Image forming apparatus

An image forming apparatus, comprising:

• an image forming apparatus main body,
• an image forming part provided in the image forming apparatus main body and forms an image,
• a transfer device transferring the image formed by the image forming part on a recording medium,
• a fixing device fixing the image transferred with the transfer device on the recording medium with at least heat, and
• a transport unit transporting the recording medium from the fixing device to the transfer device so as to transfer further an image on the recording medium having the fixed image,
• wherein the transport unit forwards the recording medium to the fixing device to fix the later transferred image, then transports the medium toward outside of the image forming apparatus main body, and retrieves again the recording medium into the image forming apparatus main body.