Ion charging developement system

Details Ion charging developement system Ion charging developement system

1998-08-31

2000-02-08

Chen, Sophia S.

Electrophotography

Image formation

Development

399 53, 399291, 430120, G03G 1508

Patent

active

060236000

ABSTRACT:
An apparatus for developing a latent image recorded on an imaging surface, including: a housing defining a reservoir storing a supply of developer material wherein the developer material having predefined triboelectric charge about 20 to 30 microCoulombs/gram. A donor member is mounted partially in the housing and spaced from the imaging surface, for transporting toner on an outer surface of the donor member to a region opposed from the imaging surface. An electrode member is disposed in between the donor member and the imaging surface. A system is provided for loading a region of the doner member with developer material. A charging device ion charges the toner loaded on the region of the donor member to a predefined charge level. A power supply electrically biases the electrode member positioned in close proximity to the imaging member to detach toner from the region of the donor member as to form a toner cloud for developing the latent image.

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