US3052540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye sensitization of electrophotographic materials
Assignee: RCA Corp
•
Filing: 1959-04-20
•
Granted: 1962-09-04
•
Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Harold G Greig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09; G03G5/06; G03G5/0664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A RECORDING ELEMENT FOR ELECTROSTATIC PHOTOGRAPHIC PRINTING CHARACTERIZED BY INHIBITING THE PHOTOCONDUCTIVE SPECTRAL RESPONSE OF PHOTOCONDUCTIVE WHITE ZINC OXIDEBINDER RECORDING ELEMENTS AND ALSO AN ADDITIONAL PHOTOCONDUCTIVE SPECTRAL RESPONSE IN THE VISIBLE REGION OF THE SPECTRUM, SAID RECORDING ELEMENT INCLUDING A PHOTOCONDUCTIVE INSULATING LAYER CONSISTING ESSENTIALLY OF FINELYDIVIDED PHOTOCONDUCTIVE WHITE ZINC OXIDE PARTICLES IN AN ELECTRICALLY-INSULATING, FILM-FORMING BINDER AND UP TO ABOUT 0.5% BY WEIGHT WITH RESPECT TO THE WEIGHT OF SAID ZINC OXIDE PARTICLES OF AT LEAST ONE OPTICALLY SENSITIZING DYE WHICH EXTENDS THE PHOTOCONDUCTIVE SPECTRAL SENSITIVITY OF SAID ZINC OXIDE IN THE VISIBLE REGION OF THE SPECTRUM, SAID ZINC OXIDE PARTICLES CONSTITUTING 50% TO 90% BY WEIGHT OF SAID LAYER AND SAID BINDER CONSTITUTING SUBSTANTIALLY ALL OF THE BALANCE OF SAID LAYER.
Claim 2
Dependent Claim
123 words
A RECORDING ELEMENT FOR ELECTROSTATIC PHOTOGRAPHIC PRINTING CHARACTERIZED BY INHIBITING THE PHOTOCONDUCTIVE SPECTRAL RESPONSE OF PHOTOCONDUCTIVE WHITE ZINC OXIDEBINDER RECORDING ELEMENTS AND ALSO AN ADDITIONAL PHOTOCONDUCTIVE SPECTRAL RESPONSE IN THE VISIBLE REGION OF THE SPECTRUM, SAID RECORDING ELEMENT INCLUDING A PHOTOCONDUCTIVE INSULATING LAYER CONSISTING ESSENTIALLY OF FINELYDIVIDED PHOTOCONDUCTIVE WHITE ZINC OXIDE PARTICLES IN AN ELECTRICALLY-INSULATING, FILM-FORMING BINDER AND UP TO ABOUT 0.5% BY WEIGHT WITH RESPECT TO THE WEIGHT OF SAID ZINC OXIDE PARTICLES OF AT LEAST ONE OPTICALLY SENSITIZING DYE WHICH EXTENDS THE PHOTOCONDUCTIVE SPECTRAL SENSITIVITY OF SAID ZINC OXIDE IN THE VISIBLE REGION OF THE SPECTRUM, SAID ZINC OXIDE PARTICLES CONSTITUTING 50% TO 90% BY WEIGHT OF SAID LAYER AND SAID BINDER CONSTITUTING SUBSTANTIALLY ALL OF THE BALANCE OF SAID LAYER.
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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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |