Improving a method for determining the level of wear of the mark for people with visual impairments on Ukrainian hryvnia banknotes
DOI:
https://doi.org/10.15587/1729-4061.2023.287746Keywords:
mark for people with visual impairments, wear of banknotes, denomination identification, Ukrainian hryvniaAbstract
The object of this study is the wear resistance of marks for people with visual impairments, which are printed by the intaglio printing method on Ukrainian hryvnia banknotes to identify the banknote denominations. The subject of the study is to determine the impact of wear on the recognizability of marks for people with visual impairments and the identification of banknote denominations by people with visual impairments. The paper considers the problem of inadequate assessment of the level of banknote wear by the systems of control and rejection of protected products from the point of view of banknote accessibility for people with visual impairments.
An improved methodology for determining the level of wear of the mark for people with visual impairments on Ukrainian hryvnia banknotes is given, taking into account the indicator of its accessibility for all population groups, in particular for people with absolute vision loss, throughout the entire period of circulation. According to the developed methodology, artificial wear of banknotes was carried out according to three test options. The results of changes in the mass of banknotes, the microstructure of the surface of banknotes, the compressibility of marks for people with visual impairments (elasticity level), and the level of tactile identification of the denomination of banknotes by people with total vision loss were obtained. It was determined that during the artificial wear of banknotes, the main destruction of the mark takes place in the first cycle. After the second cycle of wear, there is an increase in the elasticity of the mark for people with visual impairments, a decrease in the level of its tactile sensation and the identification of the denomination of the banknote. Therefore, the properties of banknotes after the second cycle of wear have been determined to be critical for withdrawing such banknotes from circulation.
The revealed regularities make it possible to adjust the parameters of intaglio printing during the production of banknotes and to adjust the sorting equipment to determine the suitability of banknotes for further circulation, taking into account the criterion of accessibility of banknotes for all groups of people.
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Copyright (c) 2023 Tetiana Kyrychok, Olena Korotenko, Yaroslav Talimonov, Andrii Kyrychok
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