| 摘要 |
<p>A method for developing calibration curves (e.g., Curve III) and for calibrating an electronic halftone imaging device (Fig. 1) to reproduce on an imaging medium halftone gray scale values representing input gray scale values entered in said imaging device. According to this method, a calibration function representing a linear change in reproduced halftone dot size is developed by using said imaging device to reproduce on an imaging medium, at least two test input dot values representing two different percent halftone dot sizes (e.g., 30 % and 55 %) and determining a linear change between the input and the reproduced halftone dot sizes (e.g., 10 % and 30 %). The dot growth is used to predict dot changes for other percent halftone dots and thus construct calibration curves which are used to calibrate the imaging device.</p> |
