Detection device for identifying variable-color ink
A detection device and a technology for color-changing ink, which are used in the inspection of the authenticity of banknotes, the processing of coins or valuable banknotes, instruments, etc., can solve the problems of low forgery and complex ink technology and process, so as to improve accuracy and reduce costs. Effect
Inactive Publication Date: 2017-10-31
BEIJING NUFRONT SOFTWARE SCI TECH
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Problems solved by technology
Moreover, the technology of the ink is complicated, and it cannot be copied by equipment such as high-definition copiers and color scanners, and the forgery is low. It is reported that the updated version of the RMB will continue to use this anti-counterfeiting ink
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[0038] Through the control of the manipulation unit, the paper delivery mechanism (14) transfers the sample to be tested to a proper position, and gives a feedback signal to the manipulation unit.
[0039] Adjust the positions of the light source (12) and the mirror (13) through the operation of the control unit, so that the banknotes or bills to be detected have the expected collection effect, that is, within the field of view of the camera, the multi-angle optical characteristics of the sample to be detected are formed at the same time, and Give a feedback signal to the control unit.
[0040] Through the control of the control unit, the camera collects images of symbols or graphics, and transmits the data to the storage unit on the control unit for storage for further processing, and gives a feedback signal to the control unit.
[0041] Under the control of the control unit, the images of symbols or graphics collected by the camera are compared and analyzed through a series ...
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The invention discloses a detection device for discriminating color-changing ink, comprising: a main base frame, a camera, a light source, a mirror, a paper conveying mechanism and a control unit; wherein, the paper conveying mechanism is arranged inside the main base frame; The camera is fixed on the main base frame through mechanical parts and is located above the paper conveying mechanism; the mirror surface and the light source are connected to the main base frame through mechanical parts, and the positions of the mirror surface and light source can be dynamically adjusted; the control unit is used to control the camera, mirror surface, and light source The operating state of the camera and the paper conveying mechanism, as well as the angle and position of the mirror and the light source are controlled by the control unit. The device proposed by the present invention can effectively reduce the cost and further improve the accuracy of recognition in the "multi-angle optical feature" automatic detection equipment, especially in the equipment for banknote detection and recognition and trademark quality detection.
Description
technical field [0001] The invention relates to the field of photoelectric technology, in particular to a detection device for identifying color-changing inks. Background technique [0002] High-end anti-counterfeiting technology with "multi-angle optical characteristics" is increasingly used in valuable printed matter including banknotes, tickets and trademarks. Optical variable ink (OVI, Optical Variable Ink, also known as 'color-changing ink') ) and holographic patterns are typical representatives. [0003] Color-changing ink, that is, adding special anti-counterfeiting materials to ink binders, special printing inks processed by special processes, using special functional colorants and binders to achieve anti-counterfeiting purposes. When the ink is in the light and heat environment, the authenticity of the ink can be identified by observing the color change of the ink print. This type of anti-counterfeiting technology is characterized by simple implementation, low cos...
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Inventor 鲍东山唐辉成和建
Owner BEIJING NUFRONT SOFTWARE SCI TECH