INKJET PRINTING SYSTEM AND INKJET PRINTING CONTROL METHOD

PROBLEM TO BE SOLVED: To precisely correct a landing deviation of ink droplets ejected from a plurality of printing heads. SOLUTION: The inkjet printing system includes a test chart printing control means which prints a test chart by correcting a landing deviation correction value at a reference temperature (reference correction value 531a) by a function of a printing environmental temperature and making ink droplets ejected from a plurality of printing heads with a corrected timing, an actual measurement correction value acquiring means which acquires actual measurement correction values 531b and 531c based on the measured result of the landing deviation of ink droplets in the printed test chart, an updating means which updates setting of a correction function according to the reference temperature, reference correction value, acquired printing environmental temperature and acquired actual measurement correction values, and a printing control means which prints an arbitrary image by making ink droplets ejected from a plurality of printing heads with a relatively corrected timing by a value of the correction function corresponding to the acquired printing environmental temperature. COPYRIGHT: (C)2011,JPO&INPIT