CN102935769A - 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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- CN102935769A CN102935769A CN2012104917307A CN201210491730A CN102935769A CN 102935769 A CN102935769 A CN 102935769A CN 2012104917307 A CN2012104917307 A CN 2012104917307A CN 201210491730 A CN201210491730 A CN 201210491730A CN 102935769 A CN102935769 A CN 102935769A
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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, relate in particular to a kind of security article that uses the pairing of metal effect ink and photochromatic printing ink to print the anti-counterfeiting information mark, the invention still further relates on this security article the printing method as the anti-fake mark of security information.
Background technology
Photochromatic printing ink (OVI) is the printing ink that a kind of Show Color can change with the difference of viewing angle, effect shows that the mark (comprising literal, pattern etc.) that utilizes this printing ink to print or be coated with also can produce with the difference of viewing angle change color, be called " changeable colors along with angle " or " with the angle variable color ", the user is easy to differentiate by the change realization character of observing color, is a kind of false proof means of the public of high technology content.Because the feature of this changeable colors along with angle is difficult to copy, therefore the use of all kinds of photochromatic printing inks occupies critical role in public's anti-counterfeiting technology.
Although photochromatic printing ink can provide the antiforge function of higher counterfeit difficulty, but when using separately, the recognition property that offers the public is exactly that the color of typographic(al) mark can change with the change of viewing angle, when not with reference to the time, such change color is often out in the cold easily, is difficult for observing.For this problem, the method that the printing ink pairing that at present existing document proposes that two kinds of different optically variable pigments are made is used, so that two kinds of printing ink print be marked at a specific incidence angle time show same hue, and when all other incidence angles, show the color that differs from one another.But, use simultaneously two kinds of different photochromatic printing inks can only in a very narrow viewing angle scope, realize the coupling of color, be not easy to the public and observe identification; And this scheme need to develop the optically variable pigments that is specifically designed to pairing, realizes high expensive, limited the feasibility of practical application.Other has document to disclose the scheme that the pairing of diffraction type photochromatic printing ink and common ink is used, two kinds of printing ink have identical matching color under an incidence angle, incidence angle at other does not have color-match, yet because diffraction type photochromatic printing ink self can only demonstrate the rainbow discoloration effect of low chroma, observation ability and method to the public have certain requirement, and the impact of determining also may be subject to environment of observation (for example light) of its color changeable effect, so antifalse effect is not good.Above two schemes has only been considered the color-match of two kinds of printing ink and has not been considered other appearance effect of two kinds of printing ink, because photochromatic printing ink has obvious flicker effect, do not consider the coupling of other appearance effect if only realize the color-match of two kinds of printing ink, the observer can find that still the two is not same printing 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 of the higher false proof grade of needs, still have potential safety hazard.
So, select more suitably the printing ink pairing, it is observed that the color changeable effect of photochromatic printing ink is easier to, and also can increase the forgery difficulty of goods simultaneously, obviously also needs further exploration.
Summary of the invention
Technical problem underlying solved by the invention is to provide the security article of the false proof and professional false proof effect of a kind of public of having, its security information that has is used by photochromatic printing ink and metal effect ink pairing and is printed, not only make the light of anti-counterfeiting mark become the feature public's identification of being more convenient for, increased simultaneously the imitation difficulty.
The present invention also provides the method for printing anti-fake mark at security article, by selection and the coupling to photochromatic printing ink and metal effect ink, make anti-fake mark have the composite anti-fake effect, all be improved thereby make public's identity of security article and copy difficulty.
The present invention also provides the pairing printing ink that is used for printing anti-fake mark, and this pairing printing ink is comprised 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, so that the composite anti-fake effect to be provided.
For explaining conveniently, the present invention illustrates respectively the content that employing metal effect ink and photochromatic printing ink are printed at the face of undertaking the printing of with " the first mark " and " the second mark ", can be the pattern that designs in advance, literal, symbol etc.; Unless explanation is arranged, printing ink of the present invention " printing zone " is interpreted as the zone that the respective markers of the selected printing ink printing of above use is positioned at, can refer to the pattern (comprising any imprint such as literal or figure) printed, also can refer to for the setting regions of printing respective markers.
Photochromatic printing ink not only shows with the angle variable color, and himself having flicker effect also is 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 two zoness of different being printed on security article or the different piece of the same area are used in the pairing of metal effect ink and photochromatic printing ink, in the certain angle scope, observe, two kinds of printing ink appearance effect can show close, the conversion certain angle is observed, utilize the color of metal effect ink printing constant, utilize another part of photochromatic printing ink printing that change color then occurs.By the paired observation of two kinds of ink printing marks, can strengthen the public anti-fake function of product, be convenient to public's identification, increase and forge difficulty.
So, the present invention at first provides a kind of security article, be printed with the mark that comprises identifying information on the face of undertaking the printing of of these goods, described mark comprises the first mark that adopts the metal effect ink printing and the second mark that adopts photochromatic printing ink to print at least, observe under the visible light, the first mark shows close or identical appearance effect when second is marked at the first viewing angle, change into the second viewing angle after, the color of the first mark is substantially constant, but the color of the second mark obviously changes.
Described the first mark and the second mark can be positioned at the different piece of same pattern; Perhaps, the first mark and the second indicia distribution can design and print in different pattern or zone as required.
Security article provided by the invention is observed under visible light, and the first mark shows identical or close appearance effect when second is marked at the first viewing angle, that is, the two can be considered same printing ink and prints; 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 change color of anti-fake mark easily, has also promoted the security performance of goods simultaneously.Security article provided by the invention has been realized the color-match of two kinds of marks in wider viewing angle, be easy to the public and observe identification.And the first mark and the second mark have gay colours and close flicker level, can be considered by a kind of printing ink to print when the first viewing angle is observed, and therefore than the prior art scheme, have more improved the false proof level of the public of security article.
Security article provided by the invention, be used for printing the metal effect ink of the first mark, can be for have the printing ink of infrared signature in the near infrared spectrum district, in the specific embodiments, the first mark has INFRARED ABSORPTION or infrared external reflection or the infrared not reflectance signature that do not absorb, and above-mentioned infrared signature refers to show in the near infrared spectrum district of 750-1100nm obvious Absorption Characteristics, reflectance signature or do not absorb not reflectance signature.If having INFRARED ABSORPTION or infrared external reflection feature, the mark of printing further provides professional anti-counterfeiting characteristic for this security article, namely, place simultaneously the near infrared region to detect the first and second marks, can also detect specific infrared signature, for example, in certain wave-length coverage, can detect default characteristic infrared absorption, can be that two marks have absorption characteristic (display gray shade value is identical under the infrared light) simultaneously, perhaps has obviously opposite infrared characteristic (gray value is obviously different under the infrared light), false proof and the professional anti-counterfeiting characteristic of the public is combined, significantly improved the imitation difficulty.
Security article provided by the invention can comprise the various goods that need safety verification such as money, marketable securities, bill, certificate card, safety line, antifalsification label, false-proof film or documentary evidence.
The present invention also provides the method for printing anti-fake mark at security article, the method comprises that employing metal effect ink and photochromatic printing ink are as color matching printing ink, on the face of undertaking the printing of of security article, print respectively the first mark and the second mark, observe under the visible light, show close or identical appearance effect when making the first mark and second being marked at the first viewing angle, 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 respectively the pairing that engraving intaglio printing ink, ink for screen printing, shadow are write gravure ink or coating printing ink, and the two is identical or different, that is, can respectively do for oneself carved gravure mark, silk marks, shadow of described the first mark and the second mark write gravure mark or coating mark.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 printings respectively type metal effect printing ink and photochromatic printing ink according to actual conditions.Preferably, metal effect ink of the present invention and photochromatic printing ink can be selected the engraving intaglio printing ink with obvious feel, make security article also possess simultaneously the dual public's anti-counterfeiting characteristic of vision and sense of touch, more are 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 that metal effect ink is printed simultaneously, under visible light, two zones are observed can be considered in certain viewing angle scope and are used same printing ink to print and the demonstration gay colours; After changing viewing angle, two field color form sharp contrast.This security article has been realized the outward appearance coupling of two kinds of marks and has been had chromatic colour in wider viewing angle, given prominence to the visual effect of photochromatic printing ink, be easy to observe and can stay deep impression to the observer, thereby improved the false proof level of the public of security article.
2, security article of the present invention can also use metal effect ink and the photochromatic printing ink with infrared characteristic, when the change color characteristic differentiation is provided, carry out machine-readable detection by special inspecting equipment, bank machine easy to use is carried out the true and false to security article and is differentiated.
3, security article of the present invention has public's anti-counterfeiting characteristic and machine-readable anti-false feature concurrently, has significantly improved the imitation difficulty, has improved the integrated anti-counterfeit level of security article.
Description of drawings
Fig. 1 is a kind of floor map that comprises the security article of green/blue photochromatic printing ink and green metal effect printing ink impressing pattern of the present invention.
Fig. 2 is a kind of floor map that comprises the security article of gold/green light sensitive ink and golden metal effect ink impressing pattern of the present invention.
Fig. 3 is a kind of floor map that comprises green/blue photochromatic printing ink and the security article of the green metal effect printing ink impressing pattern with infrared absorption characteristic of the present invention.
Fig. 4 is a kind of floor map that comprises gold/green light sensitive ink and the security article of the green metal effect printing ink impressing pattern with infrared external reflection characteristic of the present invention.
Fig. 5 is a kind of floor map that comprises 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 that comprises the security article of green/magenta photochromatic printing ink and green metal effect printing ink impressing pattern of the present invention.
Fig. 7 is a kind of floor map that comprises the security article of green/blue photochromatic printing ink and green metal effect printing ink impressing pattern of the present invention.
Fig. 8 is a kind of comprising by the security article floor map of gold/green light sensitive ink with the common opened window safety line of making of the golden metal effect ink with infrared absorption characteristic of the present invention.
The specific embodiment
Security article provided by the invention, at least have on its face of undertaking the printing of and utilize photochromatic printing ink and metal effect ink pairing to use the first mark and the second mark of printing, and the mark of two kinds of printing ink printings can show the coupling of appearance effect in certain viewing angle scope.
Conventional according to industry, the appearance effect of photochromatic printing ink mainly comprises two aspects, at first is to have the color that changes with the visual angle, can demonstrate certain flicker effect in addition.This two specific character can be used respectively chromatic value (L
*a
*b
*) and flicker value (SG) come quantitative expression, it is measured according to the industry universal method and uses the multi-angle colour photometer to realize.
