Abstract: A new testing means and process for determining typographic parameters were developed. The present invention pertains to a pattern of recorded dots, so-called dots, which is reduced such that it is nearly invisible to the observer. This test target is microscopically enlarged and preferably recorded by means of a CCD camera. The signal-to-noise ratio of the measurement is advantageously increased by averaging over a plurality of consecutive printed patterns. Using highly developed image analysis, it is possible to determine the typographic parameters directly from the miniaturized patterns. The measures taken to reduce the test target are described. The application to the type of a process control, which is based essentially on the geometric features of a certain dot pattern, is then schematically outlined as an example.

Abstract: A measuring field group for detecting quality data in the multicolor printing of single editions has measuring fields printed on a printed product in an optically scannable manner with at least one color-measuring surface (F) for determining a color density, a surface coverage or a tristimulus value for each of the measuring fields. To obtain register mark as well as shifting and doubling values simultaneously, the measuring fields have at least one lateral color strip (S) each, which is printed in the same print together with the color-measuring surface (F) of its measuring field, is narrow in relation to the dimensions of the color-measuring surface (F) of its measuring field, and extends at a likewise short lateral distance from the color-measuring surface (F) in relation to the dimensions of this color-measuring surface (F).

Abstract: A measuring field block for detecting quality data in the multicolor printing of single editions, which measuring fields (A1-D3) printed on a printed product in an optically scannable manner with at least one color-measuring surface (F) for determining a color density, a surface coverage or a tristimulus value for each of the measuring fields (A1-D3), is characterized in that the measuring field block has lines (L) for primary colors used in the print for the simultaneous determination of values for a register deviation.