Patent ID: 8764152

Claim:
An image processing apparatus to process input image data for a pixel area to print on the associated pixel area of a print medium by a plurality of relative movements between a printing unit and the print medium, the printing unit being adapted to print dots by using a first ink and a second ink with different levels of brightness, the image processing apparatus comprising: an obtaining unit configured to obtain a first multivalue data based on the input image data corresponding to the first ink and a second multivalue data based on the input image data corresponding to the second ink; a conversion unit configured to convert each of the first multivalue data and the second multivalue data into a plurality of multivalue data corresponding to the plurality of relative movements; and a quantization unit configured to quantize each of the plurality of pieces of multivalue data corresponding to the first ink and the second ink, wherein at least one of the conversion unit and the quantization unit performs converting or quantizing such that a percentage of the number of dots to be overlappingly printed at the same positions in the pixel area by the plurality of relative movements, with respect to a total number of dots to be printed in the pixel area by the plurality of relative movements, is differentiated between at the first ink and the second ink.