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Double-layer overprinted photoresponse two-dimensional code and preparation method thereof

A two-dimensional code and photoresponse technology, applied to seals, record carriers used by machines, instruments, etc., to achieve the effects of low preparation cost, simple operation and convenient application

Active Publication Date: 2017-09-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the papers and patents in the above-mentioned related fields, it can be found that the existing two-dimensional code improvement technologies focus on the encryption of single-layer information of two-dimensional codes, the increase of the load information of two-dimensional codes, and the single-layer invisible anti-counterfeiting of two-dimensional codes, etc. On the one hand, that is to say, the current two-dimensional code can only display one kind of information on the anti-counterfeiting information display. Not found, but the two-dimensional code that can display multi-layer information has an urgent market demand in the field of high encryption

Method used

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  • Double-layer overprinted photoresponse two-dimensional code and preparation method thereof
  • Double-layer overprinted photoresponse two-dimensional code and preparation method thereof
  • Double-layer overprinted photoresponse two-dimensional code and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A preparation of a two-layer overprinted photoresponsive two-dimensional code, the steps are as follows:

[0050] (1) Generate two QR codes with different information in the QR code generator, and determine the display order, and then use an inkjet printer at a quantitative rate of 120g / m 2 Print the first yellow QR code on the paper;

[0051] (2) Dissolve 1g of 1,3,3-trimethyl-6-nitro-indoline-spiropyran and 9g of polylactic acid in dichloromethane, mix them evenly with mechanical stirring for 30min, heat to volatilize the dichloromethane, and Extrude a transparent wire with a diameter of 1.75mm in the extruder at a temperature of 180°C, install the transparent wire on an FDM 3D printer, and use a 3D printer to print a transparent two-dimensional layer with a thickness of 0.1mm on the surface of the first layer of QR code. code to obtain the two-layer overprinted photoresponsive two-dimensional code.

[0052] Both the color of the backing layer and the first layer of...

Embodiment 2

[0055] A preparation of a two-layer overprinted photoresponsive two-dimensional code, the steps are as follows:

[0056] (1) Generate two QR codes with different information in the QR code generator, and determine the display order, and then use an inkjet printer at a quantitative rate of 120g / m 2 Print the first layer of red QR code on the paper;

[0057] (2) Use 5ml of trimethylsilyl-modified diarylethene / xylene solution and 1ml of 4-acryloyloxybenzophenone / xylene solution, mix with each other and mechanically stir for 20min to mix evenly, and then use screen printing The machine prints the second layer of the two-dimensional code on the surface of the first layer of the two-dimensional code to obtain the above-mentioned double-layer superimposed photoresponsive two-dimensional code.

[0058] Both the color of the backing layer and the first layer of the QR code are gray, and the color gray level of the first layer of the QR code is greater than that of the backing layer, w...

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Abstract

The invention discloses a double-layer overprinted photoresponse two-dimensional code and a preparation method thereof. The double-layer overprinted photoresponse two-dimensional code comprises a back lining layer (1), a first two-dimensional code layer (2) and a second two-dimensional code layer (3), wherein the first two-dimensional code layer (2) is printed on the surface of the back lining layer (1), the second two-dimensional code layer (3) is overprinted on the upper surface of the first two-dimensional code layer (2), and only the first two-dimensional code layer (2) is displayed under visible light. According to the method, after two types of produced two-dimensional codes are ordered, the two-dimensional codes are sequentially printed on the back lining layer, and the double-layer overprinted photoresponse two-dimensional code is obtained. Through the double-layer overprinted photoresponse two-dimensional code, display of two-layer information can be realized, and mutual interference is avoided in the display process, so that the anti-fake effect is remarkable; through the preparation method, operation is simple, material sources are wide, preparation cost is low, industrial production can be realized, and a new idea and approach are provided for realizing high anti-fake performance and functionalization of two-dimensional codes.

Description

technical field [0001] The invention belongs to the fields of two-dimensional code information storage and display and anti-counterfeiting, and in particular relates to a two-layer superimposed photoresponsive two-dimensional code and a preparation method thereof. Background technique [0002] Two-dimensional bar code / two-dimensional bar code (2-dimensional bar code) is a specific use of black and white graphics that are regularly distributed in the plane (two-dimensional direction) to record data symbol information. The concept of "0" and "1" bit streams based on the internal logic uses several geometric shapes corresponding to binary to represent text and numerical information, which can be automatically read by image input equipment or photoelectric scanning equipment to realize automatic processing of information. It has some common features of barcode technology. Each code system has its specific character set, each character occupies a certain width, and has certain ve...

Claims

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Application Information

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IPC IPC(8): G06K19/06G09F3/00
CPCG06K19/06037G06K19/0614G09F3/0294G09F3/0297
Inventor 田君飞徐军飞何明辉颜兴艳
Owner SOUTH CHINA UNIV OF TECH
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