CN101452658B - Frame or boundary provided surrounding of pigment sheet for stealth anti-counterfeiting application - Google Patents
Frame or boundary provided surrounding of pigment sheet for stealth anti-counterfeiting application Download PDFInfo
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- CN101452658B CN101452658B CN 200710194967 CN200710194967A CN101452658B CN 101452658 B CN101452658 B CN 101452658B CN 200710194967 CN200710194967 CN 200710194967 CN 200710194967 A CN200710194967 A CN 200710194967A CN 101452658 B CN101452658 B CN 101452658B
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Abstract
The invention discloses an opaque sheet, which has selected shape and/or other mark and provides hidden anti-counterfeiting characteristic for objects. For example, the opaque sheet is used for pigment of a coating or ink or a bright sheet. A formed opaque hidden sheet is difficult to be randomly observed and detected but can be easily observed when amplified for 50 times in certain embodiments. When the sheet is manufactured, a thin sheet which is provided with relief symbols or marks and an embossed structure is provided; once a coating is moved away from the embossed thin sheet, coating materials are easy to fracture along a frame line or a groove, so that the sheet with basically consistent dimension is obtained. In order to make fracture of the sheet along the frame line or the groove more easily generated than fracture of the sheet along a relief sculpture or a groove limited and marked in a frame, the frame is provided with the groove which is deeper than the marked groove.
Description
Technical field
The present invention relates generally to thin pigment flakes, relating more specifically to provides border or framework around marker slip, and these marker slips are applied in the coating composition, and relate to the mark that is limited by one or more grooves is provided in the framework region of sheet; And, more specifically, the invention provides a kind of framework and the mark with framework, wherein fillister skeleton is lower than groove mark intensity, more easy fracture.
Background technology
Special pigment has been developed for Application in Anti-counterfeiting, for example is printed on the banknote, the strip of paper used for sealing of the packing of valuables, container even directly apply to security pattern on the commercial article.For example, the federation of 20 dollars in U.S. savings certificate uses optically variable ink at present.Be printed on the numeral " 20 " in the note surface lower right corner, its color changes along with the change at visual angle.This is tangible security pattern.Color changeable effect can not copy by common colored photoprinter, whether has the anti-counterfeiting characteristic of variable color to determine the authenticity of this bank note thereby the people who takes bank note can observe it.
Other valuable files and article use similar measure.For example, flitter or diffractive pigment are used in the coating or printing ink that is applied directly on the article, and these article such as stock, passport, the original packing of product perhaps are used in these pigment on the strip of paper used for sealing of article.Because the adulterator becomes more and more experienced, therefore wish that anti-counterfeiting characteristic can more difficult forgery.
A kind of method for anti-counterfeit is to use the microcosmic symbol at the multiple-layer alteration paint sheet.By the localized variation of optical property, as reflectivity, and form this symbol at one deck at least of multiple-layer alteration paint sheet.The multiple-layer alteration paint sheet generally includes the Fabry-Perot type structure, and it has the absorption layer that separates with the reflection horizon by separation layer.The reflection horizon is generally metal level, and it makes pigment flakes opaque basically.If such pigment flakes of vast scale is mixed with other pigment, then He Cheng color may clearly be different from described other pigment, if this pigment flakes that mixes with other pigment very little, then they may be difficult to be found.
Polyethylene terephthalate (" the PET ") sheet that another kind of technology uses epoxy encapsulation to be shaped.The reflection horizon is deposited on the PET roller, then with the PET dicing.These sheets are applied or encapsulate to improve the durability in reflection horizon by epoxy resin.These sheets are applicable to multiple shape, for example square, rectangle, hexagon and " apostrophe shape (apostrophe) ", and can select the metal tone that reflects, described reflective metals tone is silver, pewter, Jin Hetong for example.Yet epoxy resin layer produces thick relatively sheet with relative thick PET substrate (minimum thickness that it generally has about 13 microns (0.5 mils) when being used for vacuum deposition process), generally greater than 14 microns.Unfortunately, the sheet of this thickness is undesirable in stealth is used, and this thickness is much larger than the thickness of basic pigment in this is used.Similarly, the sheet of this thickness can not flow in printing ink well, thereby produces piece in coating.When coating comprised the sheet that produces rough surface, thick relatively clear topcoat generally was coated on the rough surface.
Comparatively it is desirable to use the concealed anti-false pattern that has overcome above-mentioned technical limitation to carry out mark at object.
The present invention relates to provide thin slice, have the mark or the invisible symbol that are formed by mechanical system compacting or embossment or etching or formed by laser mode in it, wherein said invisible symbol can be in sight by microscope.Integrality for hold mark, when providing framework to deposit from them with each thin slice of box lunch around all or part invisible symbol to remove the supporting construction on it, most of thin slice ruptures along the frame line fracture that provides rather than in a kind of uncontrollable unforeseen mode, otherwise fracture line pass symbol or near the frequency symbol is higher.For guaranteeing as far as possible that further fracture takes place along frame line or groove, the profile of frame slot can be different from the groove that limits invisible symbol, and wherein frame slot should or crackle occur than the easier fracture of invisible symbol groove according to design.Can provide parallel frame line so that thin slice ruptures with band shape in some instances; In a preferred embodiment of the invention, sheet, and the one or more symbols in the sheet of more specifically saying so, have around described one or more symbols around greater or less than the flute profile framework border on four the limit, so that described along the square or rectangle fracture of frame line with unanimity.Certainly except this mode, before thin slice is removed, by setting in advance the framework symbol on three limits, also can provide triangle or hexagonal thin slice from their stilt.Provide a kind of conventional releasing layer so as thin slice can be easily from they supporter or supporting layer remove, thereby thin slice one is removed, just rupture along frame line.Framework can use and make like the symbol class method and make; Use laser that suprabasil film is carried out etching or compacting; In a preferred embodiment, employing forms identical process with symbol and makes framework.
" matrices " this term that hereinafter adopts refers to the embossment instrument and sheet is exerted pressure and sheet that embossment becomes, or refer to form in the coating of embossment substrate, shape is with the sheet of substrate shape.
Therefore; one object of the present invention is exactly that the sheet that has symbol thereon is provided; wherein symbol has or once had by embossment, etching or laser means and is fabricated into framework or border in the sheet; or the sheet that is formed by sculptured temporary support die casting; so that be protected in the process that these symbols separate the sheet stilt interim from it, wherein frame slot is darker and/or easy fracture more than the groove that limits framework internal labeling or symbol.
An object of the present invention is to provide the frame slot that shape of cross section is different from labeled slots, and wherein said frame slot is designed to than the easier fracture of symbol groove or crackle occurs.
In another aspect of this invention, substrate will be metallized before adding releasing layer in advance.At sheet and releasing layer after separating, the embossment substrate can be cut into reflector plate but not utilize again, so that other a collection of coated foil to be provided.Described pre-metallization substrate can vertically be cut to bar, and to form new security pattern (being line), described new security pattern comprises the coupling design identical with the sheet made from described substrate.
In another aspect of this invention, remove and packed through the sheet of suitable " through adjusted size " in order to the post-processed technology that forms given shape/tape symbol sheet from substrate, in order in printing or painted application, improve described anti-disconnected durability.
Summary of the invention
According to the present invention, a plurality of pigment marker slips are provided, each sheet comprises framework and is positioned at the zone of this framework, described frame loops is limited around described periphery and by a plurality of wall, wherein the height of the wall of at least one described framework is at least Fh, and wherein have mark in the zone in described framework, described mark is limited less than the groove of Id by one or more degree of depth that are formed in it, wherein Fh＞Id.
According to a further aspect in the invention, provide a kind of mark zone thin slice that is used to form marker slip, it comprises:
Substrate, described substrate has the frame slot that a plurality of degree of depth are the restriction framework of Fh through embossment, and a plurality of labeled slots in each framework, the degree of depth of wherein said labeled slots is less than Id, and Fh＞Id wherein, so that when the coating on described thin slice or the thin slice is separated into marker slip, the easier appearance fracture along described frame slot ratio along labeled slots.
According to a further aspect in the invention, provide a kind of coating composition that comprises carrier; And be dispersed in a plurality of individual layer inorganic dielectric hidden mark sheets in the described carrier, wherein said by frame loops around, but and wherein in the framework inner region, form distinguished symbol, but and wherein frame wall is darker than the wall of the groove that limits described distinguished symbol.
According to a further aspect in the invention, the method that provides a kind of generation to have the sheet of mark thereon, this method may further comprise the steps: the substrate that is coated with releasing layer is provided; One or more layers optical coating is provided at described releasing layer; Carve the mark of one or more sign formats in a plurality of zones on described optical coating, wherein the one or more grooves of form in described optical coating, forming of institute's blaze note; Carve fillister skeleton around described mark in each zone, wherein said fillister skeleton is darker than the one or more grooves that form described mark; Remove described optical coating from described releasing layer, so that described coating is fractured into sheet along described fillister skeleton, described form is the mark with framework.
In addition, in another aspect of this invention, provide the sheet that has at least one symbol thereon, wherein said before being removed from support chip, along etched, laser scoring or embossment in support chip fillister skeleton or the border and
Separate with adjoining sheet, and wherein limit the described framework of periphery or border than the easier fracture of described at least one symbol on it.
According to a further aspect in the invention, provide a plurality of embossment pigment hidden mark sheets, scribble printing opacity heterogeneity coating on it, to reduce the degree of depth of the groove in described.
Description of drawings
Fig. 1 is the planimetric map of a part that has the file of anti-counterfeiting characteristic according to the embodiment of the invention.
Fig. 2 a is the reduced graph with part of embossment part and non-embossment deposition substrate partly.
Fig. 2 b is the reduced graph of a part with another deposition substrate 11 ' of embossment part 13 ' and non-embossment part 15 '.
Fig. 3 a is the simplified plan view in the 14A of the anti-counterfeiting characteristic 14 shown in Fig. 1 part.
Fig. 3 b is the simplification cross section according to the bright pigment flakes 20 of one embodiment of the invention.
Fig. 3 c provides the simplification cross section of the bright sheet 20 ' of element sign.
Fig. 3 d is the simplification cross section of camouflage paint sheet 30 according to another embodiment of the present invention.
Fig. 4 is that described opaque hidden sheet is dispersed in the carrier according to the cross section of the varnish with opaque hidden sheet of the embodiment of the invention.
Fig. 5 is dispersed in substrate in the bonding agent and the cross section of opaque hidden sheet according to another embodiment of the present invention.
Fig. 6 is the method flow diagram according to the sheet that makes paints of the embodiment of the invention.
Fig. 7 is the thin slice photo that indicates many Euro symbols, and quadra or bounding box that each symbol is embossments in the substrate are lived.
Fig. 8 is the picture with many Mg-Gn variable color sheets, every have the Euro symbol and mostly several pieces have completely or the part frame loops around character.
Fig. 9 is the picture that has many Mg-Gn μ symbols on the sheet, wherein said random fracture, and other are destroyed owing to there is not framework to cause fracture line that some symbols are kept intact.
Figure 10 is in a large number being lived the photo of symbol without any many in the thin slice of invisible symbol or framework by frame, and wherein the ratio of being lived symbol and other thin slices by frame is 1: 10.
Figure 11 a is the isometric view of excision embossment substrate, shows the degree of depth of substrate inner frame groove.
Figure 11 b is the cross-section analysis to substrate shown in Figure 11 a.
Figure 11 c is the normal view of substrate among Figure 11 a.
Figure 11 d is the isometric view of excision embossment substrate, shows projection from the frame wall of substrate and the height of mark wall.
Figure 11 e is the cross-section analysis to substrate shown in Figure 11 d.
Figure 11 f is the normal view of substrate among Figure 11 d.
Figure 12 a is the cross-sectional illustration that adopts the prior art sheet of uniform coating.
Figure 12 b is the cross-sectional illustration according to of the present invention, and wherein frame depth is about 2 times of the symbol degree of depth.
Figure 13 a is the cross-sectional illustration according to of the present invention, and the coating on its mesospore is thinner than base coat.
Figure 13 b is the cross-sectional illustration according to of the present invention.
Figure 14 a is the cross-sectional illustration according to film trap of the present invention, and its floating coat is thicker than place, channel opening bottom at the upper wall place, helps sheet to rupture along groove.
Figure 14 b is the diagram that limits the groove of sheet symbol, shows uniform coating thickness.
Figure 15 is the diagram according to of the present invention, and wherein sheet is encapsulated in the printing opacity protective finish.
Embodiment
I. foreword
The sheet that is used for the concealed anti-false system is sightless by random observation generally.Can adopt certain inspection technology, for example detect at microscopically or with analytical technology such as elemental microanalysis method.In one embodiment, when comprising opaque flakes as the mark of given shape and mixing with loose pigment or other materials, their visual characteristic is complementary basically.In specific embodiment, the inorganic opaque flakes of individual layer that will have selected shape mixes mutually with mica sheet or other basic pigments of flash of light.For the purpose of discussing, the inorganic material of " individual layer " comprises that multilayer is based upon identical inorganic material over each other.
May make in the situation of biochip degraded in heat, solvent, daylight or other factors, need to use inorganic stealthy sheet especially.For example, be used for the inorganic stealthy sheet of explosive even after it is exposed under high temperature and/or the pressure, still can be detected, and in environment, remain unchanged.Sheet according to the embodiment of the invention is also obviously thin than conventional matrix band, and generally approximately less than 10 microns, this can be used in the printing ink them, and produces smooth surface smoothness and needn't use transparent finish paint in coating.According to the density of the thin inorganic sheet of the embodiment of the invention also close to the density of the basic pigment sheet that utilizes similar technique to make.The thick sheet that mixes organic substrate has the density that is different from film basis pigment flakes usually, and may work as carrier when being fluid, before using or during emanate.Sheet segregation is undesirable because it can cause in the potpourri ratio of stealthy sheet and substrate inconsistent, and if segregation cause stealthy sheet excessive concentration, the stealthy characteristic of stealthy sheet is descended.
II. exemplary opaque flakes
Fig. 1 is the planimetric map according to the part of the file with anti-counterfeiting characteristic 12 10 of the embodiment of the invention.At least a portion 14 of anti-counterfeiting characteristic 12 is used and is comprised that printing ink or the coating of the opaque flakes (hereinafter referred to as " stealthy sheet ") that has mark print, and described opaque flakes mixes with loose pigment, described loose pigment such as loose pigment flakes.In one embodiment, stealthy sheet has given shape, for example be square, rectangle, trapezoidal, become " rhombus " or circular.In another embodiment, stealthy sheet comprises the grating pattern that has or do not have selected shape.Preferably, provide selected shape by embossment, etching or use laser instrument, to create framework or border, when removing the sheet stilt interim from them, described along described framework or border fracture.In specific embodiment, grating pattern has grating space, and it is not have optical activity in the visible range of spectrum.That is, these grating patterns do not form visible diffraction grating.Although not every marker slip must be stealthy sheet, stealthy sheet also is also referred to as " mark (taggent) " sheet sometimes.
Usually, loose pigment particles comprises loose pigment flakes, has irregularly shaped.In one embodiment, can be from distinguishing stealthy sheet and loose pigment flakes in shape.As selection, loose pigment flakes has the first selected shape, and stealthy sheet has the second selected shape.The manufacturing of the pigment flakes that is shaped can be finished by multiple technologies, these technology for example utilize patterned substrate to deposit flaky material in substrate, then sheet is separated to obtain pattern such as framework or border with substrate, perhaps utilize laser instrument or other means with according to cutting pattern sheet in the flaky material.The selected shape of stealthy sheet can with other aspects of manufacturing equipment, build date or file 10, perhaps the printing ink that uses when making this document is relevant.
According to the embodiment of the invention, roller is a kind of equipment that can be used for making selected shape or randomly shaped stealthy sheet.Polymeric substrates material roller (being also referred to as " reel (web) ") is passed through the deposition region, and described polymeric substrates material roller coat is covered with one or more layers thin layer.The polymeric substrates roller is come and gone repeatedly pass through the deposition region.Then, sheet is separated and be processed into to thin layer from polymeric substrates.This process also can use other equipment and technology to finish.
Usually, hope will be restricted to less than about 10 microns from the gross thickness of the thin layer (and being removed afterwards) of polymer film substrate roller deposition.PET is a kind of polymer film substrate for roller, and the common thickness of PET film substrate is at least about 13 microns.Thinner PET film is easy to thermal deformation during vacuum deposition process.When it passes through the deposition region, make the temperature of polymeric substrates rise at the heat of deposition region and the heat of condensation of deposit thin film layers.Therefore, from PET film cutting and comprise that the minimum thickness of the sheet of this film is about 13 microns.
In addition, preferably by the framework embossment is obtained sheet with selected shape to substrate, cut apart and rupture along described framework for described, stealthy sheet preferably includes one or more symbols, connects the other forms of mark on boundary in framework or with it, with and/or grating pattern.Before the processed thin layer in blocks of deposition, grating pattern is embossed into the substrate for roller, or otherwise forms.In another embodiment, the deposition substrate surf zone of selected amount (number percent) is had grating pattern or formed patterns by embossment, also processedly obtains a selected amount of stealthy sheet when in blocks to peel off from deposition substrate when thin layer.This technology provides the optical design (thin layer potpourri and thickness) identical with substrate for stealthy sheet.For example, 10% deposition substrate surf zone embossment has grating pattern and/or formed patterns, will obtain having the pigment composition of about 10% stealthy sheet.Show the potpourri of shaping/symbol sheet and these the two kinds of optical designs of unsetting/flat piece as Figure 10.Can adopt same application of vacuum to finish two kinds of optical designs, although this is not preferred.Preferably, obtain having the pigment composition of the different stealthy sheets of measuring with the relief surface zone different deposition substrate roller of manufacturing of different weight percentage, or obtain different shapes and/or grating pattern with the different deposition substrate roller of different pattern embossment.Fig. 2 a is the reduced graph of a part with deposition substrate 11 of embossment part 13 and non-embossment part 15.Embossment partly has framework, in order illustrating this framework to be amplified, and to have grating or symbol as selecting or choose wantonly it, and non-embossment part is smooth substantially.Alternatively, non-embossment part is had different frameworks, grating or symbol by embossment.The surface area of embossment part 13 becomes certain ratio with the surface area of non-embossment part 15 and generates the marker slip (partly being produced by embossment) of selecting quantity, and the marker slip of described selected quantity has and basic sheet (partly being produced by the non-embossment) membrane structure that structure is identical.Deposition substrate 11 is passed sedimentary province (not illustrating) and is moved to roller 19 from roller 17 in roller, but alternative embodiment is used dissimilar substrate and depositing system.Fig. 2 b is the part reduced graph with another deposition substrate 11 ' of embossment part 13 ' and non-embossment part 15 '.
Pigment flakes with identifiable marker can provide anti-counterfeiting characteristic, even it is apparent; Yet, not apparent if having the pigment flakes of identifiable marker, the adulterator may even be unaware of stealthy sheet and exists.One embodiment of the present of invention are used the concealed pigment sheet with optical characteristics identical with basic pigment.Can not observe this concealed pigment sheet by the human eye of any supplementary means, but under the enlargement factor of about 50-1000, can observe this concealed pigment sheet.Concealed pigment sheet with basic identical visual characteristic can mix with basic pigment with the ratio of wide region, and color that can this potpourri of appreciable impact.In certain embodiments, in the potpourri of the basic pigment sheet with similar outward appearance (for example color and/or color track) of the concealed pigment sheet that contains 5%-10% (percentage by weight) and 95%-90% (percentage by weight), the concealed pigment sheet is easy to identify.Usually, use portable microscope (for example " pocket-type (shirt-pocket) " microscope) to be easy to identify formed opaque hidden sheet, and compare the enlargement factor that its identification requirement is littler with the sheet of the similar size with symbol.
Other method is to use the opaque hidden sheet with selected shape, and its color is different with substrate.In one embodiment, opaque hidden sheet is bright metal (" the silvery white ") sheet with aluminum film layer, or other reflection horizon between dielectric material (as MgF2) layer.The light sheet is high reflection at the wide region of visible light usually, but does not have distinctive color usually.For example, the bright sheet with gold and copper production can present for example faint yellow and blush.Have been found that the bright sheet of shaping (for example " rhombus ") that can in painted basic pigment, add between the percentage by weight about 0.25% to about 5%, and can not cause the remarkable change of color, but under the illumination of amplifying about 50X (i.e. 50 times of amplifications), still identify easily.Under illumination was amplified, the shape of sheet and high brightness all can make its same substrate make a distinction.When the bright sheet of employed shaping less than about 0.25% the time, stealthy sheet become be difficult to detected because with the dilution of substrate cause in the visual field shaping light sheet still less.
When the amount of bright sheet surpasses about 5% weight ratio, the sheet of some type, the particularly color of Shen Se sheet (for example tone) will change.In these cases, too many bright sheet " has watered down " color of basic pigment basically.Yet, it is very desirable using the bright sheet that is shaped in having the potpourri of camouflage paint, this is because the shaping of a spot of single type light sheet is added in the pigment flakes of many dissimilar (color and/or color tracks), thereby the shaping of relatively small amount light sheet provides the concealed anti-false feature.Similarly, watering down of color is not critical in following application, and the potpourri that the potpourri that for example comprises pigment and bright sheet can not replace the potpourri that comprises 100% pigment flakes or itself and comprise 100% pigment flakes is easy to distinguish.
Pigment usually mixes to form printing ink or coating in carrier.The example of carrier comprises polyvinyl alcohol (PVA), polyvinyl acetate, polyvinylpyrrolidone, poly-(ethoxy ethylene), poly-(methoxy-ethylene), poly-(propylene) acid, poly-(acrylamide), poly-(ethylene oxide), poly-(maleic anhydride), hydroxyethyl cellulose, cellulose acetate, poly-(carbohydrate) are as gum arabic and pectin, and poly-(acetal) is as polyvinyl butyral, poly-(ethene halogenide) is as polyvinylchloride rope and polyvinylene chloride, poly-(diene) as polybutadiene, poly-(alkene) as tygon, poly-(acrylate) is as polymethyl acrylate, poly-(methacrylate) is as polymethylmethacrylate, poly-(carbonate) as the polyoxygenated carbonyl oxidation support, poly-(ester) as polyethylene terephthalate, poly-(urethane), poly-(siloxane), poly-(sulfide), poly-(sulfone), poly-(ethene nitrile), poly-(vinyl cyanide), poly-(styrene), poly-(penylene) is as poly-(2,5 dihydroxy-1, the 4-phenylene ethylene), poly-(acid amides), natural rubber, formaldehyde resin, other polymkeric substance, and the potpourri of polymkeric substance and polymer solvent.
Fig. 3 a is the simplified plan view in the 14A of anti-counterfeiting characteristic shown in Figure 1 14 part.The 14A part of anti-counterfeiting characteristic is generally observed under the enlargement factor of about 20-300, in order to see the shape of sheet, typically about 5-100 micron is wide for it, and more typical about 20-40 micron is wide.Anti-counterfeiting characteristic utilizes printing ink printing, and this printing ink comprises basic pigment particle 16 and the concealed pigment sheet 18 with selected shape, in this case selected be shaped as " rhombus ".Select optical characteristics and the concentration of concealed pigment sheet, in order to do not disturb the visual appearance that uses the potpourri that the basic pigment particle makes.
In specific embodiment, " rhombus " stealthy sheet is about 25 microns * 35 microns bright sheet.Matrix band passes through the argyle design embossment in PET deposition substrate material roller, makes (for example at MgF for bright sheet deposition Standard Thin film figure then
2Multilayer between the Al of about 100-60nm, every layer of about 400nm is thick).The gross thickness of described bright sheet is about 900nm, and it is about 1 micron.The pattern of embossment is also referred to as " framework " (with being used at sheet or relative at the grating of sheet generation pattern), and is characters cut in relief in certain embodiments, is characters cut in intaglio in other embodiments.When sheet and other erose distributed by predetermined ratio, except the rhombus sheet itself provided to a certain degree stealthy feature, the sheet of rhombus can carry out embossment with other invisible symbol, so its stealthy feature that two grades are provided is with the protection pattern.
The combination of metal level and one or more layers dielectric layer is beneficial to from deposition substrate removes sheet.The pellicular cascade that only has dielectric layer is frangible and has unrelieved stress from deposition process usually.This pellicular cascade is easier to break randomly, causes the sheet that is shaped still less.Metal stacking or individual layer are difficult to be processed to according to the structure of deposition substrate the sheet of patterning completely, and this is because the relative flexible of metal.In specific embodiment, the sheet of good pattern is consequently removed and will form when processed to metal-dielectric and dielectric-metal-dielectric piece the good combination that toughness and brittle nature be provided of gross thickness between about 0.5 micron and about 3 microns from substrate when sheet.In specific embodiment, the shaping light sheet that gross thickness is about 1 micron ductile metal layer between frangible dielectric layer generates about 90% rhombus sheet from the embossment deposition substrate.
Utilize routine techniques that sheet is peeled off and be processed into to thin layer from deposition substrate.The argyle design of embossment has line, and thin layer is the sheet with selected rhombus along this thread breakage.In another embodiment, the rhombus sheet is about 12 microns * 16 microns and comprise grating at the first type surface of sheet.Grating is nominal 2000 lines per millimeters, and is not producing significant diffraction effect with in the potpourri of marking.The shape of 12 microns * 16 micron films easily under 100 enlargement factors as seen; Yet grating is not easy to be seen under this enlargement factor.Grating is apparent in view under 400 enlargement factor.In other embodiments, grating is thicker, and be easy to the enlargement factor of identical (for example 50X to 100X) of the enlargement factor that is used to the identification marking plate shape under see.Thereby, be used to marker slip to provide the grating of anti-counterfeiting characteristic in the visible part of spectrum, needn't have optical activity.
In specific embodiment, the basic pigment particle is to be coated with TiO
2The mica sheet of layer or other dielectric materials.Coating material generally has high relatively refractive index.Mica is the mineral that nature exists, and it is relatively cheap and be processed to substrate sheet easily.When the mica sheet substrate is coated with the high-index material layer of selected thickness, acquisition there is nacreous pigment flakes.The mica sheet substrate can utilize several different methods to be coated with several optional materials.This pigment is commonly called " mica-based " pigment.Using thisly has the photostat of the image of nacreous color-printed to look unlike original work, is desirable thereby provide tangible anti-counterfeiting characteristic with the mica-based pigment sheet.Yet it is unpractiaca making the mica sheet substrate be shaped or provide symbol in the mica sheet substrate.Concealed pigment sheet according to the embodiment of the invention mixes with mica-based pigment, and the concealed anti-false feature is included in the image that uses the printing of mica-based pigment sheet.If the thickness of concealed pigment sheet is approximately five times of quarter-wave optical thickness (" QWOT ") during the selected wavelength in visible spectrum, then by individual layer Inorganic Dielectric Material such as TiO
2Or the concealed pigment sheet made of ZnS can have the outward appearance of the mica-based pigment of being similar to.Generally, the individual layer ZnS concealed pigment sheet for coupling mica-based pigment outward appearance has about 60nm to the thickness of about 600nm.The output of being processed complete dielectric piece by the deposition substrate with embossment argyle design generally is lower than the output of processing corresponding metal-dielectric piece.
Fig. 3 b is the simplification cross section according to the bright pigment flakes 20 of the embodiment of the invention.Reflection horizon 22 is between two dielectric film layers 24,26. Dielectric film layer 24,26 provides rigidity for bright pigment flakes 20, and helps to remove pigment flakes from the substrate of takeup type film applicator.The thickness of wishing to keep bright pigment flakes is less than 10 microns, so that potpourri dry or that solidify is provided on the smooth surface.In specific embodiment, the thickness of sheet is between about 1 micron and about 3 microns.Thinner sheet is because its weight is too little and more difficult and control, and more thick sheet is more firm, therefore more difficultly ruptures along the framework pattern.
Fig. 3 c is the simplification sectional view with bright sheet 20 ' of element reference lamina 28.Light sheet 20 ' has reflection horizon 22 ', 22 between dielectric layer 24 ', 26 ' " and layers 28 of element sign is provided.Element reference lamina 28 is layers of being made by a kind of material, this material can not be found in the basic pigment that uses with bright sheet, and be easy to utilize element analysis technology to detect, these technology are ion microprobe (" SIMS ") for example, energy dispersive X-ray (" EDX ") and auger analysis.In addition, the element sign is present in the stealthy sheet and still is not present in the substrate, and little-SIMS, and little-EDX or little-auger analysis detect this difference easily.Only tagged element is added to (for example a spot of compound that comprises tagged element to be added in the carrier) in the pigment composition and can not solve this anti-counterfeiting characteristic.
Element reference lamina 28 does not have optical activity, because it is at two opaque reflecting layers 22 ', 22 " between.The reflection horizon of selecting 22 ', 22 " have and the identical materials that is used for substrate, for example aluminium.The suitable material that is used for the element sign comprises platinum, iridium, osmium, vanadium, cobalt and tungsten.The element marking material that it will be understood by those skilled in the art that selection depends on the basic pigment that uses therewith.In alternative embodiment, the reflection horizon of bright pigment has element marking material (seeing Fig. 3 b, Reference numeral 22).For example, utilize platinum to mix with the base light paillette or the coloring pigment sheet that utilize aluminium as the reflection horizon as stealthy bright sheet or the coloring pigment sheet in reflection horizon.In a further embodiment, the amount with sheet of the element sign that is comprised in pigment composition or the potpourri is selected in order to the selected element ratio (for example aluminum ratio platinum) in the pigment composition to be provided.In replaceable or further embodiment, select the material (Fig. 3 b, Reference numeral 24,26) of dielectric film layer 24 ', 26 ' so that rubidium marking to be provided.
Fig. 3 d is the simplification sectional view of camouflage paint sheet 30 according to another embodiment of the present invention.Camouflage paint sheet 30 is commonly called five layers of Fabry-Perot interference sheet of symmetry.Pellicular cascade 32 comprises 34, two separation layer 36A of reflective metal layer, 36B and two absorption layer 38A, 38B.Absorption layer generally is the extremely thin semitransparent layer of being made by chromium, carbon or other materials.Reflection, isolation and absorption layer all have optical activity, and namely they help the optical characteristics of camouflage paint sheet.Every side of sheet provides similar Fabry-Perot interference structure for incident light, so sheet is the optics symmetry.As selection, the camouflage paint sheet is complete dielectric pigment flakes or the three-layer tablet of absorption/dielectric/absorption for example.
The optical design by sheet of the color of camouflage paint sheet and color track is that material and the thickness of the layer in the pellicular cascade 32 decides, as in the technology of known optically variable pigments.Generally need select the optical design of camouflage paint sheet 30, with will be complementary with the optical characteristics of its basic pigment sheet that mixes.Camouflage paint sheet 30 is formed (seeing Fig. 3 a, Reference numeral 18), and optionally or replacedly, comprises other marks, for example surface grating pattern and/or element sign.
For example, the reflection horizon comprises the element sign, and the existing reflective metals that is different from the basic pigment sheet comprises the additional elements reference lamina (seeing Fig. 3 c, Reference numeral 28) that has or do not have optical activity again.As selection or additional, separation layer 36A, 36B and/or absorption layer 38A, 38B comprises the element sign.For example, if the basic pigment sheet uses MgF
2, SiO
2Or Al
2O
3As insolated layer materials, then concealed pigment sheet 30 uses for example TiO of different insolated layer materials
2Or ZnS.Isolation and/or absorption marker material comprise the element that utilizes ultimate analysis to be easy to detect.
In certain embodiments, utilize different isolated materials and/or reflecting material to cause concealed pigment sheet 30 to have the optical characteristics that is different from substrate.For example, even stealthy sheet and substrate have similar color when vertical incidence, but the color track may be different.Usually, low-refraction isolated material (MgF for example
2And SiO
2) provide than high index of refraction isolated material (for example ZnS and TiO
2) more color track (" fast moving " pigment).Yet, even the color track of color track and substrate is not accurately to mate, this stealthy sheet also can add in the basic pigment sheet with high relatively concentration, because most of random observation person can not detect according to the potpourri of the embodiment of the invention and the difference between 100% substrate.
Fig. 4 is the cross section that has the varnish 40 of stealthy sheet 42 according to the embodiment of the invention, and described stealthy sheet 42 is dispersed in the carrier 44.Carrier is transparent or the band color, and stealthy sheet 42 has selected concentration to avoid random visual detection.Optional coloured coating or light (for example " chromium plating ") coating 46 have been applied on the object 48 that is positioned at varnish 40 belows.Varnish 40 provides the concealed anti-false feature for object, and does not disturb its outward appearance.In specific embodiment, optional coloured coating 46 is with the image that the printing of pearly luster or camouflage paint is arranged, so that tangible anti-counterfeiting characteristic to be provided to object.For example object is file, product, packing or seal.Varnish 40 can provide the concealed anti-false feature for the object that has the concealed anti-false feature, and can significantly not change the outward appearance of object.For example, if stock has been printed with tangible anti-counterfeiting characteristic, wishing again subsequently provides the concealed anti-false feature to stock, and then chromatography in the above for concealed anti-false characteristic use varnish 40 or similar ink mixture (ink mixture that namely comprises the substantially transparent of stealthy sheet).In another embodiment, Fu Jia concealed anti-false feature is provided for the object that has one or more concealed anti-false features.In a preferred embodiment, the stealthy sheet amount that accounts for varnish is no more than 2%.
Fig. 5 comprises basic pigment sheet 16 and the sectional view of the potpourri 50 (for example printing ink or coating) of the stealthy sheet 18 that is shaped according to another embodiment of the present invention, and described basic pigment sheet 16 and stealthy sheet 18 are dispersed in bonding agent or the carrier 52.Stealthy sheet 18 has selected shape or other marks, for example element sign or surface grating pattern.Potpourri 50 has been applied on the object 48, and described object is label, the packing of product, banknote or the consumer goods for example.
In existing printing ink or coating compound, add the stealthy sheet image that this printing ink or coating makes of can serving as reasons the concealed anti-false feature is provided.For example, the printing ink with camouflage paint is used for being provided as at banknote or other objects the variable color image of tangible anti-counterfeiting characteristic.Stealthy sheet according to the embodiment of the invention is added in the printing ink, and the potpourri that obtains thus is used for the printing image, and it looks and is substantially similar to image with original ink printing.Thereby after adding the concealed anti-false feature, the random observation person of banknote can not notice the apparent change of obvious anti-counterfeiting characteristic (being the variable color image).The mark of stealthy sheet shows for example source (manufacturer) of date of manufacture, printing place and/or printing ink.
III. experimental result
Proposition also detects and utilizes 100% reddish violet to the testing standard of green optically-variable notch board (" OVI ") pigment flakes.The mark sample of light and optically-variable all has the grating pattern of 2000 lines per millimeters, and this makes, and marker slip is easier distinguishes (being the position) and more difficult forgery with substrate.Grating pattern is clearly visible under about 400 enlargement factor, and can not cause visible diffraction characteristic to the image that utilizes the printing of test mixing thing.Believe a spot of marker slip and the generation that does not have to have avoided jointly towards the observer well diffraction effect.In alternative embodiment, comprise meticulousr grating pattern in the marker slip of shaping.Shape is discernible at the microscopically of first enlargement factor, but grating pattern is not easy to be seen under first enlargement factor.Grating pattern can be seen under higher enlargement factor.Believe this grating pattern is included in the hidden property that can further improve marker slip in the marker slip with selected shape or symbol, because the adulterator can see shape or symbol under microscopical detection, but can not see grating pattern, therefore in the article of forging, can not comprise this grating pattern.
First sample (" sample 1 ") comprise 90% (by weight) conventional (basis) reddish violet to viridine green sheet and 10% reddish violet that has grating (" marker slip ") of mixing with it to green OVI pigment flakes.Marker slip detects easily by conventional microscopic examination, and can mate well because of the color of marker slip and the color of substrate, so the color characteristics of potpourri is identical with testing standard.The color-match that approaches needs the production (process) of careful monitoring mark sheet, and the every kind of color that is generally used for mating substrate for the new optical design of every kind of color of marker slip.
Another kind method is to use the marker slip design of standard, and it can use with the substrate of many different colours.Also the bright marker slip (the supposition sheet is " silver color " outward appearance) that utilizes the aluminium reflection horizon has been done evaluation.The manufacturing of light sheet is simple relatively, and when when painted basic pigment sheet mixes, these sheets are to be very easy to detection at 5% o'clock in concentration.The basic pigment of bright marker slip with many colors used, so that the concealed anti-false feature to be provided.The amount of bright marker slip depends on required result in the potpourri.For example, side by side relatively the time, be mixed with 5% bright marker slip and reddish violet to the color characteristics of the notch board potpourri of green OVI basic pigment and be different from the extremely potpourri of green OVI sheet of 100% reddish violet.Use can not be distinguished basically less than potpourri and 100% reddish violet to the green OVI sheet of 5% bright sheet, for example has the potpourri of the bright marker slip of concentration between about 0.25% weight ratio and 3% weight ratio to the green OVI sheet in reddish violet.Believe that concentration can be added in the pigment flakes greater than 5% bright sheet, as long as paler colour or low saturated, can significantly not change the outward appearance of potpourri.Because have selected shape and have the combination of different colours (for example " silver color " replace reddish violet), therefore bright marker slip detects under common enlargement factor easily, though in concentration less than 1% o'clock.
IV. illustrative methods
Fig. 6 is the process flow diagram according to the method 600 of the sheet that makes paints of the embodiment of the invention.The roller substrate (step 602) of (" the smooth ") part that has non-embossment and embossment part is provided, and described non-embossment (" smooth ") part and embossment partly have selected ratio in roller substrate deposition surface zone.In one embodiment, the embossment part is had framework by embossment, for the manufacture of the sheet with selected shape.In alternative embodiment, the embossment part is had grating pattern or symbol by embossment.In alternative embodiment, substrate utilizes for example laser ablation formation pattern of embossment method in addition.At at least one thin layer (step 604) of roller substrate deposition, then the thin layer processing (step 606) in blocks of deposition had the sheet potpourri of selected amount marker slip with generation.The output of marker slip depends on the type of processed thin layer, character, grating pattern or the symbol of structure, and factor such as technological parameter.
For example, with reference to figure 2a and 2b, if the roller substrate surface 10% is had grating or symbol by embossment, the marker slip that then has grating pattern or symbol is contemplated to about 10% output.If 10% embossment of roller substrate surface has diamond structure, then expect about 9% output for dielectric-metal-dielectric piece, because 10% output is lost when the patterning with pellicular cascade partly is processed as matrix band.Similarly, for the complete dielectric piece that is shaped, expect about 5% output, because 50% output is lost when the patterning with pellicular cascade partly is processed as matrix band.
Although the present invention is described according to above-mentioned a plurality of specific embodiments, now description be the invention provides the aspect of remarkable advantage.
One embodiment of the present of invention that remarkable advantage for example is provided are to utilize symbol that framework or border constitute or lived mark by the described border institute frame on the base material, are used to form the coating that is located thereon.
Forward Fig. 7 now to, showed the thin slice picture that has a plurality of Euro symbols, wherein each on sheet
The card-cut border of symbol paripheral zone.This normally by what realize at the bottom of the embossment organic group, for example has structurized
Symbol PET substrate comes coated substrates with removable coating subsequently.Fig. 8 be with sheet from they stilt or substrate photo after separately.This photo clearly illustrates that most of symbols are intact, has only seldom crack to appear in the symbol or passes symbol.By using the present invention, seldom a part of sheet is with fuzzy among this figure
The mode of symbol is broken.Yet shown come out be, when sole fault that sheet deposits from them separately after, framework is not present in all sides of all sheets.Some sheet does not have the border, and other sheets may have one to four border.Yet this is understandable.Because sheet and its nearest sheet are separated in the framework border, so when sheet separates from the border, in a slice described border is arranged usually, and do not have at the sheet that adjoins of described framework border another side.Yet the existence on framework or border causes most several pieces one side at framework to be ruptured along frame line, or provides the sheet relatively uniformly with straight relatively border at another side.Usually, each has the sheet of symbol behind the net or substrate separation of its deposition, has a border or frame section thereon at least.
Fig. 9 is many pictures that have the Mg-Gn sheet of symbol μ, and wherein sheet is owing to stress cracking and the obvious random fracture line that do not have framework to cause, has kept some symbols and has damaged other symbols simultaneously and take place to break at random.Fig. 9 has shown that the stress cracking that runs through sheet causes that the sheet as the fracture result separates.In addition, symbol has been blured in the extension of crackle in sheet.Can not stop stress cracking fully according to structure provided by the invention, but a kind of method can be provided, it can control these crackles largely, so that they occur along frame line or along the frame line preferred routes.Opposite with Fig. 9, provide a kind of mode in Fig. 7 and Fig. 8 embodiment of the invention shown in common, adopt this mode sheet to have kept the integrality of symbol on shape and the sheet to a greater degree along predetermined boundary separation, and generally can not blur the invisible symbol in the sheet.
Appear at crackle in the non-structured symbol and in more frangible, the glazed dielectric material of class, occur and spread, but these crackles continue to spread by the blocking-up of the structure line that sheet provided of framework symbol shown in Figure 7 and along these structure lines.Framework the preferential crackle that can produce along frame line is provided.The most of crackles that observe in Fig. 8 are not the whole thickness that all runs through sheet, but locate to be prevented from metal-cored (Al/Ni/Al) of the more flexible of sheet, and the readability of described metal-cored symbol to original embossment produces harmful hatching effect.
Sheet thickness among Fig. 8 and 9 has 1300 nanometers or 1.3 microns approximately and the structural sheet of Ni/80 nanometer Al/480 nanometer MgF2/10 nanometer Cr of Al/50 nanometer of MgF2/80 nanometer of the Cr/480 nanometer of 10 nanometers is arranged.The obvious characteristic that Ni exists provides magnetosphere.
Referring now to Figure 10,, it is the photo figure that does not contain a plurality of tape frame symbols in any invisible symbol or the frame sheet many, and wherein, the sheet of tape frame symbol is 1: 10 with the ratio of other sheets.Present embodiment has two noticeable aspects.In first detection layers, the hand-held microscope with 100 enlargement factors can detect the existence of the stealthy sheet that has the Euro symbol thereon, and further, the ratio that can estimate stealthy and non-invisible symbol fast is about 1: 10.Again further, can estimate square symbols and randomly shaped ratio so that certain discrimination method to be provided.Therefore, the shape of the symbol in frame shape, distribution and identification can be used to determine whether coating is believable in certain insurance coverage.
Although symbol is fractured into required shape through regular meeting along frame line or groove by the sheet that border or framework surround, as Euro mark in Figure 10 center, still there is the unexpected situation about disconnecting along the embossment line that constitutes symbol of sheet.
Referring now to Figure 11 a,, there is shown the sectional view of the substrate 110 that only defines an array part, more specifically show a complete slice and with it adjacent, will generate the substrate of the subregion of other sheets thereon.In this example embodiment, owing to wish to make sheet 111 disconnections along the framework border that surround, carry word " JDSU " and respective markers by border or framework, so that the sheet squarely, the degree of depth that constitutes the groove 111 of border or framework 111 is wanted the abundant degree of depth greater than the groove that constitutes mark 112 or literal 113.The depth ratio of framework and mark or literal preferably was at least 10: 8, and is preferably bigger, to guarantee sheet (namely in frame slot inside) fracture and cut-out along the framework border.Figure 11 b is the profile analysis figure of embossment relative depth on the display substrate.The groove that limits framework is U-shaped, and the groove that limits mark and literal is V-arrangement, and the former is wide than the latter.Coated substrates and the coating material that constitutes sheet preferably will be in the groove of literal and mark more amount in the packing ratio frame slot.But this will improve the breaking property of framework, but and reduce along the breaking property of the groove of limit literal or mark.Figure 11 c is the normal view of substrate corresponding to Figure 11 a and 11b.
Compare Figure 11 a, Figure 11 d is the substrate of mirror image embossment, and its middle frame is limited by wall, literal and mark then projection from the substrate of substrate.Figure 11 e shows the relative height of these walls, and Figure 11 f then is the normal view of substrate.When the full wafer thin slice was removed from substrate, mark and framework were still limited by wall.
Figure 12 a is a kind of viewgraph of cross-section that adopts the prior art frame sheet, and wherein the groove with literal or mark pattern restriction mark is identical with the groove depth that limits framework.Although show complete double-walled U-shaped framework to show the difference of Figure 12 a and Figure 12 b, after sheet and substrate separation, rupture along the framework passage as chankings, then it still can not have double-walled U-shaped framework usually.Shown in dotted line in order to point out the expection fracture position of sheet with substrate separation the time.Yet because the groove depth among Figure 12 a is all identical with symbol to groove, some sheet might rupture along the symbol groove.By Figure 12 b as can be seen, the height of the groove of qualifier or the degree of depth are about the height of the groove that limits framework or half of the degree of depth.Be that framework will be deeper than symbol.Can guarantee that so most sheets will be along frame slot and the fracture of is-not symbol groove.Depth ratio between frame slot and the symbol groove preferably was at least 3: 2 generally speaking, more preferably 4: 2 or bigger.
Sheet among Figure 12 a and the 12b has uniform coating, and wherein the thickness of sheet is basic identical on top, bottom and sidewall.
Adopt the coating technology of physical vapor deposition (PVD), be about to material with vertical or subvertical track evaporation or be splashed on the substrate, make on top, bottom and the sidewall of sedimentary deposit to have identical thickness.Yet in practice, the PVD deposition can make atom incide on the substrate along the oblique angle, and shown in Figure 13 b, and these oblique angle tracks can produce unusually, forms the variation of thickness.For the track of extreme inclination, will be thinner than the bottom than the coating at the notch place of deep trouth, this needs in this example, because target is to allow sheet rupture along groove.
Depth-width ratio is more big, and the difference between device bottom, top and the sidewall is just more big.This phenomenon is well known in the production of the semiconductor devices with the big feature of depth-width ratio.
The fracture of sheet can realize by different mechanism.
Friction is by applying the breakage that the acting force that is parallel to the sheet surface produces.Cutting is by sheet being applied the breakage that shearing force produces.Compression or bump then are the breakages that produces by the acting force that applies perpendicular to the sheet surface.Breakage may be the combined action result of these mechanism frequently.These mechanism may work with applying in the coating operation in the post-processed of sheet.For example, it is essential for improving printing ink and pigment uniformity coefficient that the material that takes place in the liquid phase married operation grinds (particle interphase interaction or friction).
In specific printing is used, when sheet is forced through screen, the wearing and tearing that caused by mechanical system and the cutting that is formed by mechanical shearing often appear.Such example comprises: in gentle version or photoengraving, or in the rotation silk screen that squeegee forces the printing ink sheet to pass through mesh screen is used, the interaction between the sword sheet in printing ink sheet and the reticulate pattern inking system.This interaction is similar to and is called the method that adopts in " shredding machine " (knife milling) polishing.In the method, abrasive action realizes that by wheelwork wheelwork then uses cutter or sword to cut particle.
By and other sheets between or with post-processed and coating in the high speed machine effect of device therefor, impact grinding can take place.
However, surface imperfection will make the load concentration that is applied on the sheet, form the situation of load skewness.
This load skewness situation is shown in Figure 14 a.The position of depending on breakdown point on the sheet (district), there is local difference in the energy of using.For example consider the breakage that friction causes, the shear stress that the bottom of dark feature produces shown in the zone 1 will be higher than among Figure 14 b the value of shadow character bottom in the zone 2.In addition, as indicated above, the microstructure expection of dark feature bottom is more more fragile than the microstructure at shadow character place.
A kind ofly help sheet along frame line but not along mark line or groove the mode of fracture takes place although the invention provides, a kind of embodiment described below will still can provide protection to it sheet and substrate separation after, in case further be harmful to destruction.Figure 15 shows a sheet that has been encapsulated in the protective finish.
In the present embodiment, can be coated with on the sheet with the high index of refraction dielectric material, as ZnS, TiO
2, SiOx, Al
2O
3Deng, perhaps can be coated with translucent material at dielectric/metallic multilayer sheet, as sol-gel process (SiOx), can improve the observability of symbol.If this sheet is made with low-refraction (n＜1.65) material, and sheet is with high index of refraction (being that n is more than or equal to 1.65) material package, then can be made into to possess dichromatic microstructure sheet.The lamination that present embodiment the comes down to full dielectric layer of high/low/high index of refraction alternately forms, thus constitute a band moulding that possesses hidden function/signed and form the visual effect that is similar to pearlescent pigment.
Advantageously, packaging technology not only can improve the permanance of sheet, can also provide extra function for the microstructure sheet.As everyone knows, (PVD or CVD) is opposite with the vacuum vapor deposition technology, adopts the heterogeneous surface that is encapsulated as that sol-gel process or other wet chemistry methods carry out.For example can use it for the ophthalmic optics coating, to cover cut or other surface imperfection that occurs in the lens die casting process.
In wet chemical technology, might fill vacancy (as the groove in the matrices) with heterogeneity coating encapsulation, reduce on the sheet uneven load of weak section already, to improve fracture characteristics.In contrast, the homogeneity coating then is the essentially identical coating of thickness throughout, and the microstructure of the substrate that deposits with coating is irrelevant.There is the possibility in slit in the filled micro-structure in heterogeneity coating (as the wet-chemical coating), can make sheet " planarization " thus.This point is highly beneficial, because it can realize sheet is carried out the advantage that embossment makes it to present visual effect, and wherein sheet is flattened by this way and can keeps or strengthen this visual effect.
The sheet of accepting the coating embossment in this way has special application aspect " edible sheet ", for example is used for pharmacy and food industry.The material (wherein much ratifying through the edible of FDA) that is used for " edible sheet " comprises dielectric materials such as SiOx, TiOx, AlOx, FeOx.Yet these materials are more frangible than metal or polymeric material; and we have found that instruction according to the present invention makes comparatively people's known " edible jewelry " or " edible sheet "; its middle frame is than the easy fracture more of the mark in the sheet; and use sol-gel process or the coating of other protective finish to have very big advantage, can prevent some fracture that may cause with additive method in the post-processed.
