Patent ID: 8191983
Filing Date: 2012-06-05
Classification: B41J

Abstract:
1. A method of calculating a correction value in a liquid ejecting apparatus in which a plurality of heads is arranged in a predetermined direction and each of the heads has a nozzle row in which nozzles ejecting a liquid on a medium are arranged in the predetermined direction, the method comprising: forming a first pattern by a first operation of ejecting the liquid from the plurality of heads while relatively moving the plurality of heads and the medium from one side of an intersecting direction intersecting the predetermined direction to the other side of the intersecting direction; forming a second pattern by a second operation of ejecting the liquid from the plurality of heads while relatively moving the plurality of heads and the medium to the other side of the intersecting direction to the one side of the intersecting direction; calculating, on the basis of the first pattern, a first correction value to line up a landed position of the liquid ejected in the first operation from an end nozzle of a certain head among the plurality of heads on one side of the predetermined direction and a landed position of the liquid ejected in the first operation from an end nozzle of another head on the other side of the predetermined direction, the another head being arranged on the one side of the predetermined direction along with the certain head; and calculating, on the basis of the first and second patterns, a second correction value to line up a landed position of the liquid ejected in the first operation from a middle nozzle of the certain head and a landed position of the liquid ejected from a middle nozzle of the another head ejecting the liquid in the second operation to the landed position of the liquid ejected from the certain head in the first operation.