Patent ID: 7245394

Claim:
A program stored in a computer readable medium for causing a computer, which is connected to and controls a printing apparatus that prints an image by discharging a printing material from a plurality of nozzles, to execute the following steps: an acquisition step of acquiring information relating to arrangement of the nozzles of the printing apparatus; a transmitting step of transmitting print image data, which corresponds to an image printed by the printing apparatus, to the printing apparatus; and a determination step of determining, based upon the information relating to arrangement of the nozzles and the print image data, whether non-discharging nozzles that have failed to discharge the printing material over a predetermined period of time exist when an image is printed by the printing apparatus, wherein in a case where existence of the non-discharging nozzles has been determined at said determination step, said transmitting step transmits preliminary-discharge image data, which is for causing the non-discharging nozzles to discharge the printing material, to the printing apparatus in combination with the print image data.