Toner transport using superimposed traveling electric potential

Electrophotography – Image formation – Development

Patent

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Details

399265, 399258, G03G 1508

Patent

active

061379794

ABSTRACT:
An apparatus for developing a latent image recorded on an imaging surface, including: a housing defining a chamber for storing a supply of developer material comprising toner; a donor member, spaced from the imaging surface, for transporting toner on the surface thereof to a region opposed from the imaging surface, the donor member includes an electrode array on the outer surface thereof, the array including a plurality of spaced apart electrodes extending substantial across width of the surface of the donor member; and a multi-phase voltage source operatively coupled to the electrode array, for generating a first electrodynamic wave pattern for moving toner particles along the surface of the electrode array to and from a development zone and generating a second electrodynamic wave to provide a fast oscillating-like toner motion along and perpendicular to the surface of the electrode array.

REFERENCES:
patent: 4647179 (1987-03-01), Schmidlin
patent: 4743926 (1988-05-01), Schmidlin et al.
patent: 4794878 (1989-01-01), Connors et al.
patent: 4875081 (1989-10-01), Goffe et al.
patent: 5281982 (1994-01-01), Mosehauer et al.
patent: 5541716 (1996-07-01), Schmidlin
patent: 5850587 (1998-12-01), Schmidlin

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