Antonelli, Terry, Stout & Kraus, LLP
Picture image forming apparatus with intermediate transfer belt trained around two rollers of different diameter
A picture image forming apparatus including a photoreceptor belt driven by a drive device, a plurality of developing devices for forming toner picture images on the photoreceptor belt, an intermediate transfer device, to a surface of which toner picture images on the photoreceptor belt are overlappingly transferred plural times when a picture image is to be formed on a single page, and a transfer roller for pushing a sheet against the intermediate transfer device in order to transfer toner picture images to the sheet. The intermediate transfer device is an intermediate transfer belt contacted by the photoreceptor belt to be driven thereby. A photoreceptor-side roller enables contact of the intermediate transfer belt and the photoreceptor belt, and the intermediate transfer belt is trained around the photoreceptor-side roller and a transfer-side roller for pushing the sheet against the transfer roller. A diameter d2 of the transfer-side roller is smaller than a diameter d1 of the photoreceptor-side roller.
Hitachi, Ltd.
G G
G03G G03G
inventional additional
Kazuhiro Akira Masahiko Masashi Masaru Akira Atsushi Kazuo Shunichi Shogo
Wakamatsu Sasaki Saito Yamamoto Nakano Shimada Onose Kikuchi Oohara Matsumoto