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Corona Design With Ozone Ducts

IP.com Disclosure Number: IPCOM000046594D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Adley, JM: AUTHOR [+3]

Abstract

Corona generators are used in electrophotographic machines for various purposes including the charging of the photoconductive material. Ozone generated by the corona must be removed for safety and the generator wires kept clean from dust in order to prevent streaks on copies. This article shows a corona design in which ozone ducts are included between the mounting rails and the corona shield with a flow of air which curtains the corona wire from contamination. As shown in the figure, clean air is drawn into the corona, through the end blocks 7 under the influence of a vacuum attached to exit ports 6. The clean air advances into the emission area 4 of the corona and into the ozone ducts 3 on either side of the corona.

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Corona Design With Ozone Ducts

Corona generators are used in electrophotographic machines for various purposes including the charging of the photoconductive material. Ozone generated by the corona must be removed for safety and the generator wires kept clean from dust in order to prevent streaks on copies. This article shows a corona design in which ozone ducts are included between the mounting rails and the corona shield with a flow of air which curtains the corona wire from contamination. As shown in the figure, clean air is drawn into the corona, through the end blocks 7 under the influence of a vacuum attached to exit ports 6. The clean air advances into the emission area 4 of the corona and into the ozone ducts 3 on either side of the corona. These ducts are formed by corona guide rails 2 sliding into the corona mounting rails 1, thus positioning the corona as well as forming the ducts. This flow of air prevents toner or other contaminants from entering the corona, similar to an air curtain. Air from exit ports 6 is sent into charcoal filters to remove ozone and contaminants before the air is allowed to enter the atmosphere.

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