aqueous dispersion; and a process for preparing the photothermographic recording material. In addition the use of the second silver salt for increasing the sensitivity of a photothermographic recording material is provided.
IPC 1-7
IPC 8 full level
G03C 1/498 (2006.01)
CPC (source: EP)
G03C 1/49845 (2013.01)
Citation (search report)
- [X] EP 0754969 A2 19970122 - AGFA GEVAERT NV [BE]
- [A] EP 0715209 A2 19960605 - FUJI PHOTO FILM CO LTD [JP]
- [A] US 3615533 A 19711026 - RAUNER FREDERICK J, et al
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01000386 A 20010817