Patent ID: 6665091
Filing Date: 2003-12-16
Classification: B41J

Abstract:
A printing apparatus that carries out a main scan, which moves a head forward and backward relative to a printing medium, and creates a plurality of dots on said printing medium according to input image data, thereby printing an image, said printing apparatus comprising:said head that enables creation of at least two different types of dots having different densities per unit area; a storage unit that stores a predetermined relationship between the at least two different types of dots and raster-forming directions of the main scan, wherein the raster-forming directions include a forward direction and a backward direction of the main scan that respectively correspond to the forward movement and the backward movement of said head, the predetermined relationship causing each of the raster-forming directions of the main scan to be mapped to at least one type of dot, wherein there is at least one type of dot created only in either one of the forward direction and the backward direction of the main scan; a first creation unit that drives said head in the forward direction to create the type of dot mapped to the forward direction of the main scan, based on the predetermined relationship; and a second creation unit that drives said head in the backward direction to create the type of dot mapped to the backward direction of the main scan, based on the predetermined relationship.