Claims
- 1. In a photographic element comprising a support having coated thereon (a) at least one radiation-sensitive layer and (b) a conductive layer comprising a coalesced, cationically stabilized latex binder and a semiconductor, the improvement wherein said semiconductor is associated with the polymer particles of said latex and said semiconductor is a polyaniline acid addition salt.
- 2. A photographic element according to claim 1 wherein said radiation-sensitive layer comprises a photographic silver salt emulsion.
- 3. An element according to claim 1 wherein said conductive layer is coated with a protective layer.
- 4. An element according to claim 1 wherein said protective layer comprises a polymer selected from the group consisting of poly(n-butyl acrylate-co-styrene), poly(n-butyl acrylate-co-methyl methacrylate), poly(n-butyl methacrylate-co-styrene) and poly(methyl methacrylate).
- 5. An element according to claim 1 wherein the weight ratio of latex to polyaniline is between 4:1 and 10:1.
- 6. An element according to claim 1 wherein the polyaniline of said polyaniline salt is selected from the group consisting of:
- N-{p-[4-(p-methoxyanilino)anilino]phenyl}-1,4-benzoquinone imine and
- N-{p-[p-(anilino)anilino]phenyl}-1,4-benzoquinone diimine.
- 7. An element according to claim 1 wherein said polyaniline salt is the phosphoric acid addition salt.
- 8. An element according to claim 1 wherein said coalesced latex comprises cationically stabilized, coalesced, substantially linear, polyurethane urea.
- 9. An element according to claim 1 wherein said coalesced latex comprises coalesced particles of poly(N-butylmethacrylate-co-vinylbenzyl chloride) (90/10) quaternized with trimethylamine.
- 10. In an electrographic element comprising a support having coated thereon a conductive layer and an outermost dielectric layer, the improvement wherein said conductive layer comprises a coalesced, cationically stabilized latex binder and a polyaniline acid addition salt semiconductor, wherein said semiconductor is associated with the polymer particles of said latex.
- 11. An element according to claim 10 wherein said dielectric layer further comprises a matting agent.
- 12. An element according to claim 10 wherein the polyaniline of said polyaniline salt is selected from the group consisting of:
- N-{p-[4-(p-methoxyanilino)anilino]phenyl}-1,4-benzoquinone imine and
- N-{p-[p-(anilino)anilino]phenyl}-1,4-benzoquinone diimine.
- 13. An element according to claim 10 wherein said polyaniline salt is a phosphoric acid addition salt.
- 14. An element according to claim 10 wherein said latex binder comprises cationically stabilized, substantially linear polyurethane urea.
Parent Case Info
This is a division of application Ser. No. 12,690, filed Feb. 16, 1979 U.S. Pat. No. 4,237,194.
US Referenced Citations (3)
Divisions (1)
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Number |
Date |
Country |
Parent |
12690 |
Feb 1979 |
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