CN101225265A - False-proof ink having obvious contrast for absorption/reflection of different-waveband infrared lights - Google Patents
False-proof ink having obvious contrast for absorption/reflection of different-waveband infrared lights Download PDFInfo
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- CN101225265A CN101225265A CN 200710062742 CN200710062742A CN101225265A CN 101225265 A CN101225265 A CN 101225265A CN 200710062742 CN200710062742 CN 200710062742 CN 200710062742 A CN200710062742 A CN 200710062742A CN 101225265 A CN101225265 A CN 101225265A
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Abstract
The invention relates to an anti-counterfeit ink, which can absorb and reflect infrared light of different wave bands with evidence contrast. The ink at least comprises an infrared material, which has different absorption and reflection intensities to infrared light between the wave bands of 720 nanometers and 2500 nanometers; the infrared material has the infrared property that the absorption intensities to infrared lights of different wavelength can differ at zero point two or more. Besides providing anti-counterfeit character of higher tech, the ink has the advantages of steady chemical property and good tolerance. The anti-counterfeit ink can be mixed, dispersed and stirred with the ink binding material, the infrared material and the ink addition agent, and then rolled into all kinds of printing inks with open ink processing method that agree with the printing index. The ink can be used on valuable paper cards and other anti-counterfeit elements that need to be printed with anti-counterfeit information or label; the ink also can be used on the surfaces of plastic, metal-based material, safety line, holographical film, and dealuminized film to make anti-counterfeit elements.
Description
Technical field
The present invention relates to a kind of anti-forgery ink, particularly a kind of Antiforge infrared ink that different-waveband infrared absorption/reflection strength is had obvious contrast, promptly to the absorption intensity height of some or several specific band infrared lights and to the high anti-forgery ink of other waveband infrared reflection strength and its production and application mode, the anti-forgery ink of making as pigment of inorganic infra-red material particularly with described infrared signature.
Background technology
Anti-forgery ink is a range of application class anti-counterfeiting product very widely, especially uses very general in the printing of (also claiming Security element or printing) of products such as banknote, valuable bills.Anti-counterfeiting technology content for the Security element that improves printing increases counterfeit difficulty, and researching and developing new anti-forgery ink is one of important step of this area.
A kind of anti false authentication method is disclosed among the EP0340898, this method is to make first identification symbol that utilizes first kind of printing ink to be printed on the article comprise the colourless or tinted material that has strong absorption to infrared, second of chromatography comprises a kind ofly to the infrared tinting material that does not have sorption then, and requires the upper end of second kind of different ink printings to the first kind of printing ink.
WO 03/038001 discloses a kind of two groups of ink composites that printing ink is formed by different colours.Contain tinting material in first group of printing ink and the compound of absorption peak is arranged at a certain wavelength of near infrared place, contain the tinting material with first group of printing ink infra-red material similar performance in second group of printing ink, realize false proof by detecting its specific infrared characteristic.
In the at present common Antiforge infrared ink, normally adopt phthalocyanines to be used as the infrared absorption component, its maximum absorption scope is at 700-1200nm.For example, EP0553614 has reported that phthalocyanines dye, naphthalene phthalocyanine, nickel mercaptan synthetics, the cinnabar mixture of aromatic amine, methine dyes can be used as infrared absorbing material and be applied to printing-ink.484018 of EP disclose a class phthalocyanine compound that has the maximum absorption effect in the 680-900nm scope.It can absorbing wavelength be in the 700-1500nm scope that EP 408191 has related to, particularly the substituted phthalocyanine compounds of 725-1100nm.EP134518 then discloses a kind of naphthalene phthalocyanine compound, and is the strongest to the infrared Absorption in the 750-900nm.
The problem of the infrared absorption printing ink existence of using at present mainly contains: functional pigment composition wherein is organic infrared absorbing material (for example above-mentioned phthalocyanines material), its chemical property is stable inadequately, be not suitable for the Application Areas that patience is had relatively high expectations, the research that can see also mainly concentrates on to be sought and transformation phthalocyanines absorbing material, makes great efforts to obtain the more stable product of chemical property and satisfies demands of applications; On the other hand, the antiforge function of present various infrared absorption printing ink all is the infrared absorption characteristic that is confined under the specific band, and not mentioned contrast to different-waveband infrared absorption/reflection strength, the tamperer obtains similar infrared absorbing material easily, thereby reduced the forgery difficulty, can not satisfy some false proof demanding product and fields.
