A scanner includes: an image data input unit to which an image data from a generating source is inputted; a generating source identification unit configured to identify the generating source of the image data inputted to the image data input unit; a selection unit configured to select an image forming apparatus to which the inputted image data is to be outputted from among a plurality of image forming apparatuses serving as output destinations to which the image data is capable of being outputted on the basis of the generating source identified by the generating source identification unit; and a converted data output unit configured to convert the image data inputted to the image data input unit into data having contents suitable for an output condition for an image of the image forming apparatus selected by the selection unit and to output the converted image data to the image forming apparatus selected by the selection unit.