To provide an image processing apparatus capable of associating print data with channels with a simple configuration and transferring the print data to an appropriate print head, an image processing apparatus stores print data corresponding to each ink in a data buffer in association with ink information indicating each ink. The image processing apparatus includes a table retention unit which stores an address of a channel buffer associated with each of a plurality of print heads in association with the ink information, and transfers each print data to an address associated with the ink information. The image processing apparatus can rewrite an association between the addresses and the ink information stored in the table retention unit.