Method for printing quality analysis in an inkjet printing machine (4) by means of a computer (3, 6), test patterns (11) being printed during a printing process, measured by means of an image acquisition system (2) and evaluated by the computer (3, 6) and results the evaluation for controlling the inkjet printing machine (4) can be used, printing and evaluation of the test pattern (11) requiring a synchronous process, which is characterized in that codes (9, 13) are integrated into the test pattern (11) by means of local gray value adjustment which are captured by the image acquisition system (2) and evaluated accordingly by the computer (3, 6) for carrying out the print quality analysis.
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