Patent ID: 8240802

Claim:
A printing apparatus comprising: a mounting unit configured to mount a printing head in which a plurality of ejection outlets ejecting an ink are arranged, the printing head storing a first parameter related to a printing position deviation inherent to the printing head; a printing unit configured to print dots on a printing medium by ejecting the ink from the printing head; a detecting unit configured to detect the printing position deviation with the printing head mounted on the printing apparatus; a first storage unit configured to store a second parameter related to the printing position deviation with the printing head mounted on the printing apparatus; a correction unit configured to correct positions at which the printing head prints dots on the printing medium according to the second parameter; a derivation unit configured to derive a third parameter related to the printing position deviation inherent to the printing apparatus from the first parameter and the second parameter; a second storage unit configured to store the third parameter; and updating unit configured to update the second parameter, when a new printing head is mounted on the printing apparatus, from the third parameter and the first parameter of the new printing head.