Patent ID: 8447217
Filing Date: 2013-05-21
Classification: G03G

Abstract:
1. An image forming apparatus having a double-sided print function, comprising: an image forming unit for forming a toner image on an image carrier based on image data; a transfer unit for bringing the toner image on the image carrier into contact with a paper sheet, and applying transfer voltage so as to transfer the toner image onto the paper sheet; and a fixing unit for fixing the toner image transferred onto the paper sheet, wherein after a first toner image is transferred and fixed onto a first side of the paper sheet, a second toner image is transferred and fixed onto a second side of the paper sheet, the image forming apparatus further comprising: a detection unit to detect overlap of the toner images on the first side and the second side of the paper sheet based on image data with respect to each image area having a predetermined width in a sub-scanning direction; and a transfer output adjustment unit which changes a transfer voltage output for the second side in the image area with the overlap of the toner images detected with respect to each image area in one paper sheet in accordance with a toner adhering amount of the first side in the image area with the overlap of the toner images detected.