IMAGE FORMING DEVICE

[Problem] To form the images on the front and rear surfaces of each of a plurality of even small originals onto the front and rear of a sheet of recording paper with the front and rear images mutuallyoverlapped with the positions thereof aligned. [Solution] An image processing unit 54 in an image forming device 10 according to the present invention detects an image on the front surface of an original from a scan region read by an image reading unit 11 on the first scan, detects an image on the rear surface of the original from the scan region read by the image reading unit 11 on the second scan, and moves or rotates the images on the front surface and the rear surface of the original within the entire image over the scan region so that the images on the front surface and the rear surfaceof the copy match and overlap each other on the front and rear surfaces of the recording paper. [技术问题]即使在多个小的文档的情况下，也能够在一张记录纸的正反面上，将正反面的图像位置在对齐的基础上进行重合，从而形成各个文档的正面的图像和背面的图像。[技术手段]在本发明的图像形成装置10中，图像处理部54，从图像读取部11在第一次扫描中读取出的扫描区域中