Patent ID: 6760564
Filing Date: 2004-07-06
Classification: G03G

Abstract:
A picture image forming apparatus comprising a photoreceptor belt driven by a drive device, a plurality of developing means for forming toner picture images on the photoreceptor belt, intermediate transfer means, 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 means in order to transfer toner picture images to the sheet, and wherein the intermediate transfer means 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, and wherein a diameter d2 of the transfer-side roller is smaller than a diameter d1 of the photoreceptor-side roller.