CN105719563B - A kind of preparation method of double anti-forge mark and double anti-forge mark - Google Patents
A kind of preparation method of double anti-forge mark and double anti-forge mark Download PDFInfo
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- CN105719563B CN105719563B CN201610270919.1A CN201610270919A CN105719563B CN 105719563 B CN105719563 B CN 105719563B CN 201610270919 A CN201610270919 A CN 201610270919A CN 105719563 B CN105719563 B CN 105719563B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06018—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking one-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
Abstract
The invention discloses a kind of double anti-forge mark and the preparation methods of dual identification, belong to anti-counterfeiting mark field.The present invention is using the ordinary QR code comprising the first weight anti-counterfeiting information as carrier, introduce under excited state with different ring colors, ring width and interannular away from quantum dot fluorescence colour circle realize second weight it is anti-fake, the quantum dot fluorescence colour circle forms one-dimension code in radial direction, loads one-dimension code end message；Quantum dot fluorescence colour circle optical parameter is by code conversion at specific identification information.The double anti-forge mark of the present invention has good photochemical stability, one-dimension code and the performance of Quick Response Code are superimposed, with the variation of quantum dot emission wavelengths, the information content of anti-counterfeiting mark load is also continuously increased, therefore, the present invention not only increases the anti-counterfeit capability of mark, and improves the information reserves of mark.
Description
Technical field
The invention belongs to anti-counterfeiting mark fields, and in particular to the preparation side of a kind of double anti-forge mark and double anti-forge mark
Method.
Background technology
In the information age, various information are ubiquitous, and information also becomes an indispensable part in life.With
The development of information age, the diversity of information embodies diversity of the world, but also just needs people can be to a variety of simultaneously
Different information can differentiate its true or false.The development of commodity economy promotes the true or false of commodity to judge increasingly to increase.In order to
The information of commodity is obtained well, and people have invented the information that bar code carries out storage commodity, and people are by sweeping bar code
It retouches, the essential information of dependent merchandise can be obtained.But since bar code is easy to be imitated, for commodity counterfeit prevention degree
It is not high.Therefore improving anti-counterfeiting mark just becomes today's society problem in the urgent need to address.
The now very common a kind of anti-counterfeiting mark of Quick Response Code, by the way that affiliated commodity can be obtained to the scanning of Quick Response Code
Essential information.Quick Response Code has the characteristics that storage capacity is big, confidentiality is high, traceability is high, cost is cheap, thus it is many country incited somebody to action
Planar bar code technology is applied to the management of the departments to all kinds of certificates such as public security, diplomacy, military affairs, and Quick Response Code is applied to sea
Management of the departments such as pass, the tax to all kinds of reports and bill, pipe of the departments such as business, communications and transportation to commodity and cargo transport
Reason, automatic management of the postal service to the management, field of industrial production of parcel post to industrial production line.But its own is simultaneously
Do not have anti-fake feature, Quick Response Code must just be reinforced it for anti-fake aspect can not copy performance.And how to improve two dimension
The anti-counterfeiting performance of code is exactly a prodigious problem.
Instantly, commodity are not only to use Quick Response Code, also have part commodity using one-dimensional bar code carry out it is anti-fake and
The preservation of information.Bar code is the multiple secret notes and blank for not waiting width, is arranged according to certain coding rule, to express
The graphical identifier of one group information.Common bar code be the secret note (abbreviation item) to be differed greatly by reflectivity and informal voucher (referred to as
It is empty) pattern of parallel lines lined up.Bar code can mark the producing country of article, manufacturing firm, trade name, date of manufacture, figure
Many information such as book classification number, mail start-stop place, classification, date, thus in commodity circulation, taking care of books, postal management, silver
Many fields such as row system are widely used.Bar codes technique is development and the application with computer and information technology
And be born, it be integrate coding, printing, identification, data acquisition and processing (DAP) new technique.But exist with Quick Response Code
Same problem, the easy imitation of one-dimensional bar code is not so that itself anti-counterfeiting performance is high.
