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FLEXO Magazine : August 2014
printed on film using conventional UV curing at a slow press speed. The data collected from the control tests was consistent with the origi- nal runs and therefore validated the previous printruns. Variable combinations per run included: • Type of Substrates » Avery Denison 60# Elite/C2500/40# Paper » Avery Denison SF 2.6M WH BOPP TC/S692N Film • Type of Curing System » Conventional Mercury Vapor UV » LEDUV • Type of Ink » Flint Group Flexocure Force (Conventional UV) » Flint Group EkoCure (LED UV) • Press Speed » “Low Speed” (150 fpm) » “High Speed” (400 fpm) The test target (seen in Image 1) provided measurements of various print variables. A color bar was placed on each side of the target in order to test the ink density, ink durability and L*a*b* values of the C, M, Y and K inks. L*a*b* values define colors within a color space, where L measures lightness and a and b measure color opponent dimensions. Other items on the test target were positive and reverse type, trap, tonal blocks, ink durability (using the scratch, alcohol swab and tape tests), gray balance, slur and distortion rule (Ploumidis). Each run in this experiment is defined as follows: • Original Pressruns » Run A (film, conventional UV, low speed) » Run B (film, conventional UV, high speed) » Run C (paper, conventional UV, low speed) » Run D (paper, conventional UV, high speed) » Run E (paper, LED UV, low speed) » Run F (film, LED UV, low speed) » Run G (film, LED UV, high speed) » Run H (paper, LED UV, high speed) • Verification Runs: » Run I (paper, conventional UV, low speed) » Run J (film, conventional UV, low speed) ■ About the Authors: Natalee Consulo is a graduate of the Graphic Com- munication department at California Polytechnic State University, San Luis Obispo. She concentrated in Graphics for Packaging and earned her minor in packaging through the Industrial Technology department. This past year, Natalee was the production manager at University Graphic Systems, a student run print company on campus. She was also involved with Cal Poly’s winning Phoenix Challenge team, Mat Pica Pi (a social club in the department), and was awarded with the Rossini Scholarship this past year. Natalee began her career in the packaging industry at RockTenn’s Merchandising Displays division in July. Lena Haidar is a recent graduate of the Graphic Communication department at California Polytechnic State University, San Luis Obispo. She concentrated in Graphics for Packaging and also earned a minor in Packaging. While at Cal Poly, Lena was involved in Poly Pack, a club that focuses on educating students about the packaging industry and connecting them with industry professionals. During her time at Cal Poly, she also participated in various packaging projects, including Cal Poly‘s winning Phoenix Challenge team in 2014. In the 2012-2013 school year, she was the sheetfed manager at University Graphic Sys- tems, a student run commercial printing and digital imaging company on Cal Poly’s campus. She was a recipient of the Rossini Scholarship, which supported the research and findings highlighted in this project. Lena began her career with RR Donnelley in Torrance, CA. Mark MacManus grew up in the sunny beach town of Carlsbad, CA, just north of San Diego. As a child he had a passion for creativity and followed his love for design through a B.S . in Graphic Communication. During his college career at California Polytechnic State University, San Luis Obispo, he traveled to Barcelona to become fluent in Spanish. In 2013 he finished his B.S. in Graphic Communication and minored in Packaging and Spanish. Mark is looking forward to applying what he learned at Cal Poly at his recently accepted job as the Packaging Devel- opment Lead at Cartamundi USA in San Francisco. 36 FLEXO | AUGUST 2014 Image 1: The test target used during the experiment.