Security article provided by the invention is by the use of two kinds of pairing printing ink, resulting the first mark and the second mark, in certain viewing angle scope, be shown as identical or close appearance effect, identical or the close appearance effect of described demonstration refers to the public's several indifferences that detect by an unaided eye, and can be considered as same printing ink and print.The present invention's alleged " the first viewing angle " and " the second viewing angle " except specifying, all are interpreted as certain viewing angle scope, but not certain specific viewing angle.
Among the present invention, further use aberration (⊿ E) to represent the color distortion in two kinds of ink printing zones, utilize flicker value difference (⊿ SG) to represent the flicker level difference in two kinds of ink printing zones:
When the first viewing angle is the perpendicular observation, show that close or identical appearance effect refers to, the following parameter difference of measuring the first mark and the second mark in this first viewing angle satisfies condition: look poor ⊿ E is not more than 3, and flicker value difference ⊿ SG is not more than 1.5; When the first viewing angle is observed for basically looking squarely, show that close or identical appearance effect refers to, measure the first mark and satisfy condition with the following parameter difference of the second mark in this first viewing angle: look poor ⊿ E is not more than 5, and flicker value difference ⊿ SG is not more than 1.5.
In specific embodiments of the present invention, described the first viewing angle refers to the perpendicular observation, and described the second viewing angle refers to basically look squarely observation; Perhaps, described the first viewing angle refers to basically look squarely observation, and described the second viewing angle refers to the perpendicular observation.That is, observe under visible light, to observe or look squarely when observing appearance effect identical for the perpendicular that is marked at of metal effect ink and photochromatic printing ink printing, and the observer can't distinguish the two; After changing viewing angle, use the field color of photochromatic printing ink printing to change, and use the marker color of metal effect ink printing constant, thereby demonstrate obvious color distortion.Among the present invention, perpendicular is observed and is referred to viewing angle and substrate surface vertical line angle at 0 °-15 °, basically looks squarely to observe to refer to that viewing angle and substrate surface vertical line angle are at 50 °-70 °.Owing to non-discoloring mark is arranged as color benchmark relatively, the visual effect of photochromatic printing ink typographic(al) mark is more remarkable, simultaneously also be conducive to observer's notice is directed on the anti-fake mark, make that the diagnostic characteristics of security article is easier to be identified by the public, thereby improved the false proof level of the public of security article.
During visualization, the first mark of security article provided by the invention and the second mark can realize in wider viewing angle scope that the outward appearance of two kinds of marks mates substantially, for this matching effect of quantificational expression, can in this angle automatching scope, choose a typical angle and use instrument to measure so that the pairing effect is carried out relatively.Measurement for the marking appearance effect can use the multi-angle colour photometer to finish according to the known method of the industry.This instrument adopts 45 ° of direct projection illuminations, respectively in-15 °, 15 °, 25 °, 45 °, 75 ° and 110 ° of six angular surveying colors.Measured angular wherein is defined as the angle with the lighting source specular angle, to the illumination light direction rotation be on the occasion of.This instrument can also characterize by measuring flicker value the flicker effect of printing ink.The result who records under instrument-15 ° measured angular can be similar to and represent the observing effect of human eye when looking squarely, and can be similar to effect when representing human eye at right-angle view in the result who records under 45 ° of measured angular of instrument.Unless otherwise specified, all adopt the method to measure marking appearance effect and variation thereof among the present invention.
In the present invention, consistent for making measurement standard, the close or identical criterion of appearance effect of two marks referred to the measurement result under 45 ° of measured angular when perpendicular was observed; Close or the identical criterion of appearance effect of two marks refers to the measurement result under-15 ° of measured angular when basically looking squarely observation.
Because the second mark that adopts photochromatic printing ink to print has obvious characteristic infrared absorption, in order further to improve the integrated anti-counterfeit performance, the first mark also can have infrared signature, this infrared signature refers to show obvious Absorption Characteristics or reflectance signature in the near infrared spectrum district, and the two is in the basic identical or obvious difference of infrared reflectivity of determining wave-length coverage, thereby gives the more higher leveled two wires of goods antiforge function.Place the first and second marks of printing under the infrared light and observe this moment, can show basic identical or visibly different gray value.
Described the first mark has characteristic infrared absorption and refers in particular at the infrared spectral region of 750-1100nm wavelength and have the strongest absworption peak (place under the infrared light and observe, can show obvious high gray value).
This moment in the near infrared spectrum district certain specific wavelength place, the first and second marks of two kinds of printing ink printing areas have essentially identical reflectivity, namely observation and expression goes out essentially identical gray value (infrared signature is identical) under infrared light.Essentially identical reflectivity described herein refer to first and second be marked at detect that reflection differences is not higher than 6% under the wavelength.Unless otherwise specified, the first mark described in the present invention has the reflectivity that characteristic infrared absorption refers to maximum absorption wave strong point in the 750-1100nm wave-length coverage and (is placing and observing approximate black under the infrared light) below 30%.
Described the first mark have the infrared external reflection feature refer to the reflectivity at maximum reflection wavelength place in the 750-1100nm wave-length coverage be higher than 70%(place under the infrared light observe broken white).
This moment in the near infrared spectrum district certain specific wavelength place, the first and second marks of two kinds of printing ink printing areas have visibly different reflectivity, namely observation and expression goes out visibly different gray value under infrared light, forms a sharp contrast.Visibly different reflectivity described herein refer to first and second be marked at detect that reflection differences is higher than 30% under the wavelength.
