A liquid ejection device includes a plurality of deep nozzle lines each
having a plurality of nozzles in a predetermined direction, for ejecting
a first liquid, and a smaller number of light nozzle lines than the
number of the deep nozzle lines, each having a plurality of nozzles in
the predetermined direction, for ejecting a second liquid having a
lighter color depth than the first liquid. A controller forms deep dots
on pixels on a medium using the plurality of deep nozzle lines, and forms
light dots on a smaller number of pixels than the number of the pixels on
which the deep dots are formed using the smaller number of light nozzle
lines.