Abstract: Images are formed in the S-D and D-D modes and sheets of recording paper after image formation are arranged in accordance with the order of pages. A document of an odd-numbered page placed on a paper feeding tray in a document transport part is fed to an image reading part and an image is read and stored into a RAM. Subsequently, a document of an even-numbered page is fed and an image is read. A sheet of recording paper housed in a paper feeding cassette is transported to an image forming part and the image is formed on one of the surfaces of the sheet of recording paper. Further, the sheet of recording paper is transported to a path, turned upside down, and transported again to the image forming part. The image stored in the RAM is read out and formed on the other surface of the sheet of recording paper. Finally, the sheet of recording paper is transported with the other surface facing downward and ejected to an output tray.

Abstract: Images are formed in the S-D and D-D modes and sheets of recording paper after image formation are arranged in accordance with the order of pages. A document of an odd-numbered page placed on a paper feeding tray in a document transport part is fed to an image reading part and an image is read and stored into a RAM. Subsequently, a document of an even-numbered page is fed and an image is read. A sheet of recording paper housed in a paper feeding cassette is transported to an image forming part and the image is formed on one of the surfaces of the sheet of recording paper. Further, the sheet of recording paper is transported to a path, turned upside down, and transported again to the image forming part. The image stored in the RAM is read out and formed on the other surface of the sheet of recording paper. Finally, the sheet of recording paper is transported with the other surface facing downward and ejected to an output tray.