Patent ID: 8605330
Filing Date: 2013-12-10
Classification: B41J,H04N

Abstract:
1. An image processing apparatus to process input image data for a pixel area of a print medium so that the input image data can be printed on the associated pixel area by a plurality of relative movements, including a first relative movement and a second relative movement which is different from the first relative movement, between a printing unit and the print medium, the printing unit configured to print first dots and second dots having the same color as the first dots and smaller size than the first dots, the image processing apparatus comprising: a generating unit configured to generate a first multivalue data corresponding to the first dots and a second multivalue data corresponding to the second dots on the basis of the input image data; a dividing unit configured to divide each of the first multivalue data into pieces of first multivalue data corresponding to each of the first and second relative movements based on a first dividing ratio so as to degrade density unevenness caused by density variation on the occurrence of print position deviation between the first relative movement and the second relative movement and divide the second multivalue data into pieces of second multivalue data corresponding to each of the first and second relative movements based on a second dividing ratio which is different from the first dividing ratio so as to degrade graininess of the image to be printed by the second dots; and a quantization unit configured to quantize each of the pieces of first multivalue data and each of the pieces of second multivalue data respectively.