HP 8000dn Service Manual - Page 139

Image Transferring and Media Separation During the image transferring process, the toner image on the drum surface is transferred to the media. A positive charge applied to the back of the media by the transfer roller causes the negatively charged toner particles on the drum surface to be attracted to the media. The small diameter of the drum, combined with the stiffness of the media, causes the media to separate easily from the drum. The static eliminator teeth also help separate the paper from the drum. The static eliminator teeth weaken the attractive forces between the negatively charged drum surface and the positively charged paper. This action keeps thin media from wrapping around the drum. After separation, the drum is cleaned and conditioned for the next image. Figure 5-12 Image Transferring and Media Separation EN Image Formation System 115