In order to improve the height anti-counterfeiting performance of anti-counterfeiting mark, it is turned into a kind of selection well using quanta point material.Amount
It is sub-, and can be described as nanocrystalline, it is a kind of nano particle being made of II-VI group or iii-v element.The grain size one of quantum dot
As between 1~10nm, since electrons and holes are by quantum confinement, continuous band structure becomes to have point of molecular characterization
Vertical level structure, can emit fluorescence after being excited.Based on quantum effect, quantum dot is in solar cell, luminescent device, optics life
The fields such as substance markers are with a wide range of applications.Due to the magnitude very little of quantum dot, and quantum dot is using luminescence generated by light
Characteristic, when being irradiated with specific light, the proportioning of different quanta point materials, the size of different quantum dots and different quantum dots can all produce
Raw different light, it is possible thereby to anti-fake for carrying out height.
Mentioning reinforcement two-dimension code anti-counterfeit degree in two-dimension code anti-counterfeit report in recent years can add among image in 2 D code
Enter Logo to improve anti-fake degree.It was also mentioned in Chinese patent CN.202159457U a kind of by Quick Response Code and optically-variable figure
Method as being combined.Anti-fake effectiveness can be played in a higher degree in this way, by plural layers it is superimposed in the way of,
Optically variable image is added thereto, realizes that its is anti-fake.Quantum dot has example for anti-counterfeit field：Such as Chinese patent
CN.102296486A《Anti-tamper security band and the cheque paper for applying the anti-tamper security band》、CN102002365A《Transparent nano fluorescence
Material compositions and its application in invisible anti-counterfeiting products》, quantum dot is all employed as main anti-fake material.But these
Method for anti-counterfeit is all less suitable for direct use in product false proof.
Invention content
The present invention is in order to overcome the shortcomings of the prior art, the present invention proposes that one kind reaches by preparing quantum dot colour circle
One-dimension code and the superposition of the performance of Quick Response Code, to realize double anti-fake and obtain more code information carrying breaths, the present invention not only improves
The information reserves of bar code, and improve the anti-counterfeit capability of mark.
The present invention discloses the preparation method of a kind of double anti-forge mark and a kind of double anti-forge mark, the two technical solutions
As described below：
Technical solution 1：
A kind of double anti-forge mark, including the Quick Response Code being arranged in substrate and the quantum dot being loaded on Quick Response Code
Fluorescence colour circle, the quantum dot fluorescence colour circle formed under excited state different ring colors, ring width and interannular away from concentric polycyclic
Structure, the quantum dot fluorescence colour circle form one-dimensional bar code in arbitrary radial direction.
The quanta point material is II-VI race of the periodic table of elements, III-V race, IV-VI race or IV race's semiconductor chemical combination
Quantum dot made from object or its corresponding nuclear shell structure quantum point；The II-VI group semiconducting compound be CdSe, CdTe,
ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS,
HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe CdZnSeS,
CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe or HgZnSTe；The III-V
Race's semiconducting compound be GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, GaNP,
GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs,
InPSb, GaAlNP GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs,
GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs or InAlPSb；The group IV-VI semiconducting compound is SnS,
SnSe, SnTe, PbS, PbSe, PbTe, SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe,
SnPbTe SnPbSSe, SnPbSeTe or SnPbSTe；IV races semiconducting compound is Si, Ge, SiC or SiGe；The core
Core-shell structure quantum dots are that II-VI race of the periodic table of elements, III-V race, IV-VI race or IV race's semiconducting compound are core,
With CdSe, CdS, ZnSe, ZnS, CdO, ZnO, SiO2In one or more nuclear shell structure quantum points for shell.
Technical solution 2：
A kind of preparation method of double anti-forge mark of the present invention, includes the following steps：
Step 1：The loading of Quick Response Code mark；Quick Response Code is arranged in substrate to identify；
Step 2：The preparation of quantum dot ink；The quantum dot of different fluorescent characteristics is dispersed in organic solvent, is added
Enter transparent ink, the quantum dot ink that can emit different wave length is made after mixing；
Step 3：The loading of anti-fake colour circle；Quantum dot ink is loaded on Quick Response Code mark, excited state is formed in
Down with different ring colors, ring width and interannular away from quantum dot fluorescence colour circle, the quantum dot fluorescence colour circle is in arbitrary radial direction
Form one-dimensional bar code；
Quick Response Code ink is loaded by printing, printing, spraying or laser on substrate in the step 1.
