To provide an image output system for surely preventing the leakage of information related with a confidential object.

This image output system is provided with a digital camera 100 and a printer 300. In the digital camera 100, positioning information when an image is picked up is described in XML data, and the XML data are transferred to the printer 300 by a memory card 109. In the printer 300, when the positioning information analyzed from the XML data corresponds to the positioning information of a confidential object (a step S403; No), a character string showing that "print is not permitted" is displayed at a display part (a step S405), and any print permission signal is not outputted, and this processing is ended.