CN102935769B - Safety product and method for printing anti-counterfeiting mark - Google Patents
Safety product and method for printing anti-counterfeiting mark Download PDFInfo
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- CN102935769B CN102935769B CN201210491730.7A CN201210491730A CN102935769B CN 102935769 B CN102935769 B CN 102935769B CN 201210491730 A CN201210491730 A CN 201210491730A CN 102935769 B CN102935769 B CN 102935769B
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Abstract
The invention provides a safety product and a method for printing an anti-counterfeiting mark and belongs to the field of the anti-counterfeiting technology. The anti-counterfeiting mark on the safety product is used as safety identification information and is printed by using metal effect ink and optically variable ink. The mark printed by the two kinds of ink can display close or same appearance effects in a certain viewing angle scope and can be deemed to be printed by one ink. When the viewing angle is changed, the color of the mark printed by the optically variable ink is changed, the color of the mark printed by the metal effect ink is not changed, and the two marks show obvious color differences. Compared with the anti-counterfeiting means only utilizing one type of single optically variable ink, according to the mark disclosed by the invention, the metal effect ink and the optically variable ink can be used in a paired way, the public anti-counterfeiting features of the safety product is easier to identify, and simultaneously the anti-counterfeiting performance of the safety product is also improved.
Description
Technical field
The present invention relates to field of anti-counterfeit technology, particularly relate to a kind of security article using metal effect ink and photochromatic printing ink to match to have printed anti-counterfeiting information to mark, the invention still further relates to the printing method as the anti-fake mark of security information on this security article.
Background technology
Photochromatic printing ink (OVI) is the ink that a kind of Show Color can change with the difference of viewing angle, effect shows that the mark (comprising word, pattern etc.) utilizing this ink to print or to be coated with also can produce color change with the difference of viewing angle, be called " changeable colors along with angle " or " with angle variable color ", user differentiates easily via the change realization character observing color, is a kind of public's counterfeit protection measures of high technology content.Feature due to this changeable colors along with angle is difficult to copy, and therefore the use of all kinds of photochromatic printing ink occupies critical role in public's anti-counterfeiting technology.
Although photochromatic printing ink can provide the antiforge function of higher counterfeit difficulty, but when being used alone, the recognition property being supplied to the public is exactly that the color of typographic(al) mark can change with the change of viewing angle, when not having reference, such color change is often easily out in the cold, not easily observes.For this problem, at present existing document proposes the method that the ink pairing that two kinds of different optically variable pigments are made used, two kinds of ink are printed be marked at a specific incidence angle time show same hue, and show color different from each other when all other incidence angles.But, use two kinds of different photochromatic printing inks can only realize the coupling of color simultaneously within the scope of a very narrow viewing angle, be not easy to the public and observe identification; And the program needs exploitation to be specifically designed to the optically variable pigments of pairing, realizes high expensive, limits the feasibility of practical application.Separately there is document to disclose diffraction type photochromatic printing ink and common ink to be matched the scheme used, two kinds of ink have identical matching color under an incidence angle, color-match is not had in other incidence angle, but the rainbow discoloration effect of low chroma can only be demonstrated due to diffraction type photochromatic printing ink self, certain requirement is had to the observation ability of the public and method, and the determination of its color changeable effect also may be subject to the impact of environment of observation (such as light), therefore antifalse effect is not good.Above two schemes only considered the color-match of two kinds of ink and does not consider other appearance of two kinds of ink, because photochromatic printing ink has obvious flicker effect, if only realize the color-match of two kinds of ink and do not consider the coupling of other appearance, observer still can find that the two is not same ink.
On the other hand, at present to the use of photochromatic printing ink also only based on providing with angle variable color feature, along with the raising of counterfeiter's technical merit, for the goods needing higher false proof grade, still there is potential safety hazard.
So, select more suitably ink pairing, the color changeable effect of photochromatic printing ink is easier to observed, also can increase the forgery difficulty of goods simultaneously, obviously also need further exploration.
Summary of the invention
Technical problem underlying solved by the invention is to provide a kind of security article with the false proof and false proof effect of specialty of the public, its security information had is matched by photochromatic printing ink and metal effect ink and is used and print, not only make the light of anti-counterfeiting mark become feature be more convenient for the public identify, add imitation difficulty simultaneously.
Present invention also offers the method printing anti-fake mark on security article, by to the selection of photochromatic printing ink and metal effect ink with mate, make anti-fake mark be provided with composite anti-fake effect, thus make public's identity of security article and copy difficulty to be all improved.
Present invention also offers the pairing ink for printing anti-fake mark, this pairing ink is made up of photochromatic printing ink and metal effect ink, is particularly useful for printing being convenient to public's identification and copying the large anti-fake mark of difficulty, to provide composite anti-fake effect.
For stating conveniently, the present invention " the first mark " and " the second mark " illustrate the content adopting metal effect ink and photochromatic printing ink to print on the face of undertaking the printing of respectively, can be the pattern, word, symbol etc. that design in advance; Unless expressly stated, ink of the present invention " printing zone " is interpreted as the region that the respective markers that ink printing is selected in above use is positioned at, printed pattern (comprising any imprint such as word or figure) can being referred to, also can referring to the setting regions for printing respective markers.
Photochromatic printing ink not only shows with angle variable color, and himself having flicker effect is also obvious external appearance characteristic.Metal effect ink has unique metallic luster and blinking characteristic, so its appearance characteristics and photochromatic printing ink have similitude.If metal effect ink and photochromatic printing ink pairing are used and are printed on two zoness of different of security article or the different piece of the same area, observe within the scope of certain angle, two kinds of ink appearance can show close, conversion certain angle is observed, utilize the color of metal effect ink printing constant, utilize another part of photochromatic printing ink printing that color change then occurs.By the paired observation of two kinds of ink printing marks, the public anti-fake function of product can be strengthened, be convenient to the public and identify, increase and forge difficulty.