Summary of the invention
At the problems referred to above, the technical problem underlying that institute of the present invention desire solves provides the higher Antiforge infrared ink of a kind of anti-counterfeiting technology content, has the inorganic infra-red material of special infrared property as functional pigment by use, make printing ink have obvious contrast to different-waveband infrared absorption/reflection strength, thereby more difficult forgery.
The anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast provided by the present invention refers to that this printing ink is to some or several specific band infrared Absorption intensity height, and to other waveband infrared reflection strength height, utilize Security element that this ink printing makes use with the field of circulation in can utilize it that different feature of different-waveband infrared absorption/reflection strength is judged the true and false.
The false proof principle of anti-forgery ink provided by the invention is to utilize infra-red material in the printing ink to the otherness of different-waveband infrared absorption/reflection, observe by instrumentation, can find to adopt printed being marked under some specific band of printing ink of the present invention to absorb as seen, other wave band reflects down and invisible.Utilize Security element that anti-forgery ink printing of the present invention makes use and the field of circulation in, with this anti-forgery ink to the different character of different-waveband infrared absorption/reflection strength as an anti-counterfeiting characteristic, can avoid common infrared printing ink only to detect certain wavelength and be beneficial to the drawback of being discerned and forging, anti-counterfeiting power is strengthened greatly by the fake producer.
Anti-forgery ink provided by the invention is a kind of Antiforge infrared ink that different-waveband infrared absorption/reflection strength is had obvious contrast, at least comprise during this printing ink is formed and a kind ofly exist the infra-red material of difference, this infra-red material to have absorption intensity under two or more different infrared bands to absorption intensity different-waveband infrared in the 720-2500nm scope to differ infrared characteristic more than 0.2 or 0.2.
By means of employed infra-red material with above-mentioned infrared characteristic in the printing ink, anti-forgery ink embodiment provided by the invention is that common homochromy material is not available to the infrared signature that different-waveband infrared absorption/reflection has obvious contrast.By selection and use to infra-red material, printing ink of the present invention is with more difficult forgery, because the tamperer must find a kind of simultaneously to the infrared Absorption and the reflection of different-waveband, and place wave band and anti-forgery ink feature identical materials of the present invention, have great difficulty undoubtedly, therefore strengthened anti-counterfeiting power greatly.
There is difference in preferably described infra-red material to the absorption intensity of different wave length infrared light in the wavelength region of 750nm to 2000nm, and can have absorption intensity under two or more different infrared bands and differ infrared characteristic more than 0.3 or 0.3.
The infra-red material that is applicable to anti-forgery ink pigment of the present invention can be any suitable inorganic infra-red material, as long as they have the infrared signature different to different-waveband infrared absorption/reflection strength.Anti-forgery ink of the present invention is common not available with color ink to the infrared signature that different-waveband infrared absorption/reflection has obvious contrast, in Fig. 1 infrared spectrum, curve A is represented the Infrared Reflective Spectra with the homochromy common ink mark of curve B, curve B is represented the Infrared Reflective Spectra that different-waveband infrared reflection is had the infrared printing ink mark of obvious contrast of the present invention, can see, the absorption that is marked in the 750-1800nm wave band of curve A does not have significant difference, and being marked at of curve B absorbs under the 750-850nm infrared band by force, and the infrared band behind 1000nm is next to be to be reflected into the master.
In addition, this infrared signature that different-waveband infrared absorption/reflection is had an obvious contrast can judge and differentiate by the respective detection device, realizes machine-readablely, and testing process is simple, and effect is obvious.
Infra-red material as ink pigment of the present invention, the inorganic, metal oxide of preferred its main component for becoming through high-temperature calcination, because the chemical property of inorganic, metal oxide is stable, acid and alkali-resistance, anti-clorox, anti-soap, anti-washing powder, heat-resisting water, organic solvent-resistant, light fastness are good.