According to the solution of the present invention, when the first mark does not have above-mentioned infrared character, namely, adopt the infrared metal effect ink of reflectance signature that do not absorb not to print the first mark, can be that perpendicular is when observing for: the first viewing angle to the observation caliber of resulting security article, show that close or identical appearance effect refers to, the following parameter difference of measuring the first mark and the second mark under this first viewing angle satisfies condition: look poor ⊿ E is not more than 3, and flicker value difference ⊿ SG is not more than 1; When the first viewing angle is observed for basically looking squarely, show that close or identical appearance effect refers to, the following parameter difference of measuring the first mark and the second mark under this first viewing angle satisfies condition: look poor ⊿ E is not more than 4, and flicker value difference ⊿ SG is not more than 1.
On the kind of printed ink, can respectively do for oneself carved gravure mark, silk marks, shadow of described the first mark and the second mark write gravure mark or coating mark etc.Wherein the preferred engraving intaglio printing ink with obvious feel that uses makes security article possess simultaneously vision and the dual public's anti-counterfeiting characteristic of sense of touch, more is 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 that needs safety guarantee.
The present invention also provides the method for printing above-mentioned anti-fake mark at security article, the method comprises that employing metal effect ink and photochromatic printing ink are as color matching printing ink, on the face of undertaking the printing of of security article, print respectively the first mark and the second mark, observe under the visible light, the first mark shows identical or close appearance effect when second is marked at the first viewing angle, 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 that changes with the angle, also can manifest certain blinking characteristic, therefore the printing ink with its pairing use must all will closely with photochromatic printing ink just can make the two show close visual effect aspect these two.The inventor studies show that, metal effect ink can satisfy above requirement, also is based on such understanding, and the present invention has adopted metal effect ink and photochromatic printing ink to be used for printing as color matching printing ink and made the security article with higher false proof level.
Effect pigment can provide suitable flicker effect and metallic luster for printing ink, and the color that the common pigments that comprises in the metal effect ink can further be adjusted printing ink is complementary itself and the photochromatic printing ink that sets in the viewing angle scope.Pigment content total in the printing ink can require to determine according to the appearance effect of photochromatic printing ink and the printability of printing ink usually.In the described metal effect ink, in the printing ink gross mass, include the effect pigment of 6-35% and the transparent or semitransparent pigment of 0.5-4% (such as azo or phthalocyanines organic pigment or inorganic pigment etc.), preferably use the pigment that covering power is weak, have good transparency, covered with the flicker effect that prevents effect pigment.
The inventor studies show that, photochromatic printing ink has stronger flicker effect and compares chromatic colour, and its flicker value that records can reach between the 7-9, and the chroma value reaches 30-40 under 45 ° of measured angular.For realizing and the optimal appearance matching effect of photochromatic printing ink that the relative scale of the effect pigment that comprises in the metal effect ink also is one of influence factor of further needs consideration.For flicker level and the photochromatic printing ink that makes metal effect ink is complementary, its effect pigment that comprises should select to have the pigment of stronger flicker effect, such as can select that the companies such as Basf, Merck produce take thin slices such as glass, mica, aluminium oxide, silica as base material, the effect pigment that outer clad metal or metal oxide form, perhaps they make up arbitrarily.In the specific embodiments of the present invention, the composition of effect pigment specifically can comprise: the effect pigment 10-40% that coats take glass as base material, the effect pigment 10-70% that coats take mica as base material, the effect pigment 10%-40% that coats take aluminium oxide as base material, the effect pigment 0%-60% that coats take silica as base material, described composition is based on effect pigment gross mass included in this printing ink, and each mass percent sum that forms reaches 100%.Because the color chroma of effect pigment self is lower, for bright-colored degree and the photochromatic printing ink that makes metal effect ink is complementary, to increase chroma be favourable to a certain amount of transparent or semitransparent pigment of interpolation in metal effect ink.The inventor studies show that, the transparent or semitransparent pigment that adds 0.5-4% in metal effect ink is conducive to make its bright-colored degree and photochromatic printing ink quite not to affect again simultaneously the flicker effect of metal effect ink.
In addition, the effect pigment of selecting also needs with photochromatic printing ink close on grain size, and the two kinds of printing ink that use that are beneficial to realize match have close appearance effect.The average grain diameter of described effect pigment is preferably the 5-70 micron, preferred 10-40 micron.The particle diameter of effect pigment is associated with flicker level and the printability of China ink layer, usually, the flicker of the larger printing ink China ink of the particle diameter of pigment layer 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 China ink layer brightness and printability, make the information (pattern) of printing have metal effect outward appearance blinking characteristic.
In a word, the present invention has proposed to utilize metal effect ink and photochromatic printing ink pairing to use first, provide and more be easy to the false proof means (color changeable effect of photochromatic printing ink can be set off by fine) identified, but also introduced simultaneously the unique security feature of metal effect ink, reached and make security article be easy to be identified by the public, be difficult to the purpose of being forged by the fake producer.
Photochromatic printing ink has stronger infrared absorption characteristic, and normal metal effect ink generally has faint INFRARED ABSORPTION effect, it is the infrared not reflecting effect that do not absorb of the present invention, its ratio of infrared absorption intensity obviously is weaker than photochromatic printing ink, and therefore pairing can be played good public's antifalse effect after using.In order to make security article have simultaneously the false proof and professional anti-counterfeiting characteristic of the public, in specific embodiments of the present invention, can also have by use the metal effect ink of INFRARED ABSORPTION or reflectance signature, further promote the integrated anti-counterfeit function of security article.
