Measurement of a rotogravure printing machine Within a new print job increasing maculature occurred. Thus the printing plant suffered from higher material costs and decreasing machine availability. The production manager assumed insufficient roll alignment to be the reason. In the picture to the right the compact construction of a printing unit is shown; in total this printing machine counts eight of such units. By tapping with dial gauges rolls close to each other can be measured easily, but the parallelism measurement between the cooling cylinder in the upper part of the machine and the printing cylinder in the lower part is hardly possible. Thus the production management decided to order a PARALIGN® service for roll alignment. With PARALIGN® all rolls can be measured without any loss of accuracy, also the ones hardly accessible with traditional systems. During a regular maintenance downtime all 120 rolls of the machine were measured. According to the instantly available results offsets were corrected by an installation company. In close collaboration with PRÜFTECHNIK experts the corrections were verified and documented. After the alignment the customer reported smooth product changes, less maculature and improved printing quality. The next page shows parts of the PARALIGN® protocols before and after the alignment. Advantages of PARALIGN® in the rotogravure printing machine Cost savings: less spoilage less waste Are the solvent pumps failsafe? OPTALIGN® smart Laser shaft alignment with the better partner Contact us for further information Higher machine availability reduction in web breaks start-up time unaffected by change in product less downtime Increased quality decrease in folds correct passers and gauge pins

After alignment► Before alignment Roll face length: 1800 mm Your point of view is the operator side of the machine represented in green. The machine side is represented in red. The blue marked printing cylinder is chosen as reference roll, it is perpendicular to the drawing For further information please see www.paralign.info PRÜFTECHNIK Alignment Systems GmbH Freisinger Str. 34 85737 Ismaning Germany Tel +49 89 99616-0 Fax +49 89 99616-100 [email protected] www.pruftechnik.com A member of the PRÜFTECHNIK Group OPTALIGN® smart and PARALIGN® are registered trademarks of PRÜFTECHNIK Dieter Busch...