Patent ID: 7497537

Claim:
A printing apparatus which prints plural dots on a printing medium by a printing head to form a predetermined image, comprising: an image data acquirement unit which acquires image data corresponding to the predetermined image; a data conversion unit which converts the image data acquired by the image data acquirement unit, for each pixel of the image data, into printing data relating to at least either of a presence and an absence of a dot; a printing head grasp unit which grasps characteristic information of the printing head; and a printing unit which executes printing based on the data obtained by the data conversion unit, wherein: when an occurrence of a banding phenomenon is forecasted based on the characteristic information of the printing head grasped by the printing head grasp unit, the data conversion unit converts the image data so that a size of a part or all dots associated with the banding phenomenon is changed to a size different from the size of a dot when the occurrence of the banding phenomenon is not forecasted; when the occurrence of the banding phenomenon is forecasted based on the characteristic information of the printing head grasped by the printing head grasp unit, the data conversion unit converts the image data so that the size of part or all dots associated with the banding phenomenon is larger than the size of a dot when the occurrence of the banding phenomenon is not forecasted; and the data conversion unit converts the image data so that large converted dots do not continue adjacently in a part of dots associated with the banding phenomenon.