Preferably, it is 8%-80% that its content of inorganic infra-red material that comprises at least in the anti-forgery ink of the present invention accounts for ink by weight percentage ratio, preferred 10%-50%, and the experience molecular formula of this inorganic infra-red material is A
xB
yC
zD
m, in the formula:
X is that 1-3, y are that 1-5, z are 0-2, m 〉=3;
A in this empirical formula is selected from least a in metallic elements of ferrum, cobalt, nickel, manganese and the tin, B is selected from least a in metallic element chromium, copper, tungsten, antimony, aluminium, titanium, zinc, lithium and the strontium, C is selected from least a in metallic element calcium, magnesium, sodium, potassium and the barium, D is selected from least a in elemental oxygen, fluorine, chlorine and the sulphur, but comprises oxygen at least.
More preferably, contain at least a and oxygen element in cobalt element, ferro element, manganese element and the nickel element in the inorganic infra-red material of this anti-forgery ink, and contain in chromium element, aluminium element, W elements, zinc element and the titanium elements at least a.
Other color inks that the anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast of the present invention has black, redness, green, yellow and blue five kinds of essential tones and prepares thus.
Behind the infra-red material of having determined as functional pigment, identical with common ink, also contain ink adhesive, ink addition agent and/or solvent in the anti-forgery ink of the present invention, their selection and use all belong to routine techniques.
Wherein ink adhesive can be selected according to the kind of making printing ink, as the ordinary skill in the art, the present invention does not have particular determination, for example, the used oil ink connecting material can be vegetables oil, resol oil, Synolac oil, light sylvic oil, plant oil modified Synolac, or polymeric amide, urethane, polyester, acrylic resin etc.
Ink addition agent comprises siccative (metal-salts such as cobalt salt, zirconates), stand linseed oil, high-boiling point kerosene, wax powder etc.
Solvent comprises ethyl acetate, butylacetate, acetone, butanone, toluene, dimethylbenzene, ethanol, Virahol etc.
The particular case of the element of implementing measure (or base material) as required, the anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast of the present invention can be made into and meets all kinds of printing-inks that printing standard requires, for example flexographic ink, number printing ink, rotogravure printing ink, engraving intaglio printing ink, screen printing ink etc.
Further, also can be as required in described a kind of anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast, add other to other waveband infrared absorption/reflection have obvious contrast infra-red material and/or, add ultraviolet fluorescent material and/or, other anti-counterfeiting characteristics such as infrared up-conversion material and/or magneticsubstance, with additional, compound, strengthen original antiforge function.
Can also contain the conventional material that other configuration printing ink well known to those skilled in the art are used in a kind of anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast of the present invention.
The present invention also provides the described preparation method who different-waveband infrared absorption/reflection is had the anti-forgery ink of obvious contrast, this method comprises mixing, disperse, stirring ink adhesive, infra-red material (pigment) and ink addition agent, be rolled into various printing-inks then, concrete rolling operation can be finished according to meeting the known treated oil method for ink that prints index request.
The infra-red material that is used for anti-forgery ink of the present invention can be by being purchased or any feasible method is synthesized voluntarily and obtained.For example, the raw material that will comprise the oxide compound of selected metallic element and/or carbonate mixes back further processing and obtain meeting empirical formula A of the product of calcining after 1-10 hour in 600 ℃ of-1300 ℃ of scopes
xB
yC
zD
mProduct (implication of each symbol defines as described above), and further can contain the metal fluoride that is used to provide metallic element C, metal chloride or the metal sulfate of 0wt% to 10wt% in the described raw material.Among the previous application CN200610164941.4 that proposes of this case applicant, at least the inorganic compounding pigment that comprises two kinds of metallic elements and oxygen element in a kind of chemical constitution is provided, detected result shows that this inorganic compounding pigment has tangible contrast to different-waveband infrared absorption/reflection strength in infrared light region.Be incorporated herein by reference in this associated viscera above-mentioned application.
The present invention also provides and has utilized the described application of anti-forgery ink in printed security element that different-waveband infrared absorption/reflection is had obvious contrast.
