Patent ID: 8517493

Claim:
An ink jet printing apparatus comprising: a print head having a nozzle opening for ejecting ink; a heating unit that heats the print head; a first control unit configured to control a preliminary ejection operation of the print head to eject ink not contributing to printing an image on a print medium; and a second control unit configured to control an ink ejecting operation of the print head to print the image on the print medium, wherein the second control unit performs the ink ejection operation after the preliminary ejection operation performed by the first control unit, wherein the first control unit performs a first operation and a second operation as the preliminary ejection operation, the first operation being performed, after the print head is heated to a first temperature by the heating unit, to eject ink not contributing to printing the image, and the second operation being performed, after waiting until the print head cools down to a second temperature lower than the first temperature, to eject ink not contributing to printing the image, wherein an ink ejection frequency during the first operation is higher than an ink ejection frequency used for printing the image, and wherein an ink ejection frequency during the second operation is lower than or equal to an ink ejection frequency used for printing the image.