Patent ID: 7224480

Claim:
A system having an imaging apparatus which outputs a sensed image and a printing apparatus connected to the imaging apparatus via an interface, the imaging apparatus comprising: issuing means for issuing a print request command containing a parameter for designating a print mode to the printing apparatus connected to the imaging apparatus via the interface; transmission means for transmitting image data corresponding to the print mode; and means for transmitting, to the printing apparatus, the print request command in which the parameter for designating the print mode is changed to invalid data to instruct printing of the image data transmitted by the transmission means, and the printing apparatus comprising: data request means for transmitting a data request to the imaging apparatus in accordance with the print request command; reception means for receiving the image data transmitted from the imaging apparatus in accordance with the data request from said data request means; and print control means for printing the image data in accordance with reception of the image data by said reception means and the print mode, and so controlling the printing apparatus so as to print unprinted image data in response to receiving the print request command in which the parameter is changed to invalid data.