bilduebertragungsvorrichtung, in particular for electric transfer xerographischer tonerbilder a xerographischen drum on a kopierblatt

摘要

A shield for preventing premature transfer of xerographic toner images from a photoconductive plate to a sheet of final support material, both of which are being moved at synchronous speeds through a transfer zone beneath a corona generating device. The shield, which is made up of a grounded plate having a thin dielectric coating thereover, is positioned within the generator ion stream to prevent the charged ions from reaching the support material prior to its being placed in contact with the photoconductive plate. This device is particularly well suited to prevent premature transfer of toner images in a machine environment wherein a xerographic drum having a relatively small diameter is utilized.