The Impact of FM-AM Hybrid Screening and Am Screening on Flexographic Printing Quality | ||||
| International Design Journal | ||||
| Article 14, Volume 5, Issue 4 - Serial Number 16, October 2015, Page 1471-1476 PDF (2.15 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/idj.2015.93687 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Khaled Talaat Youssef | ||||
| Assistant Professor, Printing, Publishing and Packaging Dept., Faculty of Applied Arts, Helwan University, Egypt. | ||||
| Abstract | ||||
| There are many factors that have an effective impact on the quality of the printed image, one of these factors is halftoning which plays main role for controlling in the image details particularly in highlight areas, without the ability to adjust highlight areas the minimum dots will be lost on the plate and we will suffer to obtain an optimum image details. Halftoning methods can be classified into three main categories, AM (Amplitude Modulated) , FM (Frequency Modulated) and hybrid screening. This study investigates the effect of FM-AM hybrid and AM screenings on printing quality of flexography printing particularly in highlights areas and image. The study employs a test form that be generated in two screening techniques, the FM/AM hybrid screening technology (Kodak/ Maxtone) for highlights areas from 1-6% and the halftones areas from 7-99% were employed AM dots. After printing the measurements were evaluated. It is hoped that the results of this study can help Egyptian flexography printers to better understand the characteristics of both screening techniques to improve printing quality and achieve the highest customer satisfaction. | ||||
| Keywords | ||||
| - FM-AM Hybrid screening; - AM screening; - halftoning; - bump up curve; - pre-press; - flexography | ||||
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