Patent US4030992A successfully refreshed from Google Patents.
US4030992A
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US
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Process for preparation of a solid phase dispersion of photoconductive materials
Assignee: Xerox Corp
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Filing: 1976-01-15
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Granted: 1977-06-21
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Expires: 1996-01-15
Abstract
Abstract Process for preparation of a solid phase dispersion of photoconductive materials in an insulating binder matrix from a film forming insulating polymeric resin and an organo-selenium compound capable of undergoing selective decomposition in response to an appropriate stimulus; whereby, elemental selenium is extruded from said organo-selenium compound and deposited in the binder matrix. Because this extrusion/deposition of elemental selenium can be performed selectively, it is possible to prepare binder films having photoconductive image patterns which are suitable for use in range extended and conventional xerography.
Inventors
- 👤 Joseph Y. C. Chu
- 👤 W. H. H. Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:44
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/08; G03G5/087; H; H10; H10F; H10F30/00; H10F30/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A process for preparation of a solid phase dispersion of inorganic photoconductive materials in an insulating polymeric matrix comprising: a. forming a polymeric composition from a film forming insulating polymeric resin and at least one organoselenium compound of the formula ##STR7## wherein R, R', R", R'", R iv and R v are independently selected from hydrogen, alkyl of 1 - 10 carbon atoms, phenyl, substituted phenyl, benzyl, and substituted benzyl; and b. subjecting said polymeric composition to sufficient energy to decompose said organoselenium compound whereby elemental selenium is deposited in the organic polymeric composition in substantial conformity with the distribution of said energy throughout the composition.
Claim 2
Dependent Claim
106 words
A process for preparation of a solid phase dispersion of inorganic photoconductive materials in an insulating polymeric matrix comprising: a. forming a polymeric composition from a film forming insulating polymeric resin and at least one organoselenium compound of the formula ##STR7## wherein R, R', R", R'", R iv and R v are independently selected from hydrogen, alkyl of 1 - 10 carbon atoms, phenyl, substituted phenyl, benzyl, and substituted benzyl; and b. subjecting said polymeric composition to sufficient energy to decompose said organoselenium compound whereby elemental selenium is deposited in the organic polymeric composition in substantial conformity with the distribution of said energy throughout the composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |