Patent ID: 7703872

Claim:
An ink jet printing apparatus for forming an image on a print medium by using a print head, wherein the print head includes an array of a plurality of print elements each adapted to eject ink by applying a pulse to a heater, the ink jet printing apparatus comprising: selection means for selecting one of a plurality of print modes; acquire means for acquiring an ink temperature in the print head; setting means for setting the pulse to be applied to the heater according to information about the print mode selected by the selection means and about the ink temperature acquired by the acquire means; and driving means for driving one of the print elements by applying the set pulse to the heater; wherein the plurality of print modes includes at least a high quality mode that gives priority to an image quality and a high speed mode that gives priority to a printing speed, and wherein, in a predetermined temperature range, the pulse set by the setting means when the high speed mode is selected has a higher voltage value and a shorter pulse width than those of a pulse set when the high quality mode is selected.