Patent ID: 7520590

Claim:
An inkjet recording device comprising: droplet ejection heads that respectively eject ink liquids of a plurality of colors and a reaction liquid that causes coloring material of the ink liquid to coagulate, for recording dots at a recording medium; a preparation section that prepares dot data representing ejection amounts of the ink liquids of the plurality of colors and the reaction liquid for each dot, on the basis of gradation values of each pixel of an image represented by image data, the preparation section preparing the dot data such that ejection amounts of the ink liquids of colors among the plurality of colors, each of the ink liquids of the colors being high in visibility, are respectively represented by data with a predetermined number of bits, ejection amounts of the reaction liquid and the ink liquid of the rest of the plurality of colors are respectively represented by data with a number of bits which is smaller than the predetermined number of bits, and a number of bits of the dot data for one dot is an integer multiple of eight bits, the number of bits of the dot data for one dot being a sum of: (i) a sum of the predetermined number of bits representing the ejection amounts of the ink liquids of colors among the plurality of colors being high in visibility, and (ii) a sum of the number of bits which are smaller than the predetermined number of bits representing the ejection amounts of the reaction and the ink liquid of the rest of the plurality of colors; and a control section that controls ejection of the ink liquids of the plurality of colors and the reaction liquid from the droplet ejection heads in accordance with the dot data prepared by the preparation section.