Mingmei Stereoscopic Fluorescence Video Microscope MZX81 Helps Break through Zhu Mo's Timing Problem

Zhu Mo's time series test is one of the technical problems of document inspection. At present, the common scraping method and microscope observation method are very difficult, and the false detection rate is very high. Most of the appraisers have a lingering fear of Zhu Mo's time series test, and dare not draw conclusions easily.

Mingmei Optoelectronics cooperated with a number of judicial appraisal agencies to set up research special projects. After a period of efforts, it finally developed a stereoscopic fluorescent video microscope that can effectively identify Zhu Mo's time series: MZX81.

Experimental sample:

The ink and ink are printed with the laser printed text and the black signature pen text, respectively, in accordance with the different order of Zhu ink.

experiment:

1, the ink (oil) and laser print text Zhu ink timing.

a. After using the stereoscopic fluorescence video microscope, the phenomenon is quite obvious, and the Zhu ink timing can be directly determined:

b, some are not obvious, need to eliminate the fluorescence treatment at the leak. Take a light-transparent photo and mark the location of the leak before taking a fluorescent photo. When analyzing the Zhu ink timing, it is necessary to eliminate the fluorescence at the leak hole and find out whether there is fluorescence at the non-leakage position to determine the Zhu ink timing.

2, ink (mud) and hand-painted strokes of Zhu ink time series, ink mud (oil) and handwritten strokes of the cross-sequence recognition mainly to find a typical situation.

a. If Zhu ink is first, when the ink is thicker, the handwriting will “slip” at the ink mark, forming a hollow phenomenon, or the ink of the text stroke will accumulate on both sides of the pen mark and cover the fluorescence of the ink.

b. If Zhu is first inked, there will be no fluorescent phenomenon in the deep part of the pen mark; the phenomenon of ink-filled fluorescent painting will appear on both sides of the stroke, and the fluorescence of the granular ink will be observed at the fiber protrusion.

Summary: Mingmei stereoscopic fluorescence video microscope test Zhu ink timing, is an advanced test method, in most cases can effectively carry out Zhu ink timing recognition, and the accuracy is extremely high; for some Zhu ink timing that can not be determined by the above method, Appraisers are required to try other methods, and combined with the Mingmei stereoscopic video microscope MZX81 to confirm each other.