So, the present invention provide firstly a kind of security article, the face of undertaking the printing of of these goods is printed with the mark comprising identifying information, described mark at least comprises the first mark adopting metal effect ink to print and the second mark adopting photochromatic printing ink to print, observe under visible ray, when the first mark is marked at the first viewing angle with second, show close or identical appearance, after changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes.
Described first mark marks the different piece that can be positioned at same pattern with second; Or the first mark with the second indicia distribution, can design as required and print in different pattern or region.
Security article provided by the invention, observes under visible light, and show identical or close appearance when the first mark is marked at the first viewing angle with second, that is, the two can be considered that same ink printed; After changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes, that is, the two color forms sharp contrast.The public can not only observe the color change of anti-fake mark easily, also improves the security performance of goods simultaneously.Security article provided by the invention achieves the color-match of two kinds of marks in wider viewing angle, is easy to the public and observes identification.And the first mark and the second mark have gay colours and close flicker level, can be considered and are printed by a kind of ink, therefore compared to prior art, more improve the false proof level of the public of security article when the first viewing angle is observed.
Security article provided by the invention, for printing the metal effect ink of the first mark, can for having the ink of infrared signature near infrared spectrum district, in specific embodiments, first mark has INFRARED ABSORPTION or infrared external reflection or does not infraredly absorb not reflectance signature, and above-mentioned infrared signature refers to and shows obvious Absorption Characteristics, reflectance signature in the near infrared spectrum district of 750-1100nm or do not absorb not reflectance signature.If the mark printed has INFRARED ABSORPTION or infrared external reflection feature, for this security article further provides professional anti-counterfeiting characteristic, namely, first and second marks are placed near infrared region simultaneously detect, specific infrared signature can also be detected, such as, in certain wave-length coverage, default characteristic infrared absorption can be detected, can be that two marks have absorption characteristic (under infrared light, display gray shade value is identical) simultaneously, or there is obviously contrary infrared characteristic (under infrared light, gray value is obviously different), false proof for the public and professional anti-counterfeiting characteristic is combined, significantly improve imitation difficulty.
Security article provided by the invention can comprise the various goods needing safety verification such as money, marketable securities, bill, certificate card, safety line, antifalsification label, false-proof film or documentary evidence.
Present invention also offers the method printing anti-fake mark on security article, the method comprises and adopts metal effect ink and photochromatic printing ink as color matching ink, the face of undertaking the printing of of security article is printed the first mark and the second mark respectively, observe under visible ray, close or identical appearance is shown when making the first mark be marked at the first viewing angle with second, after changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes.
According to application and needs, the metal effect ink that the present invention uses and photochromatic printing ink can be selected from engraving intaglio printing ink respectively, ink for screen printing, shadow write gravure ink or the pairing of coating ink, and the two is identical or different, that is, described first mark and the second mark can separately for carved gravure mark, silk marks, shadow write gravure mark or applying indicia.Safety element of the present invention can utilize the conventional mode of printing such as gravure, silk-screen, flexographic printing and coating to make, and also can select two kinds of different mode of printing type metal effect ink and photochromatic printing inks respectively according to actual conditions.Preferably, metal effect ink of the present invention and photochromatic printing ink can select the engraving intaglio printing ink with obvious feel, make security article also possess vision and the dual public's anti-counterfeiting characteristic of sense of touch simultaneously, are more difficult to copy.
Be appreciated that enforcement of the present invention has the following advantages:
1, security article of the present invention comprises the color change interval of photochromatic printing ink printing and the non-color change interval of metal effect ink printing simultaneously, under visible light, two regions are observed and be can be considered that use same ink is printed and shows gay colours within the scope of certain viewing angle; After changing viewing angle, two field color form sharp contrast.This security article achieves the outward appearance coupling of two kinds of marks and has chromatic colour in wider viewing angle, highlight the visual effect of photochromatic printing ink, be easy to observe and deep impression can be left to observer, thus the false proof level of the public that improve security article.
2, security article of the present invention can also use the metal effect ink and photochromatic printing ink with infrared characteristic, while providing color variation characteristic to differentiate, carry out machine-readable detection by special inspecting equipment, bank machine easy to use carries out True-false distinguish to security article.
3, security article of the present invention has public's anti-counterfeiting characteristic and machine-readable anti-false feature concurrently, significantly improves imitation difficulty, improves the integrated anti-counterfeit level of security article.
Accompanying drawing explanation
Fig. 1 is a kind of floor map comprising the security article of green/blue photochromatic printing ink and green metal effect ink impressing pattern of the present invention.
Fig. 2 is a kind of floor map comprising the security article of gold/green light sensitive ink and golden metallic effect ink impressing pattern of the present invention.
Fig. 3 is a kind of floor map of security article of green metal effect ink impressing pattern comprising green/blue photochromatic printing ink and have infrared absorption characteristic of the present invention.
Fig. 4 is a kind of floor map of security article of green metal effect ink impressing pattern comprising gold/green light sensitive ink and have infrared external reflection characteristic of the present invention.
Fig. 5 is a kind of floor map comprising the security article of green/blue photochromatic printing ink and blue metal effect ink impressing pattern of the present invention.
Fig. 6 is a kind of floor map comprising the security article of green/magenta photochromatic printing ink and green metal effect ink impressing pattern of the present invention.
Fig. 7 is a kind of floor map comprising the security article of green/blue photochromatic printing ink and green metal effect ink impressing pattern of the present invention.
Fig. 8 is a kind of security article floor map comprising the opened window safety line jointly made with the golden metallic effect ink with infrared absorption characteristic by gold/green light sensitive ink of the present invention.
Detailed description of the invention
Security article provided by the invention, its face of undertaking the printing of at least has utilize photochromatic printing ink and metal effect ink to match to use print first mark and second to mark, and the mark that two kinds of ink is printed can show the coupling of appearance within the scope of certain viewing angle.
Conventional according to industry, the appearance of photochromatic printing ink mainly comprises two aspects, is first to have the color changed with visual angle, can demonstrate certain flicker effect in addition.These two kinds of characteristics can use chromatic value (L respectively
*a
*b
*) and flicker value (SG) carry out quantitative expression, it measures and uses multi-angle colour photometer to realize according to industry universal method.
Security article provided by the invention is by the use of two kinds of pairing ink, the first mark obtained and the second mark, identical or close appearance is shown as within the scope of certain viewing angle, identical or the close appearance of described display refers to that the public detects by an unaided eye a few indifference, can be considered as same ink and printed.The present invention's alleged " the first viewing angle " and " the second viewing angle ", unless otherwise indicated, is all interpreted as certain viewing angle scope, but not certain specific viewing angle.
In the present invention, use aberration (⊿ E) to represent the color distortion in two kinds of ink printing regions further, utilize flicker value difference (⊿ SG) to represent the flicker level difference in two kinds of ink printing regions:
When the first viewing angle is perpendicular observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle to satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 3, flicker value difference ⊿ SG is not more than 1.5; When the first viewing angle is for substantially looking squarely observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle and satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 5, flicker value difference ⊿ SG is not more than 1.5.
In specific embodiment of the invention scheme, described first viewing angle refers to that perpendicular is observed, and described second viewing angle refers to looks squarely observation substantially; Or described first viewing angle refers to looks squarely observation substantially, and described second viewing angle refers to that perpendicular is observed.That is, observe under visible light, metal effect ink and photochromatic printing ink printing to be marked at appearance when observation is observed or looked squarely to perpendicular identical, observer cannot distinguish the two; After changing viewing angle, use the field color of photochromatic printing ink printing to change, and the marker color using metal effect ink to print is constant, thus demonstrates obvious color distortion.In the present invention, perpendicular is observed and is referred to that viewing angle and substrate surface vertical line angle are at 0 °-15 °, substantially looks squarely observation and refers to that viewing angle and substrate surface vertical line angle are at 50 °-70 °.Due to the benchmark having non-discoloring mark to compare as color, the visual effect of photochromatic printing ink typographic(al) mark is more remarkable, also be conducive to the notice of observer to be directed on anti-fake mark simultaneously, the diagnostic characteristics of security article is more easily identified by the public, thus the false proof level of the public that improve security article.
During visualization, the outward appearance that first mark of security article provided by the invention and the second mark can realize two kinds of marks within the scope of wider viewing angle is mated substantially, in order to this matching effect of quantificational expression, a typical angle can be chosen use instrument to carry out measuring so that carry out relatively pairing effect within the scope of this angle automatching.Measurement for marking appearance can use multi-angle colour photometer to complete according to the known method of the industry.This instrument adopts 45 ° of direct light, respectively in-15 °, 15 °, 25 °, 45 °, 75 ° and 110 ° of six angular surveying colors.Measured angular is wherein defined as the angle with lighting source specular angle, rotate to be to illumination light direction on the occasion of.This instrument can also characterize the flicker effect of ink by measuring flicker value.The result recorded under instrument-15 ° of measured angular can be similar to and represent the observing effect of human eye when looking squarely, and the result recorded under instrument 45 ° of measured angular can be similar to effect when representing human eye at right-angle view.Unless otherwise specified, the method is all adopted to measure marking appearance and change thereof in the present invention.
In the present invention, for making measurement standard consistent, the criterion that when perpendicular is observed, the appearance of two marks is close or identical refers to the measurement result under 45 ° of measured angular; The criterion that when substantially looking squarely observation, the appearance of two marks is close or identical refers to the measurement result under-15 ° of measured angular.
The second mark printed owing to adopting photochromatic printing ink has obvious characteristic infrared absorption, in order to improve integrated anti-counterfeit performance further, first mark also can have infrared signature, this infrared signature refers to and shows obvious Absorption Characteristics or reflectance signature near infrared spectrum district, and the two is determining that the infrared reflectivity of wave-length coverage is substantially identical or obviously different, thus gives goods more higher leveled two wires antiforge function.Observe under now the printed first and second marks being placed in infrared light, substantially identical or visibly different gray value can be shown.
Described first mark has characteristic infrared absorption and refers in particular in the infrared spectral region of the 750-1100nm wavelength the strongest absworption peak of existence (observe under being placed in infrared light, can show obvious high gray value).
Now certain specific wavelength place near infrared spectrum district, the first and second marks of two kinds of ink printing areas have substantially identical reflectivity, and namely under infrared light, observation and expression goes out substantially identical gray value (infrared signature is identical).Substantially identical reflectivity described herein refer to first and second be marked at institute's determined wavelength under reflection differences not higher than 6%.Unless otherwise specified, the first mark described in the present invention has characteristic infrared absorption and refers to that the reflectivity of maximum absorption wave strong point in 750-1100nm wave-length coverage (is placed under infrared light and observes approximate black) below 30%.
Described first mark has infrared external reflection feature and refers to that the reflectivity at maximum reflection wavelength place in 750-1100nm wave-length coverage observes broken white under being placed in infrared light higher than 70%().
Now certain specific wavelength place near infrared spectrum district, the first and second marks of two kinds of ink printing areas have visibly different reflectivity, and namely under infrared light, observation and expression goes out visibly different gray value, forms a sharp contrast.Visibly different reflectivity described herein refer to first and second be marked at institute's determined wavelength under reflection differences higher than 30%.
According to the solution of the present invention, when the first mark does not have above-mentioned infrared character, namely, the infrared metal effect ink not absorbing not reflectance signature is adopted to print the first mark, to the observation caliber of obtained security article can be: when the first viewing angle is perpendicular observation, show close or identical appearance to refer to, measure the first mark and satisfy condition with the second following parameter difference marked under this first viewing angle: look difference ⊿ E is not more than 3, flicker value difference ⊿ SG is not more than 1; When the first viewing angle is for substantially looking squarely observation, show close or identical appearance to refer to, under this first viewing angle, measure the first mark satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 4, flicker value difference ⊿ SG is not more than 1.
