Radiation-sensitive elements having an antistatic layer containing amorphous vanadium pentoxide
AssigneeEastman Kodak Company
InventorClaude Guestaux
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Abstract
An antistatic layer of a radiation-sensitive element, such as a photographic film or paper, is formed by coating and drying of an antistatic composition comprising an aqueous solution of an amorphous antistatic material, the aqueous solution having been produced by forming a melt comprised of at least 80% by weight of vanadium pentoxide and casting the melt into a solubilizing amount of water. In addition to vanadium pentoxide, the melt can contain a glass-forming compound, such as an alkaline metal phosphate or polyphosphate, as well as an oxide of an element that exists in at least two valence states, such as an oxide of molybdenum. The radiation-sensitive element preferably includes a protective overcoat layer covering the antistatic layer.
Claims16
In a radiation-sensitive element comprising a support, at least one image-forming layer, and an antistatic layer;
- the improvement wherein said antistatic layer has been formed by the coating and subsequent drying of an antistatic composition comprising an aqueous solution of an amorphous antistatic material, said aqueous solution having been produced by forming a melt comprised of at least 80% by weight of V.sub.2 O.sub.5 and casting said melt into a solubilizing amount of water, said melt having been heated to a temperature in the range of from 790.degree. C. to 1190.degree. C. and cast into said solubilizing amount of water while at a temperature of at least 740.degree. C.
Dependencies are inferred from the claim text.