For making metal effect ink have the infrared external reflection characteristic, it is observed under infrared light with photochromatic printing ink form obvious contrast, effect pigment wherein needs the preferred pigment with infrared external reflection characteristic that uses, as far as possible few pigment with having infrared absorption characteristic.When employed metal effect ink has the infrared external reflection feature, the infrared signature that it shows in the near infrared spectrum district is obviously different from photochromatic printing ink, can be presented as, in near-infrared wavelength or wave-length coverage that certain is determined, one of the mark that two kinds of printing ink provides shows as obvious reflection, and another shows as obvious absorption.At this moment, place simultaneously the near infrared region to detect the first and second marks of printing, can detect specific infrared signature, for example, metal effect ink and photochromatic printing ink have visibly different infrared characteristic in the infrared spectral region of 750-1100nm, the zone of the two printing or coating presents respectively low gray value (approaching white) and high gray value (near black) under infrared light, form sharp contrast.
Metal effect ink also can have the infrared absorption characteristic close with photochromatic printing ink, and select the stronger effect pigment of INFRARED ABSORPTION to be more conducive to embody simultaneously metallic luster and the infrared signature of printing ink this moment as far as possible.Because the ratio of infrared absorption intensity of effect pigment obviously is weaker than optically variable pigments, has the infrared absorption characteristic close with photochromatic printing ink for making metal effect ink, also preferably in metal effect ink, add a certain amount of infrared absorbing material.In specific embodiments, described metal effect ink for printing the first mark has characteristic infrared absorption in the near infrared spectrum district, this moment, it comprised the infrared absorbing material that accounts for this printing ink gross weight 1-10% and the infrared conditioning agent of 0.1-5% in forming, and the reflectivity that the use of this metal effect ink by infrared absorbing material shows near infrared region maximum absorption wave strong point is lower than 30%, described infrared conditioning agent is for showing as INFRARED ABSORPTION and the material with blinking characteristic in the near infrared region.The metal effect ink that use this moment has increased infrared signature on the basis of existing technology as the false proof means in two wires, adopt the pairing of this metal effect ink with infrared signature and photochromatic printing ink to use, in the change color that has set off the photochromatic printing ink marking, also provide professional anti-counterfeiting characteristic.
Preferably, for above-mentioned the first mark with INFRARED ABSORPTION or the printing of infrared external reflection characteristic metal effect ink, the second mark that itself and photochromatic printing ink are printed realizes that the appearance effect coupling need meet the following conditions:
The following parameter difference that the close criterion of appearance effect of two marks referred to measure the two when perpendicular was observed under the 45 ° of measured angular: Se Cha ⊿ E that need satisfy condition is not more than 3; Flicker value difference ⊿ SG is not more than 1.5;
Basically look squarely the close criterion of appearance effect of two marks when observing refers to measure the two under-15 ° of measured angular the following parameter difference: Se Cha ⊿ E that need satisfy condition and be not more than 5; Flicker value difference ⊿ SG is not more than 1.5.
For flicker effect and the bright-colored degree that does not affect metal effect ink, the hiding power value of the infrared absorbing material that comprises in the metal effect ink of the present invention generally should be lower than 50%, preferably be lower than 38%, make infrared absorbing material in visible-range, have the good transparency.
Illustrate that such as the front metal effect ink with infrared signature used in the present invention has characteristic infrared absorption and refers in particular at the infrared spectral region of 750-1100nm wavelength and have the strongest absworption peak in the near infrared spectrum district.This absworption peak can show as the arrowband and absorb, and also can show as wide cut and absorb.
Satisfying on the basis of these conditions, in the 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 compounds, triarylamine compounds etc., concrete example is such as the two perylene compounds of relevant tetramethyl acid imide, three arylamine sulfonic acid salt compounds etc., and when using these infrared absorbing materials, its addition in printing ink generally can be controlled in 10%.
Preferably, comprise during described metal effect ink forms that the infrared absorbing material that accounts for this printing ink gross weight 1-6% can satisfy the INFRARED ABSORPTION effect required with the photochromatic printing ink pairing (observe the two and have identical gray value under infrared light).
In the metal effect ink with characteristic infrared absorption used in the present invention, also can comprise suitable infrared conditioning agent, this infrared conditioning agent shows as INFRARED ABSORPTION near infrared region, and has certain flicker effect, content is 0.1-5% in printing ink, preferred 0.1-3%.An amount of infrared conditioning agent can help infrared absorbing material to provide in metal effect ink can satisfy the infrared characteristic of anti-counterfeiting information identification and good materialization patience.(for example addition is 1-10% when having used infrared conditioning agent, preferred 1-6%), infrared conditioning agent and the infrared absorbing material content summation in printing ink generally can be no more than 15%(based on the gross weight of printing ink), this infrared conditioning agent can comprise the coating tin oxide take mica as base material, coat antimony doped tin oxide etc. take mica as base material, the preparation method of this infrared conditioning agent also can be with reference to the related content of International Patent Application WO 0043456, certainly, although this has formerly put down in writing acquisition and the some properties of this infrared conditioning agent in the disclosed document, does not instruct it on the impact of the infrared characteristic of metal effect ink.
