Patent ID: 6223013
Filing Date: 2001-04-24
Classification: G03G

Abstract:
An apparatus for developing a latent image recorded on an imaging surface, comprising:a housing defining a reservoir storing a supply of developer material comprising toner;a donor member, spaced from the imaging surface, for transporting toner on an outer surface of said donor member to a region opposed from the imaging surface;means for loading a toner layer onto a region of said outer surface of said donor member;means for ion charging said toner loaded on the region of said donor member;means for supplying an AC plus DC electrical biasing to said donor member positioned in close proximity to said imaging member to detach toner from said region of said donor member as to form a toner cloud for developing the latent image, said AC bias ranges from 0 to 1000 volts peak-to-peak; andmeans for discharging and removing residual toner on the region of said donor and returning said toner to the reservoir.