Image forming apparatus in which the order of printing in duplex-printing is controlled in accordance with memory storage capacity

摘要

An image forming apparatus in accordance with the present invention forms images on the opposing planes of a sheet of paper based on image data sequentially transmitted on page-by-page basis, and includes a memory for storing image data on page-by-page basis, an image forming device for forming an image on a sheet of paper based on image data read out from the memory, a face up tray attachable and detachable to and from the body of the apparatus and capable of receiving a sheet of paper with its plane on which an image is formed last facing upward, and a controller changing the order of reading image data from the memory based on the storage capacity of the memory and whether or not the face up tray is mounted to the apparatus.