A METHOD AND APPARATUS FOR DIGITAL PRINTING WITH PRESERVATION OF THE ALIGNMENT OF PRINTED DOTS UNDER VARIOUS PRINTING CONDITIONS

摘要

The invention provides a method and apparatus for printing dots on a printing medium. The method includes the steps of printing a calibration test pattern, scanning the printed calibration test pattern, determining a spatial fire correction value for a number of print positions across the printing medium, based on the scanned calibration test pattern, and adjusting the fire position for each of these print positions. The method and apparatus may be used to preserve the alignment of the printed dots under various operating conditions of the printing process such as bidirectional printing, throw distance variations, multiple print head scan speeds, etc.