Patent US3879199A successfully refreshed from Google Patents.
US3879199A
Expired / Lapsed
US
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Surface treatment of arsenic-selenium photoconductors
Assignee: Xerox Corp
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Filing: 1973-04-05
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Granted: 1975-04-22
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Expires: 1993-04-05
Abstract
Abstract A method of improving the electrical characteristics of an arsenic-selenium photoconductive layer is disclosed which comprises coating the surface of said layer with a specific thickness of an organic material which is selected from the group consisting of a mixture of vinyl chloride and vinyl acetate, chloranil, the tributylamine salt of styrene-methacrylic acid, 2,4,7-trinitro-9-fluorene, p-benzoquinone, naphthylamine, hexachlorobenzene, polyvinyl carbazole, N-vinyl carbazole, N-Ndimethylallylamine anthracene, aniline hydrochloride, mesitylene and phenoxy resins. Coating with these materials prevents surface charges contained on the photoconductive layer from injecting into the bulk of the photoconductor, thereby reducing the dark discharge characteristics of the photoconductor.
Inventors
- 👤 Michael P Trubisky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:31
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14717; G03G5/14734; G03G5/02; G03G5/04; G03G5/043; G03G5/0436; G03G5/14726; G03G5/1473; G03G5/14739
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A XEROGRAPHIC PLATE WHICH CONSISTS ESSENTIALLY OF A SUPPORTING ELECTRICALLY CONDUCTIVE SUBSTRATE, A PHOTOCONDUCTIVE LAYER CONSISTING ESSENTIALLY OF AN ARSENIC-SELENIUM ALLOY HAVING AN ARSENIC CONTENT FROM ABOUT 0.5 T 50 PERCENT BY WEIGHT OF SAID ALLOY OVERLAYING SAID SUBSTRATE, WITH SAID PHOTOCONDUCTIVE LAYER BEING OVERCOATED WITH AN ELECTRICALLY INSULATING, THIN FILM OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF; A MIXTURE OF 90 WEIGHT PERCENT VINYL CHLORIDE AND 10 WEIGHT PERCENT VINYL ACETATE, CHLORANIL, THE TRIBUTYL AMINE SALT OF STYRENEMETHACRYLIC ACID, 2,4,7-TRINITRO-9-FLUORENE, P-BENZOQUINONE, NAPHTHYLAMINE, HEXACHLOROBENZENE, POLYVINYL CARBAZOLE, NVINYL CARBAZOLE, N-N-DIMETHYLALLYLAMINE, ANTHRACENE, ANILINE HYDROCHLORIDE, MESITYLENE, AND PHENOXY RESINS, SAID FILM HAVING A THICKNESS OF BETWEEN ABOUT 25 TO 2,000 ANSTROM UNITS.
Claim 2
Dependent Claim
111 words
A XEROGRAPHIC PLATE WHICH CONSISTS ESSENTIALLY OF A SUPPORTING ELECTRICALLY CONDUCTIVE SUBSTRATE, A PHOTOCONDUCTIVE LAYER CONSISTING ESSENTIALLY OF AN ARSENIC-SELENIUM ALLOY HAVING AN ARSENIC CONTENT FROM ABOUT 0.5 T 50 PERCENT BY WEIGHT OF SAID ALLOY OVERLAYING SAID SUBSTRATE, WITH SAID PHOTOCONDUCTIVE LAYER BEING OVERCOATED WITH AN ELECTRICALLY INSULATING, THIN FILM OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF; A MIXTURE OF 90 WEIGHT PERCENT VINYL CHLORIDE AND 10 WEIGHT PERCENT VINYL ACETATE, CHLORANIL, THE TRIBUTYL AMINE SALT OF STYRENEMETHACRYLIC ACID, 2,4,7-TRINITRO-9-FLUORENE, P-BENZOQUINONE, NAPHTHYLAMINE, HEXACHLOROBENZENE, POLYVINYL CARBAZOLE, NVINYL CARBAZOLE, N-N-DIMETHYLALLYLAMINE, ANTHRACENE, ANILINE HYDROCHLORIDE, MESITYLENE, AND PHENOXY RESINS, SAID FILM HAVING A THICKNESS OF BETWEEN ABOUT 25 TO 2,000 ANSTROM UNITS.
Claim 3
Dependent Claim
111 words
A xerographic plate which consists essentially of a supporting electrically conductive substrate, a photoconductive layer consisting essentially of an arsenic-selenium alloy having an arsenic content from about 0.5 to 50 percent by weight of said alloy overlaying said substrate, with said photoconductive layer being overcoated with an electrically insulating, thin film of a material selected from the group consisting of; a mixture of 90 weight percent vinyl chloride and 10 weight percent vinyl acetate, chloranil, the tributyl amine salt of styrenemethacrylic acid, 2,4,7-trinitro-9-fluorene, p-benzoquinone, naphthylamine, hexachlorobenzene, polyvinyl carbazole, N-vinyl carbazole, N-N-dimethylallylamine, anthracene, aniline hydrochloride, mesitylene, and phenoxy resins, said film having a thickness of between about 25 to 2,000 Anstrom Units.
Claim 4
Dependent Claim
111 words
A xerographic plate which consists essentially of a supporting electrically conductive substrate, a photoconductive layer consisting essentially of an arsenic-selenium alloy having an arsenic content from about 0.5 to 50 percent by weight of said alloy overlaying said substrate, with said photoconductive layer being overcoated with an electrically insulating, thin film of a material selected from the group consisting of; a mixture of 90 weight percent vinyl chloride and 10 weight percent vinyl acetate, chloranil, the tributyl amine salt of styrenemethacrylic acid, 2,4,7-trinitro-9-fluorene, p-benzoquinone, naphthylamine, hexachlorobenzene, polyvinyl carbazole, N-vinyl carbazole, N-N-dimethylallylamine, anthracene, aniline hydrochloride, mesitylene, and phenoxy resins, said film having a thickness of between about 25 to 2,000 Anstrom Units.
Claim 5
Dependent Claim
24 words
The plate of claim 1 wherein said alloy has an arsenic content in an amount of about 40 percent by weight of said alloy.
Claim 6
Dependent Claim
24 words
The plate of claim 1 wherein said alloy has an arsenic content in an amount of about 20 percent by weight, of said alloy.
Claim 7
Dependent Claim
23 words
The plate of claim 1 wherein said alloy has an arsenic content in an amount of about 16 percent weight of said alloy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |