Claims
- 1. A thermally processable imaging element, said element comprising:
- (1) a support;
- (2) a thermographic or photothermographic imaging layer on one side of said support;
- (3) a protective overcoat layer which is an outermost layer on the same side of said support as said imaging layer; and
- (4) a backing layer which is an outermost layer located on the side of said support opposite to said imaging layer;
- wherein said thermally processable imaging element comprises polymeric matte particles in at least one layer thereof; said polymeric matte particles comprising a polymeric core surrounded by a layer of colloidal inorganic particles.
- 2. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles are present in said protective overcoat layer.
- 3. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles are present in said backing layer.
- 4. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles are present in both said protective overcoat layer and said backing layer.
- 5. A thermally processable imaging element as claimed in claim 1, wherein said support is a poly(ethylene terephthalate) film.
- 6. A thermally processable imaging element as claimed in claim 1, wherein said imaging layer comprises:
- (a) photographic silver halide,
- (b) an image-forming combination comprising
- (i) an organic silver salt oxidizing agent, with
- (ii) a reducing agent for the organic silver salt oxidizing agent, and
- (c) a toning agent.
- 7. A thermally processable imaging element as claimed in claim 1, wherein said imaging layer comprises:
- (a) photographic silver halide,
- (b) an image-forming combination comprising
- (i) silver behenate, with
- (ii) a phenolic reducing agent for the silver behenate,
- (c) a succinimide toning agent, and
- (d) an image stabilizer.
- 8. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles have a mean particle diameter in the range of from about 0.5 to about 5 micrometers.
- 9. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles have a mean particle diameter in the range of from about 0.5 to about 2 micrometers.
- 10. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles have a mean particle diameter in the range of from about 0.6 to about 1 micrometer.
- 11. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles are present therein in an amount of from about 10 to about 200 mg/m.sup.2.
- 12. A thermally processable imaging element as claimed in claim 1, wherein said polymeric matte particles are present therein in an amount of from about 20 to about 70 mg/m.sup.2.
- 13. A thermally processable imaging element is claimed in claim 1, wherein said colloidal inorganic particles are silica particles.
- 14. A thermally processable imaging element as claimed in claim 1, wherein said polymeric core is comprised of vinyl toluene crosslinked with divinylbenzene.
- 15. A thermally processable imaging element as claimed in claim 1, wherein said polymeric core is comprised of a crosslinked methyl methacrylate polymer.
- 16. A thermally processable imaging element as claimed in claim 1, wherein said polymeric core comprises a non-reactive hydrophobe.
- 17. A thermally processable imaging element as claimed in claim 1, wherein said polymeric core comprises hexadecane.
- 18. A thermally processable imaging element as claimed in claim 1, wherein said protective overcoat layer comprises poly(silicic acid).
- 19. A thermally processable imaging element as claimed in claim 1, wherein said protective overcoat layer comprises poly(silicic acid) and a water-soluble hydroxyl-containing monomer or polymer.
- 20. A thermally processable imaging element as claimed in claim 1, wherein said protective overcoat layer comprises poly(silicic acid) and poly(vinyl alcohol).
- 21. A thermally processable imaging element, said element comprising:
- (1) a support;
- (2) a photothermographic imaging layer on one side of said support; said photothermographic imaging layer comprising:
- (a) photographic silver halide,
- (b) an image-forming combination comprising
- (i) an organic silver salt oxidizing agent, with
- (ii) a reducing agent for the organic silver salt oxidizing agent, and
- (c) a toning agent;
- (3) a protective overcoat layer which is an outermost layer on the same side of said support as said photothermographic imaging layer; said protective overcoat layer containing poly(silicic acid) and polymeric matte particles comprising a polymeric core surrounded by a layer of colloidal inorganic particles; and
- (4) a backing layer which is an outermost layer located on the side of said support opposite to said imaging layer.
- 22. A thermally processable imaging element, said element comprising:
- (1) a polyethylene terephthalate support,
- (2) a photothermographic imaging layer on one side of said support, said photothermographic imaging layer comprising:
- (a) photographic silver halide,
- (b) an image-forming combination comprising
- (i) silver behenate, with
- (ii) a phenolic reducing agent for the silver behenate,
- (c) a succinimide toning agent, and
- (d) an image stabilizer;
- (3) a protective overcoat layer which is an outermost layer on the same side of said support as said photothermographic imaging layer, said protective overcoat layer containing poly(silicic acid), poly(vinyl alcohol) and polymeric matte particles comprising a polymeric core surrounded by a layer of colloidal silica particles; and
- (4) a backing layer which is an outermost layer on the side of said support opposite to said imaging layer.
- 23. A thermally processable imaging element, said element comprising:
- (1) a support;
- (2) a thermographic or photographic imaging layer on one side of said support;
- (3) a protective overcoat layer with is an outermost layer of the same side of said support as said imaging layer; and
- (4) a backing layer which is an outermost layer located on the side of said support opposite to said imaging layer;
- wherein said thermally processable imaging element comprises both polymeric matte particles and poly(silicic acid) in at least one layer thereof; said polymeric matte particle comprising a polymeric core surrounded by a layer of colloidal silica particles.
Parent Case Info
This is a Continuation of application Ser. No. 08/421,178, filed 13 Apr., 1995, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
421178 |
Apr 1995 |
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