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SIMULTANEOS CHARGE/ILLUMINATION DICOROTRON

IP.com Disclosure Number: IPCOM000024145D
Original Publication Date: 1979-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 174K

Publishing Venue

Xerox Disclosure Journal

Abstract

Dicorotron devices have been used to perform negative charging functions in an electrophotographic environment. A corona wire is coated with a dielectric material and excited by an AC voltage capacitively coupled to the air across the dielectric sheath. A net DC current to the surface to be charged is obtained by

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XEROX DISCLOSURE JOURNAL

SIMULTANEOUS CHARGE/ILLUMINATION Proposed Classification DICOROTRON U~S.Cl. 355/3 CH


W.L 0 Heinrich mt CL G03g 15/00

Dicorotron devices have been used to perform negative charging functions in an electrophotographic environment. A corona wire is coated with a dielectric material and excited by an AC voltage capacitively coupled to the air across the dielectric sheath. A net DC current to the surface to be charged is obtained by

applying a DC bias to the surrounding corona shield.

In instances where spatial rigidity and simultaneous illumination is desired, two glass~coateddicorotron wires are positioned on opposite sides of a glass tubeS The

glass tube takes the form of a light source of appropriate optical configuration to eliminate the necessity of a separate source used to direct a beam through the clear tube, This would also be advantageous in that it would eliminate the necessity of a properly slotted shield to allow the passage of the beams It would also be possible to fill the tube with an inert gas which would fluoresce at desirable

wavelengths when excited by the high electric field gradients, allowing for the elimination of certain power requirements.

Volume 4 Number .5 September/October 1979 653

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