US3084061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for formation of electro-static image
Assignee: Xerox Corp
•
Filing: 1953-09-23
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Granted: 1963-04-02
•
Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Hall Richard Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/18; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10S430/00; Y10S430/138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
THE METHOD OF IMAGE FORMATION IN WHICH A LIGHT INSENSITIVE ELECTROSTATIC IMAGE IS FORMED AND DEVELOOPED ON AN INSULATING LAYER HAVING A FIRST SURFACE IN CONTACT WITH AN ELECTROSTATIC IMAGE BEARING SURFACE COMPRISING BRINGING ALL AREAS OF THE OPPOSITE AND SECOND SURFACE OF SAID INSULATNG LAYER TO A SUBSTANTIALLY UNIFORM ELECTRIC POTENTIAL IN WHICH THE CHARGE DENSITY VARIES IN ACCORDANCE WITH THE IMAGE ON THE IMAGE BEARING SURFACE WHEREBY A PERSISTENCE PATTERN, CONFORMING IN CONFIGURATION TO THE IMAGE ON THE IMAGE BEARING SURFACE, OF ACTUAL AND REAL ELECTROSTATIC CHARGES IS FORMED ON THE INSULATING LAYER, SAID ELECTRIC POTENTIAL APPLIED TO SAID SECOND SURFACE OF SAID INSULATING LAYER BEING MAINTAINED AT A LEVEL TO AVOID SECONDARY DISCHARGE EFFECTS BETWEEN SAID IMAGE BEARING SURFACE AND SAID INSULATING LAYER, REMOVING THE ELECTRIC FIELD OF THE ELECTROSTATIC IMAGE ON THE IMAGE BEARING SURFACE FROM SAID INSULATING LAYER, AND DEVELOPING THE PATTERN ON THE INSULATING LAYER BY DEPOSITING DEVELOPER MATERIAL THEREON.
Claim 2
Independent Claim
156 words
THE METHOD OF IMAGE FORMATION IN WHICH A LIGHT INSENSITIVE ELECTROSTATIC IMAGE IS FORMED AND DEVELOOPED ON AN INSULATING LAYER HAVING A FIRST SURFACE IN CONTACT WITH AN ELECTROSTATIC IMAGE BEARING SURFACE COMPRISING BRINGING ALL AREAS OF THE OPPOSITE AND SECOND SURFACE OF SAID INSULATNG LAYER TO A SUBSTANTIALLY UNIFORM ELECTRIC POTENTIAL IN WHICH THE CHARGE DENSITY VARIES IN ACCORDANCE WITH THE IMAGE ON THE IMAGE BEARING SURFACE WHEREBY A PERSISTENCE PATTERN, CONFORMING IN CONFIGURATION TO THE IMAGE ON THE IMAGE BEARING SURFACE, OF ACTUAL AND REAL ELECTROSTATIC CHARGES IS FORMED ON THE INSULATING LAYER, SAID ELECTRIC POTENTIAL APPLIED TO SAID SECOND SURFACE OF SAID INSULATING LAYER BEING MAINTAINED AT A LEVEL TO AVOID SECONDARY DISCHARGE EFFECTS BETWEEN SAID IMAGE BEARING SURFACE AND SAID INSULATING LAYER, REMOVING THE ELECTRIC FIELD OF THE ELECTROSTATIC IMAGE ON THE IMAGE BEARING SURFACE FROM SAID INSULATING LAYER, AND DEVELOPING THE PATTERN ON THE INSULATING LAYER BY DEPOSITING DEVELOPER MATERIAL THEREON.
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |