Invention content
In view of the above-mentioned drawbacks in the prior art, the present invention provides a kind of security article, the safety design of the security article
Including at least two tools, there are two the regions of the different characteristics of luminescences, therefore have the characteristics that concealment height and easy to detect.
The present invention also provides the detection methods of above-mentioned security article, are discerned the false from the genuine using the detection method, have operation side
Just the characteristics of.
The present invention also provides the detecting systems for implementing above-mentioned detection method, can be to remaining static and moving shape
The security article of state carries out true and false detection.
To achieve the above object, present invention firstly provides a kind of security article, it is provided with display on the security article and shines
The safety design of characteristic, the safety design include at least one first area and at least one second area, wherein:
First area can be shone by infrared light or ultraviolet excitation, but anti-counterfeiting information cannot be written by ultraviolet light;
Anti-counterfeiting information can be written in second area by ultraviolet light, and only after anti-counterfeiting information is written by ultraviolet light, Neng Goujin
One step is shone by infrared ray excited.
According to security article provided by the present invention, safety design include have the different characteristics of luminescences first area and
Second area, wherein:
Anti-counterfeiting information cannot be written in first area by ultraviolet light, i.e. first area is the security information picture and text of not writeable function
Region, cannot be in storage energy under ultraviolet light irradiation, but under ultraviolet light or Infrared irradiation, can generate transmitting light;
Anti-counterfeiting information can be written in second area by ultraviolet light, i.e. second area is the safety with read-write function
Information image-text area can get up the energy stores of ultraviolet light under ultraviolet light irradiation, realize information write-in, and further
Using infrared ray excited, the energy of storage can be released, to generate transmitting light, realize the reading of information.But if
Anti-counterfeiting information is not written by ultraviolet light in advance, then cannot be shone by infrared excitation.
In this way, the first area and second area in safety design have the above-mentioned different characteristics of luminescence, therefore can be mutual
For control the coding letter of the safety design can be accordingly obtained by carrying out Infrared irradiation and ultraviolet light to safety design
Breath, and then by the situation of change of coding information, determines the true and false of security article, thus the security article have concealment height and
Feature easy to detect.
Specifically, above-mentioned coding information, can usually be indicated with " 0 " and " 1 ", shine (being able to detect that luminous signal) note
For " 1 ", luminous (luminous signal is not detected) is denoted as " 0 ".If can be shone by infrared ray excited than first area, simultaneously
Anti-counterfeiting information is not written by ultraviolet light in advance in second area, then under Infrared irradiation, the coding information of first area be " 1 " and
The coding information of second area is " 0 ", and the coding information of safety design is " 10 ".
It is appreciated that above-mentioned ultraviolet light should have certain luminous intensity, with can be when irradiating second area, ultraviolet light
At least partly energy can be stored by second area, and subsequently use it is infrared ray excited when, second area can be swashed
Hair shines.Therefore, the ultraviolet light contained in common daylight is obviously unsatisfactory for the requirement of above-mentioned ultraviolet light.Correspondingly, common day
Infrared light contained in light cannot similarly meet the requirement of above-mentioned infrared light, and this eliminates security articles in common daylight
Possibility with the above-mentioned characteristics of luminescence under environment.Meanwhile also so that the true and false detection of security article need to be by certain equipment side
It can realize, to ensure that the concealment of security article.
In specific implementation process of the present invention, the quantity of first area and second area can be according to practical need in safety design
Reasonable setting, such as first area and second area quantity is asked to be two and be arranged alternately, then in these cases, accordingly
Coding information is respectively " 1010 ".
Above-mentioned first area and second area can be excited by the light (infrared light, ultraviolet light) of specific wavelength to shine, especially
Refer to that generated transmitting light is visible light under the irradiation of the light with specific wavelength.Wherein first area and second area
The wavelength of generated visible light may be the same or different.
Specifically, the wavelength of above-mentioned infrared light is more than or equal to 800nm, such as 980nm;The wavelength of above-mentioned ultraviolet light is less than
390nm, such as 365nm, for another example 254nm.
The present invention does not do special limit for the quantity and relative position relation of first area in safety design and second area
It is fixed, the rational design of the factors such as anti-fake demand and aesthetics can be considered.Specifically, first area is preferably able to second area
It is interrelated to form an entirety, such as can connect even it is tangent, naturally it is also possible to do not connect.
Specifically, first area only can send out visible light by infrared ray excited;Or it can only be sent out by ultraviolet excitation
Go out visible light;Or visible light can either be sent out by infrared ray excited, and can visible light be sent out by ultraviolet excitation.
Specifically, it includes fluorescent material to form above-mentioned first area material therefor, or including infrared up-conversion material,
Can also include fluorescent material and infrared up-conversion material simultaneously.
Wherein, fluorescent material is that the material for sending out visible light is presented under ultraviolet light.It is generally acknowledged that in ultraviolet lighting
When penetrating, into excitation state after the luminous energy of fluorescent material absorption ultraviolet light, and within a very short time (such as 10-9-10-7In second) it moves back
Visible light is excited and sent out, and once stops incident light, luminescence phenomenon also disappears at once immediately.
The present invention is not specially limited fluorescent material used, can select inorganic fluorescent material, especially rare earth
Fluorescent material, such as with aluminate (SrAl2O4、CaAl2O4、BaAl2O4) be used as matrix, using rare earth lanthanide (Eu, Sm,
Er, Nd) it is used as activator.Alternatively, organic polymer fluorescent material or organic molecule fluorescent material can also be selected.It is above-mentioned glimmering
Luminescent material can refer to pertinent literature and voluntarily prepare, and can also be commercially available.
Infrared up-conversion material is a kind of in the infrared ray excited lower luminescent material that can send out visible light, also known as instead
Stokes luminescent materials.The present invention does not do infrared up-conversion material used and especially limits, and can be this field routine
Infrared up-conversion material, such as fluorochemical materials system, such as Cs2GeF6:2%Re4+, Nd for another example3+:Pb3M3F19(its
Middle M is Al, Ti, V, Cr, Fe, Ga).Above-mentioned infrared up-conversion material can refer to pertinent literature and voluntarily prepare, also can be by commercially available
It obtains.
Above-mentioned fluorescent material and infrared up-conversion material can be conventionally formed by this field on security article, obtained
Reasonable disposition is carried out to first area, such as by the components such as fluorescent material and solvent, then passes through the side such as spraying, spin coating, showering
Formula is coated in security article surface, waits for solvent volatilization or through dry solidification, forms first area.
In specific implementation process of the present invention, first area is to print to obtain using the first ink, wherein the first ink selects
From at least one of fluoresent printing ink and infrared up conversion ink.That is, first area be by fluoresent printing ink,
The mixed ink of infrared up conversion ink, even fluoresent printing ink and infrared up conversion ink prints on the substrate to be obtained;
First area can also be divided into two or more subregions, wherein subregion be respectively by above-mentioned three kinds of ink at least
Two kinds of printings obtain.
For example first area is entirely to print to obtain by fluoresent printing ink or infrared up conversion ink;Firstth area for another example
One sub-regions in domain are to print to obtain by fluoresent printing ink, and another subregion is to print to obtain by infrared up conversion ink;
Entire first area is to print to obtain by the mixed ink of fluoresent printing ink and infrared up conversion ink for another example;Also such as
One sub-regions of first area are to print to obtain by above-mentioned mixed ink, and another subregion is printed by fluoresent printing ink
It arrives.
The factors such as material, color and printing technology according to stock, above-mentioned fluoresent printing ink can be silk-screen fluorescence
Ink, gravure fluorescent ink, offset printing fluorescent ink, convex print fluorescent ink and flexo fluorescent ink etc. can specifically select at present
Commercialized Antiforge fluorescent ink, such as concealed fluorescent ink are in water white transparency after being completed for printing, and in ultraviolet light
Under take on a red color, the colors such as green, yellow, brown, blue;Or colored fluorescent ink can also be selected, coloring pigment therein
For the common pigments in fluorescent ink, such as permanent bordeaux, permanent violet, phthalocyanine blue, dark green.
Equally, above-mentioned infrared up conversion ink can specifically select common Antiforge infrared ink currently on the market, tool
Body formula and preparation method are known technology, and the present invention is not specially limited and excessively describes.
The above-mentioned mixed ink being made of fluoresent printing ink and infrared up conversion ink, it is actually a kind of ultraviolet red
Outer multi-antiforge ink, either by ultraviolet light or Infrared irradiation, first area can be excited it is luminous, therefore have
There is dual antifalse effect.
The stock can be specifically papery, can also be the plastic materials such as PVC, PP, PET, or even can also be glass
Glass material, can also above two material mixing.
Above-mentioned second area, further by Infrared irradiation, can generate transmitting light after in advance by ultraviolet light;But
If being in advance directly to use Infrared irradiation not by ultraviolet light, then cannot excite luminous.
Specifically, above-mentioned second area sends out visible light while by ultraviolet light, and stopping ultraviolet light
Afterwards, the afterglow intensity of the visible light is weak in 2 seconds to less than 0.32mcd/m2.After stopping ultraviolet light, the visible light
In 2 seconds it is weak to naked eyes it is invisible, generally in 0.2 second, such as in 10-30ms it is weak to be less than 0.32mcd/m2, so that
In presence of the human eye fundamental sensation less than twilight sunset.
Therefore, the luminous persistence of second area is very short, 2 seconds even 0.2 second in this way after removing ultraviolet light,
Further such as 10-30ms, the twilight sunset for emitting light disappears, you can Infrared irradiation is further used, to make the security article also
Have the advantages that detection is quick.
Further, second area is after by ultraviolet light write-in anti-counterfeiting information (irradiation), further by Infrared irradiation when,
Generated transmitting light is visible light, persistently uses Infrared irradiation, and the visible light is weak in 60 seconds to less than 0.32mcd/
m2。
Specifically, the characteristics of luminescence of above-mentioned second area is provided by photostimulated phosphor, that is, formed used in second area
Material includes photostimulated phosphor.
Photostimulated phosphor (Photostimulated Luminescence, PSL) has trap level appropriate,
It, can be by the carrier capture in host material in trap level, and with relatively steady state under the exciting irradiation of ultraviolet light
It preserves, is then encouraged again with the light of its all band (such as infrared light), visible light can be released with shortwave wavelength, be substantially
The carrier in trap (such as electronics or hole) and the load at the centre of luminescence in lattice dot matrix are captured in host material
The compound process of stream.
Other than host material, photostimulated phosphor must also have two fundamentals:The centre of luminescence and trap.One
As for, in doped matrix material micro rare earth ion (transition metal ions) become the centre of luminescence.And trap situation is opposite
Complexity, such as the intrinsic defect of host material can become defect center, or can also be by mixing another rare earth ion
(transition metal ions) in host material to introduce defect center;Another coactivator ion, which can also be added, makes matrix
Material generates trap.
In the present invention, the host material of photostimulated phosphor includes but not limited to silicate, phosphate, aluminate, tungsten
At least one of hydrochlorate, germanate, gallate, molybdate, garnet, stannate and zirconates, such as but simultaneously without limitation,
Stronitum stannate, calcium stannate, magnesium stannate, strontium aluminate, strontium silicate, calcium zirconate, germanic acid calcium or other materials;The centre of luminescence is rare earth ion
At least one of with transition metal ions, including but not limited to Eu2+、Tb3+、Sm3+、Sb3+And Mn2+At least one of.
Above-mentioned photostimulated phosphor can store energy when by ultraviolet light, that is, anti-fake letter is written
Breath;And further by it is infrared ray excited when, energy can be released in the form of visible light, to make second area
With the unique characteristics of luminescence.
Further, defect center can also be introduced in host material, specifically, the ion of codope be rare earth from
Son, including but not limited to La3+、Dy3+、Tm3+、Sm3+、Yb3+And Gd3+At least one of Deng.
Specifically, photostimulated phosphor used can be《Wang Zhilong, Zheng Guisen, king's generation, which is admired, waits novel electron captures
Type optical memory material Sr2SnO4:Sb3+Luminescent properties study Acta Physica Sinicas, 2012,61 (12):511-516.》In it is recorded
Sr2SnO4:0.5%Sb3+;Or can also be《Qin Qingsong, horse Xinlong, the novel optical memory material Sr of the such as Shao Yu2SnO4:Tb3 +,Li+Synthesis and its infrared up conversion optical stimulated luminescence performance research Acta Physica Sinicas, 2012,61 (9):464-467.》In
Recorded Sr2SnO4:0.5%Tb3+, 0.5%Li+;Can also be《Xia Liu,Jiahua Zhang,Xia Zhang et
al.Strongly enhancing photostimulated luminescence by doping Tm3+in Sr3SiO5:Eu2 +.Optics Letters,2013,38(2):148-150.》Mentioned in Sr2.99-xSiO5:0.01Eu2+,xTm3+(x=
0.0001-0.04);It can also be《Ming Li,Xue Yu,Xuhui Xu et al.Color Variation Between
PSL and PL in CaAl2Si2O8:Tb3+with the Assistance of Trap Level.Journal of the
American Ceramic Society,2015,98(7):2008-2010.》Mentioned in Ca0.965Al2Si2O8:0.5%
Tb3+, 3%Dy3+。
The photostimulated phosphor reported in above-mentioned document is usually to be used as information optical memory material, synthesizes item
Part has considered critical, and the photostimulated phosphor can not be commercially available, therefore is formd effectively to imitator
Technical barrier.
Photostimulated phosphor provided by the present invention, host material are the change of physical chemistry and good thermal stability
Object is closed, making security article similarly has the characteristics that materialization patience is good.Also, since traditional sulfurized alkaline earth metal is not used
Object also avoids conventional vulcanized object host material and easily decomposes to lead to the problem of sulphur containing harmful components as host material, therefore has
Have the characteristics that environmental-friendly.
The present invention is not done especially for how above-mentioned photostimulated phosphor is processed to obtain the process of second area
It limits, the arbitrarily acceptable mode in this field can be used and carry out.In specific implementation process of the present invention, second area is by second
Ink prints to obtain, which includes the component of following parts by weight:
40-60 parts of binder, 15-30 parts of filler, 1-5 parts of wax, 0-3 parts of dormant oil, 1-3 parts of surfactant, drier 1-3
Part and it is photostimulated phosphor 15-20 parts described.
By the reasonable disposition between said components, it can not only make anti-forgery ink that there is good printing suitability, packet
It includes with good mobility, adherence, stickiness and drying property, so as to obtain ideal printed patterns, and the printing figure
Case, which is formed by second area, has the above-mentioned characteristics of luminescence.
Specifically, photostimulated phosphor can be dispersed in a manner of pigment in each anti-forgery ink system, inventor
The study found that if the too high levels of photostimulated phosphor, can not only increase the cost of material and processing cost of anti-forgery ink, and
And the characteristics of luminescence and be not improved, while the printing suitability of anti-forgery ink can be also influenced, for example can cause ink that can not pass
The problems such as passing;Conversely, if the content of photostimulated phosphor is too low, it will cause subsequent detection difficulties.Under normal circumstances, with this
The mass content of the weight meter of anti-forgery ink, photostimulated phosphor is 10-30%, is further 15-30%, such as 15-
20%.
Other components in above-mentioned second ink, such as binder, filler, wax, dormant oil, surfactant and drier are equal
The common material of institute in ink configuration process can be selected, for example selects polyurethane resin, phenolic resin or polyurethane-modified
Alkyd resin etc. is used as binder, can specifically be reasonably selected and be configured according to the type of actual printing ink.
Under normal circumstances, the type of above-mentioned second ink may include offset ink, gravure ink, letterpress printing ink, silk-screen
Then second ink can be printed on stock surface by ink, flexo ink etc. by the mode of printing to match therewith, with
The stock completely or partially is covered, to form second area.Wherein the stock can be papery, can also be PVC,
The plastic materials such as PP, PET, or even can also be the mixing of glass material or above two material.
By regarding above-mentioned first ink and the second ink as the different zones that pairing ink is printed on same stock
To obtain safety design.The safety design under the irradiation of infrared light and ultraviolet light, obtains corresponding coding information successively, with verification
The true and false of security article.Therefore, which has the advantages that easy to detect, concealment is high.
The concrete form of security article provided by the present invention can be bill (such as banknote, check, tax invoice, generation
Gold note, deposit receipt, bank draft, commercial draft etc.), card card (identity card, employee job card, property ownership certificate, passport, prize-winning certificate, marriage certificate
Book, English Certificates, computer grading certificate etc.), file (contract documents and forwarding document, costoms forms etc. prove text
Part etc.) and lottery ticket, admission ticket etc. need to carry the security article of anti-counterfeiting information.
Specifically, variety classes that can be according to security article and anti-fake demand, safety design is arranged in a corresponding manner
On security article, for example it is arranged in safety in the form of pad pasting, labeling, joint strip, label, trade mark, safety line or packaging material
On product.
The present invention also provides the detection methods of above-mentioned security article, include the following steps:
Using the safety design on Infrared irradiation security article to be detected, and obtain generated first coding information;
After stopping Infrared irradiation, ultraviolet light safety design is used;
After stopping ultraviolet light, using Infrared irradiation safety design, and generated second coding information is obtained;
Compare the first coding information and whether the second coding information is identical.
Specifically, the wavelength of above-mentioned infrared light is more than or equal to 800nm, such as 980nm;The wavelength of above-mentioned ultraviolet light is less than
390nm, such as 365nm, for another example 254nm.
It is appreciated that the wavelength of infrared light used should keep identical twice, in favor of to produced by Infrared irradiation twice
Coding information be compared, to discern the false from the genuine.
According to detection method provided by the present invention, accordingly produced by comparing front and back Infrared irradiation safety design twice
Difference between raw the first coding information and the second coding information, you can judge the true and false of security article to be detected, therefore should
Detection method has the advantages that easy to operate.
Specifically, if the first coding information is identical with the second coding information, which is false, otherwise, then should
Security article is true.
In specific implementation process of the present invention, the irradiation time of above-mentioned ultraviolet light is usually no more than 1min, typically not greater than
10 seconds, such as 5 seconds, 4 seconds, 3 seconds, 2 seconds or 1 second;The irradiation time of infrared light is generally also no more than 1min, can generally also control
In 10 seconds;It is general to stop ultraviolet light 2 seconds or so, usually in 0.2 second, such as 10-30ms, you can further use red
Outer light irradiates safety design.To realize " fast charging and discharging ", i.e., either the irradiation time of ultraviolet light, infrared light irradiation when
Between or the time interval between ultraviolet light and Infrared irradiation can be very short, to make the detection of security article
More quickly.
Above-mentioned detection method can sequentially be carried out according to above-mentioned steps, can also be adjusted according to actual demand, at this
It invents in a specific implementation mode, the detection method of security article in turn includes the following steps:
1) ultraviolet light safety design is used;
2) after stopping ultraviolet light, using Infrared irradiation safety design, and generated second coding information is obtained;
3) safety design on Infrared irradiation security article to be detected is reused, and obtains generated first coding
Information;
4) compare the first coding information and whether the second coding information is identical.
As noted previously, as security article provided by the present invention can realize " fast charging and discharging ", therefore in step 3),
When reusing Infrared irradiation, generated coding information also should with the coding information different from step 2), therefore still
It is old to judge the true and false.
It is appreciated that detection method provided by the present invention, can be applied not only to the safety system to be detected of stationary state
Product, and the security article to be detected being kept in motion is equally applicable.
The present invention also provides a kind of for implementing the detecting system of above-mentioned detection method, including ultraviolet source, infrared light supply,
Detector and logic control device, wherein
Ultraviolet source and infrared light supply are respectively used to send out ultraviolet light and infrared light;
The detector is for detecting the transmitting that the safety design is sent out in Infrared irradiation safety design twice
Light, and it is respectively formed detectable signal;
The logic control device is used to accordingly generate the first coding information and the according to the detectable signal being respectively formed
Two coding informations, and compare the first coding information and whether the second coding information is identical.
