Thermally processable imaging element including an adhesive interlayer comprising a polymer having pyrrolidone functionality
AssigneeEastman Kodak Company
InventorsCharles L. Bauer, Wayne A. Bowman
Life of this patent
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Abstract
Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polymer having pyrrolidone functionality, strongly bonds the overcoat layer to the imaging layer.
Claims22
A thermally processable imaging element, said element comprising:
- (1) a support;
- (2) a thermographic or photothermographic imaging layer;
- (3) an overcoat layer overlying said imaging layer;
- and
- (4) an adhesive interlayer bonding said overcoat layer to said imaging layer;
- said adhesive interlayer comprising a polymer having pyrrolidone functionality.
A thermally processable imaging element, said element comprising a poly(ethylene terephthalate) film support having a backing layer, comprised of poly(silicic acid) and poly(vinyl alcohol), on one side thereof and having on the opposite side, in order, a photothermographic imaging layer comprising silver halide, silver behenate and poly(vinyl butyral), an adhesive interlayer comprising poly(N-vinyl-2-pyrrolidone), and an overcoat layer comprised of poly(silicic acid) and poly(vinyl alcohol).
A thermally processable imaging element, said element comprising a poly(ethylene terephthalate) film support having a backing layer, comprised of poly(silicic acid) and poly(vinyl alcohol) on one side thereof and having on the opposite side, in order, a photothermographic imaging layer comprising silver halide, silver behenate and poly(vinyl butyral), an adhesive interlayer comprising a copolymer of 70 weight percent N-vinyl-2-pyrrolidone and 30 weight percent glycidyl methacrylate, and an overcoat layer comprised of poly(silicic acid) and poly(vinyl alcohol).
Dependencies are inferred from the claim text.