Studying the formation of braille element height on wastepaper cardboard of HM type. Printing and Publishing. Ukrainian Academy of Printing

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Maik V. Z.	№ 1 (77)	49-62

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References

Nowadays, the information space of Braille typeface is being developed to provide equal opportunities for people with special needs. This is largely due to Braille typeface application on various types of products in the pharmaceutical, food and other industries that complies with the European Union's regulations on the mandatory application of the information in the Braille format on packaging of medicines and other products. Accordingly, there is a growing need for a qualitative and affordable way of Braille text application on the packaging. And the ability of accurate reproduction of Braille elements on a cardboard packaging for reliable reading of the information by people with visual impairment is of particular importance. The correct and accurate perception of the information by people with visual impairments is particularly dependent on the height of Braille typeface. The article is devoted to the study of the dependency of Braille element height on a low-volume wastepaper of HM type, which is intended for the production of consumer packaging for industrial products from its technological parameters and pressure forces. A study of technological forces at a different height of Braille element has been done with the use of a device, which allows the simultaneous registration of the stamping force and the counter-stamp movement with a given cyclicity of the device. The study of the height of Braille element is an important task, since the reliability of reading the information by people with visual impairment depends on its height. The dependency of the pressure p from the height h has been determined as a result of the experimental studies. The transition from uneven intervals in h and ms has been made to even ones in order to clarify the analytical relations between the pressure p and the parameters (h, ms). In this case, the method of interpolation as well as the method of least squares have been used for the construction of nonlinear and linear dependencies of the type p = p(ms), p = p(h).

Keywords: Braille typeface, element height, pressure force, cardboard, analytic dependencies, method of least squares.

doi: 10.32403/0554-4866-2019-1-77-49-62

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