COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)D. Transfer BlockIn this block, the toner image on the surface of the photosensitive drum is transferredto paper by way of the intermediate transfer drum.Step 5 (primary transfer)The intermediate transfer drum is charged to positive potential from its inside to movethe toner from the surface of the photosensitive drum to the intermediate transfer drum.This process is repeated for each color (Y, M, C, Bk) in sequence.A DC bias (positive) is applied to the intermediate transfer drum during printing oper-ation.In the case of printing in full color, four layers of toner (four colors) are deposited onthe intermediate transfer drum ready for primary transfer, requiring strengthening tonertransfer for the second and subsequent colors, as toner with negative potential willincrease on the intermediate transfer drum. To this end, the DC bias (positive) isincreased for the second and the subsequent colors when printing in full color.CHAPTER 1 GENERAL DESCRIPTION1-27TonerPhotosensitivedrumConducting layerAluminum layerIntermediate transfer drumDC biasFigure 1-808Download free service manual at http://printer1.blogspot.com
