Patent ID: 8128200
Filing Date: 2012-03-06
Classification: B41J

Abstract:
1. A fluid ejecting apparatus, comprising: a head unit which includes a first head in which a plurality of first nozzle rows in each of which a nozzle for ejecting a fluid of a first color onto a medium and a nozzle for ejecting a fluid of a second color onto a medium are lined up in a color order in which the first color is earlier than the second color in a predetermined direction and the nozzles are lined up in a cross direction crossing the predetermined direction, and a second head which is disposed at a downstream side of the first head in the predetermined direction and in which a plurality of second nozzle rows in each where the two nozzles are lined up in a color order identical to the color order in the predetermined direction and are lined up in the cross direction, wherein the first nozzle row, which is positioned on an end part of one end side of the first head in the cross direction, overlaps the second nozzle row, which is positioned on an end part of the other end side of the second head in the cross direction, in the cross direction, so that a composite nozzle row in which the first nozzle row and the second nozzle row are lined up in the predetermined direction is formed; a movement mechanism which moves the medium relative to the head unit in the predetermined direction; and a controller which controls a nozzle to eject a fluid onto the medium, which is moved by the movement mechanism, from nozzles of the first nozzle row and the second nozzle row which belong to the composite nozzle row for each color and disposes a plurality of color-overlapped dots in the predetermined direction to form a raster line, wherein the controller controls a nozzle to eject a fluid such that a first ratio of A1 to “A1+A2” is larger than a second ratio of B1 to “B1+B2” to form the raster line, where A1 denotes an amount of a fluid of the first color on the raster line ejected from the first nozzle row, A2 denotes an amount of a fluid of the first color on the raster line ejected from the second nozzle row, B1 denotes an amount of a fluid of the second color on the raster line ejected from the first nozzle row, and B2 denotes an amount of a fluid of the second color on the raster line ejected from the second nozzle row.