Recording device and recording method

A recording device, comprising:

• a recording head including a first nozzle row, in which first nozzles configured to discharge a first ink representing black by a single color or a mixed color, are arranged, and a second nozzle row, in which second nozzles configured to discharge a second ink having a lower pigment concentration than a black ink and being an achromatic color, are arranged, the first nozzle row and the second nozzle row being arranged in a first direction;
• a carriage on which the recording head is mounted, and the carriage being configured to move in the first direction;
• a transport unit configured to transport a recording medium, that receives ink discharged from the recording head, in a second direction that intersects with the first direction;
• and
• a control unit configured to control the recording head, the carriage, and the transport unit, wherein
• when, of a first mode that is a recording mode for increasing concentration of black and a second mode that is a different recording mode from the first mode, the first mode is selected, the control unit performs recording on the recording medium with a nozzle unused region, in which the first nozzle does not discharge the first ink and the second nozzle does not discharge the second ink, set between, in the second direction, a first nozzle used region of the first nozzle row for discharging the first ink onto the recording medium, and a second nozzle used region of the second nozzle row for discharging the second ink onto a region of the recording medium with the first ink discharged thereon.