BRUSH BACK-UP SUPPORT FOR PHOTORECEPTOR CHARGING
Original Publication Date: 1986-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
In electrostatographic reproducing apparatus it is desired to apply a uniform charge to the hotoreceptor prior to exposure in order to insure a faithful be experienced with flexible endless photoreceptor belts which at times may form waves in the belt which if present opposite the charging device can lead to non-uniform charging on the photoreceptor belt. The Figure illustrates a device which can be used to eliminate the flutter in a photoreceptor belt. In the Figure the belt module 10 is illustrated comprising a belt 12 which is driven by means not shown around roll 16 and roll 14 through the various processing stations of electrostatographic apparatus including charging, exposure development, transfer and cleaning. Illustrated in this Figure is a conventional scorotron charging device 18. Opposite the scorotron and on the underside of the photoreceptor belt is a fibrous brush 20 extending across the width of the photoreceptor belt and in contact therewith which is used to control belt flutter and smooth any waves in the photoreceptor thereby achieving uniform charging. The fibrous brush may, for example, be made of polypropylene or other suitable material and in addition to smoothing out any waves in the photoreceptor may serve to clean the backside of the photoreceptor belt during operation.