Image forming apparatus and image forming method

摘要

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 (D) of an odd-numbered page placed on a paper feeding tray (13) in a document transport part (2a) is fed to an image reading part (3) and an image is read and stored into a RAM (26). Subsequently, a document (D) of an even-numbered page is fed and an image is read. A sheet of recording paper (P) housed in a paper feeding cassette (53) is transported to an image forming part (4) and the image is formed on one of the surfaces of the sheet of recording paper (P). Further, the sheet of recording paper (P) is transported to a path (8), turned upside down, and transported again to the image forming part (4). The image stored in the RAM (26) is read out and formed on the other surface of the sheet of recording paper (P). Finally, the sheet of recording paper (P) is transported with the other surface facing downward and ejected to an output tray (12). By repeating the operation, the sheets of recording paper (P) can be ejected in accordance with the order of pages.