The compositional system of metal effect ink comprises the conventional raw materials 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%, each summation that forms should be 100% in the made printing ink.
Particularly, the binder during above-mentioned printing ink forms can be the adhesive force such as alkyd resins, phenolic resins, polyurethane resin, vinyl chloride-vinyl acetate resin resinae preferably.Filler can be the good nano-sized filler of the transparency, such as in nano-calcium carbonate, nano silicon, the nano-aluminium oxide etc. one or more, generally addition can for 1-15%(based on total weight).Auxiliary agent then comprises wax powder, drier, solvent, surfactant, light trigger (for UV printing 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 the non-ionic surface active agent, and other auxiliary agent is not described in detail at this.Be simplicity of exposition, in the ink formulations of the embodiment of the invention with the composition of binder, filler, surfactant and wax referred to as " printing 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 respectively the pairing that engraving intaglio printing ink, ink for screen printing, shadow are write gravure ink or coating printing ink, and the two is identical or different, that is, can respectively do for oneself carved gravure mark, silk marks, shadow of described the first mark and the second mark write gravure mark or coating mark.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 printings respectively type metal effect printing ink and photochromatic printing ink according to actual conditions.
In a word, security article provided by the invention has the false proof and professional false proof two kinds of anti-counterfeiting characteristics of the public simultaneously, is more conducive to public's identification, has also significantly improved the imitation difficulty simultaneously.
Employed photochromatic printing ink is the product of being purchased in following examples, for example can buy from Sicpa company.
The preparation technology of metal effect ink can be, selected effect pigment under agitation is mixed with prior rolling good base oil, Ji Mo, for example, preparation process is: at first with the in proportion weighing mixing of binder, filler, wax and surfactant, stir pre-dispersed after, be rolled into base oil, again with pigment, infrared absorbing material respectively with base oil mixed rolling Cheng Jimo, in proportion base oil, Ji Mo and effect pigment are fully mixed by high-speed stirred at last.Except specified otherwise arranged, the metal effect ink in following examples all can according to or suitably adjust and prepare with reference to described method.
Fig. 1 is one embodiment of the invention schematic diagrames, and pattern is designed to literal " dragon ", adopts carved gravure wiring printing to form.The printing of green/blue photochromatic printing ink is used in pattern the first half zone 1, and green metal effect ink printing is used in the latter half zone 2.
Green metal effect ink formulations (% by weight):
The composition of the effect pigment in the above-mentioned prescription: the effect pigment 20-35% that coats take glass as base material, the effect pigment 50-70% that coats take mica as base material, the effect pigment 10%-30% that coats take aluminium oxide as base material, the effect pigment 0%-8% that coats take silica as base material, described composition is based on effect pigment gross mass included in this printing ink, and each mass percent sum that forms reaches 100%.
The preparation process of this printing ink is: at first binder, nano silicon, wax and dodecyl benzene sulfonate are rolled into base oil; Then with green pigment and base oil mixed rolling Cheng Jimo; At last described base oil, Ji Mo, effect pigment, drier and solvent fully are mixed and made into described printing ink by high-speed stirred.
When perpendicular was observed, zone 1 was identical with zone 2 equal shows green and other appearance effect; When looking squarely, zone 1 becomes blueness, and the color in zone 2 is constant, and the two forms the strikingly color contrast.
Two kinds of ink printing zones are as shown in table 1 in the parameters difference of right-angle view angle (45 °).
Table 1
| ⊿E | ⊿SG |
| 1.78 | 0.45 |
Fig. 2 is one embodiment of the invention, uses two different patterns of carved gravure printing.Wherein gold/green light sensitive ink printing is used in zone 3, and golden metal effect ink printing is used in zone 4.Golden metal effect ink prescription (% by weight):
Effect pigment in the above-mentioned prescription forms: the effect pigment 20-35% that coats take glass as base material, the effect pigment 20-35% that coats take mica as base material, the effect pigment 10%-30% that coats take aluminium oxide as base material, the effect pigment 20%-35% that coats take silica as base material, described composition is based on effect pigment gross mass included in this printing ink, and each mass percent sum that forms reaches 100%.
Make described printing ink according to the method similar to embodiment 1.
When perpendicular was observed, zone 3 all manifests gold with zone 4 and appearance effect is identical; Basically look squarely when observing, zone 3 becomes green, and regional 4 hue preservings are constant, and the two forms the strikingly color contrast.
Two kinds of ink printing zones are as shown in table 2 in the parameters difference of right-angle view angle (45 °).
Table 2
| ⊿E | ⊿SG |
| 1.49 | 0.36 |
Fig. 3 is one embodiment of the invention, adopts the carved gravure printing.Wherein the green/blue photochromatic printing ink is used in zone 5, and the green metal effect printing ink with INFRARED ABSORPTION effect is used in zone 6.
Green metal effect ink formulations (% by weight):
Infrared conditioning agent in the above-mentioned prescription is that mica coats antimony doped tin oxide.Make the printing ink of present embodiment according to the method similar to embodiment 1.
When perpendicular was observed, zone 5 was identical with zone 6 equal shows green and appearance effect; Basically look squarely when observing, zone 5 becomes blueness, and the color in zone 6 is constant, and the two forms the strikingly color contrast.Near zone 5 and the zone 6 near infrared spectrum reflectivity 850nm is about 15%, observes under infrared light, and zone 5 and zone 6 manifest essentially identical high gray value.
