Claims
- 1. An imaging element for use in an electron-beam-recording process in which said element is introduced into a vacuum chamber, imagewise exposed within said vacuum chamber to an electron beam, and then processed to form a visible image; said element comprising a polyester film support having, in order, on one side thereof a conductive layer having electrical conductivity sufficient to serve as a ground plane in said electron-beam-recording process, a barrier layer, an adhesion-promoting hydrophilic colloid layer, and an imaging layer; said conductive layer comprising vanadium pentoxide, said barrier layer serving to prevent dissolution of said vanadium pentoxide during processing of said element, and said imaging layer comprising an electron-beam-sensitive silver halide emulsion, said vanadium pentoxide being present in said conductive layer in an amount sufficient to impart thereto a resistivity of less than 5.times.10.sup.8 ohms/square, and said imaging element having a visible D.sub.min of no greater than 0.07 density units and an ultraviolet D.sub.min of no greater than 0.12 density units.
- 2. An imaging element as claimed in claim 1, wherein said vanadium pentoxide is silver-doped.
- 3. An imaging element as claimed in claim 1, additionally comprising a backing layer on the side of said film support opposite to said imaging layer.
- 4. An imaging element as claimed in claim 3, wherein said backing layer comprises cross-linked gelatin.
- 5. An imaging element as claimed in claim 1, wherein said film support is a poly(ethylene terephthalate) film.
- 6. An imaging element as claimed in claim 1, wherein said conductive layer additionally comprises a vinylidene chloride/methyl acrylate/itaconic acid terpolymer.
- 7. An imaging element as claimed in claim 1, wherein said conductive layer additionally comprises a vinylidene chloride/acrylonitrile/methacrylic acid terpolymer.
- 8. An imaging element as claimed in claim 1, wherein said conductive layer additionally comprises an aqueous dispersible polyester ionomer.
- 9. An imaging element as claimed in claim 1, wherein said vanadium pentoxide is present in said conductive layer in an amount of 2 to 30 mg/m.sup.2.
- 10. An imaging element as claimed in claim 1, wherein said vanadium pentoxide is present in said conductive layer in an amount of 2 to 15 mg/m.sup.2.
- 11. An imaging element as claimed in claim 1, wherein said UV D.sub.min is no greater than 0.10 and said visible D.sub.min is no greater than 0.04.
- 12. An imaging element as claimed in claim 1, wherein said adhesion-promoting hydrophilic colloid layer is comprised of gelatin, a gelatin hardener, matte particles and a surfactant coating aid.
- 13. An imaging element as claimed in claim 1, wherein the dry coating weight of said adhesion-promoting hydrophilic colloid layer is from 40 to 200 mg/m.sup.2.
- 14. An imaging element as claimed in claim 1, wherein said barrier layer comprises an aqueous applied latex barrier polymer having hydrophilic functionality.
- 15. An imaging element as claimed in claim 1, wherein said barrier layer comprises a heat-thickening polyacrylamide barrier polymer having hydrophilic functionality.
- 16. An imaging element as claimed in claim 1, additionally comprising a protective overcoat layer which overlies the imaging layer and comprises cross-linked gelatin and at least one lubricant.
- 17. An imaging element for use in an electron-beam-recording process in which said element is introduced into a vacuum chamber, imagewise exposed within said vacuum chamber to an electron beam, and then processed to form a visible image, said element comprising a poly(ethylene terephthalate) film support having, in order, on one side thereof a subbing layer comprising a terpolymer latex of acrylonitrile, vinylidene chloride and acrylic acid, a conductive layer having electrical conductivity sufficient to serve as a ground plane in said electron-beam recording process and comprising silver-doped vanadium pentoxide and a methyl acrylate/vinylidene chloride/itaconic acid terpolymer latex, a barrier layer, an adhesion-promoting gel sub layer, and an imaging layer comprising an electron-beam-sensitive silver halide emulsion, said barrier layer serving to prevent dissolution of said silver-doped vanadium pentoxide during processing of said element, said silver-doped vanadium pentoxide being present in said conductive layer in an amount sufficient to impart thereto a resistivity of less than 5.times.10.sup.8 ohms/square, and said imaging element having a visible D.sub.min of no greater than 0.07 density units and an ultraviolet D.sub.min of no greater than 0.12 density units.
- 18. An imaging element for use in an electron-beam-recording process in which said element is introduced into a vacuum chamber, imagewise exposed within said vacuum chamber to an electron beam, and then processed to form a visible image; said element comprising a poly(ethylene terephthalate) film support having, in order, on one side thereof a subbing layer comprising a terpolymer latex of acrylonitrile, vinylidene chloride and acrylic acid, a conductive layer having electrical conductivity sufficient to serve as a ground plane in said electron-beam-recording process comprising silver-doped vanadium pentoxide and a methyl acrylate/vinylidene chloride/itaconic acid terpolymer latex, a barrier layer comprised of a methyl acrylate/vinylidene chloride/itaconic acid terpolymer latex, an adhesion-promoting gel sub layer, and an imaging layer comprising an electron-beam-sensitive silver halide emulsion, said barrier layer serving to prevent dissolution of said silver-doped vanadium pentoxide during processing of said element, said silver-doped vanadium pentoxide being present in said conductive layer in an amount sufficient to impart thereto a resistivity of less than 5.times.10.sup.8 ohms/square, and said imaging element having a visible D.sub.min of no greater than 0.07 density units and an ultraviolet D.sub.min of no greater than 0.12 density units.
Parent Case Info
This is a continuation of application Ser. No. 241,823, filed May 12, 1994, and now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
5-119433 |
May 1993 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
241823 |
May 1994 |
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