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    • 9. 发明公开
    • REUSABLE WATER WRITING PAPER, PREPARATION METHOD THEREOF, AND INKLESS PRINTING DEVICE USED FOR SAME
    • 威斯康星州WASSERSCHREIBPAPIER,HERSTELLUNGSVERFAHRENDAFÜRUND TINTENLOSE DRUCKERVORRICHTUNGDAFÜR
    • EP3045587A1
    • 2016-07-20
    • EP14842864.2
    • 2014-09-03
    • Jilin University
    • ZHANG, Sean Xiao-AnSHENG, LanLI, Minjie
    • D21H27/30
    • D21H19/42D21H5/0047D21H11/14D21H21/30D21H23/50D21H25/02
    • The present invention relates to a reusable water writing paper, as well as to its production process and an inkless printing device thereof. The reusable water writing paper is consisted of a substrate as structure-support material, a color-displaying component supported on the substrate, and an optional performance-enhancing additive, wherein the color-displaying component is an oxazoline-based hydrochromic dye, which can change color obviously to display characters and/or patterns after contacting with water, and revert to the initial color to disappear the displayed characters and/or patterns after the water is removed, thereby the water writing paper is reusable. The paper is not only suitable for the exercise of writing or drawing with a brush pen, but also can be used for daily writing with a pen. Furthermore, inkless printing also can be achieved by spraying water.
    • 本发明涉及一种可重复使用的书写纸,以及其生产工艺及其无墨打印装置。 可重复使用的书写纸由作为结构支撑材料的基板,支撑在基板上的显色部件和可选的性能增强添加剂组成,其中显色成分是基于恶唑啉的水铬色素,其可以 与水接触后,颜色明显变化以显示字符和/或图案,并且在水被移除之后恢复到初始颜色以消除所显示的字符和/或图案,从而水写字纸是可重复使用的。 本文不仅适用于用笔刷进行写作或画画练习,还可用于笔的日常写作。 此外,也可以通过喷水来实现无墨印刷。