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DNA fragment-containing invisible infrared absorbing ink-jet ink and preparation method thereof

A technology of infrared absorption and inkjet ink, which is applied in the direction of ink, household utensils, applications, etc., and can solve the problems of color and no anti-counterfeiting recognition function

Inactive Publication Date: 2015-02-25
CHINA BANKNOTE INK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ink uses infrared dye as a carrier to generate heat to melt the polymer, but it has color and has no anti-counterfeiting identification function

Method used

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  • DNA fragment-containing invisible infrared absorbing ink-jet ink and preparation method thereof
  • DNA fragment-containing invisible infrared absorbing ink-jet ink and preparation method thereof
  • DNA fragment-containing invisible infrared absorbing ink-jet ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Invisible infrared absorbing inkjet ink containing DNA fragments. Its formula is as follows:

[0027]

[0028] The polymer-wrapped DNA fragments are random DNA fragments, which have no specific biological meaning and are only used as anti-counterfeiting marks. The PCR method can be used to determine whether the above-mentioned DNA fragments are included in the sample, so as to identify the authenticity of the sample. Just as an example, the inventor randomly selected a 310bp DNA as the anti-counterfeit marker, and designed matching primers for detecting the anti-counterfeit marker by PCR method. The DNA fragment and the matching upstream and downstream primers were respectively entrusted to Shanghai Sangon Bioengineering Co., Ltd. to synthesize.

[0029] The sequence and primer design region of the anti-counterfeiting mark are as follows:

[0030] TACATCCTCCC TGTCTGCCTCTCTGGGAG ACAGAGTCACCTCAGTTGCAGGGCAAGTCAGGACATTAGCAATTATTTAAACTGGTATCAGCAGAAATCAGATGGAACTGTTAAAC...

Embodiment 2

[0048] Invisible infrared absorbing inkjet ink containing DNA fragments. Its formula is as follows:

[0049]

[0050] DNA fragments and detection methods are the same as in Example 1.

[0051] The specific preparation method is:

[0052] Put the formulated amount of dye into the stirring device, add the solvent, and stir for 1.0 hour. After the dye is completely dissolved, add deionized water, additives, and DNA fragments to mix, and filter at 30°C with a 1-micron filter membrane to obtain the invisible infrared-absorbing inkjet ink containing DNA fragments;

[0053] Measure the physical properties of the ink mixture, as follows:

[0054] Viscosity: 5.5mpa.s

[0055] Surface tension: 31mN / m

[0056] pH value: 7.5

[0057] Color: as per sample.

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Abstract

The present invention discloses a DNA fragment-containing invisible infrared absorbing ink-jet ink and a preparation method thereof, wherein the DNA fragment-containing invisible infrared absorbing ink-jet ink comprises, by weight, 1-10% of an infrared absorbing dye, 10-25% of deionized water, 1-15% of a moisturizing agent, 1-10% of a dispersant, 0.1-5% of a surfactant, 0.1-2% of a pH value adjusting agent, 0.1-2% of an antiseptic sterilization agent, 0.1-2% of a polymer-wrapped DNA fragment, and the balance of a solvent. The DNA fragment-containing invisible infrared absorbing ink-jet ink has the following two anti-counterfeiting features that: 1, with the light color infrared absorbing dye, the ink is invisible under the visible spectrum; and 2, the ink contains the DNA chain segment. The DNA fragment-containing invisible infrared absorbing ink-jet ink is suitable for the invisible point code anti-counterfeiting, can further be printed on the colored media so as to increase the anti-counterfeiting function on the base of no influence on the original color. In addition, the average particle size of the ink is less than 300 nm, the ink can not block the nozzle, the ink-jet printing speed of more than 100 m / min can be met, the smooth printing can be maintained, and characteristics of no ink flying and rapid drying provided.

Description

technical field [0001] The invention relates to an ink for an inkjet printer and a preparation method thereof. Background technique [0002] Inkjet technology adopts a technology that directly controls the output by a computer. It has no contact, no pressure, and no printing plate. It has the characteristics of plateless digital printing, and can realize on-demand printing and variable data printing. The development of inkjet technology depends on the development of inkjet printing equipment and inkjet ink. With the refinement of inkjet nozzles and the improvement of inkjet printing speed, the requirements for ink are getting higher and higher. Inkjet inks include dye inks and pigment inks. Dye inkjet ink is a fully soluble ink at the molecular level, and the probability of nozzle clogging during inkjet printing is very small. The dye of the inkjet ink adopts anti-counterfeiting material, which can make the inkjet ink be applied to a wider field. [0003] The patent appli...

Claims

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Application Information

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IPC IPC(8): C09D11/50C09D11/328C09D11/38
CPCC09D11/50C09D11/328C09D11/38
Inventor 孟庆飞陈夏萌黄维维袁国林张世范
Owner CHINA BANKNOTE INK
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