An image forming apparatus includes an image forming unit, a conveyor unit, a printing unit, a data acquiring unit, and a control unit. The image forming unit forms an image based on image data. The conveyor unit conveys a transfer medium onto which the image is to be transferred. The printing unit prints the image onto the transfer medium. The data acquiring unit acquires the image data. The control unit controls the conveyor unit, the printing unit, and the data acquiring unit. The control unit controls the conveyor unit not to feed a transfer medium from a feed tray to the printing unit when a command for printing a second side by double-sided printing is not detected within a predetermined time after detecting a command for printing a first side by double-sided printing.