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Combined fluorescent pattern and application thereof

A fluorescent and pattern technology, applied in the combined fluorescent pattern and its application field

Active Publication Date: 2018-09-14
SHANGHAI BANKNOTE PRINTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the application of fluorescent anti-counterfeiting technology is mostly the use of a single fluorescent material or the simple superposition of multi-color fluorescent materials, and there are certain limitations in visual effects and anti-counterfeiting performance.

Method used

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  • Combined fluorescent pattern and application thereof
  • Combined fluorescent pattern and application thereof
  • Combined fluorescent pattern and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] image 3 An example of the combined fluorescent pattern of the present invention is shown, which is printed with three-color fluorescent inks.

[0043] The first color is printed with colored fluorescent ink (normal light color: orange, fluorescent color: blue), long-wave fluorescent, parallel lines with an angle of 120°; the second color is printed with colorless fluorescent ink (fluorescent color: green), long-wave fluorescent, parallel lines The angle is 0°; the third color is printed with colorless fluorescent ink (fluorescence color: red), short-wave fluorescence, and the angle of parallel lines is 60°. Through professional graphics and text production software (such as Fortuna, Jura, etc.), each layer of pattern lines performs detail processing and parameter setting according to the grayscale change of the design drawing, ensuring natural and rich transition of details, and hiding digital information separately.

[0044] Under the first observation condition, tha...

Embodiment 2

[0047] Figure 4 Another example of the combined fluorescent pattern of the present invention is shown. Printed with two-color colorless fluorescent ink. The first color is colorless fluorescent ink (fluorescent red), printed with average lines, and the width of the lines in the middle area of ​​the Chinese knot pattern changes uniformly from right to left from thin to thick, with uniform intervals and a line angle of 135°. The second color uses colorless fluorescent ink (fluorescent green), printed with average lines, and the width of the lines in the middle area of ​​the Chinese knot pattern changes uniformly from left to right from thick to thin, with uniform intervals and a line angle of 45°.

[0048] Under the ultraviolet excitation light with a wavelength of 315-380nm, due to the additive color mixing effect, the change of line thickness and density causes the mixed area of ​​red and green fluorescence to form a yellow visual effect, and the transition is natural and so...

Embodiment 3

[0050] Figure 5 Another example of the combined fluorescent pattern of the present invention is shown. Printed with three-color colorless fluorescent ink. The first color is colorless fluorescent ink (fluorescent red), and the average line is printed; the line width changes from thin to thick evenly, the interval is uniform, and the line angle is 135°. The second color is colorless fluorescent ink (fluorescent green), with average line printing; the line width changes from thin to thick evenly, the interval is even, and the line angle is 45°. The third color is colorless fluorescent ink (fluorescent blue), with average line printing; the line width changes from thin to thick evenly, the interval is even, and the line angle is 135°.

[0051] Under the ultraviolet excitation light with a wavelength of 315-380nm, due to the color-additive mixing effect, the density and thickness of the lines are used to achieve the change of the concentration of the color light. The three fluo...

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Abstract

The invention discloses a combined fluorescent pattern and application thereof. The combined fluorescent pattern is formed by combining different printing plate lines and / or images formed in at leasttwo printing layers, at least one printing layer is formed through printing by using colorless fluorescent ink, the other printing layers are formed through printing by using colored fluorescent ink,and at least two printing layers can generate different fluorescence colors under the same excitation light. When the combined fluorescent pattern is applied to an anti-counterfeiting file, one visualpattern can be displayed or not displayed under visible light, and the other visual pattern can be displayed under the excitation light. By means of relative changes between different printing platelines of the printing layers, pattern colors and level changes are achieved due to the color addition effect of light, and the overall level change of the combined fluorescent pattern under the excitation light is difficult to accurately restore under the excitation light, so that great difficulty is caused to copying and counterfeiting, and set targets of safety and counterfeiting prevention areachieved.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting technology, in particular to a combined fluorescent pattern and its application. Background technique [0002] Fluorescent ink is one of the most widely used inks in modern anti-counterfeiting printing. It is suitable for the packaging and printing of securities, certificates and high-grade tobacco, alcohol, medicine, cosmetics and other commodities. At the same time, in the field of security printing, the banknotes of many countries in the world, such as RMB, US dollar and Euro, have also applied fluorescent anti-counterfeiting technology. [0003] CN102241208A describes a colorless fluorescent anti-counterfeiting method. By scanning personalized signatures or graphics into a computer, super-line and frequency modulation processing are performed on original graphics and text, and color overprinting is performed to obtain anti-counterfeiting labels. Colorless fluorescent printing is hidden and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/02B41M3/14
CPCB41M3/14G09F3/02G09F2003/0257
Inventor 汪竹兵励进徐红梅
Owner SHANGHAI BANKNOTE PRINTING
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