Abstract: Objective Study on the technology of revealing the latent fingerprint on the surface of RMB by LED multi-band light source. Methods Using the fluorescent reagent of Rhodamine 6G to dyeing processing the latent fingerprint on the surface of RMB; Using the green light which wavelength at 520 nm output by the LED multi-band light source irradiated the samples, Observe and photograph latent fingerprints image through the 580 nm band-pass filter. Results A luminous image of latent fingerprint with bright ridges and dark background were obtained. Conclusion This method can reduce the interference of background, and improve the efficiency of detection for the latent fingerprint on the surface of RMB .

摘要： 目的 研究显现、提取遗留在人民币上潜在指印的方法。方法 采用荧光试剂罗丹明6G对人民币进行染色处理，以LED多波段光源输出的波长为520nm的绿光照射检材，透过580nm的带通型干涉滤光镜观察指印的显现效果，并拍照提取。 结果 获得亮纹线暗背景的指印图像，指印纹线清晰，反差良好，特征丰富，具备良好的检验鉴定条件。 结论 LED多波段光源输出的波长为520nm的绿光与罗丹明6G染色指印的吸收特性吻合，是显现、提取遗留在人民币上潜在指印的良好光源。

关键词: 多波段光源, 罗丹明6G, 潜在指印, Multi-Band Light Source , Rhodamine 6G, Latent fingerprint