Two kinds of ink printing zones are as shown in table 3 in the parameters difference of right-angle view angle (45 °).
Table 3
| ⊿E | ⊿SG |
| 1.75 | 0.68 |
Fig. 4 is one embodiment of the invention, and zone 7 and zone 8 all adopt the silk-screen mode to print.Wherein gold/green light sensitive ink is used in zone 7, and the green metal effect printing ink with infrared external reflection characteristic is used in zone 8.
Green metal effect ink formulations (% by weight):
Basically look squarely when observing, zone 7 is identical with zone 8 equal shows green and appearance effect; When perpendicular was observed, zone 7 became gold, and the color in zone 8 is constant, and the two forms the strikingly color contrast.Near zone 7 infrared region spectral reflectivity 850nm is about 20%, and near zone 8 infrared region spectral reflectivity 850nm is about 80%; Observe under infrared light, zone 7 shows high gray value and manifests low gray value with zone 8 that the two forms a sharp contrast.
Two kinds of ink printing zones are as shown in table 4 in the parameters difference of looking squarely viewing angle (15 °).
Table 4
| ⊿E | ⊿SG |
| 3.72 | 1.2 |
Embodiment 5
Fig. 5 is one embodiment of the invention, and zone 9 adopts the silk-screen mode to print, and zone 10 adopts the carved gravure mode to print.Wherein the green/blue photochromatic printing ink is used in zone 9, and blue metal effect ink is used in zone 10.
Blue metal effect ink prescription (% by weight):
Effect pigment in the above-mentioned prescription forms and specifically comprises: the effect pigment 35-55% that coats take glass as base material, the effect pigment 0-8% that coats take mica as base material, the effect pigment 50%-70% that coats take aluminium oxide as base material, described composition is based on effect pigment gross mass included in this printing ink, and each mass percent sum that forms reaches 100%.Make described printing ink according to the method similar to embodiment 1.
Basically look squarely when observing, zone 9 all manifests blueness with zone 10 and appearance effect is identical; When perpendicular was observed, zone 9 became green, and the color in zone 10 is constant, and the two forms the strikingly color contrast.
Two kinds of ink printing zones are as shown in table 5 in the parameters difference of looking squarely viewing angle (15 °).
Table 5
| ⊿E | ⊿SG |
| 3.56 | 0.86 |
Embodiment 6
Fig. 6 is one embodiment of the invention, and zone 11 is the opened window safety line of green/magenta photochromatic printing ink coating and printing, and zone 12 is for using the pattern of green metal effect ink silk screen printing printing.
Green metal effect ink formulations (% by weight):
When perpendicular was observed, zone 11 was identical with zone 12 equal shows green and appearance effect; Basically look squarely when observing, zone 11 becomes magenta, and the color in zone 12 is constant, and the two forms the strikingly color contrast.
Two kinds of ink printing zones are as shown in table 6 in the parameters difference of right-angle view angle (45 °).
Table 6
| ⊿E | ⊿SG |
| 2.89 | 0.96 |
Fig. 7 is one embodiment of the invention, and zone 13 adopts the silk-screen mode to print, and zone 14 employing shadows are write the gravure mode and printed.Wherein the green/blue photochromatic printing ink is used in zone 13, and green metal effect printing ink is used in zone 14.
Green metal effect ink formulations (% by weight):
When perpendicular was observed, zone 13 was identical with zone 14 equal shows green and appearance effect; Basically look squarely when observing, zone 13 becomes blueness, and the color in zone 14 is constant, and the two forms the strikingly color contrast.
Two kinds of ink printing zones are as shown in table 7 in the parameters difference of looking squarely viewing angle (15 °).
Table 7
| ⊿E | ⊿SG |
| 2.07 | 0.21 |
Fig. 8 is one embodiment of the invention, the zone 15 that joins and the zone 16 common opened window safety lines that form.Wherein gold/green light sensitive ink coating is used in zone 15, and the golden metal effect ink coating with infrared absorption characteristic is used in zone 16.
Golden metal effect ink prescription (% by weight):
Effect pigment in the above-mentioned prescription forms and specifically comprises: the effect pigment 30-45% that coats take glass as base material, the effect pigment 5-15% that coats take mica as base material, the effect pigment 10%-30% that coats take aluminium oxide as base material, the effect pigment 25%-40% that coats take silica as base material, described composition is based on effect pigment gross mass included in this printing ink, and each mass percent sum that forms reaches 100%.
Make described printing ink according to the method similar to embodiment 1.
When perpendicular was observed, zone 15 all manifests gold with zone 16 and appearance effect is identical; Basically look squarely when observing, zone 15 becomes green, and the color in zone 16 is constant, and the two forms the strikingly color contrast.Near the near infrared spectrum reflectivity of zone 15 850nm is about 20%, and near the near infrared spectrum reflectivity of zone 16 850nm is about 25%, observes under infrared light, and zone 15 and zone 16 manifest essentially identical high gray value.Two zones are as shown in table 8 in the parameters difference of right-angle view angle (45 °).
