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FLEXO Magazine : June 2009
FTA TODAY company date press comments Back to Basics by Ruth Buckley of Bancroft Bag and Richard Black of All Printing Resources, which took place Tuesday, May 5 at 8 a.m. Lanska encouraged the use of documentation and in-plant standardization. Items that should be controlled include: specifi cations for critical components, cell condition (through proper care and cleaning), ink formulation, and job parameters used for job approval. He also advocated running to the numbers and maintaining ambient air temperature and humidity. “Training is not an expense,” he further stated. “It’s an investment in success.” Speaking on a similar, note, Catherine Haynes of All Printing Resources promoted simplifying complex processes, and modeled her theories after Einstein’s e=mc2 conclusion: o=vp2 C formula. Her , or output is equal to variables times profi le (squared). She also credited George Leyda and Sam Ingram of Clemson University with devising the PASOCCI approach (Plan, Analyze, Stabilize, Optimize, Characterize, Control, Improve) to successful implementation of profi ling and achieving predictable results. Her conclusion: consistency isn’t rocket science. “The tools and software are affordable and user friendly.” On the topic of computer-to-plate (CTP) technology, Dominic Ibarra of Anderson & Vreeland said “CTP has been around long enough,” and added, “It’s not magical.” The technology does help control processes, he claimed. “It’s predictable and repeatable.” CTP is not an imagesetter, he insisted, and takes much less effort to maintain. He then offered tips for linearity, calibration and even troubleshooting. 44 FLEXO JUNE 2009 Flexo 101 Session Supports Reducing Variables “Training is not an expense. ontrolling variables is the key to success, according to David Lanksa (Stork Cellramic). He led the procession of experts in the Flexo 101 Session, chaired It’s an investment in success.” —David Lanska, Stork Cellramic After explaining how human eyes perceive light and color, Bradley K. Taylor (DuPont) revealed that the limit of our perception is 150 microns, or 170 lpi. He noted that there are two types of dot gain: mechanical, in which the printed dot increases in size, and optical, in which light creates a shadow of about 10 microns around a dot. Basic dot gain compensation curves don’t account for this, and images will lose gray levels. But sharpening dots as occurs in a digital workfl ow will help get those levels back. Wrapping things up was Harper Corporation of America’s Bill Poulson. Again addressing variables, he encouraged attendees to standardize their anilox inventory to reduce them. He echoed earlier comments by Lanksa in that even two aniloxes of identical line screens could have different volumes as a result of inadequate cleaning and care. Optimize according to FIRST, he advised. Poulson also recommended correlating proofers to presses for better color matches. ■ www. f le xography. org 123456789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 IT8.7/4-2005
Sustainable Spring 2009