From the kind of printed ink, described first mark and the second mark can separately for carved gravure mark, silk marks, shadow write gravure mark or applying indicia etc.Wherein preferably use the engraving intaglio printing ink with obvious feel, make security article possess vision and the dual public's anti-counterfeiting characteristic of sense of touch simultaneously, be more difficult to copy.
Security article of the present invention can comprise money, marketable securities, bill, certificate card, safety line, antifalsification label, false-proof film or documentary evidence etc., goes for the multiple field needing safety guarantee.
Present invention also offers the method printing above-mentioned anti-fake mark on security article, the method comprises and adopts metal effect ink and photochromatic printing ink as color matching ink, the face of undertaking the printing of of security article is printed the first mark and the second mark respectively, observe under visible ray, first mark shows identical or close appearance when being marked at the first viewing angle with second, after changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes.
Because photochromatic printing ink not only has the color with angle change, also can manifest certain blinking characteristic, the ink therefore used with its pairing all will closely with photochromatic printing ink just can must make the two show close visual effect in these two.The research display of inventor, metal effect ink can meet above requirement, is also based on the recognition, and present invention employs metal effect ink and photochromatic printing ink as color matching ink for printing the security article making and have higher false proof level.
Effect pigment can provide suitable flicker effect and metallic luster for ink, and the color that the common pigments comprised in metal effect ink can adjust ink further makes the photochromatic printing ink within the scope of itself and set viewing angle match.Pigment content total in ink can require to determine according to the printability of the appearance of photochromatic printing ink and ink usually.In described metal effect ink, in ink gross mass, include the effect pigment of 6-35% and the transparent or semitransparent pigment (as azo or phthalocyanines organic pigment or inorganic pigment etc.) of 0.5-4%, the pigment that preferred use covering power is weak, have good transparency, to prevent the flicker effect of effect pigment covered.
The research display of inventor, photochromatic printing ink has stronger flicker effect and compares chromatic colour, and its flicker value recorded can reach between 7-9, and under 45 ° of measured angular, chroma value reaches 30-40.For realizing the optimal appearance matching effect with photochromatic printing ink, the relative scale of the effect pigment comprised in metal effect ink is also one of influence factor of needs consideration further.In order to the flicker level and photochromatic printing ink that make metal effect ink match, its effect pigment comprised should select the pigment with stronger flicker effect, the company such as Basf, Merck such as can be selected to produce with thin slices such as glass, mica, aluminium oxide, silica for base material, the effect pigment that external sheath metal or metal oxide are formed, or they combine arbitrarily.In specific embodiment of the invention scheme, the composition of effect pigment specifically can comprise: take glass as the coated effect pigment 10-40% of base material, take mica as the coated effect pigment 10-70% of base material, take aluminium oxide as the coated effect pigment 10%-40% of base material, take silica as the coated effect pigment 0%-60% of base material, described composition is based on effect pigment gross mass included in this ink, and the mass percent sum of each composition reaches 100%.Because the color chroma of effect pigment self is lower, in order to the bright-colored degree and photochromatic printing ink making metal effect ink matches, it is favourable in metal effect ink, adding a certain amount of transparent or semitransparent pigment to increase chroma.The research display of inventor, the transparent or semitransparent pigment adding 0.5-4% in metal effect ink is conducive to making its bright-colored degree and photochromatic printing ink not affect again the flicker effect of metal effect ink quite simultaneously.
In addition, the effect pigment selected also needs with photochromatic printing ink close on grain size, and the two kinds of ink being beneficial to realize pairing use have close appearance.The average grain diameter of described effect pigment is preferably 5-70 micron, preferred 10-40 micron.The particle diameter of effect pigment is associated with the flicker level of layer of ink and printability, usually, the particle diameter larger ink layer of ink flicker of pigment is stronger, the less then printability of particle diameter is better, therefore the selection of average grain diameter also should, based on the balance of layer of ink brightness and printability, make printed information (pattern) have metal effect outward appearance blinking characteristic.
In a word, the present invention proposes first and utilizes metal effect ink and photochromatic printing ink to match to use, provide the counterfeit protection measures (color changeable effect of photochromatic printing ink can be set off very well) being more easy to identify, but also introduce the unique security feature of metal effect ink simultaneously, reach and make security article be easy to be identified by the public, be difficult to the object of being forged by fake producer.
Photochromatic printing ink has stronger infrared absorption characteristic, and normal metal effect ink generally has faint INFRARED ABSORPTION effect, namely of the present inventionly infraredly not reflecting effect is not absorbed, its ratio of infrared absorption intensity is obviously weaker than photochromatic printing ink, and therefore pairing can play good public's antifalse effect after using.In order to make security article have the false proof and professional anti-counterfeiting characteristic of the public simultaneously, in specific embodiments of the present invention, by using the metal effect ink with INFRARED ABSORPTION or reflectance signature, the integrated anti-counterfeit function of security article can also be promoted further.
For making metal effect ink have infrared external reflection characteristic, making it observe under infrared light and forming obvious contrast with photochromatic printing ink, effect pigment wherein needs preferably to use the pigment with infrared external reflection characteristic, as far as possible few with the pigment with infrared absorption characteristic.When the metal effect ink used has infrared external reflection feature, it is obviously different from photochromatic printing ink in the infrared signature of near infrared spectrum district display, can be presented as, in certain near-infrared wavelength determined or wave-length coverage, the mark one that two kinds of ink provides shows as obvious reflection, and another shows as obvious absorption.Now, printed first and second marks are placed near infrared region simultaneously detect, specific infrared signature can be detected, such as, metal effect ink and photochromatic printing ink have visibly different infrared characteristic in the infrared spectral region of 750-1100nm, the region of the two printing or coating presents low gray value (close to white) and high gray value (close to black) respectively under infrared light, forms sharp contrast.
Metal effect ink also can have the infrared absorption characteristic close with photochromatic printing ink, now selects the stronger effect pigment of INFRARED ABSORPTION to be more conducive to embody metallic luster and the infrared signature of ink as far as possible simultaneously.Because the ratio of infrared absorption intensity of effect pigment is obviously weaker than optically variable pigments, for making metal effect ink have the infrared absorption characteristic close with photochromatic printing ink, also preferably in metal effect ink, add a certain amount of infrared absorbing material.In a particular embodiment, the described metal effect ink for printing the first mark has characteristic infrared absorption near infrared spectrum district, now contain in its composition and account for the infrared absorbing material of this ink gross weight 1-10% and the infrared conditioning agent of 0.1-5%, and this metal effect ink shows reflectivity near infrared region maximum absorption wave strong point lower than 30% by the use of infrared absorbing material, described infrared conditioning agent for show as INFRARED ABSORPTION near infrared region, and has the material of blinking characteristic.The metal effect ink now used adds infrared signature on the basis of existing technology as two wires counterfeit protection measures, adopt this metal effect ink with infrared signature and photochromatic printing ink to match to use, while the color change of having set off photochromatic printing ink marking, also provide professional anti-counterfeiting characteristic.
Preferably, for above-mentioned the first mark having INFRARED ABSORPTION or infrared external reflection characteristic metal effect ink and print, what itself and photochromatic printing ink were printed second marks and realizes appearance and mate and need meet the following conditions:
When perpendicular is observed, the close criterion of appearance of two marks refers to that the: Se Cha ⊿ E that need satisfy condition of the following parameter difference both measuring under 45 ° of measured angular is not more than 3; Flicker value difference ⊿ SG is not more than 1.5;
Following parameter difference both the criterion that when substantially looking squarely observation, the appearance of two marks is close refers to measure under-15 ° of measured angular: Se Cha ⊿ E that need satisfy condition is not more than 5; Flicker value difference ⊿ SG is not more than 1.5.
In order to not affect the flicker effect of metal effect ink and bright-colored degree, the hiding power value of the infrared absorbing material comprised in metal effect ink of the present invention generally should lower than 50%, preferably lower than 38%, make infrared absorbing material in visible-range, have the good transparency.
As illustrated above, the metal effect ink with infrared signature used in the present invention, has characteristic infrared absorption and refers in particular at the strongest absworption peak of the infrared spectral region of 750-1100nm wavelength existence near infrared spectrum district.This absworption peak can show as narrow-band absorption, also can show as wide cut and absorb.
On the basis meeting these conditions, in INFRARED ABSORPTION metal effect ink of the present invention, infrared absorbing material can be chosen as aromatic amine compounds Huo perylene compounds.Such as, two perylene compound, triarylamine compounds etc., concrete example as two in four relevant carboximide perylene compound, triaryl amine Sulfonates compound etc., when using these infrared absorbing materials, its addition in ink generally can be controlled within 10%.
Preferably, described metal effect ink composition comprises the infrared absorbing material accounting for this ink gross weight 1-6% and can meet the INFRARED ABSORPTION effect (having identical gray value both observing under infrared light) needed for matching with photochromatic printing ink.
Used in the present invention have in the metal effect ink of characteristic infrared absorption, also can comprise suitable infrared conditioning agent, this infrared conditioning agent shows as INFRARED ABSORPTION near infrared region, and has certain flicker effect, in ink, content is 0.1-5%, preferred 0.1-3%.Appropriate infrared conditioning agent can contribute to infrared absorbing material provides the infrared characteristic and good materialization patience that can meet anti-counterfeiting information identification in metal effect ink.When employing infrared conditioning agent, (such as addition is 1-10%, preferred 1-6%), infrared conditioning agent and the infrared absorbing material content summation in ink generally can be no more than the gross weight of 15%(based on ink), it is the coated tin oxide of base material that this infrared conditioning agent can comprise with mica, take mica as the coated antimony doped tin oxide of base material etc., the preparation method of this infrared conditioning agent also can with reference to the related content of international patent application WO0043456, certainly, although this formerly describes acquisition and the some properties of this infrared conditioning agent in disclosed document, but do not instruct it on the impact of the infrared characteristic of metal effect ink.
The compositional system of metal effect ink comprises the convenient source such as transparent binder, effect pigment, Nano filling, various conditioning agents.In concrete scheme, based on total weight, the composition of described metal effect ink comprises: transparent binder 30-70%, effect pigment 6-35%, transparent or semitransparent pigment 0.5-4%, infrared absorbing material 0-10%, infrared conditioning agent 0-5%, Nano filling 0.1-15% and auxiliary agent 1-25%, and in made ink, the summation of each composition should be 100%.
Particularly, the binder in above-mentioned ink composition can be the good resinaes of adhesive force such as alkyd resins, phenolic resins, polyurethane resin, vinyl chloride-vinyl acetate resin.Filler can be the nano-sized filler that the transparency is good, and as one or more in nano-calcium carbonate, nano silicon, nano-aluminium oxide etc., addition can be that 1-15%(is based on total weight under normal circumstances).Auxiliary agent then comprises wax powder, drier, solvent, surfactant, light trigger (for UV ink), defoamer, levelling agent, adhesion promoter, directing agent etc., drier is one or more metal salts of organic acids of light colour, surfactant is one or more in anion or non-ionic surface active agent, and other auxiliary agent is not described in detail at this.For simplicity of exposition, in the ink formulations of the embodiment of the present invention by the composition of binder, filler, surfactant and wax referred to as " ink base oil " or " base oil ".
