Toner agitation through microfield donor

Details Toner agitation through microfield donor Toner agitation through microfield donor

1976-05-24

1977-04-12

Kaplan, Morris

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

B05D 106

Patent

active

040176487

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 donor 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
patent: 3696783 (1972-10-01), Fantuzzo
patent: 3759222 (1973-09-01), Maksymiak

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