To obtain image outputs which are equivalent to those obtained with local outputs even with regard to images received from an external device, there is provided an image input/output apparatus having an input section for inputting image data of original images, and an output section for outputting image data, and being connected to at least one other image input/output apparatus via a communication medium. A transmission section transmits the image data input by the input section and image accompanying information relating to the input image data to the other image input/output apparatus. A receiving receives image data and image accompanying information relating thereto from the other image input/output apparatus. An output control section carries out control so as to output images using the output section based on the image data and the image accompanying information received by the receiving section.