According to application and needs, the metal effect ink that the present invention uses and photochromatic printing ink are selected from engraving intaglio printing ink respectively, ink for screen printing, shadow write gravure ink or the pairing of coating ink, and the two is identical or different, that is, described first mark and the second mark can separately for carved gravure mark, silk marks, shadow write gravure mark or applying indicia.Safety element of the present invention can utilize the conventional mode of printing such as gravure, silk-screen, flexographic printing and coating to make, and also can select two kinds of different mode of printing type metal effect ink and photochromatic printing inks respectively according to actual conditions.
In a word, security article provided by the invention has the false proof and false proof two kinds of anti-counterfeiting characteristics of specialty of the public simultaneously, is more conducive to the public and identifies, also significantly increase imitation difficulty simultaneously.
The photochromatic printing ink used in following examples is the product of being purchased, such as, can buy from Sicpa company.
The preparation technology of metal effect ink can be, selected effect pigment and the good base oil of prior rolling, Ji Mo are under agitation mixed, such as, preparation process is: first binder, filler, wax and surfactant are weighed mixing in proportion, stir pre-dispersed after, be rolled into base oil, then by pigment, infrared absorbing material respectively with base oil mixed rolling Cheng Jimo, finally in proportion base oil, Ji Mo and effect pigment are fully mixed by high-speed stirred.Apart from specified otherwise, the metal effect ink in following examples all can according to or suitably adjust with reference to described method and prepare.
Embodiment 1
Fig. 1 is one embodiment of the invention schematic diagrames, and pattern is designed to word " dragon ", adopts carved gravure wiring printing to form.Pattern the first half region 1 uses the printing of green/blue photochromatic printing ink, and the latter half region 2 uses the printing of green metal effect ink.
Green metal effect ink formula (% by weight):
The composition of the effect pigment in above-mentioned formula: take glass as the coated effect pigment 20-35% of base material, take mica as the coated effect pigment 50-70% of base material, take aluminium oxide as the coated effect pigment 10%-30% of base material, take silica as the coated effect pigment 0%-8% of base material, described composition is based on effect pigment gross mass included in this ink, and the mass percent sum of each composition reaches 100%.
The preparation process of this ink is: first binder, nano silicon, wax and dodecyl benzene sulfonate are rolled into base oil; Then by green pigment and base oil mixed rolling Cheng Jimo; Finally described base oil, Ji Mo, effect pigment, drier and solvent are fully mixed and made into described ink by high-speed stirred.
When perpendicular is observed, region 1 and region 2 all shows green and other appearance is identical; When looking squarely, region 1 becomes blueness, and the color in region 2 is constant, and the two forms strikingly color contrast.
Two kinds of ink printing regions are as shown in table 1 in the parameters difference of normal viewing angles (45 °).
Table 1
| ⊿E | ⊿SG |
| 1.78 | 0.45 |
Embodiment 2
Fig. 2 is one embodiment of the invention, and use carved gravure prints two different patterns.Wherein region 3 uses gold/green light sensitive ink printing, and region 4 uses the printing of golden metallic effect ink.Golden metallic effect ink formula (% by weight):
Effect pigment composition in above-mentioned formula: take glass as the coated effect pigment 20-35% of base material, take mica as the coated effect pigment 20-35% of base material, take aluminium oxide as the coated effect pigment 10%-30% of base material, take silica as the coated effect pigment 20%-35% of base material, described composition is based on effect pigment gross mass included in this ink, and the mass percent sum of each composition reaches 100%.
Described ink is made according to the method similar to embodiment 1.
When perpendicular is observed, region 3 all manifests gold with region 4 and appearance is identical; When substantially looking squarely observation, region 3 becomes green, and region 4 color remains unchanged, and the two forms strikingly color contrast.
Two kinds of ink printing regions are as shown in table 2 in the parameters difference of normal viewing angles (45 °).
Table 2
| ⊿E | ⊿SG |
| 1.49 | 0.36 |
Embodiment 3
Fig. 3 is one embodiment of the invention, adopts carved gravure printing.Wherein region 5 uses green/blue photochromatic printing ink, and region 6 uses the green metal effect ink with INFRARED ABSORPTION effect.
Green metal effect ink formula (% by weight):
Infrared conditioning agent in above-mentioned formula is the coated antimony doped tin oxide of mica.The ink of the present embodiment is manufactured according to the method similar to embodiment 1.
When perpendicular is observed, region 5 and region 6 all shows green and appearance is identical; When substantially looking squarely observation, region 5 becomes blueness, and the color in region 6 is constant, and the two forms strikingly color contrast.Region 5 and the region 6 near infrared spectrum reflectivity near 850nm is about 15%, observes under infrared light, and region 5 and region 6 manifest substantially identical high gray value.
Two kinds of ink printing regions are as shown in table 3 in the parameters difference of normal viewing angles (45 °).
Table 3
| ⊿E | ⊿SG |
| 1.75 | 0.68 |
Embodiment 4
Fig. 4 is one embodiment of the invention, and region 7 and region 8 all adopt silk-screen mode to print.Wherein region 7 uses gold/green light sensitive ink, and region 8 uses the green metal effect ink with infrared external reflection characteristic.
Green metal effect ink formula (% by weight):
When substantially looking squarely observation, region 7 and region 8 all shows green and appearance is identical; When perpendicular is observed, region 7 becomes gold, and the color in region 8 is constant, and the two forms strikingly color contrast.Region 7 infrared region spectral reflectivity near 850nm is about 20%, and region 8 infrared region spectral reflectivity near 850nm is about 80%; Observe under infrared light, region 7 shows high gray value and manifests low gray value with region 8, and the two forms a sharp contrast.
Two kinds of parameters differences that viewing angle (-15 °) is being looked squarely in ink printing region are as shown in table 4.
Table 4
| ⊿E | ⊿SG |
| 3.72 | 1.2 |
Embodiment 5
Fig. 5 is one embodiment of the invention, and region 9 adopts silk-screen mode to print, and region 10 adopts carved gravure mode to print.Wherein region 9 uses green/blue photochromatic printing ink, and region 10 uses blue metal effect ink.