Specifically, the exciting power that can usually control ultraviolet source is less than 6W, such as 3W or 4W, such as Japan Nicha
The UV LED flashlights (365nm, 3W) of company or Beijing Tian Mai perseverance aura source company hand-held ultraviolet lamp (4W,
254nm);The exciting power of usually control infrared light supply is less than 1W, such as 200-300mW, such as Changchun NPD projects photoelectric technology
The 980nm infrared light supplies (300mW) of Co., Ltd.
The present invention is not specially limited detector used, can be photodetector commonly used in the art, general
Including optical filter, emit light caused by safety design to detect, and form detectable signal.
Logic control device can specifically include signal receiving module and logic judgment module.Wherein signal receiving module is used
In reception detectable signal;Logic judgment module is used to the detectable signal being converted to corresponding coding information, encodes more twice
Whether information is identical, and provides comparison result
Further, above-mentioned logic control device can be also used for the work of control infrared light supply and ultraviolet source, including
But it is not limited to control irradiation time and irradiation sequence.Correspondingly, the logic control device can also include program controling module,
Operation principle is roughly the same with current programmable controller, built-in control program, with control control infrared light supply and ultraviolet light
The irradiation time and irradiation sequence in source etc..
Said detecting system can to remain static and the security article of motion state carry out true and false detection.
The present invention also provides another detecting systems, including infrared module, ultraviolet module, Logic control module, wherein:
Infrared module obtains safety design and accordingly sends out for successively carrying out Infrared irradiation to safety design twice
Transmitting light, to be respectively formed the first coding information and the second coding information;
Ultraviolet module is used to carry out ultraviolet light to safety design;
Logic control module is used to compare the first coding information and whether the second coding information is identical, to judge security article
Or the true and false of security article.
The detecting system is particularly suitable for the detection of the security article of motion state.It is above-mentioned red to be further conducive to detection
Outer mold piece may include the first infrared module and the second infrared module, wherein the first infrared module for sending out infrared light supply first
To irradiate safety design, and the transmitting light sent out according to safety design, the first coding information is formed;Second infrared module is used for
Infrared light supply is sent out after ultraviolet module is stopped to irradiate safety design, and the transmitting light sent out according to safety design,
Form the second coding information.
It is appreciated that the setting sequence of the first infrared module, the second infrared module and ultraviolet module should be with security article
Subject to the direction of motion, for example direction of motion level is to the right, then can respectively distinguish the first infrared module and the second infrared module
Arranged on left and right sides in ultraviolet module is set, in this way in the motion process of security article, successively by the red of the first infrared module
The irradiation of the infrared light of outer light, the ultraviolet light of ultraviolet module and the second infrared module.
The detecting system judges the true and false of security article in accordance with the following steps:
1, the first infrared module carries out Infrared irradiation to safety design, and obtains the lower safety design of infrared light supply irradiation
Emit light, forms the first coding information;
2, ultraviolet module carries out ultraviolet light to safety design;
3, the second infrared module carries out Infrared irradiation to safety design, and obtains the lower safety design of infrared light supply irradiation
Emit light, forms the second coding information
4, the true and false of security article is judged by Logic control module:If the first coding information and the second coding information difference,
Then security article is true;If identical, security article is false.
Further, above-mentioned Logic control module is additionally operable to the work of control infrared module and ultraviolet module, including but not
It is limited to control job order and the working time of infrared module and ultraviolet module.
Security article provided by the invention, there are two mutual first area and second areas for safety design tool, wherein
First area is the security information image-text area of not writeable function, and second area is the security information picture and text for having read-write function
Region.It is whether identical according to coding information of two regions under front and back Infrared irradiation twice, it can determine whether the security article
The true and false, therefore the security article has the characteristics that easy to detect and concealment is high, while can also realize quick detection.Also, it should
Security article not only has good chemical stability and thermal stability, but also has the characteristics that environmental-friendly.
The detection method of security article provided by the invention, have the advantages that it is easy to operate and efficient, be conducive to practical application
And popularization.
Detecting system provided by the present invention, instrument all can be this field routine instrument device, be conducive to safety
The true and false of product detects, and the security article of motion state or stationary state is applicable in.
Another detecting system provided by the present invention, it is simple in structure, it is particularly suitable for the security article being kept in motion
The true and false detection.