Patent US3003869A successfully refreshed from Google Patents.
US3003869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic plate of high quantum efficiency
Assignee: Xerox Corp
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Filing: 1957-02-11
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Granted: 1961-10-10
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Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Roland M Schaffert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
17 words
THE METHOD OF PRODUCING AN ELECTROSTATIC LATENT IMAGE CORRESPONDING TO AN OPTICAL IMAGE COMPRISING THE FOLLOWING STEPS:
Claim 2
Independent Claim
17 words
THE METHOD OF PRODUCING AN ELECTROSTATIC LATENT IMAGE CORRESPONDING TO AN OPTICAL IMAGE COMPRISING THE FOLLOWING STEPS:
Claim 3
Dependent Claim
34 words
APPLYING A D.C. ELECTRIC POTENTIAL BETWEEN TWO TRANSPARENT CONDUCTIVE LAYERS WHICH HAVE A LAYER OF ELECTROLUMINESCENT PHOSPHOR MATERIAL THEREBETWEEN WHICH LUMINESCES ONLY UNDER THE COMBINED STIMULUS OF A D.C. ELECTRIC FIELD AND ACTIVATING RADIATION,
Claim 4
Dependent Claim
34 words
APPLYING A D.C. ELECTRIC POTENTIAL BETWEEN TWO TRANSPARENT CONDUCTIVE LAYERS WHICH HAVE A LAYER OF ELECTROLUMINESCENT PHOSPHOR MATERIAL THEREBETWEEN WHICH LUMINESCES ONLY UNDER THE COMBINED STIMULUS OF A D.C. ELECTRIC FIELD AND ACTIVATING RADIATION,
Claim 5
Dependent Claim
93 words
PLACING AN UNIFORM ELECTROSTATIC CHARGE ON THE OUTER SURFACE OF A LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL WHICH IS SUPPORTED BY ON OF SAID TRANSPARENT CONDUCTIVE LAYERS, C. SUBJECTING SAID PHOSPHOR LAYER TO AN OPTICAL IMAGE BY PROJECTING SAID OPTICAL IMAGE ONTO SAID PHOSPHOR LAYER THROUGH THE SAID TRANSPARENT CONDUCTIVE LAYER WHICH IS FREE FROM SAID PHOTOCONDUCTIVE INSULATING MATERIAL WHEREBY THE RESULTING CHANGES IN ELECTRIC FIELD DISTRIBUTION PRODUCE ON ELECTROSTATIC LATENT IMAGE ON THE OUTER SURFACE OF SAID PHOTOCONDUCTIVE INSULATING MATERIAL, AND D. REMOVING SAID ELECTRIC POTENTIAL WHEN SAID ELECTROSTATIC LATENT IMAGE IS FORMED.
Claim 6
Dependent Claim
93 words
PLACING AN UNIFORM ELECTROSTATIC CHARGE ON THE OUTER SURFACE OF A LAYER OF PHOTOCONDUCTIVE INSULATING MATERIAL WHICH IS SUPPORTED BY ON OF SAID TRANSPARENT CONDUCTIVE LAYERS, C. SUBJECTING SAID PHOSPHOR LAYER TO AN OPTICAL IMAGE BY PROJECTING SAID OPTICAL IMAGE ONTO SAID PHOSPHOR LAYER THROUGH THE SAID TRANSPARENT CONDUCTIVE LAYER WHICH IS FREE FROM SAID PHOTOCONDUCTIVE INSULATING MATERIAL WHEREBY THE RESULTING CHANGES IN ELECTRIC FIELD DISTRIBUTION PRODUCE ON ELECTROSTATIC LATENT IMAGE ON THE OUTER SURFACE OF SAID PHOTOCONDUCTIVE INSULATING MATERIAL, AND D. REMOVING SAID ELECTRIC POTENTIAL WHEN SAID ELECTROSTATIC LATENT IMAGE IS FORMED.
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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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |