CN101746209B - Anti-counterfeiting element with light variation security pattern - Google Patents
Anti-counterfeiting element with light variation security pattern Download PDFInfo
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Abstract
The invention relates to an anti-counterfeiting element with a light variation security pattern; the surface of the anti-counterfeiting element is provided with the light variation security pattern with a fluctuation structure, the light variation security pattern can be observed to have different optical effect by utilizing an instrument along with the different observation angles; especially, the visible light emitted by the light variation security pattern can display different colors along with the different observation angles under the ultraviolet light, so as to lead the anti-counterfeiting element with the light variation security pattern to have two-line anti-counterfeiting characteristic which can be distinguished by the masses; in addition, beside the two-line anti-counterfeiting characteristic, the anti-counterfeiting element has other anti-counterfeiting characteristics which are combined with the infrared rays, so as to form the infrared anti-counterfeiting element with the composite anti-counterfeiting characteristics and further improve the counterfeiting difficulty of the anti-counterfeiting element; the invention further provides a valuable product with the anti-counterfeiting element.
Description
Technical field
The present invention relates to a kind of Security element with light variation security pattern for the protection of valuables; concrete relate to a kind of can directly the realization by printing; with the viewing angle difference, under corresponding instrument, can be observed the Security element of light variation security pattern different optical effect.The invention still further relates to the method for making the Security element with this light variation security pattern.
Background technology
Because constantly popularizing of color copy machine and imaging system and improving constantly of printing technology have caused increasing of forged banknote, passport and identity card phenomenon at present.For the purpose that prevents from palming off and forging, valuables such as license, marketable securities and best brand of product etc. often dispose Security element, in order to the authenticity of these valuables is tested, prevent simultaneously unwarranted copying.
Multiple false proof means have been developed and have adopted in field of anti-counterfeit technology, different demands according to product false proof, a plurality of grades have been comprised, such as provide masses directly by visually observe or simply the mode such as touch with regard to discernible masses false proof (claiming that also a line is false proof), utilizing simple instrument is that discernible two wires is false proof, the expert false proof (three lines are false proof) that need to utilize special instrument or device to identify.
From the angle of protection the Common Good, the anti-counterfeiting characteristic of being convenient to popular identification is very important.From visual characteristics of human eyes; along with the difference of viewing angle, the variation of pattern color easily attracts much attention, and can help masses to distinguish true from false rapidly and accurately; the personal economic interests that protection is popular, and from field the most widely, stop the circulation of counterfeit.
From the angle that prevents from forging, one line anti-counterfeiting characteristic is to hit forging the very large effect of having played, the wherein anti-counterfeiting technology of early development such as intaglio printing, watermark, entirely bury safety line, opened window safety line, colored fibre, microfilm of characters, just oppose that seal etc. is still playing a role.But these technology are because Applicative time is longer, and popularizing of modern color dub system is more and more frequent for the forgery of above-mentioned anti-counterfeiting characteristic in addition.Subsequently, the light argument part (OVD, OpticalVariable Device) that has with viewing angle change optical signature is developed gradually, and this feature can't realize by scanning, photograph or copy method, check to a great extent forgery.The light of popular easily identification and glad identification OVD becomes feature, and this also is conducive to compress the circulation of counterfeit; Need the very high technique of technology content, equipment and high economic input owing to making the OVD element simultaneously, so that a lot of adulterator hangs back.Application practice for many years shows, OVD is present stage one of comparatively effective false proof means.
The OVD element can be divided into iridescent type and non-iridescent type.Iridescent type OVD affects the fluctuation (interference and diffraction) of light, produces the continuity spectrum change of rainbow type, such as hologram.Non-iridescent type OVD affects the corpuscular property (reflection, refraction and scattering) of light, produces the spectrum change of noncontinuity, such as metal ink, latent image, refractive power color shifting ink etc.The gravure lines that method by gravure obtains can form surface relief structure, if one group of gravure lines then can make light reflectivity change with observation visual angle by the arranging of ad hoc fashion, produce light and become effect.Adopt this mode to realize that false proof element namely belongs to non-iridescent type OVD.
US Patent No. 4033059, US7028615 have obtained the pattern that light becomes effect by the regularity gravure lines of arranging.According to its disclosed technical scheme, during right-angle view, the pattern color homogeneous; When the inclination certain angle was observed, the gravure lines of different arragement directions were different to the reflection of light rate, and some regional lines reflectivity is higher than other zones, thereby realized that light becomes effect.But this light becomes effect and not obvious, and the observer is difficult to judge fast this anti-counterfeiting characteristic, particularly in the situation that insufficient light is difficult to observe light change feature.
On this basis, WO9002658 adopts inkless belling method to substitute gravure and makes lines, uses inkless gravure compacting to obtain relief fabric on the reflective substrate surface, and the light that forms bright dark variation becomes effect.It is very dull that this light becomes effect, also is difficult to identification under the darker environment of light.
The inkless belling method of matching background pattern can be improved this situation, such as CA1019012, US6283509, US6176521 etc.These methods have been expanded the kind of this class component, become effect but resulting Security element still lacks obvious light.
US4968064 proposes first the printing ink in the metal forming printing three kinds of colors alternately that are preset with different depressed areas figure, and belling then has the technical scheme of different color changeable effect features to form zones of different.The color changeable effect that this technical scheme is brought need to could be identified under very large viewing angle, is unfavorable for popular fast judgement, and needs very sufficient light source.
US5582103 proposes to print the multi-line background patterns that alternately changes by default figure, then form the technical scheme of Moire fringe by the inkless belling method of small angle, when oblique view, element can show as large-area monochromatic Moire fringe district alternative arrangement.Adopt the disclosed technical scheme of this patent to obtain security pattern, when observing, the very large viewing angle that need to tilt could be known identification, is unfavorable for popular fast identification and judgement.
In sum, utilize the surface relief structure of gravure lines, lines by exquisiteness are arranged, and matching background pattern, the light that produces non-rainbow type becomes feature certain application, but becomes effect from the light of element, and ubiquitous problem is that light change effect is obvious not, and need larger viewing angle, these factors are unfavorable for that ordinary populace judges fast and accurately.
And the marketable securities of present many countries are all utilizing fluorescence class substance by the ultraviolet excitation of certain wavelength, thereby the character of launching the visible light of certain color is used as anti-counterfeiting characteristic.The equipment prices such as fluorescent lamp of check fluorescent characteristics are cheap, and use the method for fluorescent lamp detection fluorescent characteristics simple, quick and easy, be easy to by sales counter employee and ordinary populace grasp and utilization, so fluorescent characteristics obtains common application as a kind of simple, quick and easy, reliable anti-counterfeiting characteristic in the marketable securities of many countries.But fluorescence class material is easily purchased available on market, and this has given fraud molecule opportunity, and it can utilize the fluorescent material preparation fluorescent ink that conveniently is easy to get, and fakes by offset printing or the little mode of printing of other cost.For present present situation, be necessary to promote the application mode of fluorescent material, by improving design level and typography, make the security pattern that adopts fluorescent ink printing acquisition have the light that is difficult to copy by common printed method and become feature, for example with angle variable color feature, the light change effect of OVD is embodied in the fluorescence falsification preventing pattern; Simultaneously, by in fluorescent ink in conjunction with the anti-fake material of other type, thereby obtain having the Security element that compound, as to strengthen security pattern fluorescence light becomes effect, this also will help to improve the antifalse effect of light variation security pattern.
Summary of the invention
Technical problem solved by the invention is to provide a kind of Security element with light variation security pattern, wherein, this light variation security pattern has obvious light and becomes effect, do not need larger viewing angle to identify, and it is not high to light source requirements, and this Security element is with the difference of viewing angle, under corresponding instrument, can be observed the different optical effect of this light variation security pattern, particularly with the difference of viewing angle, under uviol lamp, can be observed this pattern and launch the visible light of different colours, have the two wires anti-counterfeiting characteristic that just can identify by means of simple instrument.
Technical problem solved by the invention also is to provide a kind of valuables with above-mentioned Security element, and the light change effect by Security element has article and is easy to the popular anti-counterfeiting characteristic of identifying and accepting.
For solving the problems of the technologies described above, the present invention at first provides a kind of Security element, and its surface has into the light variation security pattern of relief fabric, and with the difference of viewing angle, utilizes instrument can observe this light variation security pattern and have different optical effects.
According to concrete technical scheme of the present invention, the optical effect of above-mentioned Security element can be the visible light that light variation security pattern is sent under ultraviolet light, with the difference of viewing angle, shows different colors.
According to concrete technical scheme of the present invention, the optical effect of above-mentioned Security element can be the visible light that light variation security pattern is sent under ultraviolet light, difference with viewing angle, show different colors, and light variation security pattern can also present all or part of anti-counterfeiting information of light variation security pattern under infrared identifier.
In Security element provided by the invention, light variation security pattern can be to be combined with offset printing by gravure, gravure or offset printing forms with the technique that inkless belling combines by at least two kinds of fluorescent inks.The fluorescent material that contains in the above-mentioned fluorescent ink under the exciting of ultraviolet light, sends the visible light of different colours.In Security element provided by the invention, can form corresponding fluorescent ink lines or fluorescent ink layer by above-mentioned technique, thereby form light variation security pattern.
At least two kinds or two kinds of fluorescent inks of the present invention are to distinguish according to the fluorescent material that comprises in the fluorescent ink; If contain the fluorescent material that can send the different colours visible light through ultraviolet excitation in two kinds of fluorescent inks, these two kinds of fluorescent inks just belong to different fluorescent inks so.
According to concrete technical scheme of the present invention, light variation security pattern can be comprised of the gravure lines that at least two kinds of gravure fluorescent inks form by gravure.Under natural daylight, what above-mentioned light variation security pattern showed is the global pattern that the gravure lines form, and its color is the appearance color of fluorescent ink.Under ultraviolet light, when vertical angle was observed, the gravure lines that different fluorescent inks forms excited by ultraviolet light, the visible light of emission different colours, and what observe is the mixed light of these visible lights.With Security element certain angle that tilts, when under ultraviolet light, observing, because the peculiar relief fabric of light variation security pattern itself, the part of observation side pattern projection can be blocked observer's part sight line, the visible light that the fluorescent ink that makes the observer can only observe this side bossing sends through ultraviolet excitation; When observing this light variation security pattern from opposite side, same, the observer only observes the visible light that this side bossing pattern sends through ultraviolet excitation.Under ultraviolet light, change the angle of inclination of Security element or change the angle of observing, the color of viewed visible light can change.As required, can also design light variation security pattern, make its formation have the pattern of certain rule, when observing under certain condition, not only can see the variation of visible light colors, can also observe the image-forming information of light variation security pattern, i.e. anti-counterfeiting information.By the combination of gravure lines, just can obtain to have with the light variation security pattern of angle variable color feature and the Security element with this light variation security pattern.
Preferably, in Security element of the present invention, the gravure lines can be formed by the chromatography of at least two kinds of gravure fluorescent inks, and, the both sides of gravure lines are formed by different gravure fluorescent inks, and for example, the both sides of gravure lines can be formed by the fluorescent ink that sends the different colours visible light under the exciting of ultraviolet light respectively, each side can be a kind of fluorescent ink, also can be the combination of multiple fluorescent ink.
In addition, in Security element of the present invention, every gravure lines that form light variation security pattern can be to be formed by different gravure fluorescent ink printings, and have different height by the gravure lines that different fluorescent inks forms.Under visible light, viewed is the appearance color of fluorescent ink.This Security element is under ultraviolet light, and when observing under vertical angle, viewed is the mixed light of the visible light that sends under ultraviolet excitation of the fluorescent material in the gravure lines; With the Security element certain angle that tilts, when perhaps observing Security element with certain angle, higher gravure lines can shelter from the sight line of part, thereby make the color of the formed mixed light of a part in the visible light that visible light that the observer only sees that the fluorescent material in the higher gravure lines sends and fluorescent material in the low gravure lines send; Along with the variation of angle, what of the sight line that is blocked also change, and the composition of the mixed light that the observer sees also changes thereupon, and the color of viewed light variation security pattern also can change; When viewing angle changed to higher gravure lines and blocks low gravure lines fully, the observer only saw the visible light that the fluorescent material in the higher gravure lines sends.Therefore whole Security element presents with angle variable color feature.
According to concrete technical scheme of the present invention, above-mentioned light variation security pattern can also comprise the offset printing layer that is formed by offset printing by a kind of offset printing fluorescent ink, and the gravure lines that at least a gravure fluorescent ink printing forms are positioned at the surface of this offset printing layer.Under visible light, viewed is the appearance color of fluorescent ink and offset printing fluorescent ink.This Security element is under ultraviolet light, and when observing under vertical angle, viewed is the mixed light of the visible light that sends under ultraviolet excitation of the fluorescent material in gravure lines and the offset printing lines; With the Security element certain angle that tilts, when perhaps observing Security element with certain angle, higher gravure lines can shelter from the part sight line, thereby make the color of the formed mixed light of a part in the visible light that a part in the visible light that the fluorescent ink of visible light that the observer only sees that fluorescent material sends in the higher gravure lines, lower gravure lines sends and offset printing fluorescent ink send; Along with the variation of angle, what of the sight line that is blocked also change, and the composition of the mixed light that the observer sees also changes thereupon, and the color of viewed light variation security pattern also can change; When viewing angle changed to higher gravure lines and blocks other lines fully, the observer only saw the visible light that the fluorescent material in the higher gravure lines sends.Therefore whole Security element presents with angle variable color feature.
According to concrete technical scheme of the present invention, the offset printing layer that the gravure lines that light variation security pattern also can be formed by gravure by a kind of gravure fluorescent ink and another kind of offset printing fluorescent ink form by offset printing forms, and this gravure line strip is formed in the surface of this offset printing layer.For example, light variation security pattern in the Security element provided by the invention, offset printing fluorescent ink and the carved gravure fluorescent ink of available different colours are printed as the light variation security pattern with surface relief structure, and offset printing fluorescent ink and carved gravure fluorescent ink are launched the visible light of different colours behind ultraviolet excitation.Wherein, the gap of the height of part carved gravure lines, width, gravure lines can be determined by design, to realize light is become the control of effect.Form the light variation security pattern with surface relief structure by the recessed chromatography of glue, under natural daylight, the lines that this light variation security pattern is shown as different colours form global pattern.When vertical angle was observed, the marking (gravure lines or offset printing layer) of different fluorescent ink printings was launched the visible light of different colours through ultraviolet excitation under uviol lamp, and what see is the mixed light color of these visible lights; Rotate light variation security pattern to certain angle, when under uviol lamp, observing, because the peculiar relief fabric of light variation security pattern itself, the part of observation side pattern projection can be blocked observer's part sight line, make the observer only observe the visible light that this side bossing pattern sends through ultraviolet excitation, therefore under uviol lamp, observe light variation security pattern at vertical angle and angle of inclination, can see the visible light of different colours.
According to concrete technical scheme of the present invention, above-mentioned light variation security pattern also can be comprised of the belling lines that at least two kinds of offset printing fluorescent inks form by offset printing and inkless belling technique; And the both sides of belling lines can be to be formed by different fluorescent ink printings and belling.Can be that the offset printing fluorescent ink is become pattern by registration printing particularly, then make pattern form the light variation security pattern of surface relief structure by inkless belling, different offset printing fluorescent inks be launched the visible light of different colours behind ultraviolet excitation.Light variation security pattern is shown as the global pattern of the appearance color with fluorescent ink under natural daylight, under uviol lamp when vertical angle is observed, the belling lines that different fluorescent inks form are through ultraviolet excitation, the visible light of emission different colours, what see is the mixed light color of these visible lights; Rotate Security element to different angles, owing to the peculiar relief fabric of light variation security pattern itself, under uviol lamp, can observe the visible light of different colours.
In Security element provided by the invention, the appearance color of the fluorescent ink that adopts can be for identical, different or colourless.When the appearance color of fluorescent ink was identical, under visible light, the light variation security pattern of observing was the pattern of solid color; When the appearance color of fluorescent ink not simultaneously, under visible light, the light variation security pattern of observing is the pattern with different colours, because the relief fabric of security pattern, rotate or the certain angle of inclination Security element, the color-set credit union that observes security pattern changes; When the appearance color of fluorescent ink when being colourless, under visible light, can't observe light variation security pattern.By the selection to the appearance color of fluorescent ink, can enrich a line anti-counterfeiting characteristic of Security element, be convenient to popular the observation and identification.
According to concrete technical scheme of the present invention, can comprise at least two kinds of fluorescent inks in the Security element provided by the invention, can contain the fluorescent material that sends the different colours visible light through ultraviolet excitation in above-mentioned at least two kinds of fluorescent inks, above-mentioned ultraviolet light can be identical wavelength ultraviolet light, also can be the ultraviolet light of different wave length.In above-mentioned at least two kinds of fluorescent inks, contain when the different wave length ultraviolet excitation sends the fluorescent material of different colours visible light, when adopting this Security element of UV-irradiation of a kind of wavelength wherein, only have corresponding fluorescent material to be subject to exciting and send visible light, other fluorescent materials can not be excited and be sent visible light.
Fluorescent material shows as strong reflection character to the near-infrared electromagnetic ripple more, utilize this character of fluorescent material, can in above-mentioned fluorescent ink, add infrared absorbing material, be made into composite anti-counterfeiting ink, have the light variation security pattern of relief fabric with this anti-forgery ink printing.
According to concrete technical scheme of the present invention, in the Security element provided by the invention, can have at least a fluorescent ink and contain infrared absorbing material.By adopting this scheme, can make Security element except have above-mentioned under uviol lamp, observe with the angle variable color feature, can also have and under infrared identifier, observe this light variation security pattern, can see all or in part feature of the image-forming information of light variation security pattern.This optical signature by infrared identifier demonstration light variation security pattern image-forming information can strengthen the false proof level with Security element of light variation security pattern provided by the invention.Preferably, a kind of adding INFRARED ABSORPTION material that can be in two kinds of fluorescent inks, another kind of fluorescent ink does not add the INFRARED ABSORPTION material, has the light variation security pattern of relief fabric with these two kinds of ink printings, for this Security element, under uviol lamp, observe with the angle variable color feature except above-mentioned, under infrared identifier, observe this light variation security pattern, to see the image-forming information with the parts of images of the ink printing that contains the INFRARED ABSORPTION material, another part shows without image-forming information under infrared identifier with the pattern that only contains the ink printing of fluorescent material only.
According to concrete technical scheme of the present invention, in the Security element provided by the invention, the infrared absorbing material that adopts can be for having the infrared absorbing material of different absorption/reflection characteristics to the different-waveband electromagnetic wave.For example, the infrared absorbing material that adopts has strong absorption to a certain wave band electromagnetic wave (A band), is strong reflection to another wave band electromagnetic wave (B wave band).In two kinds of fluorescent inks, add this infrared absorbing material making and obtain composite anti-counterfeiting ink, have the light variation security pattern of relief fabric with this anti-forgery ink printing.The Security element that obtains except have above-mentioned under uviol lamp, observe with the angle variable color feature, under infrared identifier, observe this light variation security pattern in A band, can see the image-forming information of whole light variation security pattern, under infrared identifier, observe this light variation security pattern in B wave band vertical angle, because this infrared absorbing material is strong reflection to B wave band electromagnetic wave, infrared identifier shows without image-forming information.Further, if only in above-mentioned a kind of fluorescent ink, add the INFRARED ABSORPTION material that the electromagnetic absorption/reflection of different-waveband is had powerful contrast, has the light variation security pattern of relief fabric with these two kinds of ink printings, the Security element that obtains except have above-mentioned under uviol lamp, observe with the angle variable color feature, under infrared identifier, observe this light variation security pattern, under A band, be merely able to see the image-forming information with the image of the ink printing that contains the INFRARED ABSORPTION material, another part shows without image-forming information under infrared identifier with the pattern that only contains the ink printing of fluorescent material, observe this light variation security pattern in the B wave band under infrared identifier, whole light variation security pattern shows without image-forming information.
According to concrete technical scheme of the present invention, in the Security element provided by the invention, can comprise two kinds of infrared absorbing materials in the fluorescent ink of formation light variation security pattern, and two kinds of infrared absorbing materials has powerful contrast to the electromagnetic absorption/reflection of identical wave band.For example, add respectively C and D INFRARED ABSORPTION material in two kinds of fluorescent inks, its middle infrared absorption substance C absorbs by force the A band electromagnetic wave, to the strong reflection of B wave band electromagnetic wave; INFRARED ABSORPTION material D absorbs by force B wave band electromagnetic wave, to the strong reflection of A band electromagnetic wave, has the light variation security pattern of relief fabric with these two kinds of ink printings, the Security element that obtains except have above-mentioned under uviol lamp, observe with the angle variable color feature, under infrared identifier, observe this light variation security pattern, under A band, be merely able to see the image-forming information with the image of the ink printing that contains the INFRARED ABSORPTION substance C, under infrared identifier, observe this light variation security pattern in the B wave band, be merely able to see the image-forming information with the image of the ink printing that contains INFRARED ABSORPTION material D.
The present invention also provides a kind of valuables that are provided with above-mentioned Security element, such as valency license, commodity sign or commodity packaging etc. are arranged, wherein, there is the valency license to comprise banknote, stock, certificate, check, credit card, identity card, passport, admission ticket or air ticket etc.Above-mentioned Security element can be to be arranged on the article in modes such as safety line, pad pasting or labeling, is convenient to the public or specialized department the true and false of article is detected identification.
According to concrete technical scheme of the present invention, the light variation security pattern in the Security element of the present invention can be the surface that directly is formed at valuables.
Particularly, Security element provided by the invention and light variation security pattern can realize in the following ways:
Fig. 1 is the schematic diagram of the light variation security pattern of the surface relief structure that formed by gravure and offset printing process printing by gravure fluorescent ink A and offset printing fluorescent ink B, and wherein the height of gravure lines is identical, W
ABe the width of gravure lines, W
BBe the interval of gravure lines, H
ABe the height of gravure lines, offset printing lines (offset printing layer) are background.
According to the situation judgement of common smooth argument part, tilting 60 ° is to make the gravure lines shelter from the more suitable angle of offset printing part fully, and this moment, direction of observation and plane included angle were 30 °, namely
For a line with angle variable color feature:
Owing to being the secondary colour of offset printing layer and gravure lines during right-angle view, be the gravure look when tilting to the certain angle observation, therefore can increase the width W in offset printing district as far as possible
B, reduce the width W in gravure district
A, the depth-width ratio of raising gravure district lines embodies more offset printing color in the time of can making right-angle view like this, embody more gravure color during oblique view, can make with the angle color changeable effect more obvious.Here might as well calculate by the most conservative situation, i.e. W
B=W
A(W in fact
BWill be as far as possible greater than W
ABetter), according to following formula, draw the depth-width ratio H of gravure lines
A/ W
A=1.732/2=0.866; If make W
B＞W
A, H
A/ W
ANumerical value then greater than 0.866, namely the gravure lines are more thin and tall better.
For fluorescence with angle variable color feature:
When only paying close attention to fluorescence with angle variable color feature, as A, B being made into same color (under the visible light), can suitably reduce the width W in offset printing district this moment
B, to reduce the requirement to gravure lines depth-width ratio, make things convenient for production practices.From the actual print situation, there is certain difficulty in the depth-width ratio that improves the gravure lines, and the flowability of printing ink makes it to present wide dwarfing tendency (depth-width ratio diminishes), and particularly gravure China ink flows is stronger, makes W
ABecome larger; In addition, the gravure lines can not be too thin, and lines too carefully are difficult to be shifted out from the version line, is like this highly equally.The present invention is according to the combination of theory and practice, with the height H of the lines in the Security element of preparation
ABe controlled at about the 40-90 micron, with W
ABe controlled at about the 50-100 micron, with W
BBe controlled at about the 40-80 micron, by the control to these parameters, the Security element of final acquisition had preferably with angle variable color feature, be conducive to masses and identify quickly and easily.
Certainly, if make viewing angle be increased to 75 °, then depth-width ratio can be reduced to 0.4; If W
B=W
A/ 2, then depth-width ratio can be reduced to 0.577.
Light variation security pattern in the Security element provided by the invention, the carved gravure fluorescent ink E of available same color and carved gravure fluorescent ink F become to have the light variation security pattern of surface relief structure by registration printing, two kinds of carved gravure fluorescent ink E and F launch the visible light of different colours behind ultraviolet excitation.The mutual gap of height, width, the lines of the gravure lines of two kinds of engraving intaglio printing ink printings can be determined by design.The gravure lines that these two kinds of gravure inks are printed as both can have different height, also can be that two kinds of gravure inks make up gravure lines by cover, namely the both sides of same lines can be formed by the fluorescent ink that sends the different colours visible light under ultraviolet excitation respectively.Under natural daylight, this light variation security pattern is shown as the global pattern of color of the same race, and when vertical angle was observed, the lines of different fluorescent ink printings were through ultraviolet excitation under uviol lamp, the visible light of emission different colours, what see is the mixed light color of these visible lights; With light variation security pattern certain angle that tilts, because the peculiar relief fabric of light variation security pattern itself, under uviol lamp, can observe the visible light of different colours.
Fig. 2 is the schematic diagram of light variation security pattern of the formed surface relief structure of gravure lines of the differing heights that obtains of two kinds of gravure fluorescent inks printing, W
ABe the gravure line thickness that gravure fluorescent ink E printing obtains, H
ABe the gravure lines height that printing ink E printing obtains, W
BBe the gravure line thickness that gravure fluorescent ink F printing obtains, H
BBe the gravure lines height that printing ink F printing obtains, W is the interval of two kinds of gravure lines.According to the situation judgement of common smooth argument part, tilting 60 ° is to make high lines shelter from the more suitable angle of low lines part, and this moment, direction of observation and plane included angle were 30 °, namely satisfied to concern:
Because what see during right-angle view under the uviol lamp is the mixed light of the visible light launched of high and low gravure lines, it is the visible light colors that high gravure lines are launched during oblique view, therefore can improve the depth-width ratio of high gravure lines, so that color changeable effect is more obvious as far as possible.Here might as well calculate by the most conservative situation, i.e. W
B=W
A(W in fact
BWill be as far as possible less than W
ABetter), and H
BWith H
ABetween difference can be the arbitrary value between 0 to the 100 μ m, consider the situation of production practices, in the Security element provided by the invention various parameters are controlled, concrete scope is as follows: H
BWith H
ADifference between 20-90 μ m, preferred 60-80 μ m; W
B=W
A, preferred 50-70 μ m; W between 30-60 μ m, preferred 40-50 μ m.By the control to these parameters, the Security element of final acquisition is had preferably with angle variable color feature, be conducive to masses and identify quickly and easily.
Fig. 3 is that two kinds of gravure fluorescent ink covers are printed as the formed schematic diagram with light variation security pattern of surface relief structure of single line bar, establishes the wide W of being of gravure lines
AB, lines spacing W, lines height H
ABAccording to the situation judgement of common smooth argument part, tilting 60 ° is to make side gravure part shelter from the more suitable angle of opposite side gravure part fully, and this moment, direction of observation and plane included angle were 30 °, namely
For a line with angle variable color feature: this example is similar to Example 1, but essence is different, during right-angle view, what observe is the secondary colour of two kinds of gravure lines and base material true qualities, when lopsidedness was observed, that observe was gravure look A, during the opposite side oblique view, that observe is gravure look B, so lines spacing W is between 0 and W
ABBetween, can be set as W=W here
AB/ 2.According to following formula, draw the depth-width ratio H of gravure lines
AB/ W
AB=1/1.732=0.577.
For fluorescence with angle variable color feature: when only paying close attention to fluorescence with angle variable color feature, as two kinds of gravure inks are made into same color (under the visible light), can suitably reduce lines spacing W this moment, to reduce the requirement to gravure lines depth-width ratio, makes things convenient for production practices.
From the actual print situation, there is certain difficulty in the depth-width ratio that improves the gravure lines, and the flowability of printing ink makes it to present wide dwarfing tendency (depth-width ratio diminishes), and particularly gravure China ink flows is stronger, makes W
ABBecome very large; In addition, the gravure lines can not be too thin, and lines too detailed rules and regulations are difficult to two color inks are linked in the gravure lines.According to the combination of theory and practice, in the Security element provided by the invention, can control various parameters, specific as follows: H
ABBe 80-90 micron, W
ABBe the 100-200 micron, W is the 50-100 micron.By the control to these parameters, the Security element of final acquisition is had preferably with angle variable color feature, be conducive to masses and identify quickly and easily.
Certainly, if make viewing angle be increased to 75 °, then depth-width ratio can be reduced to 0.267; If W is reduced to 0, then depth-width ratio can be reduced to 0.289, at this moment W
ABCan in the 100-350 micrometer range, select, reduce the printing difficulty.
Light variation security pattern in the Security element provided by the invention, the offset printing fluorescent ink G of available same color becomes pattern with offset printing fluorescent ink H by registration printing, then makes pattern form the light variation security pattern of surface relief structure by inkless belling.Two kinds of offset printing fluorescent ink G and H launch the visible light of different colours behind ultraviolet excitation.The mutual gap of width, lines of two kinds of offset ink printings and the belling lines that obtain through inkless belling can be determined by design.Light variation security pattern is shown as the global pattern of color of the same race under natural daylight.When vertical angle was observed, the lines of different fluorescent ink printings were launched the visible light of different colours through ultraviolet excitation under uviol lamp, and what see is the mixed light color of these visible lights.Security element is tilted to different angles, owing to the peculiar relief fabric of light variation security pattern itself, under uviol lamp, can observe the visible light of different colours.
Light variation security pattern in the Security element provided by the invention, can be printed as the single line bar by two kinds of offset printing fluorescent ink G and H cover, by inkless belling, make G, H be distributed in belling lines both sides, form the light variation security pattern with surface relief structure as shown in Figure 3.
Fluorescent ink involved in the present invention is this area material commonly used, can realize according to the suitable fluorescent ink of the effect selection that will reach for persons skilled in the art.For infra-red material involved in the present invention, existing open report before the present invention, the Chinese invention patent application 200610164941.4 that proposes of the present patent application people for example, open day is on June 11st, 2008.
The present invention is to provide a kind of new anti-counterfeiting technology scheme, its key is the lines that fluorescent ink is printed as are combined into concrete security pattern, and by corresponding variation, make the two wires anti-counterfeiting characteristic that can present under the Security element ultraviolet light that obtains with the angle variable color; Simultaneously, by the selection to fluorescent ink, Security element is had be suitable for a popular line anti-counterfeiting characteristic of identifying.The techniques such as the fluorescent ink that wherein, adopts and gravure, offset printing and inkless belling all are this area material and processing technologys commonly used.
Security element provided by the present invention has comprised the light variation security pattern with surface relief structure, this light variation security pattern adopts fluorescent ink to form by different technique, under ultraviolet ray, when the inclination certain angle is observed, can observe obvious light and become effect, this Security element is had significantly with angle variable color feature.Although in the Security element provided by the invention to belong to the two wires with angle variable color feature false proof, but, being used for providing the equipment such as ultraviolet uviol lamp all is that ordinary populace holds facile equipment, therefore, the anti-counterfeiting characteristic that has of Security element provided by the invention is very easily identification for ordinary populace.Security element provided by the present invention can also form the Security element with composite anti-fake feature in conjunction with infrared other anti-counterfeiting characteristics such as grade except having above-mentioned two wires anti-counterfeiting characteristic, further improve the imitation difficulty of Security element.
Description of drawings
Fig. 1 is the schematic diagram of the light variation security pattern with surface relief structure of offset printing and gravure formation.
Fig. 2 is the schematic diagram of the light variation security pattern with surface relief structure that forms of the gravure lines of differing heights.
Fig. 3 is the schematic diagram that two kinds of gravure fluorescent ink covers are printed as the light variation security pattern with surface relief structure of single line bar formation.
Fig. 4 is the schematic diagram of the light variation security pattern with surface relief structure of offset printing and gravure formation.
Fig. 5 is the schematic diagram of the light variation security pattern with surface relief structure that forms of the gravure lines of differing heights.
Fig. 6 is the schematic diagram of the light variation security pattern with surface relief structure that forms of same lines that two kinds of gravure inks consist of.
Fig. 7 is two kinds of offset inks form the security pattern of surface relief structure by the same lines of printing and inkless belling formation schematic diagram.
The specific embodiment
Below in conjunction with specific embodiment the solution of the present invention, characteristics and false proof effect are carried out exemplary illustration, but practical range of the present invention is not consisted of any restriction.
Embodiment 1
With offset printing fluorescent ink O printing background shading (being the offset printing layer), use the carved gravure fluorescent ink P printing raised line (be gravure lines) identical with offset printing fluorescent ink color.Fluorescent material among offset printing fluorescent ink O and the carved gravure fluorescent ink P is launched the visible light of different colours under ultraviolet excitation.Has the light variation security pattern sectional view of surface relief structure in the present embodiment Security element as shown in Figure 1, W among the figure
B=100 μ m, W
A=100 μ m, H
A=80 μ m.When observing under natural daylight, light variation security pattern is shown as the global pattern of color of the same race.When vertical angle was observed, the marking (offset printing layer and gravure lines) of different fluorescent ink printings was launched the visible light of different colours through ultraviolet excitation under uviol lamp, and what see is the mixed light color of these visible lights.Tilt this Security element to certain angle, when under uviol lamp, observing, because light becomes the peculiar relief fabric of pseudo-pattern itself, the part of observation side pattern projection can be blocked observer's part sight line, make the observer only observe the visible light that this side bossing pattern sends through ultraviolet excitation, therefore under uviol lamp, observe light variation security pattern with vertical angle and angle of inclination, can see the visible light of different colours.
Embodiment 2
With offset printing fluorescent ink O printing background shading, with the carved gravure fluorescent ink Q printing gravure lines different from the offset ink color, wherein the fluorescent material among offset printing fluorescent ink O and the carved gravure fluorescent ink Q is launched the visible light of different colours under ultraviolet excitation.The light variation security pattern sectional view with surface relief structure in the Security element of the present embodiment as shown in Figure 1, W among the figure
B=80 μ m, W
A=80 μ m, H
A=70 μ m.Under natural daylight, can observe the light variation security pattern that the lines by different colours form.Because the peculiar relief fabric of light variation security pattern itself can be observed different colors under different viewing angles, when observing under natural daylight, present with angle variable color feature; When vertical angle was observed, what observe was the mixed light of the visible light that fluorescent material is launched in the different fluorescent inks under uviol lamp.Adjust viewing angle, when under uviol lamp, observing, because the peculiar relief fabric of light variation security pattern itself changes viewing angle and can see with angle variable color light change feature.
Embodiment 3
With offset printing fluorescent ink O printing background shading, use the carved gravure fluorescent ink P printing gravure lines identical with the offset ink color, wherein the gravure lines have different height.Fluorescent material among offset printing fluorescent ink O and the carved gravure fluorescent ink P is launched the visible light of different colours under ultraviolet excitation.The light variation security pattern sectional view with surface relief structure of the present embodiment as shown in Figure 4, W among the figure
B=60 μ m, W
A=60 μ m, H
A1=30 μ m, H
A2=80 μ m.Under natural daylight, this light variation security pattern is shown as the global pattern of color of the same race; Under uviol lamp when vertical angle is observed, what observe is the mixed light of the visible light that fluorescent material is launched in the different fluorescent inks, adjust viewing angle, when under uviol lamp, observing, because the different peculiar relief fabrics of gravure lines height can be seen the visible light that high gravure lines are launched in certain viewing angle.
Embodiment 4
Print light variation security pattern with gravure fluorescent ink P and gravure fluorescent ink R by chromatography, wherein contain the infra-red material to near-infrared electromagnetic ripple absorption among the fluorescent ink R, printing ink P prints high lines H
B, the low lines H of printing ink R printing
AFluorescent material among carved gravure fluorescent ink P and the R is launched respectively the visible light of different colours under ultraviolet excitation, and the appearance color of two kinds of printing ink is different.Have the light variation security pattern sectional view of surface relief structure as shown in Figure 5, the B lines are higher than the A lines among the figure, and consist of picture and text, W
B=50 μ m, W
A=50 μ m, H
A=50 μ m, H
B=80 μ m.When observing with vertical angle under natural daylight, light variation security pattern presents the global pattern of different colours, and the color of the picture and text that high lines B consists of then appears in the inclination certain angle; When vertical angle was observed under the uviol lamp, what see was the mixed light of the visible light that fluorescent material is launched in the different fluorescent inks; Adjust viewing angle, when under uviol lamp, observing, because the different formed relief fabrics of gravure lines height are observed light variation security pattern in certain viewing angle, can see the visible light that high gravure lines B launches.When under infrared identifier, observing, can be observed the image-forming information of the lines (A) that are printed as by printing ink R, do not observe the image-forming information of the lines (B) that are printed as by printing ink P.Owing to containing the false proof level that infrared absorbing material produces image-forming information under infrared identifier optical signature has strengthened the Security element with light variation security pattern of the present embodiment among the printing ink R.
Embodiment 5
With gravure fluorescent ink P and gravure fluorescent ink S printing light variation security pattern, and two kinds of printing ink are filled in same lines both sides by chromatography, wherein contain among the fluorescent ink S near-infrared A band electromagnetic wave is had absorption and the infra-red material that the B wave band had reflex.Fluorescent material among gravure fluorescent ink P and the S is launched respectively the visible light of different colours under ultraviolet excitation, and the appearance color of two kinds of printing ink is different.Has the light variation security pattern sectional view of surface relief structure as shown in Figure 6, the W of printing ink P printing lines
APart, the W of printing ink S printing lines
BPart, lines be spaced apart W, the height of lines is H
B, the wide 400 μ m of gravure lines among the figure, W
AAnd W
BRespectively account for 200 μ m, lines spacing W is 100 μ m, the lines height H
BBe 90 μ m.When observing with vertical angle under the natural daylight condition, light variation security pattern presents the global pattern of different colours, owing to light variation security pattern is that gravure ink by two kinds of different colours consists of the unique surface relief fabric that same lines form, when different angles are observed, can see significantly with goniometachromatism.When observing with vertical angle under the uviol lamp, what see is the mixed light of the visible light that fluorescent material is launched among printing ink P and the S.Adjust viewing angle, when under uviol lamp, observing, can see respectively not sharing the same light that fluorescent material is launched among printing ink P and the S under the different angles, occur with goniometachromatism.When under infrared identifier, observing, only see lines W in the electromagnetic wave A band
BThe part image-forming information, in the whole light variation security pattern of B wave band without image-forming information.
Embodiment 6
By chromatography printing background lines, wherein contain respectively INFRARED ABSORPTION substance C and D among printing ink T and the V with the different two kinds of offset printing fluorescent ink T of color and V, its middle infrared absorption substance C absorbs by force the A band electromagnetic wave, to the strong reflection of B wave band electromagnetic wave; INFRARED ABSORPTION material D absorbs by force B wave band electromagnetic wave, to the strong reflection of A band electromagnetic wave.By inkless belling technique, make the lines of printing ink T and V printing be distributed in belling lines both sides.Has the light variation security pattern sectional view of surface relief structure as shown in Figure 7, the wide 100 μ m of belling lines, high 80 μ m, lines spacing 100 μ m.Under the natural daylight condition during right-angle view, light variation security pattern presents the global pattern with different colours, because light variation security pattern is the unique surface relief fabric that the offset ink by two kinds of different colours consists of same lines and forms by inkless belling technique, can see significantly with goniometachromatism when different angles are observed; During right-angle view, what see is the mixed light of the visible light that fluorescent material is launched among printing ink T and the V under the uviol lamp; Adjust viewing angle, when under uviol lamp, observing, can see respectively the different colours light that fluorescent material is launched among printing ink T and the V under the different angles, occur with goniometachromatism.Under infrared identifier, observe this light variation security pattern, under A band, only see the image-forming information with the image of the ink printing that contains the INFRARED ABSORPTION substance C; Under the B wave band, only see the image-forming information with the image of the ink printing that contains INFRARED ABSORPTION material D.
Embodiment 7
With two kinds of colourless gravure fluorescent ink X and gravure fluorescent ink Y printing light variation security pattern, and two kinds of printing ink are filled in same lines both sides by chromatography, and the sectional view of printed light variation security pattern as shown in Figure 6.Fluorescent material among the gravure fluorescent ink X is by the ultraviolet excitation of 254nm, and the fluorescent material among the gravure fluorescent ink Y is by the ultraviolet excitation of 365nm, and the utilizing emitted light color of two kinds of fluorescent materials is different.Do not observe this light variation security pattern under the natural daylight condition; Under the uviol lamp of 254nm during right-angle view, only see the light that the lines of printing ink X printing are launched, change viewing angle, only when printing ink X unilateral observation, just see the light that lines are launched.Under the uviol lamp of 365nm during right-angle view, only see the light that the lines of printing ink Y printing are launched, change viewing angle, only when printing ink Y unilateral observation, just see the light that lines are launched.
Claims (17)
1. Security element, its surface has into the light variation security pattern of relief fabric, and with the difference of viewing angle, utilizes corresponding instrument can observe this light variation security pattern and have different optical effects;
Described different optical effect comprises: the visible light that light variation security pattern is sent under ultraviolet light with the difference of viewing angle, shows different colors;
Described light variation security pattern is to be combined with offset printing by gravure, gravure or offset printing forms with the technique that inkless belling combines by at least two kinds of fluorescent inks.
2. Security element as claimed in claim 1, wherein, described different optical effect comprises: the visible light that light variation security pattern is sent under ultraviolet light, difference with viewing angle, show different colors, and described light variation security pattern presents all or part of anti-counterfeiting information of security pattern under infrared identifier.
3. Security element as claimed in claim 1, wherein, the gravure lines that described light variation security pattern is formed by gravure by at least two kinds of fluorescent inks form.
4. Security element as claimed in claim 3, wherein, described gravure lines are formed by the chromatography of at least two kinds of gravure fluorescent inks, and the both sides of described gravure lines are formed by different gravure fluorescent inks.
5. Security element as claimed in claim 3, wherein, every gravure lines that form light variation security pattern are to be formed by a kind of gravure fluorescent ink printing wherein, and the gravure lines that formed by different gravure fluorescent inks have different height.
6. such as each described Security element of claim 3-5, wherein, described light variation security pattern also comprises the offset printing layer that is formed by offset printing by a kind of offset printing fluorescent ink, and described gravure line strip is formed in the surface of this offset printing layer.
7. Security element as claimed in claim 1, wherein, the offset printing layer that the gravure lines that described light variation security pattern is formed by gravure by at least a gravure fluorescent ink and another kind of offset printing fluorescent ink form by offset printing forms, and the gravure line strip is formed in the surface of offset printing layer.
8. Security element as claimed in claim 1, wherein, the belling lines that described light variation security pattern is formed by offset printing and inkless belling technique by at least two kinds of offset printing fluorescent inks form.
9. Security element as claimed in claim 8, wherein, the both sides of described belling lines are formed by different fluorescent ink printings.
10. Security element as claimed in claim 1, wherein, the appearance color of described fluorescent ink is identical or different.
11. Security element as claimed in claim 1, wherein, the appearance color of described fluorescent ink is colourless.
12. Security element as claimed in claim 1, wherein, described at least two kinds of fluorescent inks contain the fluorescent material that sends the different colours visible light through ultraviolet excitation.
13. Security element as claimed in claim 1 wherein, contains infrared absorbing material at least a fluorescent ink.
14. Security element as claimed in claim 13, wherein, the infrared absorbing material of described infrared absorbing material for the different-waveband electromagnetic wave is had different absorption/reflection characteristics.
15. Security element as claimed in claim 14, wherein, form at least two kinds of fluorescent inks of described light variation security pattern and comprise different described infrared absorbing materials, and described different infrared absorbing materials have powerful contrast to the electromagnetic absorption/reflection of identical wave band.
16. valuables that are provided with Security element, wherein, described Security element is such as each described Security element of claim 1-15.
17. valuables as claimed in claim 16, wherein, the light variation security pattern in the described Security element directly is formed at the surface of these valuables.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774154A (en) * | 2011-05-09 | 2012-11-14 | 郑进 | Printing method of ink containing structural texture material |
| CN103354060B (en) * | 2013-07-24 | 2015-07-22 | 上海宏盾防伪材料有限公司 | Preparation method for legal certificate visual anti-fake component |
| CN104647938B (en) * | 2013-11-22 | 2016-03-23 | 中钞特种防伪科技有限公司 | A kind of method preparing optical anti-counterfeit element |
| CN105150715B (en) * | 2015-08-19 | 2017-04-26 | 中钞油墨有限公司 | Dynamic anti-fake element and preparing method and application thereof |
| CN206178915U (en) * | 2015-10-30 | 2017-05-17 | 北京柯斯元科技有限公司 | False proof mark , anti -fake system, be used for false proof mark's texture granule |
| CN105584240B (en) * | 2015-12-14 | 2019-03-22 | 中国人民银行印制科学技术研究所 | Figure line product and the printing process for preparing the figure line product |
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| CN107284066A (en) * | 2017-06-29 | 2017-10-24 | 缪秉强 | A kind of multi-sheet printed technique and its pigment for the technique |
| CN107423796A (en) * | 2017-07-28 | 2017-12-01 | 广州中国科学院先进技术研究所 | A kind of multispectral invisible anti-counterfeit mark and its detection means, detection method |
| CN109270712B (en) * | 2018-09-19 | 2020-07-14 | 北京化工大学 | Liquid crystal film and preparation method and application thereof |
| CN110920283B (en) * | 2019-11-27 | 2022-05-06 | 中钞油墨有限公司 | Printing stock printed with patterns with triple visual effects and preparation method thereof |
| GB202018041D0 (en) * | 2020-11-17 | 2020-12-30 | De La Rue Int Ltd | Security device and method of manufacture thereof |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033059A (en) * | 1972-07-06 | 1977-07-05 | American Bank Note Company | Documents of value including intaglio printed transitory images |
| CA1019012A (en) * | 1975-03-24 | 1977-10-11 | Canadian Bank Note Company | Coloured transitory images in printed articles |
| WO1988005387A1 (en) * | 1987-01-13 | 1988-07-28 | Mancuso Robert J | Variable color print and method of making same |
| EP0433330A1 (en) * | 1988-09-09 | 1991-06-26 | De La Rue Co Plc | Security device. |
| US5582103A (en) * | 1992-06-04 | 1996-12-10 | Director-General, Printing Bureau, Ministry Of Finance, Japan | Method for making an anti-counterfeit latent image formation object for bills, credit cards, etc. |
| CN1236795A (en) * | 1999-05-28 | 1999-12-01 | 齐剑峰 | Multi-antiforge ink |
| CA2686460A1 (en) * | 2007-05-25 | 2008-12-04 | Toppan Printing Co., Ltd. | Display and information-printed matter |
-
2008
- 2008-12-17 CN CN 200810240129 patent/CN101746209B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033059A (en) * | 1972-07-06 | 1977-07-05 | American Bank Note Company | Documents of value including intaglio printed transitory images |
| CA1019012A (en) * | 1975-03-24 | 1977-10-11 | Canadian Bank Note Company | Coloured transitory images in printed articles |
| WO1988005387A1 (en) * | 1987-01-13 | 1988-07-28 | Mancuso Robert J | Variable color print and method of making same |
| EP0433330A1 (en) * | 1988-09-09 | 1991-06-26 | De La Rue Co Plc | Security device. |
| US5582103A (en) * | 1992-06-04 | 1996-12-10 | Director-General, Printing Bureau, Ministry Of Finance, Japan | Method for making an anti-counterfeit latent image formation object for bills, credit cards, etc. |
| CN1236795A (en) * | 1999-05-28 | 1999-12-01 | 齐剑峰 | Multi-antiforge ink |
| CA2686460A1 (en) * | 2007-05-25 | 2008-12-04 | Toppan Printing Co., Ltd. | Display and information-printed matter |
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|---|---|
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Effective date of registration: 20210419 Address after: 100070 8th floor, building 2, No.5 Zhonghe Road, 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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| CP01 | Change in the name or title of a patent holder |
Address after: 100070 8th floor, building 2, No.5 Zhonghe Road, 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, 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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| CP01 | Change in the name or title of a patent holder |