Patent ID: 6231161
Filing Date: 2001-05-15
Classification: G06K

Abstract:
A dot recording apparatus for recording dots on a surface of a printing medium, the dot recording apparatus comprising:a dot print head having a plurality of dot-forming elements for forming dots of an identical color on a plurality of main scanning lines during one pass of main scan on the surface of the printing medium;a main scan driving section that drives at least one of the dot print head and the printing medium to carry out the main scan;a head driving section that drives at least part of the plurality of dot-forming elements in the course of the main scan to form dots;a sub-scan driving section that drives at least one of the dot print head and the printing medium to carry out sub-scan; anda controller that controls the respective sections;wherein the controller sets dot recording positions on each pass of main scan so that the dot recording positions for the identical color appear once every s dots in a main scanning direction on each raster line where s is an integer of at least 5; andthe controller sets a sub-scan feed amount after each pass and the dot recording positions on each pass of the main scan so that the dot recording positions on any two consecutive passes are separated from each other.