Blue metal effect ink formula (% by weight):
Effect pigment composition in above-mentioned formula specifically comprises: take glass as the coated effect pigment 35-55% of base material, take mica as the coated effect pigment 0-8% of base material, take aluminium oxide as the coated effect pigment 50%-70% of base material, described composition is based on effect pigment gross mass included in this ink, and the mass percent sum of each composition reaches 100%.Described ink is made according to the method similar to embodiment 1.
When substantially looking squarely observation, region 9 all manifests blueness with region 10 and appearance is identical; When perpendicular is observed, region 9 becomes green, and the color in region 10 is constant, and the two forms strikingly color contrast.
Two kinds of parameters differences that viewing angle (-15 °) is being looked squarely in ink printing region are as shown in table 5.
Table 5
| ⊿E | ⊿SG |
| 3.56 | 0.86 |
Embodiment 6
Fig. 6 is one embodiment of the invention, and region 11 is the opened window safety line of green/magenta photochromatic printing ink coating and printing, and region 12 is the pattern using the printing of green metal effect ink silk-screen.
Green metal effect ink formula (% by weight):
When perpendicular is observed, region 11 and region 12 all shows green and appearance is identical; When substantially looking squarely observation, region 11 becomes magenta, and the color in region 12 is constant, and the two forms strikingly color contrast.
Two kinds of ink printing regions are as shown in table 6 in the parameters difference of normal viewing angles (45 °).
Table 6
| ⊿E | ⊿SG |
| 2.89 | 0.96 |
Embodiment 7
Fig. 7 is one embodiment of the invention, and region 13 adopts silk-screen mode to print, and region 14 adopts shadow to write gravure mode to print.Wherein region 13 uses green/blue photochromatic printing ink, and region 14 uses green metal effect ink.
Green metal effect ink formula (% by weight):
When perpendicular is observed, region 13 and region 14 all shows green and appearance is identical; When substantially looking squarely observation, region 13 becomes blueness, and the color in region 14 is constant, and the two forms strikingly color contrast.
Two kinds of parameters differences that viewing angle (-15 °) is being looked squarely in ink printing region are as shown in table 7.
Table 7
| ⊿E | ⊿SG |
| 2.07 | 0.21 |
Embodiment 8
Fig. 8 is one embodiment of the invention, and the region 15 connected and region 16 form opened window safety line jointly.Wherein region 15 uses gold/green light sensitive ink coating, and region 16 uses the golden metallic effect ink coating with infrared absorption characteristic.
Golden metallic effect ink formula (% by weight):
Effect pigment composition in above-mentioned formula specifically comprises: take glass as the coated effect pigment 30-45% of base material, take mica as the coated effect pigment 5-15% of base material, take aluminium oxide as the coated effect pigment 10%-30% of base material, take silica as the coated effect pigment 25%-40% of base material, described composition is based on effect pigment gross mass included in this ink, and the mass percent sum of each composition reaches 100%.
Described ink is made according to the method similar to embodiment 1.
When perpendicular is observed, region 15 all manifests gold with region 16 and appearance is identical; When substantially looking squarely observation, region 15 becomes green, and the color in region 16 is constant, and the two forms strikingly color contrast.The near infrared spectrum reflectivity of region 15 near 850nm is about 20%, and the near infrared spectrum reflectivity of region 16 near 850nm is about 25%, observes under infrared light, and region 15 and region 16 manifest substantially identical high gray value.Two regions are as shown in table 8 in the parameters difference of normal viewing angles (45 °).
Table 8
| ⊿E | ⊿SG |
| 2.33 | 1.45 |
Claims (16)
1. a security article, the face of undertaking the printing of of this security article is printed with the mark comprising identifying information, it is characterized in that: described mark at least comprises the first mark adopting metal effect ink to print and the second mark adopting photochromatic printing ink to print, observe under visible ray, first mark shows close or identical appearance when being marked at the first viewing angle with second, after changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes;
Wherein, when the first viewing angle is perpendicular observation, show close or identical appearance to refer to, measure the first mark satisfy condition with the second following parameter difference marked in this first viewing angle: look difference ⊿ E is not more than 3, flicker value difference ⊿ SG is not more than 1.5; When the first viewing angle is for substantially looking squarely observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle and satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 5, flicker value difference ⊿ SG is not more than 1.5.
2. security article according to claim 1, wherein, described first mark marks with second the different piece being positioned at same printing zone; Or the first mark and the second indicia distribution are in different printing region.
3. security article according to claim 1 and 2, wherein, described first viewing angle refers to that perpendicular is observed, and described second viewing angle refers to looks squarely observation substantially; Or described first viewing angle refers to looks squarely observation substantially, and described second viewing angle refers to that perpendicular is observed.
4. security article according to claim 1, wherein, described first mark has INFRARED ABSORPTION or infrared external reflection or does not infraredly absorb not reflectance signature.
5. security article according to claim 4, wherein, described first mark has characteristic infrared absorption and refers at the strongest absworption peak of the infrared spectral region of 750-1100nm wavelength existence.
6. security article according to claim 4, wherein, for having infrared the first mark not absorbing not reflectance signature, when first viewing angle is perpendicular observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle to satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 3, flicker value difference ⊿ SG is not more than 1; When the first viewing angle is for substantially looking squarely observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle and satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 4, flicker value difference ⊿ SG is not more than 1.
7. security article according to claim 1, wherein, described first mark and the second mark are separately for carved gravure mark, silk marks, shadow write gravure mark or applying indicia.
8. security article according to claim 1, described security article comprises money, marketable securities, bill, certificate card, safety line, antifalsification label, false-proof film or documentary evidence.
