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Corona Treatment of Xerographic Paper

IP.com Disclosure Number: IPCOM000045193D
Original Publication Date: 1983-Feb-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Farrow, MM: AUTHOR [+2]

Abstract

The side of paper which will be used to carry a xerographic toner image is treated with corona discharge in order to change the composition of the paper's surface, thus producing a more permanently fused toner image. This procedure can be used during paper manufacture or, alternatively, within the xerographic copier as a sheet of paper is transported to the copier's transfer station.

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Corona Treatment of Xerographic Paper

The side of paper which will be used to carry a xerographic toner image is treated with corona discharge in order to change the composition of the paper's surface, thus producing a more permanently fused toner image. This procedure can be used during paper manufacture or, alternatively, within the xerographic copier as a sheet of paper is transported to the copier's transfer station.

The action of corona discharge on the paper's surface is to oxidize hydrocarbon materials on the surface of the paper. Exemplary materials are cellulose, starch, rosin and chemically reactive sizing (such as AQUAPEL (Trademark of Hercules Chemical Co.). As a result, the paper more permanently accepts fused-on toner. In addition, less triboelectric charging of the paper occurs during paper feeding, and thus fewer paper jams occur during copier operation.

While the corona current density is not critical, it must be high enough to substantially eliminate the presence of unoxidized hydrocarbons on the toner side of the paper. Treating both sides of the paper also minimizes triboelectric charging of the paper during paper feeding.

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