Radiation imagery chemistry: process – composition – or product th – Thermographic process – Heat applied after imaging
Reexamination Certificate
2007-02-06
2007-02-06
Chea, Thorl (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Thermographic process
Heat applied after imaging
C430S530000, C430S619000, C430S620000, C430S964000, C430S965000
Reexamination Certificate
active
11204690
ABSTRACT:
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 Dmaxto the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
REFERENCES:
patent: 4208478 (1980-06-01), Gardner et al.
patent: 5051335 (1991-09-01), Kato
patent: 5599647 (1997-02-01), Defieuw et al.
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patent: 0 696 515 (1996-02-01), None
De Voeght Frank
Geuens Ingrid
Hoogmartens Ivan
Vanwelkenhuysen Iris
Verberckt Luc
AGFA Gevaert
Chea Thorl
Leydig Voit & Mayer Ltd
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