Problems with the Automatic Control of the Colour Register in Newspaper Printing

The control of four-color register in newspaper printing has specific characteristics in comparison with heatset printing. These are related to broad paper web, high printing speed, long web leads, low print contrast, low web tension, etc. It is also difficult to position the conventional register targets in the marginals of the pages. The problems and the means of solving the automatic control of color register in newspaper presses have been discussed in the paper. Also, some experimental results on the production presses are reported. in the paper. Also, some experimental results on the production presses are reported.