The improvement of fracture characteristics is found in equally with the processing mode of method for packing at the translucent ductile material of sheet coating.In the case, be coated with patch by the mode in vacuum deposit flexible polymer sheet of translucent material.Wherein a kind of suitable depositing operation is so-called plasma polymerization.This technology especially is fit to coating SiOxHy, TiOxHy or COxHy, and they are variants of the plasma enhanced CVD of SiO2, TiO2 and diamond class carbon etc.In addition, some polymkeric substance can adopt the physical vapour deposition (PVD) vapour deposition method or even mode such as sputter with the function of creating the microstructure hidden mark or improve its durability.
Claims (23)
1. many pigment marker slips, each sheet comprises the sedimentary deposit that forms framework, one or more marks and the flat site between described framework and described one or more mark in the described framework, described frame loops is around described periphery, and limited by one or more frame wall, wherein said one or more frame wall have the minimum frame height F of the described flat site of distance
h, described one or more marks are limited by one or more labeled slots, and described one or more labeled slots have the maximum mark degree of depth I of the described flat site of distance
d, F wherein
h＞I
d
2. a plurality of pigment marker slips that limit as claim 1, wherein said sedimentary deposit has upper surface and lower surface, and wherein said one or more frame wall extend downwardly into height F by the lower surface of described flat site
h, and wherein said one or more labeled slots extend downwardly into maximum mark degree of depth I by the lower surface of described flat site
d
3. a plurality of pigment marker slips that limit as claim 1, wherein said one or more symbol or signs of being labeled as.
4. a plurality of pigment marker slips that limit as claim 1, wherein each sheet all has identical symbol or sign.
5. a plurality of pigment marker slips that limit as claim 1, wherein F
h/ I
dBe at least 1.5.
6. a plurality of pigment marker slips that limit as claim 1, wherein each sheet all is encapsulated in the coating.
7. a plurality of pigment marker slips that limit as claim 6, wherein said coating is selected from the group that metal, metal composite, oxide, nitrate, polymkeric substance and metallic ceramics are formed.
8. a plurality of pigment marker slips that limit as claim 1, wherein said one or more labeled slots are V-shaped groove.
9. a plurality of pigment marker slips that limit as claim 8, wherein said one or more frame wall are the part of U-lag.
10. a plurality of pigment marker slips that limit as claim 1, wherein said one or more marks can only can be seen by amplifying.
11. as a plurality of pigment marker slips that claim 2 limits, wherein said sedimentary deposit is be used to the laminated coating that visible optical effect is provided.
12. a mark zone thin slice that is used to form marker slip, it comprises:
A) substrate and be deposited on described on-chip coating, wherein said substrate has the mark in a plurality of frameworks and each described framework through embossment, and has a flat surfaces between described framework and described mark, wherein said framework is limited by frame slot, and described frame slot has the minimum frame depth F of the described flat surfaces of distance
hWherein said mark is limited by labeled slots, and described labeled slots have the maximum mark degree of depth I of the described flat surfaces of distance
d, and F wherein
h＞I
d, so that when described coating is being left described substrate and is being separated into marker slip, along described frame slot than along the easier appearance fracture of described labeled slots, perhaps
B) substrate and be deposited on described on-chip coating, wherein said substrate has the mark in a plurality of frameworks and each described framework through embossment, and has a flat surfaces between described framework and described mark, wherein said framework is limited by frame wall, and described frame wall has the minimum frame height F of the described flat surfaces of distance
hWherein said mark is limited by the mark wall, and wherein said mark wall has the maximum mark height I of the described flat surfaces of distance
d, and F wherein
h＞I
d, so that when described coating is being left described substrate and is being separated into marker slip, along described frame wall than along the easier appearance fracture of described mark wall.
13. as the mark zone thin slice that claim 12 limits, the shape of cross section of wherein said frame slot is different from the xsect of described labeled slots, or the shape of cross section of wherein said frame wall is different from the xsect of described mark wall.
14. as the mark zone thin slice that claim 13 limits, wherein said labeled slots are taper, and wherein said frame slot has a plurality of sidewalls parallel to each other.
15. many pigment marker slips, each sheet comprises the sedimentary deposit that forms framework, one or more marks and the flat site between described framework and described one or more mark in the described framework, described frame loops is around described both sides or more sides, wherein said framework is limited by one or more frame wall, and wherein said frame wall has the minimum frame height F of the described flat site of distance
h, and wherein said one or more mark limits by one or more labeled slots, and described labeled slots have the maximum mark degree of depth I of the described flat site of distance
d, F wherein
h＞I
d
16. as a plurality of pigment marker slips that claim 15 limits, wherein each pigment marker slip scribbles printing opacity heterogeneity coating, to reduce the degree of depth of described one or more labeled slots.
17. as a plurality of pigment marker slips that claim 16 limits, wherein said heterogeneity coating can be with each pigment marker slip planarization effectively.
18. as a plurality of pigment marker slips that claim 16 limits, wherein said heterogeneity coating is sol-gel coating.
19. a plurality of pigment marker slips that limit as claim 1, wherein each pigment marker slip scribbles the heterogeneity coating of the degree of depth that reduces described one or more labeled slots, and wherein said one or more mark can not thicken because of described heterogeneity coating.
20. as a plurality of pigment marker slips that claim 19 limits, wherein said heterogeneity coating can strengthen the contrast between described one or more mark and background, so that described one or more mark is more high-visible.
21. as a plurality of pigment marker slips that claim 19 limits, wherein said pigment marker slip is the edible sheet.
22. as a plurality of pigment marker slips that claim 16 limits, wherein said pigment marker slip is the edible sheet.
23. thin slice that comprises substrate, have the one or more thin layers that deposit in separable mode on the described substrate, when described one or more thin layers are removed from described substrate, to form sheet, in described one or more thin layers, form a plurality of symbol grooves, a plurality of frame slots and a plurality of flat sites between described symbol groove and described frame slot around described symbol groove, wherein said frame slot can provide defiber for described when described one or more thin layers and described substrate separation, and wherein said frame slot is darker than described symbol groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710194967 CN101452658B (en) | 2007-12-07 | 2007-12-07 | Frame or boundary provided surrounding of pigment sheet for stealth anti-counterfeiting application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710194967 CN101452658B (en) | 2007-12-07 | 2007-12-07 | Frame or boundary provided surrounding of pigment sheet for stealth anti-counterfeiting application |
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| Publication Number | Publication Date |
|---|---|
| CN101452658A CN101452658A (en) | 2009-06-10 |
| CN101452658B true CN101452658B (en) | 2013-08-28 |
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| CN104464505B (en) * | 2014-11-28 | 2017-06-06 | 中国科学院深圳先进技术研究院 | A kind of antifalse mark and preparation method thereof |
| US11802212B2 (en) | 2017-09-21 | 2023-10-31 | Giesecke+Devrient Currency Technology Gmbh | Method for producing pigment fragments with a predefined internal and/or external contour using a crack-forming layer, and pigment fragments |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280690A (en) * | 1997-12-02 | 2001-01-17 | 技术图示安全产品有限公司 | Security device having multiple security features and method of making same |
| CN1900178A (en) * | 2005-07-05 | 2007-01-24 | Jds尤尼弗思公司 | Provision of frames or borders around opaque flakes for covert security applications |
-
2007
- 2007-12-07 CN CN 200710194967 patent/CN101452658B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280690A (en) * | 1997-12-02 | 2001-01-17 | 技术图示安全产品有限公司 | Security device having multiple security features and method of making same |
| CN1900178A (en) * | 2005-07-05 | 2007-01-24 | Jds尤尼弗思公司 | Provision of frames or borders around opaque flakes for covert security applications |
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