9. on security article, print the method for anti-fake mark, the method comprises and adopts metal effect ink and photochromatic printing ink as color matching ink, the face of undertaking the printing of of security article is printed the first mark and the second mark respectively, observe under visible ray, close or identical appearance is shown when making the first mark be marked at the first viewing angle with second, after changing into the second viewing angle, the color of the first mark is substantially constant, but the color of the second mark obviously changes;
Wherein, when the first viewing angle is perpendicular observation, show close or identical appearance to refer to, measure the first mark satisfy condition with the second following parameter difference marked in this first viewing angle: look difference ⊿ E is not more than 3, flicker value difference ⊿ SG is not more than 1.5; When the first viewing angle is for substantially looking squarely observation, show close or identical appearance to refer to, measure the first mark in this first viewing angle and satisfy condition with the second following parameter difference marked: look difference ⊿ E is not more than 5, flicker value difference ⊿ SG is not more than 1.5.
10. method according to claim 9, described is through coated effect pigment for printing the effect pigment comprised in the metal effect ink of the first mark, wherein, to be describedly selected from through coated effect pigment: take glass as the coated effect pigment of base material, take mica as the coated effect pigment of base material, take aluminium oxide as the coated effect pigment of base material, with silica be the coated effect pigment of base material or they combine arbitrarily.
11. methods according to claim 10, wherein, describedly comprise following composition for printing the effect pigment comprised in the metal effect ink of the first mark: take glass as the coated effect pigment 10%-60% of base material, take mica as the coated effect pigment 0%-70% of base material, take aluminium oxide as the coated effect pigment 10%-60% of base material, take silica as the coated effect pigment 0%-60% of base material, described composition is with the gross mass content of effect pigment in ink for benchmark, and the mass percent sum of each composition reaches 100%.
12. methods according to claim 9, wherein, described metal effect ink and photochromatic printing ink are selected from engraving intaglio printing ink respectively, ink for screen printing, shadow write gravure ink or coating ink, and the two is identical or different.
13. methods according to any one of claim 9-12, in described metal effect ink, in ink gross mass, include the effect pigment of 6-35% and the transparent or semitransparent pigment of 0.5-4%.
14. methods according to claim 9, wherein, the described metal effect ink for printing the first mark has characteristic infrared absorption near infrared spectrum district, contain in the composition of described metal effect ink and account for the infrared absorbing material of this metal effect ink gross weight 1-10% and the infrared conditioning agent of 0.1-5%, and this metal effect ink at the reflectivity of near infrared region maximum absorption wave strong point lower than 30%, described infrared conditioning agent is the material showing as INFRARED ABSORPTION near infrared region and have blinking characteristic.
15. methods according to claim 10, wherein, based on total weight, the composition of described metal effect ink comprises: transparent binder 30-70%, effect pigment 6-35%, transparent or semitransparent pigment 0.5-4%, infrared absorbing material 0-10%, infrared conditioning agent 0-5%, Nano filling 0.1-15% and auxiliary agent 1-25%, and in made ink, the summation of each composition is 100%.
16. methods according to claim 14, wherein, described metal effect ink has characteristic infrared absorption and refers at the strongest absworption peak of the infrared spectral region of 750-1100nm wavelength existence near infrared spectrum district.
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| EP3055457B1 (en) * | 2013-10-11 | 2024-02-21 | Sicpa Holding Sa | Optically variable security threads and stripes |
| BR112016003299B8 (en) * | 2013-10-17 | 2022-08-09 | Sicpa Holding Sa | PROCESS FOR PRODUCING AN OPTICALLY VARIABLE SECURITY FEATURE, USE OF A CYLINDER FOR A GRAVURE PRINTING PROCESS, OPTICALLY VARIABLE SECURITY FEATURE AND USE THEREOF, SECURITY DOCUMENT AND METHOD FOR PRODUCING IT |
| CN103702021A (en) * | 2013-12-29 | 2014-04-02 | 广州视声电子科技有限公司 | Currency detection camera |
| EP3265520B1 (en) * | 2015-07-20 | 2022-06-15 | Hewlett-Packard Development Company, L.P. | White inks |
| JP6365800B2 (en) * | 2016-02-25 | 2018-08-01 | 大日本印刷株式会社 | Combination of thermal transfer sheet and transfer object, method for forming printed matter, and thermal transfer sheet |
| CN106935131A (en) * | 2017-03-30 | 2017-07-07 | 成都印钞有限公司 | A kind of anti-fake two-dimension code |
| CN106945425B (en) * | 2017-05-03 | 2018-09-28 | 厦门汉盾光学科技有限公司 | The security article of marked product security information |
| CN107499013A (en) * | 2017-09-26 | 2017-12-22 | 厦门汉盾光学科技有限公司 | A kind of security article and preparation method thereof |
| CN117405090A (en) * | 2020-02-06 | 2024-01-16 | 大日本印刷株式会社 | Marker, method for producing marker, and detection object |
| CN113459693B (en) * | 2021-07-05 | 2023-05-12 | 中钞印制技术研究院有限公司 | Anti-counterfeiting structure, anti-counterfeiting article and preparation method of anti-counterfeiting structure |
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Effective date of registration: 20210427 Address after: 100070 8th floor, building 2, No.5 Zhonghe Road, Fengtai Science City, Fengtai District, Beijing Patentee after: China Banknote Printing Technology Research Institute Co.,Ltd. Patentee after: CHINA BANKNOTE PRINTING AND MINTING Corp. Address before: 100070 science Road 5, Beijing, Fengtai District Patentee before: SECURITY PRINTING INSTITUTE OF PEOPLE'S BANK OF CHINA Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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Address after: 100070 8th floor, building 2, No.5 Zhonghe Road, Fengtai Science City, Fengtai District, Beijing Patentee after: China Banknote Printing Technology Research Institute Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100070 8th floor, building 2, No.5 Zhonghe Road, Fengtai Science City, Fengtai District, Beijing Patentee before: China Banknote Printing Technology Research Institute Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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