Solid state corona discharger
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United States of America Patent
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Dec 2, 1986
Grant Date -
N/A
app pub date -
Jan 25, 1985
filing date -
Jan 25, 1984
priority date (Note) -
Expired
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Abstract
A solid state corona discharger in corona chargers which charge and discharge photosensitive members in electrophotographic copying machines, ozone generators and the like. The solid state corona discharger has paired strip-shape ac electrodes which are arranged side by side nearly in parallel and spaced away from each other not to initiate discharge, a dielectric member layer which covers at least one side of the external surfaces enveloping both electrodes, and a thin dc-applied electrode which is in contact with one side of external surface of said dielectric layer and makes up a closed circuit loop of capacitances together with said ac electrodes (not connected in terms of direct current), as well as characterized by producing corona discharge between said ac electrodes and a dc-applied electrode with an ac power supply applied across said ac electrodes. In using the solid state corona discharger according to said configuration as a charger for a thin substance to be charged, the substance is charged by placing a dc-applied electrode opposite to the surface of the substance; connecting a dc power source between the dc-applied electrode and the surface to be charged; and generating a dc electric field between the solid state corona discharger and said surface to be charged; as well as by initiating corona discharge between an ac electrode and a dc-applied electrode.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- RICOH COMPANY, LTD.
International Classification(s)
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Ikeda, Itsuo | Sagamihara, JP | 14 | 348 |
Miyagawa, Seiichi | Nagareyama, JP | 3 | 68 |
Suzuki, Shigeru | Yokohama, JP | 293 | 3003 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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