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FLEXO Magazine : August 2011
www.flexography.org august 2011 FLEXO 35 solutions for narrow web printers Integrated, user-friendly systems tailored for your application. Leave it to Anderson & Vreeland to bring together state-of-the-art equipment, materials, software and support for narrow web prepress. We’ve assembled the finest plate processing equipment in the industry, complemented by printing plate materials from industry leaders that include Flint Group and Toyobo. Put our 50 years of flexo experience to work for you. theDiff erence! ExperienceAVflex8000SystemESKO1712ImagerOKIpro510DWPlateMaterial/SolutionsEpsonStylus®Pro4900OrbitalXSystem 866.282.7697 | Fax 800.223.6869 | www.AndVre.com | info@AndVre.com AV 9623 Narrow Web ad_flexo.indd 1 7/1/11 9:00:12 AM As an example, Creasey cites the work done by prepress supplier FX Col- ors, which has developed quadri and hexachrome processes for recycled brown paper, specifically for use on presses. “ T his is a really new applica- tion that delivers bright, high quality color on recycled board. It opens up new marketing approaches for brand owners and new products for convert- ers. Similarly, a new era of develop- ment has also started, due to work with Henkel inks, which developed a metallic ink structure, giving a shiny and brilliant aspect to the printed board.” In order to combine these new developments within a coherent and reliable process, sophisticated control technologies and ultra-precise print register adjustments are integrated into HQ presses, notes Creasey. “ The control of the sheet and the position where each color is laid down is now so accurate that users can take advantage of the detail that developments, such as very fine anilox rolls and plates can deliver. ” Key to these advances has been the development of a system which senses printed marks on the sheet and uses this information to bring each print unit into register on start-up--and then keep it there throughout production without the need for operator intervention. Called “ Start & Go,” this system automatically adjusts print length, skew, and both transverse and longitudinal register. This means that jobs can be set up using just a few sheets and once set will remain in register for the entire length of the run. A direct drive feeder ensures that sheets are not crushed or marked on feeding, and also allows for the correction of the position of the front edge to ensure that the first color, and all subsequent ones, are printed in the right locations relative to the sheet edges. Starting the job with each print unit in perfect register, and staying there at all speeds, is absolutely vital when printing high graphics, says Creasey. “ Something like the ‘Start & Go’ system can be the operator’s best friend during the start-up of the job, because it sets the registration and skews print elongation automatically if needed, all with only a few sheets. Photocells at the inlet of each print unit keep the registration perfect. ” Handling a maximum sheet size of 82 5/8-in. x 51 3/16-in., one HQ press can be configured with up to eight print units and can print onto substrates ranging from micro-flute to double-wall. To ensure its quality of output, and in particular to spot defects in the board, the press comes with a quality control system, (in the case of Bobst’s Master- flex-HD, the recently launched iQ300) integrated into it. This system checks every sheet printed by the press and ejects any which do not meet user-set criteria, which can include print defects, defects in the board surface, and varia- tions in washboarding, among others. HIGHLY PRODUCTIVE Creasey says that the focus during the development of HQ machines was on delivering a completely new level of flexo print quality, but also insists that productivity was never far from the minds of design teams. “Our line has an