Microfield donors with toner agitation and the methods for their

Details Microfield donors with toner agitation and the methods for their Microfield donors with toner agitation and the methods for their

1975-02-03

1976-12-21

Stein, Mervin

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355 3DD, 427 21, G03G 1508

Patent

active

039981851

ABSTRACT:
Microfield donors used in a xerographic process and the methods for manufacturing them. The donor is provided with means for establishing a plurality of electrostatic microfields on the donor surface to attract and hold toner particles so they can be transported to a developing station. The polarity of the established microfields are continuously reversed to alternately repel and attract toner particles to the doner surface during their transportation in order to agitate the toner particles to prevent agglomeration of the particles from forming and to effect nullification of the microfield attracting the particles adjacent a photoconductor to form a high density image free of background deposits in uncharged area of the photoconductive surface.

REFERENCES:
patent: 3037478 (1962-06-01), Lace
patent: 3203394 (1965-08-01), Hope et al.
patent: 3216844 (1965-11-01), King
patent: 3257224 (1966-06-01), Jons et al.
patent: 3288602 (1966-11-01), Snelling et al.
patent: 3696783 (1972-10-01), Fantuzzo
patent: 3759222 (1973-09-01), Maksymiak et al.

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