Substrate can be the target products such as metal, ceramics, glass article in the step 1, can also be loaded into Quick Response Code
In particular substrate material (such as paper), shift on target product later.
Quanta point material in the step 2 is that II-VI race of the periodic table of elements, III-V race, IV-VI race or IV race partly lead
Quantum dot made from body compound or its corresponding nuclear shell structure quantum point；The II-VI group semiconducting compound is CdSe,
CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe,
HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe
CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe or HgZnSTe；
The III-V semiconductor compound be GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs,
InSb, GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs,
InNSb, InPAs, InPSb, GaAlNP GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs,
GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs or InAlPSb；The group IV-VI half
Conductor compound be SnS, SnSe, SnTe, PbS, PbSe, PbTe, SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe,
PbSTe, SnPbS, SnPbSe, SnPbTe SnPbSSe, SnPbSeTe or SnPbSTe；IV races semiconducting compound is Si,
Ge, SiC or SiGe；The nuclear shell structure quantum point is II-VI race of the periodic table of elements, III-V race, IV-VI race or IV
Race's semiconducting compound is core, with CdSe, CdS, ZnSe, ZnS, CdO, ZnO, SiO2In one or more nucleocapsid knots for shell
Structure quantum dot.
Quantum dot in the present invention, but can be described as it is nanocrystalline, it is a kind of to be made of II-VI group or iii-v element
Nano particle.The grain size of quantum dot is typically in the range of between 1~10nm, since electrons and holes are by quantum confinement, continuous energy band
Structure becomes the discrete energy level structure with molecular characterization, and fluorescence can be emitted after being excited.The emission spectrum of quantum dot can lead to
Crossing the size for changing quantum dot and chemical composition makes its emission spectrum cover entire visible region.Have in the step 2
As long as the quantum dot of different fluorescent characteristics has different launch wavelengths, in order to make the quantum dot fluorescence on Quick Response Code carrier
Colour circle can clearly recognize differentiation under ultraviolet light, and in selection, selection launch wavelength difference larger quantum point as possible is formed clearly
Clear distinguishable quantum dot fluorescence colour circle.The quantum dot with different fluorescent characteristics can be that same composition, different-grain diameter are big
Small quantum dot can also be same particle size size, the different quantum dots formed, or different compositions, different-grain diameter size
Quantum dot.
Quantum dot ink is loaded in Quick Response Code by way of printing, air brushing, coating dipping or transfer in the step 3
On mark.
Double anti-forge function of the present invention can be realized by following form：
First weight is anti-fake：
Quick Response Code being loaded into substrate itself contains anti-counterfeiting information, it is seen that under light, by two-dimensional code scanning device to two dimension
Code is scanned, and reads information to realize that the first weight is anti-fake.
Second weight is anti-fake：
Under ultraviolet excitation, quantum fluorescence colour circle of the invention has different colour circle width and interannular away from making this hair
Bright Quick Response Code can regard one-dimensional bar code as on arbitrary radial direction.The one-dimension code is read by bar code scanner technology,
One-dimension code end message is obtained, specific identification information is obtained；
Under ultraviolet excitation, the optical parameter of quantum dot fluorescence colour circle is read using photoelectric scanning device, utilizes quantum
Point can emit the characteristic of fluorescence after being excited, make the Quick Response Code of the present invention that can regard one-dimensional color-bar as on arbitrary radial direction
Shape code.The optical parameter is converted by coding rule, obtains specific identification information；
The mark of the optical parameter code conversion of described second heavy anti-fake middle one-dimension code end message and quantum dot fluorescence colour circle
It can also be progressive relationship that knowledge information, which can be coordination,.
Compared with the prior art, the invention has the advantages that：
1. the present invention improves the anti-counterfeit capability of mark；The present invention is bridge by quanta point material so that ordinary two dimensional
Code has height antiforge function, the joint to realize Quick Response Code and one-dimensional bar code anti-fake.
2. the present invention can obtain more code information carrying breaths, the information reserves of bar code are improved；The present invention is with quantum
The information content of the variation of point launch wavelength, anti-counterfeiting mark load is also continuously increased, therefore the information that anti-counterfeiting mark is loaded contains
Amount can control the composition and grain size of quantum dot according to actual needs.
3. the quantum dot fluorescence colour circle of the present invention has wide excitation spectrum and narrow emission spectra.Just using same excitation light source
It can be achieved to synchronize detection to the quantum dot of different-grain diameter, thus can be used for multi-color logo, be greatly promoted fluorescent marker
Application.Compared to traditional organic fluorescent dye there is relatively narrow excitation wavelength range, different fluorescent dyes to usually require
The exciting light of multi-wavelength excites, this brings many inconvenience to actual research work.In addition, quantum dot fluorescence of the present invention
Colour circle has narrow and symmetrical fluorescence emission peak, and trailing phenomenon unobvious, color quantum point fluorescence colour circle is in same excitation light source
Under to be not easy to occur spectrum overlapping.
4. the double anti-forge mark of the present invention has good photochemical stability, and fluorescence lifetime is long under excited state,
Having simultaneously in the present invention has that double anti-fraud functional identification method is simple for process, operability is strong, it is extensive to may be implemented
Production.
Description of the drawings
Fig. 1 is the pattern in 2 D code being loaded on target product.
Fig. 2 is that quantum dot fluorescence colour circle of the present invention is loaded in the double anti-forge mark formed on Quick Response Code.
Fig. 3 is common one-dimension code figure.
Fig. 4 is the one-dimension code figure that the radial direction of quantum dot fluorescence colour circle is formed.
Specific implementation mode
Below with reference to specific embodiment, technical scheme of the present invention is further elaborated：
Embodiment：
A kind of double anti-forge mark, which is characterized in that glimmering including Quick Response Code and the quantum dot being loaded on Quick Response Code
Photochromic ring, the quantum dot fluorescence colour circle formed under ultraviolet light irradiating state different ring colors, ring width and interannular away from it is concentric more
Cyclic structure, the quantum dot fluorescence colour circle form one-dimensional bar code in arbitrary radial direction.
Wherein, the quanta point material is II-VI race of the periodic table of elements, III-V race, IV-VI race or IV race's semiconductor
Quantum dot made from compound or its corresponding nuclear shell structure quantum point；The nuclear shell structure quantum point is the period of element
II-VI race of table, III-V race, IV-VI race or IV race's semiconducting compound are core, with CdSe, CdS, ZnSe, ZnS, CdO, ZnO,
One or more nuclear shell structure quantum points for shell in SiO2.
A kind of preparation method of double anti-forge mark, specifically includes following steps：
Step 1：Specific Quick Response Code ink is loaded by printing, printing, spraying or laser on substrate；
Step 2：The quantum dot of different fluorescent characteristics is dispersed in organic solvent, transparent ink is added, mixing is equal
The quantum dot ink of different wave length can be emitted by being made after even；In order to enable the quantum dot fluorescence colour circle on Quick Response Code clearly to recognize
It distinguishes, in the selection of quanta point material, launch wavelength is selected to differ larger quantum point material as single iridescent as possible
The material of ring；
Step 3：The loading of anti-fake colour circle；Quantum dot ink is loaded on Quick Response Code mark, ultraviolet light is formed in and swashs
Under hair-like state with different ring colors, ring width and interannular away from quantum dot fluorescence colour circle；
Requirement selection according to the present invention is typically chosen the ink of transparency height, free from extraneous odour based on table print transparent ink,
By taking Orgacon EL ﹣ P ink as an example.It selects grain size for the CdSe quantum dot of 1~2nm, 1~2nmCdSe quantum dots is added
In Orgacon EL ﹣ P ink so that quantum dot is evenly distributed in Orgacon EL ﹣ P ink, there is not allowed that quantum dot is reunited
The case where, in case so that antifalse effect reduces.Orgacon EL ﹣ P ink of the label containing 1~2nm CdSe quantum dots is ink
Sample 1, the ink sample 1 are displayed in blue under ultraviolet light.Similarly, the CdSe quantum dot that grain size is 2~3nm is added
In Orgacon EL ﹣ P ink, Orgacon EL ﹣ P ink of the label containing 2~3nm CdSe quantum dots is ink sample 2, institute
It states ink sample 2 and shows green under ultraviolet light.Similarly, Orgacon is added in the CdSe quantum dot that grain size is 4~5nm
In EL ﹣ P ink, Orgacon EL ﹣ P ink of the label containing 4~5nm CdSe quantum dots is ink sample 3, the ink sample
Product 3 are displayed in red under ultraviolet light.
