Patent ID: 7909433

Claim:
A liquid ejecting apparatus comprising: a head unit that has a plurality of heads along a first direction, in which a plurality of nozzles that eject a liquid onto a medium are lined up in the first direction, and that ejects the liquid while moving relative to the medium in a second direction, which intersects the first direction, the head unit having a width in the first direction that is greater than a width of the medium in the first direction, a movement mechanism that makes the head unit move relative to the medium a plurality of times alternately in the second direction and the first direction, and a control section that forms a raster line group by forming each raster line by making two or more different nozzles that are different eject the liquid, respectively while making the movement mechanism move the head unit relative to the medium a plurality of times alternately in the second direction and the first direction, makes the movement mechanism move the head unit relatively so that a total amount of movement of the head unit in the first direction when the head unit has moved relatively the plurality of times is less than an effective nozzle width of one of the heads in the first direction, and forms the raster line group so that a number of the raster lines formed by making the nozzles of only one of the heads eject the liquid is not greater than a number of the raster lines formed by making the nozzles of two or more of the heads eject the liquid.