When implementing the printing of Security element, can directly use anti-forgery ink of the present invention to need the printing of information, described Security element comprises that Valued Securities, certificate card, antifalsification label, safety line, false-proof film or other need give the product of anti-counterfeiting information, and printing element can be paper substrate (plate), plastics, metallic substrate surface, polymer materials, holographic pad pasting or dealuminzation film etc.Wherein, described Valued Securities comprise bank note, check, supporting documents, forwarding document, costoms forms, lottery ticket, admission ticket, coupons or deposit receipt etc.
The application of anti-forgery ink of the present invention can comprise that also the pairing of two kinds of described anti-forgery inks is used or the pairing of described anti-forgery ink and homochromy common ink is used.That is, of the present invention to different-waveband infrared absorption/reflection have obvious contrast anti-forgery ink can with homochromy common ink and/or the another kind of homochromy anti-forgery ink pairing use that waveband infrared in addition absorption/reflection is had obvious contrast.
Provided by the invention have the infrared signature of the anti-forgery ink of obvious contrast to different-waveband infrared absorption/reflection, can judge and discriminating by corresponding infrared detector or ultraviolet-visible-near infrared spectrometer etc., thereby realize machine-readable.
The prepared a kind of anti-forgery ink that different-waveband infrared absorption/reflection is had an obvious contrast of the present invention has following advantage:
1, different-waveband infrared absorption/reflection strength is had the infrared signature of obvious contrast, anti-counterfeiting power strengthens greatly, is difficult to copy;
2, the infra-red material of preparation anti-forgery ink of the present invention is an inorganic, metal oxide, and acid and alkali-resistance, anti-clorox, anti-soap, anti-washing powder, heat-resisting water, organic solvent-resistant, light fastness are good;
3, have and to have the multiple application modes flexibly such as homochromy anti-forgery ink (for example metamerism printing ink) pairing use of obvious contrast with homochromy common ink and/or other to different-waveband infrared absorption/reflection, have wide range of applications;
4, can be on the basis of anti-forgery ink of the present invention compound other to waveband infrared absorption/reflection in addition have obvious contrast infra-red material and/or, add ultraviolet fluorescent material and/or, infrared up-conversion material and/or magneticsubstance etc., with additional, compound, strengthen original antiforge function.
5, infrared anti-false feature of the present invention can be read identification with corresponding infrared detector or ultraviolet-visible-near infrared spectrometer etc.
All can understand for those skilled in the art, the absorption intensity of a kind of infra-red material under a certain wavelength is little, and its reflection strength under this wavelength will be higher so.So, the absorption intensity of inorganic infra-red material is changed characteristic description also embody corresponding reflection strength variation characteristic, " absorption/reflection " during term used in the present invention " has obvious contrast to different-waveband infrared absorption/reflection " is construed as the infrared absorption of having described this printing ink simultaneously and the characteristic of reflection.
Description of drawings
Fig. 1 is for having the example explanation of the reflection spectrum of the infrared printing ink mark of obvious contrast and homochromy common ink mark to different-waveband infrared absorption/reflection.Curve A is represented the Infrared Reflective Spectra of homochromy common ink mark among the figure, and curve B represents the infrared reflection of light of different-waveband is had the Infrared Reflective Spectra of the infrared printing ink mark of obvious contrast.
Fig. 2 has the absorption spectrum of the offset printing anti-forgery ink mark of obvious contrast for the absorption/reflection to different-waveband infrared of embodiment 1.
Fig. 3 has the absorption spectrum of the rotogravure anti-forgery ink mark of obvious contrast for the absorption/reflection to different-waveband infrared of embodiment 3.
Fig. 4 is the absorption spectrum that the absorption/reflection to different-waveband infrared of embodiment 4 has the carved gravure anti-fake ink indicia of obvious contrast.
Fig. 5 has the absorption spectrum of the silk screen anti-forgery ink mark of obvious contrast for the absorption/reflection to different-waveband infrared of embodiment 5.
Embodiment
Below describe the beneficial effect that embodiments of the present invention and the present invention program produced in detail by specific embodiment, but but can not be interpreted as practical range of the present invention is constituted any qualification.