Ink sample 1, ink sample 2, ink sample 3 are injected into printing machine, by the quantum dot of different luminescent colors
Ink is printed on Quick Response Code expression according to certain width, pitch requirements to form specific colour circle color, specific ring width
With specific interannular away from quantum dot fluorescence colour circle, the quantum dot fluorescence colour circle can form one-dimension code in the radial direction, this
Pressure between technology utilization rider roller and anilox roll, the size and the uniformity that control ink transmits, and utilize distributing ink device net
Pressure between line roller and forme roller by the black Transmit evenly in anilox roll to printing surface, after position fixes, due to
Layer of ink on printing plate, to the printing pressure of cardboard, can be transferred on cardboard by roller like clockwork with roller platen.
The present embodiment is realized in the following way：
First weight is anti-fake：
Quick Response Code being loaded into substrate itself contains anti-counterfeiting information, it is seen that under light, by two-dimensional code scanning device to two dimension
Code is scanned, and reads information to realize that the first weight is anti-fake.
Second weight is anti-fake：
Under ultraviolet excitation, quantum fluorescence colour circle of the invention have different colour circles width and interannular away from making this hair
Bright Quick Response Code can regard one-dimensional bar code as on arbitrary radial direction.The one-dimension code is read by bar code scanner technology,
One-dimension code end message is obtained, specific identification information is obtained；
Under ultraviolet excitation, the characteristic of fluorescence can be emitted after being excited using quantum dot, the Quick Response Code of the present invention is made to exist
It can regard one-dimensional color bar code as on arbitrary radial direction.The optical parameter is converted by coding rule, is obtained
Specific identification information.
Coding rule described in the present embodiment can be converted as follows：
When the present invention is loaded into quantum dot fluorescence colour circle, the fluorescence colour circle by controlling different quantum dot wavelength corresponds to different
Number forms digital coding from inside to outside.In actually detected, luminescent color is corresponded to the quantum dot of different wave length, therefore,
Quantum dot wavelength and digital correspondence will be called color coding by the present embodiment.By taking red, blue, green three kinds of colors as an example, such as table 1
It is shown：
Table 1 encodes for quantum dot photoluminescent color
The number of rings of the quantum dot fluorescence colour circle of the present embodiment is four, then it is as shown in table 2 to form coding from inside to outside：
Table 2 is that quantum dot fluorescence colour circle luminescent color corresponds to digital coding example
On the basis of quantum dot light emitting formed one-dimension code, then pass through the fluorescence pair of the sent out different colours of quanta point material
One-dimension code carries out the color coding of higher level time, the present embodiment by the digital information of color coding and bar code one by one
It corresponds to realize the second heavy anti-counterfeiting mark, as shown in table 3：
Table 3 is the corresponded manner of a kind of digital information of bar code and color coding
Below in conjunction with attached drawing, the present invention is further described：
It is the ordinary QR code of load information as shown in Figure 1, is illustrated in figure 2 the signal of double anti-forge mark of the present invention
Figure, from figure 2 it can be seen that the quanta point material of present invention combination Quick Response Code and different fluorescent characteristics, passes through technology controlling and process shape
At formed under ultraviolet light state with different ring colors, different ring width and different interannulars away from quantum dot fluorescence colour circle,
The quantum dot fluorescence colour circle shape is concentric polycyclic.According to the width of quantum fluorescence colour circle, color and interannular away to its into
Row coding forms the one-dimensional bar code with different colours under excited state, realizes the double anti-forge mark for being difficult to replicate.
