Hybrid scavengeless development using a power supply controller

Details Hybrid scavengeless development using a power supply controller Hybrid scavengeless development using a power supply controller

1996-05-07

1998-03-31

Braun, Fred L.

Electrophotography

Image formation

Development

399291, G03G 1508

Patent

active

057349541

ABSTRACT:
An apparatus for developing a latent image recorded on a surface, including a housing defining a chamber storing a supply of developer material including toner and carrier beads. A toner donor member is spaced from the surface and is adapted to transport toner to a region opposed from the surface. A magnetic roller conveys the toner material in the chamber of the housing onto the donor member. An electrode member is spaced near the surface of a donor roll, the electrode member electrically biased by a power supply to detach toner from the donor member as to form a toner cloud for developing the latent image. A power supply controller, in communication with the power supply, is adapted to adjust the electrode member electrical biasing to avoid air breakdown induced contamination of the electrode member with toner.

REFERENCES:
patent: 5034775 (1991-07-01), Folkins
patent: 5172170 (1992-12-01), Hays et al.
patent: 5206693 (1993-04-01), Folkins
patent: 5270782 (1993-12-01), Floyd
patent: 5311258 (1994-05-01), Brewington et al.
patent: 5404208 (1995-04-01), Edmunds

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