Recording device for recording recording image by nozzle set reciprocating relative to recording medium, image processing device for generating recording data for recording recording image by nozzle set reciprocating relative to recording medium and recording method for recording recording image by nozzle set reciprocating relative to recording medium

A recording device configured to record a recording image based on image data by repeating a pass operation in which a nozzle set discharges a liquid while reciprocating relatively to a recording medium in a main scanning direction to form dots on the recording medium, and a conveying operation of relatively moving the nozzle set and the recording medium in a sub-scanning direction crossing the main scanning direction, the recording device comprising:

• a digital processor configured to obtain a plurality of different sets of halftone data which is generated with respect to a same area of the image data based on the image data, and which corresponds to the liquid of a predetermined color, and then assign the different sets of the halftone data obtained to the pass operations in a same direction in reciprocation in the main scanning direction in a predetermined recording area;
• and
• a second nozzle set configured to discharge a liquid of a second color different from the predetermined color, wherein
• the digital processor obtains a second halftone datum which is generated with respect to a same area of the image data based on the image data, and which corresponds to the liquid of the second color, and then assign the second halftone datum to the pass operations in one of a same direction, and an outward path direction and a return path direction in the reciprocation in the main scanning direction of the second nozzle set, and
• the digital processor assigns the second halftone datum to the pass operations in a same direction in the reciprocation in the main scanning direction of the second nozzle set in the predetermined recording area when an intensity of a contrast between a color of the recording medium and the second color is higher than an intensity of a contrast between the color of the recording medium and the predetermined color.