Antonelli, Terry, Stout & Kraus
Electrophotographic recording apparatus
 In an electrophotographic recording apparatus, toner images of different colors formed on a photosensitive belt are transferred in overlapping fashion to an intermediate transfer drum to form a color toner image and the color toner image is transferred to a secondary recording medium by means of a transfer unit and then fixed. The intermediate transfer drum includes an electrically conductive drum substrate and a dielectric layer whose resistance is adjusted to a predetermined range, and the drum substrate is connected to earth potential so that setting of an electric field for toner image transfer from the photosensitive belt may not interfere with setting of an electric field for toner image transfer by the transfer unit. Efficiencies of transfer at the two transfer sections can be improved to provide a color image of high quality and the apparatus can be reduced in size. 
Hitachi, Ltd.
G G
G03G G03G
inventional inventional
Tomoji Akira Masahiko Kazuhiro Isamu
Kitagishi Shimada Saito Wakamatsu Terashima