A simple procedure to ink-jet print raised images using two water-soluble inorganic inks is reported and it has the potential to be utilised in domestic and commercial environments. The advantages of such a procedure lies in the ability to print moulded objects, Braille type and to engineer special gonio-specific effects that may have value in the security printing area. The study focuses on printing gypsum through the ready precipitation of calcium sulphate dihydrate by co-jetting calcium chloride and ammonium sulphate solutions. The results in this preliminary study are encouraging and offer a potential method for durable surface structuring of material surfaces with haptic and visual effects for both the blind and the sighted.

中文翻译：

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开发用于“凸起”表面特征应用的新型 3D 打印技术

报告了一种使用两种水溶性无机墨水喷墨打印凸起图像的简单程序，它具有在家庭和商业环境中使用的潜力。这种程序的优点在于能够打印模制物体、盲文类型和设计可能在安全打印领域有价值的特殊角度特定效果。该研究的重点是通过共喷射氯化钙和硫酸铵溶液使二水硫酸钙快速沉淀来印刷石膏。这项初步研究的结果令人鼓舞，并为材料表面的耐用表面结构提供了一种潜在的方法，对盲人和有视力的人都具有触觉和视觉效果。