目的 探索影响荧光凹印油墨透明度的因素，研究获得高透明度的条件。方法 采用4种荧光粉和4种蜡粉，设计制备一系列适用于塑料薄膜的荧光凹印油墨样品，通过肉眼初略观测样品的透明度，使用荧光金相显微镜观察样品微区表面，深入探索透明度影响因素，通过紫外可见分光光度计开展可见光区的透射率研究，并测试所得优选配方油墨的印刷适性指标粘度、细度、附着牢度和初干性。结果 经肉眼观察发现，使用油溶性佳的自制稀土配合物荧光粉所制样品1-1透明度明显高于使用市售荧光粉所制油墨样品1-2/3/4的透明度；采用自制粉分别与4种蜡粉制备的样品2-1/2/3/4中，样品2-4比其他3种样品更透明。荧光金相显微镜观察结果表明，自制粉和蜡粉4在样品中呈现微纳尺寸分布是获得高透明度的主要条件。透射率研究结果发现采用油溶性佳的蜡粉4可使油墨样品获得高达99.28%的透明度。样品2-4的粘度为28 s，细度为0 mm，附着牢度为99%，初干性为33。结论 采用自制粉和蜡粉4有助于显著提高所制荧光凹印油墨的透明度，所得优选配方油墨印刷适性符合GB/T 18754—2002的要求。

The work aims to research the conditions to obtain high transparency by exploring the factors that affect the transparency of fluorescent gravure inks (FGIs). A series of FGI samples were designed and prepared based on four kinds of phosphors and waxes, respectively. The transparency of samples was observed at first sight with naked eyes. The micro-area surface of the samples was observed with fluorescent metallographic microscope to deeply explore the factors that affected the transparency. The transmittance of visible region was studied with ultraviolet-visible spectrophotometer, and the printability indicators (such as viscosity, fineness, adhesion and initial dryness) of optimal formula ink obtained were tested. Based on the observation with naked eyes, the transparency of sample 1-1 prepared with self-made rare earth complex --- phosphors of excellent oil solubility was apparently higher than that of ink samples 1-2/3/4 prepared with commercially available phosphors. In samples 2-1/2/3/4 prepared with self-made powder and four kinds of waxes, sample 2-4 was more transparent than other three samples. The observation results of fluorescent metallographic microscope indicated that, the self-made powder and wax 4 took on micro-nano size distribution in samples and such distribution was the major condition to obtain high transparency. The transmittance research results showed that, with wax 4 of excellent oil solubility, the transparency of ink samples achieved could be as extremely high as 99.28%. The viscosity of sample 2-4 was 28 s, the fineness was 0 mm, adhesion was 99% and initial dryness was 33. It is concluded that the adoption of self-made powder and wax 4 is conducive to significantly improving the transparency of fluorescent gravure ink. The printability of the optimal formula ink obtained conforms to the requirements of GB/T 18754—2002.