Embodiment 1: the offset printing anti-forgery ink that different-waveband infrared absorption/reflection is had obvious contrast
Raw material is formed (weight percent):
Inorganic, metal oxide infra-red material: 40%
Resol oil: 15%
Synolac: 10%
Pearl filler: 32%
Siccative: 1%
High-boiling point kerosene: 2%
Wherein, consisting of of inorganic, metal oxide infra-red material:
Fe: Cr: Mn: O=16.4: 13.3: 1: 46.5 (mol ratio).
With above-mentioned raw materials in proportion after the weighing, in mixing tank, stirred 20-30 minute, pre-dispersed, on three roller ink grinding mills, be rolled then, make it to reach flexographic ink utilisation technology index, promptly obtain different-waveband infrared absorption/reflection is had the offset printing anti-forgery ink of obvious contrast, its absorption spectrum as shown in Figure 2.
Embodiment 2: the protruding seal anti-forgery ink that different-waveband infrared absorption/reflection is had obvious contrast
Raw material is formed (weight percent):
Inorganic, metal oxide infra-red material: 20%
Resol oil: 25%
Calcene filler: 53%
Siccative: 1%
High-boiling point kerosene: 1%
Wherein the composition of inorganic, metal oxide infra-red material is with embodiment 1.
With above-mentioned raw materials in proportion after the weighing, in mixing tank, stirred 20-30 minute, pre-dispersed, on three roller ink grinding mills, be rolled then, make it to reach letterpress printing ink utilisation technology index, promptly obtain different-waveband infrared absorption/reflection is had the protruding seal anti-forgery ink of obvious contrast.
Embodiment 3: the rotogravure anti-forgery ink that different-waveband infrared absorption/reflection is had obvious contrast
Raw material is formed (weight percent):
Inorganic, metal oxide infra-red material: 35%
Saturated polyester resin: 20%
Ethyl acetate: 42%
Dispersion agent: 1%
Defoamer: 1%
Wax powder: 1%
Wherein, the composition of inorganic, metal oxide infra-red material:
Fe∶Cr∶Mn∶Ba∶F∶O＝230.3∶186.8∶12.2∶1∶2∶649.9。
Above-mentioned raw materials is in proportion after the weighing, in the high speed dispersion device, stirred 20-30 minute, pre-dispersed, in sand mill, grind then, make it to reach rotogravure printing ink utilisation technology index, be the rotogravure anti-forgery ink that different-waveband infrared absorption/reflection is had obvious contrast, its absorption spectrum as shown in Figure 3.
Embodiment 4: the carved gravure anti-fake printing ink that different-waveband infrared absorption/reflection is had obvious contrast
Raw material is formed (weight percent):
Inorganic, metal oxide infra-red material: 30%
Resol oil: 20%
Calcene: 49%
Siccative: 1%
Wherein, the composition of inorganic, metal oxide infra-red material can be with reference to the embodiment 4 of patent application CN200610164941.4.
With above-mentioned raw materials in proportion after the weighing, in mixing tank, stirred 20-30 minute, pre-dispersed, on three roller ink grinding mills, be rolled then, make it to reach gravure ink utilisation technology index, be the carved gravure anti-fake printing ink that different-waveband infrared absorption/reflection is had obvious contrast, its absorption spectrum as shown in Figure 4.
Embodiment 5: the silk screen anti-forgery ink that different-waveband infrared absorption/reflection is had obvious contrast
Raw material is formed (weight percent):
Inorganic, metal oxide infra-red material: 25%
Gummy oil: 15%
Petroleum solvent: 4%
Type 3U: 3.8%
Malic acid resin: 12.2%
Synolac 5%
Petroleum solvent (boiling range 160-200 ℃) 35%
The composition of inorganic, metal oxide infra-red material wherein: can be with reference to the embodiment 8 of patent application CN200610164941.4.
With the compounding substances high-speed stirring of aforementioned proportion, dissolving evenly disperses with three-roller then, promptly obtains different-waveband infrared absorption/reflection is had the silk screen anti-forgery ink of obvious contrast, and its absorption spectrum as shown in Figure 5.
