Patent US3843906A successfully refreshed from Google Patents.
US3843906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing the generation of ozone
Assignee: Kalle GmbH and Co KG
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Filing: 1973-03-19
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Granted: 1974-10-22
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Expires: 1993-03-19
Abstract
Abstract An apparatus for the reduction in the generation of ozone during the discharge of corona wires which includes the wire surrounded on three sides by a screen and on the fourth side by a surface accepting a charge with a possible grid arranged in front of the surface. The method involves connecting the screen to a voltage between that of the support of the charge accepting surface and that of the corona wire.
Inventors
- 👤 K Leibrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:21
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0291
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
Corona discharge apparatus comprising, a. at least one corona wire, b. an electrically conductive screen which surrounds the corona wire or wires on three sides, c. a grid arranged between a photoconductor layer and the fourth, open, side of the screen, with the corona wires, the screen, and the grid being electrically insulated from each other, d. a first voltage source for the corona wire or wires, e. a second voltage source for the grid, and f. a third voltage source for the screen, the voltage of the latter lying between the voltage of the first voltage source and that of a photoconductor support.
Claim 2
Dependent Claim
104 words
Corona discharge apparatus comprising, a. at least one corona wire, b. an electrically conductive screen which surrounds the corona wire or wires on three sides, c. a grid arranged between a photoconductor layer and the fourth, open, side of the screen, with the corona wires, the screen, and the grid being electrically insulated from each other, d. a first voltage source for the corona wire or wires, e. a second voltage source for the grid, and f. a third voltage source for the screen, the voltage of the latter lying between the voltage of the first voltage source and that of a photoconductor support.
Claim 3
Dependent Claim
48 words
Corona discharge apparatus according to claim 1, in which the corona wires consist of 50 Mu thick tungsten wire, the first voltage source supplies from -6 to -8 kV, the second voltage source supplies between -600 and -1,000 V, and the third voltage source supplies about -2 kV.
References Cited (Backward Citations)
US3611074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |