Compact register mark

Abstract

A register control mark for the detection of positional deviations between at least two color separations printed over one another on a printing material in multicolor printing. The control mark has a pattern with parallel lines of a first color separation and, printed in parallel over the pattern, at least two parallel lines of a second color separation.

Description

technical field [0001] The invention relates to a control marking for detecting positional deviations between at least two superimposed color separations on a printing material during multicolor printing. Background technique [0002] Especially in offset printing, as well as in other types of multicolor printing, the print quality is significantly dependent on the fact that the individual color separations are accurately superimposed. In this case, deviations in the range of approximately 100 μm to a few millimeters are involved. For checking the print quality, it is therefore important to be able to unambiguously detect positional deviations of the individual color separations on the printing material relative to one another, so that these deviations can be corrected or adjusted if necessary by changing settings in the printing press. Here, the control and adjustment processes are performed either manually or automatically. In the case of manual control, register and reg...

AI Technical Summary

Problems solved by technology

The previously known positional requirements for overprint and register marks are in the way, especially if they are present multiple times in the lateral or circumferential direction on the printing material in order to be able to take into account and recognize the expansion of the paper caused by moisture during printing. of

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