Embodiment 6
Have in the offset printing anti-forgery ink of obvious contrast in embodiment 1 prepared absorption/reflection different-waveband infrared, the Ultraluminescence pigment that adds 15% (wt%) is (under the ultraviolet excitation of 365nm, send visible gold-tinted), according to known printing ink working method, make printing-ink, adopt information flag that this printing ink prints except that having described infrared anti-false feature, the antiforge function that also has the Ultraluminescence feature.
Embodiment 7
Offset printing anti-forgery ink with the embodiment 1 prepared absorption/reflection to different-waveband infrared has obvious contrast is imprinted on pairing use on the same carrier with homochromy common full infrared absorption printing ink cover.Twice typographic(al) mark under visible light on the printing has same color, under the irradiation of specific band infrared light, present the typographic(al) mark reflection strong (for example 1300-2000nm wave band) of anti-forgery ink of the present invention, the contrast effect that the typographic(al) mark of common ink absorbs, absorb strong (for example 740-800nm) and under another waveband infrared irradiation, present anti-forgery ink typographic(al) mark of the present invention, the effect that the common ink typographic(al) mark absorbs.
Embodiment 8
The embodiment 1 prepared absorption/reflection to different-waveband infrared is had obvious contrast offset printing anti-forgery ink, be imprinted on pairing use on the same carrier with homochromy common infrared external reflection printing ink cover.Twice typographic(al) mark under visible light on the printing has same color, and typographic(al) mark presents anti-forgery ink of the present invention and absorbs strong (for example 740-800nm) under the irradiation of specific band infrared light, the contrast effect of common ink reflection; Reflect strong (for example 1300-2000nm) and under another waveband infrared irradiation, present anti-forgery ink of the present invention, the effect of common ink reflection.
Embodiment 9
Embodiment 1 is made the identical carved gravure anti-fake printing ink of color respectively with embodiment 5 used inorganic infrared pigment, these two kinds of Antiforge infrared ink covers are imprinted on same carrier (for example Product labelling, valuable bills etc.) go up the pairing use, the mark of being printed absorbs by force the contrast effect that the reflection of the mark of another kind of printing ink is strong through the mark that the irradiation of specific band (800nm) infrared light presents a kind of printing ink; And this mark is strong through the mark reflection that another waveband infrared (1350nm) irradiation presents first kind of printing ink, and the mark of second kind of printing ink absorbs strong contrast effect.
Embodiment 10
Inorganic, metal oxide infra-red material one: 15%
The inorganic, metal oxide infra-red material two: 15% that other waveband infrared absorption/reflection is had obvious contrast
Resol oil: 20%
Colloid calcium base China ink: 49%
Siccative: 1%
Wherein, the composition of inorganic, metal oxide infra-red material one: with embodiment 1; The composition of material two: with embodiment 5.
Make carved gravure anti-fake printing ink according to the method shown in the embodiment 4, utilize the typographic(al) mark on paper of this printing ink to become printing (for example vellum paper or check).This printing presents respectively more by force through two different-waveband infrared (for example 800nm and 1350nm) irradiation and absorbs, and presents respectively than strong reflection (for example 1100nm) (respectively referring to Fig. 2 and Fig. 5 absorption curve) through another specific band infrared light irradiation.
Embodiment 11: the infrared magnetic anti-forgery ink
Raw material is formed (weight percent):
Inorganic, metal oxide material: 20%
Light color magneticsubstance: 15%
Resol oil: 20%
Calcene: 44%
Siccative: 1%
Wherein, the composition of inorganic, metal oxide infra-red material is with embodiment 1.
With above-mentioned raw materials in proportion after the weighing, in mixing tank, stirred 20-30 minute, pre-dispersed, on three roller ink grinding mills, be rolled then, make it to reach gravure ink utilisation technology index, this printing ink also has the infrared signature (can be used for the printing of antifalsification label, cash equivalent bill, safety line etc.) that different-waveband infrared absorption/reflection is had obvious contrast except that having magnetic characteristic.
