Claims
- 1. A photoconductive composition having both high speed and high resolution, wherein the composition comprises a film forming electrically insulating polymer and a dye in the form of a dye-dye complex, having a structure according to the formula ##STR17## wherein X.crclbar. represents an anion; the dye has an absorption spectrum which changes when a binderless coating of the dye is treated with solvent vapors, and the composition containing the dye-dye complex has an absorption spectrum which is similar to the changed absorption spectrum of the dye when treated with solvent vapors.
- 2. The composition of claim 1 wherein X is perchlorate.
- 3. The composition of claim 1 or 2 wherein the composition also includes an organic photoconductor.
- 4. The composition of claim 1 or 2 wherein the composition includes an organic photoconductor selected from the group consisting of tri-p-tolylamine and (di-p-tolylaminophenyl)cyclohexane.
- 5. The composition of claim 1 or 2 wherein the dye is present in said composition in an amount of about 0.001 to 30 weight percent on a dry basis.
- 6. The composition of claim 1 or 2 wherein the polymer is selected from the group consisting of poly[4,4'-(hexahydro-4,7-methanoindan-5-ylidene)diphenylene terephthalate]; poly[4,4'-(isopropylidene)diphenylene-4,4'-oxydibenzoate]; poly[4,4'-(2-noprbornylidene)bis-(2,6-dichlorophenylene)carbonate]; poly[4,4'-(hexahydro-4,7'-methanoindan-5-ylidene)diphenylene carbonate]; poly[4,4'-(2-norbornylidene)diphenylene carbonate]; polystyrene and poly(4,4'-isopropylidenediphenylene carbonate).
- 7. An electrophotographic element comprising a conductive support, a layer of a photoconductive composition having high speed and high resolution, wherein the composition comprises a film forming electrically insulating polymer and a dye in the form of a dye-dye complex, having a structure according to the formula ##STR18## wherein X.crclbar. represents an anion; the dye has an absorption spectrum which changes when a binderless coating of the dye is treated with solvent vapors, and the composition containing the dye-dye complex has an absorption spectrum which is similar to the changed absorption spectrum of the dye when treated with solvent vapors.
- 8. The element of claim 1 wherein x is perchlorate.
- 9. The element of claim 1 or 2 wherein the composition includes an organic photoconductor.
- 10. The element of claim 1 or 2 wherein the composition includes an organic photoconductor selected from the group consisting of tri-p-tolylamine and (di-p-tolylaminophenyl)cyclohexane.
- 11. The element of claim 1 or 2 wherein the dye is present in said composition in an amount of about 0.001 to 30 weight percent on a dry basis.
- 12. The element of claim 1 or 2 wherein the polymer is selected from the group consisting of poly[4,4'-(hexahydro-4,7-methanoindan-5-ylidene)diphenylene terephthalate]; poly[4,4'-(isopropylidene)-diphenylene-4,4'-oxydibenzoate]; poly[4,4'-(2-norbornylidene)bis-(2,6-dichlorophenylene)carbonate]; poly[4,4'-(hexahydro-4,7'-methanoindan-5-ylidene)-diphenylene carbonate]; poly[4,4'-(2-norbornylidene)diphenylene carbonate]; polystyrene and poly(4,4'-isopropylidenediphenylene carbonate).
- 13. The element of claim 1 or 2 which also includes a charge-transport layer, thereby forming a multi-active photoconductive element.
Parent Case Info
This application is a continuation-in-part of U.S. patent application Ser. No. 874,971 filed Feb. 3, 1978 now abandoned which is a continuation-in-part of U.S. patent application Ser. No. 855,141 filed Nov. 28, 1977, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3615414 |
Light |
Oct 1971 |
|
3873311 |
Contois et al. |
Mar 1975 |
|
3938994 |
Reynolds et al. |
Feb 1976 |
|
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
874971 |
Feb 1978 |
|
Parent |
855141 |
Nov 1977 |
|