Patent ID: 8023154

Claim:
An image output system comprising an image processing device that makes image data subjected to a preset series of image processing and an image output device that creates dots according to a result of the preset series of image processing to form an output image on an output medium, said image processing device comprising: a dot number data generation module that divides a number of pixels constituting the image into multiple pixel groups, where each pixel group consists of a preset number of plural pixels, and generates dot number data of each pixel group, which represents number of dots to be created in each pixel group, according to the image data; and a dot number data supply module that supplies the generated dot number data of each pixel group to said image output device, said image output device comprising: an ordinal number acquisition module that obtains ordinal numbers of respective pixels included in each pixel group as a priority order of dot creation in the pixel group; a correlation map storage module that stores a correlation map correlating each combination of an ordinal number and a value of the dot number data to a dot on-off state in a pixel having the ordinal number; a dot on-off state determination module that refers to the correlation map to read a dot on-off state corresponding to the received dot number data of each pixel group and the ordinal number of each pixel included in the pixel group and determines the dot on-off state in the pixel of the pixel group; and a dot creation module that actually creates dots on the output medium according to a determination result of the dot on-off state in the number of pixels.