Image correction system and image correction method

An image processing apparatus for printing an image on a printing medium with a printhead which is able to discharge a plurality of inks having different colors, the apparatus comprising:

• a controlling unit configured to cause the printhead to print patches on the printing medium in a predetermined printing mode, wherein the predetermined printing mode uses a first combination of inks, and wherein the first combination of inks includes a part of the plurality of inks and does not include an ink other than the part of the plurality of inks;
• an acquiring unit configured to acquire density correction information of each ink of the first combination of inks based on measurement results of the patches;
• and
• a storing unit configured to store the density correction information of each of the plurality of inks in a memory, wherein the storing unit stores the density correction information acquired by said acquiring unit as latest density correction information of each of the first combination of inks,
• wherein at least a part of the density correction information acquired by the acquiring unit is used for correcting image data to be printed in a printing mode using a second combination of inks different from the first combination of inks.