Scavenging field for electrostatographic printing machine

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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134 1, 361225, 355245, 355261, G03G 2100

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048371041

ABSTRACT:
An imaging process having reduced toner contamination of the printing machine and copies produced therefrom is provided where successive developed toner images are formed on successive registered areas of an endless imaging member movable through a path past a plurality of processing stations by creating an electrostatic fringe field across the width of the imaging member in advance of the lead edge of developed toner image in a registered area of the image member of sufficient magnitude to attract otherwise contaminating toner thereto as it traverses the path whereby contaminating toner is not attracted to successive registered areas of the imaging member. In a preferred embodiment the fringe scavenger filed has a gradient more than 15 volts per millimeter.

REFERENCES:
patent: 3883349 (1975-05-01), Sato
patent: 4479709 (1984-10-01), Syukuri et al.
patent: 4647186 (1987-03-01), Armstrong et al.
Hausle et al, "Electrophotographic Process", IBM Tech. Discl. Bull., vol. 19, No. 4, Sep. 1976, p. 1412.

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