Patent ID: 7472977
Filing Date: 2009-01-06
Classification: B41J

Abstract:
1. A printing apparatus for executing printing by arranging plural printheads, each including a plurality of print elements in a direction of a print width so as to obtain the print width corresponding to a width of a printing medium and conveying the printing medium in a direction perpendicular to the direction of the print width, wherein printing positions of part of the print elements of a first printhead in the direction of the print width overlap with part of the print elements of a second printhead in the direction of the print width, comprising: conveyance means for conveying the printing medium; mutual complementary printing means for performing mutual complementary printing in the overlap portion by the overlapped print elements; and time divisional driving control means for dividing the plurality of print elements of each of the plural printheads into a plurality of blocks, with each block composed of a predetermined number of print elements, and time-divisionally driving the predetermined number of print elements included in each block, wherein the predetermined number differs from a number of print elements included in the overlap portion, and said time divisional driving control means controls driving sequences of the overlapped print elements of the plural printheads to coincide with each other.