Substantially thermographic recording materials with improved stability
AssigneeAgfa-Gevaert
InventorsYvan Gilliams, Carlo Uyttendaele, Ingrid Geuens, Yvan Hoogmartens
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Abstract
A thermographic recording material comprising a support and a thermosensitive element containing a substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent therefor in thermal working relationship therewith and at least one proteinaceous binder, wherein the thermosensitive element contains between 700 ppm and 5 ppm of a non-fluoro-halide ion with respect to the proteinaceous binders in the thermosensitive element and the thermographic recording material is thermally developable under substantially water-free conditions; and a process for the production thereof.
Claims12
A thermographic recording material comprising a support and a thermosensitive element containing a substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent therefor in thermal working relationship therewith and at least one proteinaceous binder, wherein said thermosensitive element contains between 700 ppm and 5 ppm of a non-fluoro-halide ion with respect to said proteinaceous binders in said thermosensitive element and said thermographic recording material is thermally developable under substantially water-free conditions.
A process for producing a thermographic recording material having a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent therefor in thermal working relationship therewith and at least one proteinaceous binder, comprising the steps of:
- preparing an aqueous dispersion of a substantially light-insensitive silver salt of an organic carboxylic acid;
- preparing one or more aqueous coating compositions containing together said aqueous dispersion of said substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent and at least one proteinaceous binder;
- and applying said one or more aqueous coating compositions to a support thereby forming after drying said thermographic recording material, wherein said thermosensitive element contains between 700 ppm and 5 ppm of a non-fluoro-halide ion with respect to said proteinaceous binders in said thermosensitive element and said thermographic recording material is thermally developable under substantially water-free conditions.
Dependencies are inferred from the claim text.