Patent ID: 6965746
Filing Date: 2005-11-15
Classification: G03G

Abstract:
1. A method of for developing a latent electrostatic image recorded with marking particles, to form a developed image, comprising: moving the surface of an image receiving member at a predetermined process speed: storing a supply of developer material comprising toner and carrier beads in a reservoir, said toner comprising electrically conductive core particles with an electrically insulating coating thereover: transporting marking particles onto an outer surface of a donor member to be delivered to a development zone adjacent the image receiving member; said transporting includes attracting said developer material from said reservoir with a magnetic member; generating a magnetic brush comprise of said toner and said carrier beads; and delivering toner to said donor member; and inductive charging electrically conductive core particles of said toner onto said outer surface of said donor member prior to the development zone to a predefined charge level said inductive charging includes the step of AC and DC biasing said magnetic brush relative to the donor member to achieve electrical breakdown of an electrically insulating coating of said toner thereby inducing charge in said toner.