2019
DOI: 10.15587/1729-4061.2019.164071
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Determining special features in the topography of paper with water marks at the micro­ and nanolevels

Abstract: Досліджено поверхневу структуру захищеного від підробки паперу із позитивними і негативними водяними знаками при різних масштабах оцінювання -від мікрометрів до рівня нанометрів, на основі методів контактної профілометрії та атомно-силової мікроскопії. Було виявлено, що структурні параметри поверхні захищеного паперу є неоднаковими для ділянок із водяними знаками та без. Результати вимірювання контактним профілометром дали змогу прослідкувати кореляцію між значеннями середнього арифметичного відхилення профілю… Show more

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Cited by 5 publications
(3 citation statements)
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“…The results of measuring the surface profile of paper samples on different areas from the front and mesh side with a negative watermark and areas with a positive watermark using atomic force microscopy are presented in Figure 2 and with the help of mechanical contact profilometry in Figure 3. Next calculations of fractal dimensions were conducted with formula, which was described in work 5 : For three-dimensional objects, the fractal dimension can be calculated using a formula similar to (1), where 𝑥 -= 𝑙𝑛 Since the measurement is made for the surface of the paper, and the fractal dimension is found for a three-dimensional object, the dimension is (1 + D). For providing accuracy of measurements in fractal analysis each image were analyzed several times and average value of fractal dimension was calculated.…”
Section: Research Resultsmentioning
confidence: 99%
“…The results of measuring the surface profile of paper samples on different areas from the front and mesh side with a negative watermark and areas with a positive watermark using atomic force microscopy are presented in Figure 2 and with the help of mechanical contact profilometry in Figure 3. Next calculations of fractal dimensions were conducted with formula, which was described in work 5 : For three-dimensional objects, the fractal dimension can be calculated using a formula similar to (1), where 𝑥 -= 𝑙𝑛 Since the measurement is made for the surface of the paper, and the fractal dimension is found for a three-dimensional object, the dimension is (1 + D). For providing accuracy of measurements in fractal analysis each image were analyzed several times and average value of fractal dimension was calculated.…”
Section: Research Resultsmentioning
confidence: 99%
“…To obtain a bright, saturated imprint with normalized color indicators, not only triad inks, but also Pantone inks are used 3 . However, the use of mixed colors requires special attention and control of color reproduction on the imprint, since normalized color indicators regulated by the standard exist only for triad colors [4][5] .…”
Section: Introductionmentioning
confidence: 99%
“…The analysis of previous studies [1][2][3][4][5] gives reason to assert that the direction of research of color indicators of imprints obtained by the flexographic method on various printed materials is widespread. This is due to the rapid pace of improvement of the components of the technological environment, inks, printed materials, printing forms, anilox shafts, etc.…”
Section: Introductionmentioning
confidence: 99%