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Systems and methods for forming raised markings on substrates for Braille identification and security and to facilitate automatic handling of the substrates
Systems and methods for forming raised markings on substrates for Braille identification and security and to facilitate automatic handling of the substrates
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机译:用于在基板上形成凸起的标记以识别盲文和确保安全并促进基板自动处理的系统和方法
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摘要
Haptic or tactile features, which are generally not visually perceptible or reproducible, are applied at varying positions on a substrate according to a predetermined scheme. A plurality of raised image areas are specified for a group of substrates and raised marks are printed in only one raised image area for each substrate in a manner that is evenly distributed between the raised image areas for the group of substrates. The substrates will present a relatively uniform stack avoiding localized large pile heights when the substrates are stacked. A clear marking material is used to print the raised marks so as not to obscure underlying data printed on the substrate. The clear marking material may include a monomer that may become cross-linked in an exposure process to resist deinking of the substrate. The clear marking material may be mixed with a phosphorescing or fluorescing material as an additional security measure.
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