US3335274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic charging apparatus with means to automatically control the potential applied to the corona wire
Assignee: Xerox Corp
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Filing: 1964-12-04
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Granted: 1967-08-08
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Codichini
- 👤 Eugene W Yurgealitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:37
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04; G; G03; G03G; G03G15/00; G03G15/02; G03G15/0266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A XEROGRAPHIC REPRODUCING APPARATUS HAVING A CORONA GENERATING DEVICE WITH AT LEAST ONE CORONA WIRE POSITIONED IN CLOSELY SPACED RELATION TO A XEROGRAPHIC PLATE FOR APPLYING AN ELECTROSTATIC CHARGE ONTO THE XEROGRAPHIC PLATE, AND WHEREIN THE CHARGING CURRENT TO THE XEROGRAPHIC PLATE IS PRODUCED BY THE POTENTIAL APPLIED TO THE CORONA WIRE WHEREBY AN INCREASE IN POTENTIAL ON THIS WIRE WILL EFFECT AN INCREASE IN CHARGING CURRENT AND A DECREASE IN THIS POTENTIAL WILL EFFECT A DECREASE IN CHARGING CURRENT; A CIRCUIT FOR THE CORONA GENERATING DEVICE INCLUDING A HIGH VOLTAGE DIRECT CURRENT SOURCE, A CONTROL TUBE HAVING A CATHODE, AN ANODE AND A GRID, SAID CATHODE BEING ELECTRICALLY CONNECTED TO SAID WIRE, SAID ANODE BEING ELECTRICALLY CONNECTED TO THE POSITIVE TERMINAL OF SAID SOURCE, AN ELECTRICAL CONNECTION BETWEEN THE XEROGRAPHIC AND THE NEGATIVE TERMINAL OF SAID SOURCE,
Claim 2
Dependent Claim
139 words
IN A XEROGRAPHIC REPRODUCING APPARATUS HAVING A CORONA GENERATING DEVICE WITH AT LEAST ONE CORONA WIRE POSITIONED IN CLOSELY SPACED RELATION TO A XEROGRAPHIC PLATE FOR APPLYING AN ELECTROSTATIC CHARGE ONTO THE XEROGRAPHIC PLATE, AND WHEREIN THE CHARGING CURRENT TO THE XEROGRAPHIC PLATE IS PRODUCED BY THE POTENTIAL APPLIED TO THE CORONA WIRE WHEREBY AN INCREASE IN POTENTIAL ON THIS WIRE WILL EFFECT AN INCREASE IN CHARGING CURRENT AND A DECREASE IN THIS POTENTIAL WILL EFFECT A DECREASE IN CHARGING CURRENT; A CIRCUIT FOR THE CORONA GENERATING DEVICE INCLUDING A HIGH VOLTAGE DIRECT CURRENT SOURCE, A CONTROL TUBE HAVING A CATHODE, AN ANODE AND A GRID, SAID CATHODE BEING ELECTRICALLY CONNECTED TO SAID WIRE, SAID ANODE BEING ELECTRICALLY CONNECTED TO THE POSITIVE TERMINAL OF SAID SOURCE, AN ELECTRICAL CONNECTION BETWEEN THE XEROGRAPHIC AND THE NEGATIVE TERMINAL OF SAID SOURCE,
References Cited (Backward Citations)
US3062956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |