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AssigneeAgfa-Gevaert
InventorsIngrid Geuens, Luc Verberckt, Ivan Hoogmartens, Frank DeVoeght, Iris Vanwelkenhuysen
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A black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, a binder and optionally photosensitive silver halide, characterized in that the thermosensitive element further contains deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of the at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1; and the use for the purpose of increasing the ratio of Dmax to the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
A dispersion comprising at least one substantially light-insensitive organic silver salt, a suspending medium and deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of said at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1, wherein said at least one substantially light-insensitive organic silver salt is substantially insoluble in said suspending medium.
A process for producing a dispersion containing at least one substantially light-insensitive organic silver salt, a suspending medium and deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of said at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1, wherein said at least one substantially light-insensitive organic silver salt is substantially insoluble in said suspending medium, comprising the steps of:
A dispersion comprising at least one substantially light-insensitive organic silver salt, a suspending medium and deliberately added silver nano-particles in a molar ratio with respect to the total in molar concentration of said at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10−6:1, wherein said at least one substantially light-insensitive organic silver salt is substantially insoluble in said suspending medium.
Dependencies are inferred from the claim text.