Table 8
| ⊿E | ⊿SG |
| 2.33 | 1.45 |
Claims (17)
1. security article, be printed with the mark that comprises identifying information on the face of undertaking the printing of of this security article, it is characterized in that: described mark comprises the first mark that adopts the metal effect ink printing and the second mark that adopts photochromatic printing ink to print at least, observe under the visible light, the first mark shows close or identical appearance effect when second is marked at the first viewing angle, 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.
2. security article according to claim 1, wherein, described the first mark and the second mark are positioned at the different piece of same printing zone; Perhaps, the first mark and the second indicia distribution are in the different printing zone.
3. security article according to claim 1, wherein, when the first viewing angle is the perpendicular observation, show that close or identical appearance effect refers to, the following parameter difference of measuring the first mark and the second mark in this first viewing angle satisfies condition: look poor ⊿ E is not more than 3, and flicker value difference ⊿ SG is not more than 1.5; When the first viewing angle is observed for basically looking squarely, show that close or identical appearance effect refers to, measure the first mark and satisfy condition with the following parameter difference of the second mark in this first viewing angle: look poor ⊿ E is not more than 5, and flicker value difference ⊿ SG is not more than 1.5.
4. security article according to claim 1 and 2, wherein, described the first viewing angle refers to that perpendicular observes, described the second viewing angle refers to basically look squarely observation; Perhaps, described the first viewing angle refers to basically look squarely observation, and described the second viewing angle refers to the perpendicular observation.
5. each described security article according to claim 1-4, wherein, described the first mark has INFRARED ABSORPTION or infrared external reflection or the infrared not reflectance signature that do not absorb.
6. security article according to claim 5, wherein, described the first mark has characteristic infrared absorption and refers to have the strongest absworption peak at the infrared spectral region of 750-1100nm wavelength.
7. security article according to claim 5, wherein, for having infrared not the first mark of reflectance signature that do not absorb, when the first viewing angle is the perpendicular observation, show that close or identical appearance effect refers to, the following parameter difference of measuring the first mark and the second mark in this first viewing angle satisfies condition: look poor ⊿ E is not more than 3, and flicker value difference ⊿ SG is not more than 1; When the first viewing angle is observed for basically looking squarely, show that close or identical appearance effect refers to, measure the first mark and satisfy condition with the following parameter difference of the second mark in this first viewing angle: look poor ⊿ E is not more than 4, and flicker value difference ⊿ SG is not more than 1.
8. each described security article according to claim 1-7, wherein, respectively do for oneself carved gravure mark, silk marks, shadow of described the first mark and the second mark write gravure mark or coating mark.
9. each described security article according to claim 1-8, described security article comprises money, marketable securities, bill, certificate card, safety line, antifalsification label, false-proof film or documentary evidence.
10. print the method for anti-fake mark at security article, the method comprises that employing metal effect ink and photochromatic printing ink are as color matching printing ink, on the face of undertaking the printing of of security article, print respectively the first mark and the second mark, observe under the visible light, show close or identical appearance effect when making the first mark and second being marked at the first viewing angle, 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.
11. method according to claim 10, the effect pigment that described metal effect ink for printing the first mark comprises is the effect pigment through coating, wherein, described effect pigment through coating is selected from: make up arbitrarily the effect pigment of the effect pigment that coats take glass as base material, the effect pigment that coats take mica as base material, the effect pigment that coats take aluminium oxide as base material, the coating take silica as base material or they.
12. method according to claim 11, wherein, the effect pigment that described metal effect ink for printing the first mark comprises comprises following composition: the effect pigment 0%-60% of the effect pigment 10%-60% that coats take glass as base material, the effect pigment 0%-70% that coats take mica as base material, the effect pigment 10%-60% that coats take aluminium oxide as base material, the coating take silica as base material, the gross mass content of described composition effect pigment in the printing ink is as benchmark, and each mass percent sum that forms reaches 100%.
13. method according to claim 10, wherein, described metal effect ink and photochromatic printing ink are selected from respectively engraving intaglio printing ink, ink for screen printing, shadow and write gravure ink or coating printing ink, and the two is identical or different.
14. each described method in the described metal effect ink, in the printing ink gross mass, includes the effect pigment of 6-35% and the transparent or semitransparent pigment of 0.5-4% according to claim 10-13.
15. each described method according to claim 10-14, wherein, described metal effect ink for printing the first mark has characteristic infrared absorption in the near infrared spectrum district, during forming, it has comprised the infrared absorbing material that accounts for this printing ink gross weight 1-10% and the infrared conditioning agent of 0.1-5%, and this metal effect ink is lower than 30% at the reflectivity of near infrared region maximum absorption wave strong point, the material of described infrared conditioning agent for showing as INFRARED ABSORPTION and have blinking characteristic in the near infrared region.
16. each described method according to claim 11-14, 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%, each summation that forms is 100% in the made printing ink.
17. method according to claim 15, wherein, described metal effect ink has characteristic infrared absorption and refers to have the strongest absworption peak at the infrared spectral region of 750-1100nm wavelength in the near infrared spectrum district.
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| CN104228380A (en) * | 2013-06-21 | 2014-12-24 | 广州市人民印刷厂股份有限公司 | Invisible unlocking type anti-counterfeiting method |
| WO2015051523A1 (en) * | 2013-10-11 | 2015-04-16 | Sicpa Holding Sa | Optically variable security threads and stripes |
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| CN115066591A (en) * | 2020-02-06 | 2022-09-16 | 大日本印刷株式会社 | Marker, method for producing marker, and object to be detected |
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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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