In order to shorten the waiting time and to prevent confidential data from being seen by others, an MFP has a distance measuring portion to communicate with a radio communication terminal and measure a distance between the MFP and the radio communication terminal, a print-job acquiring portion to acquire print data, an image-forming portion to form an image, and an image forming control portion to start a preparation operation to cause the image-forming portion to form an image, upon reduction of the measured distance equal to or below a first threshold value, and to cause the image-forming portion to form an image based on the acquired print data, upon reduction of the measured distance equal to or below a second threshold value smaller than the first threshold value.