Fig. 3 is bar code more common in the market, and the bar code is directly to be printed using common ink,
It can include end message, but be easy to be imitated.As shown in figure 4, the present invention double anti-forge mark realize one-dimension code and
The performance of Quick Response Code is superimposed, and not only increases the information reserves of bar code, and improve the anti-counterfeit capability of mark.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (6)
1. a kind of double anti-forge mark, which is characterized in that including the Quick Response Code being arranged in substrate and be loaded in Quick Response Code it
On quantum dot fluorescence colour circle, the quantum dot fluorescence colour circle formed under excited state different ring colors, ring width and interannular away from
Concentric polycyclic structures, the quantum dot fluorescence colour circle form one-dimensional color bar code, quantum dot fluorescence in arbitrary radial direction
Optical parameter coding of the colour circle under excited state is corresponding with the digital information of shown one-dimensional bar code.
2. a kind of double anti-forge mark according to claim 1, which is characterized in that the quanta point material is element week
Quantum dot or its corresponding nucleocapsid made from II-VI race of phase table, III-V race, IV-VI race or IV race's semiconducting compound
Quantum dot；The nuclear shell structure quantum point is that II-VI race of the periodic table of elements, III-V race, IV-VI race or IV race partly lead
Body compound is core, with CdSe, CdS, ZnSe, ZnS, CdO, ZnO, SiO2In one or more nucleocapsid quantum for shell
Point.
3. a kind of preparation method of double anti-forge mark, which is characterized in that include the following steps：
Step 1：The loading of Quick Response Code mark；Quick Response Code is arranged in substrate to identify；
Step 2：The preparation of quantum dot ink；The quantum dot of different fluorescent characteristics is scattered in organic solvent respectively, is added saturating
The quantum dot ink that can emit different wave length is made in bright ink after mixing；
Step 3：The loading of anti-fake colour circle；Quantum dot ink is loaded on Quick Response Code mark, is formed under excited state and has
Have different ring colors, ring width and interannular away from quantum dot fluorescence colour circle, the quantum dot fluorescence colour circle can shape in arbitrary radial direction
At one-dimensional color bar code, the number of optical parameter coding and shown one-dimensional bar code of the quantum dot fluorescence colour circle under excited state
Word information is corresponding.
4. a kind of preparation method of double anti-forge mark according to claim 3, which is characterized in that two in the step 1
Code ink is tieed up to be loaded on substrate by printing, printing, spraying or laser.
5. a kind of preparation method of double anti-forge mark according to claim 3, which is characterized in that in the step 2
Quanta point material is II-VI race of the periodic table of elements, III-V race, quantum dot made from IV-VI race or IV race's semiconducting compound or
Its corresponding nuclear shell structure quantum point；The nuclear shell structure quantum point be II-VI race of the periodic table of elements, III-V race,
IV-VI race or IV race's semiconducting compound are core, with CdSe, CdS, ZnSe, ZnS, CdO, ZnO, SiO2In it is one or more
For the nuclear shell structure quantum point of shell.
6. a kind of preparation method of double anti-forge mark according to claim 3, which is characterized in that measured in the step 3
Son point ink is loaded in by way of printing, air brushing, coating dipping or transfer on Quick Response Code mark.
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| EP3293680A1 (en) * | 2016-09-12 | 2018-03-14 | Authentic Vision GmbH | Sheet-like product and method for authenticating a security tag |
| KR101773921B1 (en) * | 2016-12-30 | 2017-09-12 | 주식회사 멀티코시 | Barcode |
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| CN109376832B (en) * | 2018-12-21 | 2023-06-27 | 北京印刷学院 | Triple anti-counterfeiting two-dimensional code embedded with anti-counterfeiting mark image and digital fluorescent image |
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