During the calibration process, a page containing a test pattern is output on the printer. The ink is allowed to dry for a short time, and then the page is fed back into the printer and analyzed. For this analysis, the printer has been fitted with a densitometer which measures the color density. The resulting linearization curve is then used for uniform screening.
Note: This curve is only used for density correction and not for color correction. For color correction, suitable profiles must be calculated using spectrophotometers and the appropriate programs.
This calibration is added to the system as a separate job, in other words, when the calibration process is started for the paper type selected, the job currently being printed is completed but the next job in the queue is paused until calibration is finished. This can take between approximately 5 and 7 minutes due to the ink drying. The waiting job is then processed without any user inputs.
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