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Photochromic ink-based bank note detection method

A detection method and a color-changing ink technology, which are applied in the authenticity inspection of banknotes, handling coins or valuable banknotes, instruments, etc., can solve the problems of rare banknote anti-counterfeiting detection methods, poor anti-counterfeiting effect, and high missed detection rate

Inactive Publication Date: 2016-03-30
湖南丰汇银佳科技股份有限公司
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Problems solved by technology

Since my country issued the 2005 version of 50 yuan and 100 yuan banknotes, anti-counterfeiting detection methods for this banknote are rare, and the rate of missed detection is slightly high. Sometimes it can only be determined by searching the crown number and code of the banknote, and the anti-counterfeiting effect Difference

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  • Photochromic ink-based bank note detection method
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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0036] A banknote detection method based on photochromic ink, the specific steps of which are: ① place the banknote to be checked on a horizontal surface; Reflection and interference, the white light is reflected from the photochromic ink of the banknote to be checked, and the reflection angle is θ; ③ Right above the white light irradiated on the photochromic ink of the banknote to be checked, a photoelectric receiving device is installed to receive in the direction perpendicular to the face of the banknote device, on the obliquely above the other side corresponding to the angle of incidence, a photoelectric receiving device is installed, which is a receiving device in the direction of viewing the bill face, and two groups of photoelectric receiving devices conve...

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Abstract

The invention relates to a photochromic ink-based bank note detection method and provides a photochromic ink-based detecting and anti-counterfeiting means specific to variable-color optically-variable figures and variable-color optically-variable safety lines on 2015-edition Chinese 100 yuan banknotes. The method specifically comprises the steps of placing a to-be-detected bank note on a horizontal plane; irradiating the white light onto the photochromic ink part of the to-be-detected bank note by an LED white-light lamp, and reflecting and driving the white light to leave the photochromic ink part of the to-be-detected bank note after the refraction, the reflection and the interference of the light; respectively arranging a photoelectric absorption device right above and obliquely above the photochromic ink part of the to-be-detected bank note that is irradiated by the white light; respectively and electrically connecting the above two photoelectric absorption devices with a photoamplifier circuit, switching on a photoelectric signal processing system and a recognition processing system, amplifying an electrical signal, sending the amplified electrical signal to the photoelectric signal processing system and the recognition processing system for comparison and judgment, recognizing whether the photochromic ink of the to-be-detected bank note is normal or not, and judging the authenticity of the to-be-detected bank note. According to the method, the method has the advantages of fast detection speed, strong pertinence and good anti-counterfeiting effect.

Description

technical field [0001] The invention relates to the field of counterfeit detection and identification of banknotes, in particular to a method for detecting the optical color-changing ink on the banknotes to judge the authenticity of the banknotes. Background technique [0002] With the continuous development of the national economy, the volume of RMB cash transactions continues to increase. Paper money is the main currency of RMB issued by my country and plays a very important role in economic activities. There have always been criminals manufacturing and circulating counterfeit money and alterations This seriously disrupts the financial order and economic stability, and damages the public interest of the country. In order to improve the orientation ability of banknotes, anti-counterfeiting technologies such as paper anti-counterfeiting, ink anti-counterfeiting and printing anti-counterfeiting have been continuously developed and improved. In recent years, with the continuous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/1205
CPCG07D7/12
Inventor 江和平陈大夫谭卫清王连珍
Owner 湖南丰汇银佳科技股份有限公司
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