Patent ID: 8588637
Filing Date: 2013-11-19
Classification: G03G

Abstract:
1. An image forming apparatus comprising; an image carrier carrying a toner image; a transfer belt making pressure contact with the image carrier through a sheet of paper and transferring the toner image onto the sheet of paper; a plurality of supporting rollers stretching and supporting the transfer belt; and a transfer roller, to which transfer electrical current is applied, making the transfer belt to make pressure contact with the image carrier from a back surface of the transfer belt, wherein one roller of the supporting rollers being arranged at downstream of the transfer roller and at a position where the sheet of paper is separated from the transfer belt is formed in an inverted crown shape, wherein a size of the center portion of the supporting roller is smaller than a size of the end portion of the supporting roller, and wherein the transfer belt is rotationally driven for a prescribed time, while the transfer electrical current is not applied on to the transfer belt, in both or either of before and after transfer of the toner image.