Patent US3396645A successfully refreshed from Google Patents.
US3396645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic printing apparatus
Assignee: EQUIPMENT DEV CORP
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Filing: 1966-09-02
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Granted: 1968-08-13
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Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Macklem F Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:24
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28; G03G15/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
PHOTOREPRODUCTION APPARATUS COMPRISING: LIGHT EXPOSURE MEANS PROVIDING A SUPPORTING SURFACE FOR A MASTER TO BE REPRODUCED, ROLLER MEANS FOR FEEDING SAID MASTER INTO SAID APPARATUS IN SUPERPOSED RELATION WITH A PHOTOELECTRIC MEMBER HAVING A PHOTOELECTRICALLY RESPONSIVE COATING ON ONE SIDE THEREOF, MEANS FOR SUPPORTING SAID MASTER AND SAID MEMBER SO THAT THE PHOTOELECTRICALLY RESPONSIVE COATING FACES AWAY FROM SAID SURFACE WHEN ACTED UPON BY SAID EXPOSURE MEANS, AN ELECTROSTATIC CHARGE REGION LOCATED BETWEEN SAID FEED ROLLS AND SAID EXPOSURE MEANS FOR IMPRESSING AN ELECTRICAL POTENTIAL ON OPPOSITE SIDES OF SAID MASTER AND MEMBER WHILE IN CONTACT WITH EACH OTHER, AND MEANS FOR ELECTROSTATICALLY DEVELOPING AN IMAGE ON SAID COATING.
Claim 2
Dependent Claim
109 words
PHOTOREPRODUCTION APPARATUS COMPRISING: LIGHT EXPOSURE MEANS PROVIDING A SUPPORTING SURFACE FOR A MASTER TO BE REPRODUCED, ROLLER MEANS FOR FEEDING SAID MASTER INTO SAID APPARATUS IN SUPERPOSED RELATION WITH A PHOTOELECTRIC MEMBER HAVING A PHOTOELECTRICALLY RESPONSIVE COATING ON ONE SIDE THEREOF, MEANS FOR SUPPORTING SAID MASTER AND SAID MEMBER SO THAT THE PHOTOELECTRICALLY RESPONSIVE COATING FACES AWAY FROM SAID SURFACE WHEN ACTED UPON BY SAID EXPOSURE MEANS, AN ELECTROSTATIC CHARGE REGION LOCATED BETWEEN SAID FEED ROLLS AND SAID EXPOSURE MEANS FOR IMPRESSING AN ELECTRICAL POTENTIAL ON OPPOSITE SIDES OF SAID MASTER AND MEMBER WHILE IN CONTACT WITH EACH OTHER, AND MEANS FOR ELECTROSTATICALLY DEVELOPING AN IMAGE ON SAID COATING.
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |