Photothermographic elements
AssigneeMinnesota Mining and Manufacturing Company
InventorOanh Van Pham
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Abstract
Radiation sensitive thermally developable imaging elements comprise: (a) photosensitive silver halide, (b) light insensitive silver salt oxidizing agent, (c) reducing agent for silver ions, and (d) a benzoyl acid class of antifoggant. The antifoggants are effective in both reducing spurious background image densities and in stabilizing the film against sensitometric changes during storage.
Claims19
A photothermographic emulsion comprising photosensitive silver halide, silver oxidizing compound, reducing agent for silver ion, and a binder which contains a fog-suppressing effective amount of a compound having the formula ##STR4## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected from the group consisting of hydrogen, halogen, cyano and nitro, with the proviso that at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are other than hydrogen, and
- A is selected from the group consisting of arylene, alkylene, aralkylene and alkarylene.
Dependencies are inferred from the claim text.