| 摘要 |
A method for calibrating a thermal printer, having a thermal head incorporating a plurality of energisable heating elements, comprises the step of supplying to the thermal printer a thermographic material m, a plurality of printer data Pi each intended to be recorded as a pixel having a density Di, and default reference values for printing parameters comprising a value Pref for a reference printing power; and the step of printing a calibration pattern for the plurality of printer data Pi, the calibration pattern comprising a multiple step density wedge such that a whole range of a relation Di(Pi) between the printer data Pi and the density Di is covered. Further steps comprise measuring a density Dexpi for each patch of the density wedge of the calibration pattern in relation to the plurality of printer data Pi and storing a first set S1=(Pref, Pi, Dexpi) in a first memory M1; calculating, for a desired density Dwantj, a corresponding value Prefnewj for the reference printing power and storing a second set S2=(Dwantj, Prefnewj) in a second memory M2; calculating, for the desired density Dwantj, for each printer data Pi a corresponding density Di and storing a third set S3 =(Dwantj, Prefnewj, Pi, Di) in a third memory M3.
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