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US 5,885,765 AGranted
Thermographic recording material with improved tone reproduction
AssigneeAgfa-Gevaert
InventorsBartholomeus Horsten, Vankeerberghen An, Leenders Luc
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AssigneeAgfa-Gevaert
InventorsBartholomeus Horsten, Vankeerberghen An, Leenders Luc
Estimating the term…
A recording material for producing high contrast images comprising at least one thermosensitive element, comprising a layer comprising a substantially light-insensitive organic silver salt in at least one binder and in thermal working relationship therewith an organic reducing agent therefor, on a support, characterized in that the recording material is light-insensitive and the layer contains colloidal particles comprising silicon dioxide at a coating weight given by expression (1): ##EQU1## wherein B represents the total weight of all binders in the layer, AGOS represents the total weight of organic silver salt in the layer and S represents the weight of the colloidal particles in the layer; and wherein a protective layer is optionally applied to the thermosensitive element being thereby an outermost layer of the recording material.
A recording material comprising at least one thermosensitive element, comprising a layer comprising at least one substantially light-insensitive organic silver salt in at least one binder and in thermal working relationship therewith an organic reducing agent therefor, on a support, characterized in that said recording material is light-insensitive and said layer contains colloidal particles comprising silicon dioxide at a coating weight given by expression (1):
A thermal image forming process for producing high contrast images comprising the steps of:
Dependencies are inferred from the claim text.