Electrophotography – Image formation – Development
Patent
1997-06-30
1998-09-15
Royer, William J.
Electrophotography
Image formation
Development
399291, G03G 1508
Patent
active
058093850
ABSTRACT:
An acoustic scavengeless assist (ASA) development apparatus, and a multicolor image reproduction machine including such a development apparatus. The (ASA) development apparatus includes a biased vibratory section having a piezoelectric member and a donor member, as well as, a development electrode section, for presenting toner particles to latent electrostatic images for image development. The donor member is positioned within the reproduction machine and forms a development nip with a latent image bearing surface of a photoreceptor of the reproduction machine. Importantly, the biased vibratory section has at least a first conductive electrode formed therein adjacent to the piezoelectric member for effecting controlled vibratory toner release from the donor member, and a first bias for biasing the at least first conductive electrode. The development electrode section includes a set of second conductive electrodes and a second bias therefor, and is located between the at least first electrode and the latent image bearing surface, for enhancing toner particle release from the donor member, and powder cloud formation within the development nip for quality image development.
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Folkins Jeffrey J.
Hays Dan A.
Mashtare Dale R.
Snelling Christopher
Nguti Tallam I.
Royer William J.
Xerox Corporation
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