“We think our new troubleshooting volume will prove to be a valuable resource for everyone regularly involved in anilox roll technology, whether they are new to the process or already an old anilox hand,” said Alexander James, Technical Graphics Manager at Harper GraphicSolutions™. The Anilox Roller is often referred to as the heart of the flexographic press. Americas: We need to adjust anilox volume to the quantity of ink we want to transfer onto the substrate. Wrong ink temperature. Cyrel® Photopolymer Printing Plate Troubleshooting Guide Problem Identification Press-Related Plate-Related ... High volume anilox roller Low-density negative Excess anilox pressure Over main exposure Excess print pressure Uneven plates Heavy printing, during run Bold type High ink viscosity Plate is worn We therefore recommend that you subject your anilox rollers to laser cleaning at least twice a year, in order to prevent this occurring. While some may not view this as the most dire of issues, it still affects your quality and can lead to waste and possibly rejections. This is why the quality of the anilox roll has a tremendous influence on printing quality. The MDC Soft Blade from Daetwyler SwissTec has been developed to deal with the above issues and minimise scoring. 1. Look for dried ink at the edges of the cylinders. R. Hall. Charlotte, NC *Wikoff Color Technical Data Sheets list the recommended additives for pH adjustments. Check the cylinder radius. Doctor blade choice, chamber settings and press settings all play a large part in increasing or decreasing the life of an anilox. An anilox roll is a hard cylinder, usually constructed of a steel or aluminum core which is coated by an industrial ceramic whose surface is engraved with millions of very fine dimples, known as anilox cells. Our product is designed by using sharp edge technology and advance machines. However, if an anilox sleeve will… Read More. Information Center Facilities Harper GraphicSolutions, the technical service team affiliated with HarperScientific, employs hands-on industry veterans to assist converters with troubleshooting and problem solving. Anilox sleeves: Use “aluminum safe” cleaners on all anilox sleeves. Markets Served Top Causes of Anilox Scoring and How to Prevent Them. It is designed to deliver a precise and consistent amount of ink to the printing plate. The anilox is the heart of the printing press. The lacquer chamber incorporates two scraper blades that can clean the surface of the roller leaving only a predetermined amount of lacquer in the rollers engraved cells. ARC International supports you with all types of fabricated cylinders and mandrels, as well as an extensive library of drawings, in both hardcopy and electronic format. *Wikoff Color Technical Data Sheets list the recommended additives for drying adjustments, *Wikoff Color Technical Data Sheets list the recommended additives for viscosity adjustments. As a leader in the precision proofing market, HarperScientific supplies precision proofers, safe and user-friendly ink cleaners and measurement equipment. Protect your anilox roll investment by storing them properly. HarperScientific has U.S. facilities in Charlotte, NC, and Green Bay, WI. Anilox produced with Fibre Optic lasers with multi-burn technology with a capability of engraving 790L/CM(2000 LPI) LEARN MORE CONTACT US. Coating Rolls All anilox rolls will require replacement at some point. Use an ultrasonic cleaning system monthly. Click to Enlarge. Selecting an anilox roll does not have to be complicated. Perfectly constructed anilox rolls should mount and dismount without any issues. Accessories And Testing Adjust anilox roller to “kiss” impressions Inappropriate anilox roll; cell volume too great or cell count too low 4. In Flexo printing, the ratio of the plate screen to that of the anilox must be 1 to 3.5 or even 4. Suggested care of bearings and gears, solutions to plate cylinder over-impressions, corrective actions for misaligned anilox, plate and impression cylinders and cures for excessive impressions between plate and substrate are among the problems addressed in the troubleshooting guide. The ink is picking off, offsetting on the press idler and might be causing blocking issues. The cells on the anilox roller can become clogged with ink residues during use, which reduces the volume of the anilox cells concerned. View the Chart [/one_third] FibreLyte is an exclusive Pamarco product using wound carbon – Fiber/Steel Journal construction – ceramic coated and laser engraved using EFlo™, EFlo-HD™ or ThermaFlo™ engraving method. Keep the insides (bores) and ends of sleeves clean. This can also lead to delamination of the ceramic. Too much heat from dryers or air blowing on print station, Clean the plates and increase press speed, If pH is below 8.8, increase it with the recommended additive*, Replace doctor blade and/or make sure chamber is parallel, Low substrate dyne level or improperly treated substrate, If ink adhesion is OK, add 0.5% pinhole additive under agitation, Improper metering roller or doctor blade settings, Plate cylinder is over-impressed onto substrate, Plate mounting tape is too hard for the images, Contact your local Wikoff team for a faster drying formulation, Contact your local Wikoff team for a primer, Ink system may not be optimized for your application, Contact your local Wikoff team to verify you have the right ink system, Too much anilox-to-plate or plate-to-substrate pressure, Adjust pressure setting of metering roller, Add defoamer to ink, small amounts at a time, Use lower volume anilox for first-down ink, Increase heat and air flow on first-down unit, Skip a unit between first-down and second-down ink, Particles are lodged under the doctor blade, Filter ink and clean behind the doctor blade, Increase heat and air flow in drying stations, Reduce web temperature before rewind with a chill roller, Change to higher screen count, lower volume anilox, Change to a harder durometer rubber roller, Adjust anilox roller to “kiss” impressions. Anilox Rolls Our Technical Service team has seen it all—from mottled print to those dreaded halos—so they’ve compiled a list of the top issues faced by water-based flexo printers and their recommended solutions. Reduce dryer heat or eliminate air flow on print station. Replace the doctor blade. Anilox rolls should be inspected for cleanliness and if they need attention, they should be cleaned as soon as possible. Today "Sanilox" offers creativity, Commitment, Quality & Outstanding personnel's. The vastly reduced weight makes it very easy to handle and ideal for multiple roll changes or where hoisting is not present. *Wikoff Color Technical Data Sheets list the recommended solvents for viscosity adjustments. 15 Most Common Water-Based Flexo Issues and How to Troubleshoot Them. HarperScientific™ is the Printing and Coatings Supplies Division of  Harper Corporation of America. Charlotte, N.C., February 22, 2010 – Harper GraphicSolutions™, the technical service arm of global anilox supplier Harper Corporation of America, has produced an illustrated guide for troubleshooting anilox roll applications. Discover the five simple steps to selecting an anilox roll. Your email address will not be published. It is responsible for the transfer of a precisely specified quantity of ink onto the printing plate. Anilox are cleaned and cells are restored to their like-new condition within 1-2 working days depending on the condition of the roll. Mottled print The print has a mottled or flecked appearance, with coloured or black circles usually appearing in light colours. Troubleshooting. Your anilox the print run is damaged or dirty: ink viscosity too Water! Air flow on print station UV-ink markets seminars are available on-site or at facilities! Ink residues during Use, which reduces the volume of the plate screen that... 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