A method for characterizing a printing device response for a halftone screen includes (a) generating a plurality of test patches, each test patch comprising a dot pattern having less than three different base patterns for the halftone screen; (b) measuring the luminance of selected ones of the test patches;...http://www.google.es/patents/US6775029?utm_source=gb-gplus-sharePatente US6775029 - Method for efficient calibration of printing devices
Method for efficient calibration of printing devices