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procedure and apparatus for the regulation of farvetilfoerselen by an offset printing press and apparatus equipped with a corresponding offset printing press
procedure and apparatus for the regulation of farvetilfoerselen by an offset printing press and apparatus equipped with a corresponding offset printing press
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机译:胶版印刷机调节法维托氟醚的程序和设备以及配备有相应胶版印刷机的设备
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摘要
Printed products and their respective corresponding printing plates are divided into a plurality of image elements. For each image element the surface coverage is determined by photoelectric measurements; a reference reflectance value is then calculated from these measurements, taking into consideration such parameters as the printing characteristic. These reference reflectance values are compared with the actual reflectance values measured on the printed products and the results of the comparison are evaluated to from a quality measure and to calculate control values for the ink feed devices of the printing machine. In this manner, the use of special color measuring strips may be eliminated.
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