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FLEXO Magazine : January 2012
tops. In a printer’s world this could mean a lower roughness of the anilox surface, longer blade life, and reduced scoring. Harper globally has also extended its XLTTM technology with nine new state-of-the-art versatile ALE Hercules laser en- graving systems, five of which are 500 watt models. There are also plans to add another four lasers in the next 18 months. Harper’s 500 watt fiber optic engraver contains the latest laser technology available. As C02 laser technology became obsolete in the anilox world, the new fiber optic technol- ogy became our standard. Low line screen engravings with extended or extreme volumes were at minimal a challenge when using CO2 technology. However, with the 500 watt fiber optic technology we are not only able to achieve standard low line screens but have been able to expand our engraving charts beyond what was previously possible. Harper is able to now achieve a broader range of engravings with our XLTTM, XVRTM, and LaserKote product lines. We offer more extensive engraving ranges than any other anilox manufacturer. Harper’s laser technology goes much deeper than just the wattage of the lasers. The cell profiles are much more defined, and tops of cell walls are much more crisp and smooth. Harper has pioneered and still strongly supports the 60 degree hex as the premier engraving geometry being offered to the industry. It is not possible to make consistent engravings if you are unable to consistently measure the line screen and volumes. Harper was the first anilox company to embrace and use Interferometry, which the FFTA Flexo Quality Consortium (FQC) committee has listed as the most repeatable method to measure anilox volume at the 2011 Forum. Harper exclusively uses 3DQC’s from MicroDynamics. Every anilox we engrave is set up in the laser using 3DQC measurement verification prior to engraving and then checked across the anilox surface after engraving. Harper has also developed and incorporated an internal proprietary software package to work with the 3DQC. This proprietary tool allows us to maintain a consistently smooth surface after engraving, which will help rolls perform with less wear, scoring, and provide extended performance. n About the Author: Lee Kluttz, is vice president of operations at Harper Corporation of America. He is responsible for the daily operations of Harper Corporation in Green Bay, WI, and Charlotte, NC. Kluttz is the grandson of company founders, Ron and Katherine Harper. Kluttz is also the son of Harper President Margie Kluttz. He has worked in the business for 20 years, serving as an important part of the professional team. www.flexography.org january 2012 FLEXO 51