Patent ID: 6025109
Filing Date: 2000-02-15
Classification: G03G

Abstract:
A method for transferring a toner image on an image carrier to a sheet, comprising the steps of:applying a first bias current to a transferring device which contacts said image carrier when said sheet is not at a nip between said image carrier and said transferring device after said image carrier starts rotating after a print start request is input until said sheet reaches said nip;applying a second bias current having a same polarity as said first bias current to said transferring device when said sheet is at said nip to transfer said toner image on said image carrier to said sheet;applying a first cleaning bias current having a same polarity as said toner image to said transferring device before said print start request is inputted; andapplying to said transferring device a second cleaning bias current having an opposite polarity as said first bias cleaning current before said print start request is inputted.