Claims (13)
1. Antiforge infrared ink, it is characterized in that, at least comprise during described printing ink is formed and a kind ofly exist the infra-red material of difference, this infra-red material to have absorption intensity under two or more different infrared bands to absorption/reflection strength different-waveband infrared in the 720-2500nm wavelength region to differ infrared characteristic more than 0.2 or 0.2.
2. Antiforge infrared ink according to claim 1, it is characterized in that, there is difference in described infra-red material to different-waveband infrared absorption/reflection strength in the wavelength region of 750nm to 2000nm, and can have in the absorption intensity under two or more different-wavebands and differ infrared characteristic more than 0.3 or 0.3.
3. Antiforge infrared ink according to claim 1 is characterized in that: the infra-red material that comprises at least in the described anti-forgery ink is inorganic infra-red material, and it is 8%-80% that its content accounts for ink by weight percentage ratio, and the experience molecular formula of this inorganic infra-red material is A
xB
yC
zD
m, in the formula:
X is that 1-3, y are that 1-5, z are 0-2, m 〉=3;
A in this empirical formula is selected from least a in metallic elements of ferrum, cobalt, nickel, manganese and the tin, B is selected from least a in metallic element chromium, copper, tungsten, antimony, aluminium, titanium, zinc, lithium and the strontium, C is selected from least a in metallic element calcium, magnesium, sodium, potassium and the barium, D is selected from least a in elemental oxygen, fluorine, chlorine and the sulphur, but comprises oxygen at least.
4. Antiforge infrared ink according to claim 3, it is characterized in that: contain at least a and oxygen element in cobalt element, ferro element, manganese element and the nickel element in the inorganic infra-red material of this anti-forgery ink, and contain in chromium element, aluminium element, W elements, zinc element and the titanium elements at least a.
5. Antiforge infrared ink according to claim 3 is characterized in that, it is 10%-50% that the content of described inorganic infra-red material accounts for ink by weight percentage ratio.
6. Antiforge infrared ink according to claim 1 is characterized in that: this anti-forgery ink comprises black, redness, green, yellow or blue primitive colour printing ink and the respective color printing ink of preparing thus.
7. according to each described Antiforge infrared ink of claim 1-6, it is characterized in that: comprise also in the composition of this anti-forgery ink that other waveband infrared absorption/reflection is had in infra-red material, ultraviolet fluorescent material, infrared up-conversion material and the magneticsubstance of obvious contrast one or more.
8. Antiforge infrared ink according to claim 1 is characterized in that: this anti-forgery ink is flexographic ink, number printing ink, rotogravure printing ink, engraving intaglio printing ink or screen printing ink.
9. the preparation method of each described Antiforge infrared ink of claim 1-8, it is characterized in that: this method comprises to be mixed ink adhesive, infra-red material and ink addition agent, disperse, stir, and is rolled into printing ink then.
10. each described Antiforge infrared ink application in printed security element of claim 1-8.
11. application according to claim 10, wherein, described Security element comprises Valued Securities, certificate card, safety line, antifalsification label or false-proof film.
12. application according to claim 10, the pairing that comprises two kinds of described Antiforge infrared inks is used or the pairing of described Antiforge infrared ink and homochromy common ink is used, wherein, the tangible infrared band scope of infrared absorption/reflection contrast that has separately of two kinds of described Antiforge infrared inks using of described pairing is inequality.
13. according to claim 11 or 12 described application, wherein, described Valued Securities comprise bank note, check, supporting documents, forwarding document, costoms forms, lottery ticket, admission ticket, coupons or deposit receipt.
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Cited By (19)
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| CN101783094A (en) * | 2010-03-15 | 2010-07-21 | 华为终端有限公司 | Making method of infrared anti-counterfeiting mark and product having infrared anti-counterfeiting mark |
| CN101812254A (en) * | 2010-04-28 | 2010-08-25 | 王枫 | Colorless aqueous ink for printing watermark anti-counterfeiting identifier |
| CN102352148A (en) * | 2011-07-20 | 2012-02-15 | 合肥工业大学 | Usage of temperature-sensitive luminous tenebrescent material |
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| CN103013223A (en) * | 2012-12-04 | 2013-04-03 | 上海伊诺尔印务有限公司 | Offset print anti-forgery ink |
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