CN106808835A - Optical anti-counterfeit element and preparation method thereof and optical anti-counterfeiting product - Google Patents
Optical anti-counterfeit element and preparation method thereof and optical anti-counterfeiting product Download PDFInfo
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- CN106808835A CN106808835A CN201510868241.2A CN201510868241A CN106808835A CN 106808835 A CN106808835 A CN 106808835A CN 201510868241 A CN201510868241 A CN 201510868241A CN 106808835 A CN106808835 A CN 106808835A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D15/00—Printed matter of special format or style not otherwise provided for
Abstract
The present invention relates to optical anti-counterfeiting field, a kind of optical anti-counterfeit element and preparation method thereof and a kind of optical anti-counterfeiting product are disclosed, the optical anti-counterfeit element includes the base material with mutually contradictory first surface and second surface；The first fluctuating structure sheaf on the first surface of the base material, focusing element array is formed with the first fluctuating structure sheaf；The second relief fabric layer on the second surface of the base material, second relief fabric layer includes background area and micro- image-text area, the height of the background area and micro- image-text area is different and the plane included angle of border sidewalls between the two and the second surface of the base material in 45 degree, and micro- image-text area not less than being formed with micro- picture and text array；And the focusing element array can carry out sampling synthesis so as to form image to micro- picture and text array.Its colored micro- picture and text array that can expeditiously make high-contrast, high saturation, and the characteristics of with easy to identify and anti-forgery.
Description
Technical field
The present invention relates to optical anti-counterfeiting field, in particular it relates to a kind of optical anti-counterfeit element and its preparation side
Method and a kind of optical anti-counterfeiting product.
Background technology
Recently, a kind of amplification to the More of micro- picture and text array based on microlens array of false proof industry development is made
For producing the anti-counterfeiting technology with dynamic feature or with Deep Canvas.To ensure the figure that More amplifies
Case is all readily identified under the conditions of different environment light sources, and micro- picture and text array and its background need enough
Color or the contrast of brightness.But the line size of micro- picture and text is general in micron dimension, it is difficult to printed with conventional
Brush mode is realized.Patent document CN200680062431.9 is disclosed and is realized micro- picture and text using wiping mode
Preparation method, that is, be initially formed the relief fabric layer with icon sunk structure, then overall coating one
Determine the radiation curable ink of thickness, then struck off the ink outside sunk structure with doctor, finally will
The radiation source of the radiation curable ink doses in sunk structure is by its radiation curing.The method lack
Point is that doctor is difficult to the ink scraped clean of the background area of micro- picture and text, especially for significantly
Film roll (for example 1m is wide) wide, horizontal uniformity is even more and is difficult to control to.In addition, the color of pattern is only
Can be one kind, it is more single.Patent document US20030179364 is disclosed using micro- knot of high-aspect-ratio
Structure realizes the making of micro- picture and text of black.This method technique realizes that feasibility is high, but color effects are poor,
The making of colored micro- picture and text of high brightness high saturation cannot be realized.
Accordingly, it would be desirable to a kind of method that high efficiency makes the colored micro- picture and text array of high-contrast, high saturation.
The content of the invention
It is an object of the invention to provide a kind of optical anti-counterfeit element and preparation method thereof and a kind of optical anti-counterfeiting
Product, it can expeditiously make colored micro- picture and text array of high-contrast, high saturation, and have
The characteristics of having easy to identify and anti-forgery.
To achieve these goals, the present invention provides a kind of optical anti-counterfeit element, the optical anti-counterfeit element bag
Include the base material with mutually contradictory first surface and second surface；On the first surface of the base material
The first fluctuating structure sheaf, be formed with focusing element array in the first fluctuating structure sheaf；Positioned at the base
The second relief fabric layer on the second surface of material, second relief fabric layer includes background area and micro- figure
Literary region, the background area is different with the height of micro- image-text area and border sidewalls between the two
With the plane included angle of the second surface of the base material not less than shape in 45 degree, and micro- image-text area
Cheng Youwei picture and text arrays；And the focusing element array can carry out sampling conjunction to micro- picture and text array
Into so as to form image.
The present invention also provides a kind of optical anti-counterfeiting product using above-mentioned optical anti-counterfeit element.
The present invention also provides a kind of method for preparing optical anti-counterfeit element, and the method includes：Step S1,
The second relief fabric layer is formed on the second surface of base material, second relief fabric layer includes background area
With micro- image-text area, the background area is different with the height of micro- image-text area and side between the two
Boundary side wall is not less than 45 degree, and micro- image areas with the plane included angle of the second surface of the base material
Micro- picture and text array is formed with domain；Step S2, second relief fabric layer on form coating, institute
The thickness for stating coating is less than the difference in height of the background area and micro- image-text area；Step S3,
Form protective layer on the coating, the thickness sum of the coating and the protective layer is less than the background area
The difference in height of domain and micro- image-text area；And step S4, the optics of the protective layer will be formd
Security element is placed in the atmosphere that can be reacted with the coating, until the coating in micro- image-text area and
Untill the protective layer is removed.
Preferably, after step s4, formed in the background area and micro- image-text area
Chromatograph, the dyed layer is different from the color characteristic of the coating.
By above-mentioned technical proposal, due to the background area in the second relief fabric layer and micro- image-text area
Coating color and dyed layer color are presented respectively, therefore when the optical anti-counterfeit element is prepared, can be easy
Ground forms color contrast between background area and micro- image-text area, and causes obtained optical anti-counterfeiting unit
The characteristics of part and product have easy to identify and anti-forgery.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with
Following specific embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the profile of the exemplary optics Security element according to one embodiment of the present invention；
Fig. 2 is the profile of the exemplary optics Security element according to a further embodiment of this invention；
Fig. 3 is the profile of the exemplary optics Security element according to a further embodiment of this invention；And
Fig. 4 to Fig. 7 is cuing open for the method for preparing optical anti-counterfeit element according to one embodiment of the present invention
Face schematic diagram.
Specific embodiment
Describe optical anti-counterfeit element of the invention and preparation method thereof in detail below in conjunction with accompanying drawing
With optical anti-counterfeit element of the invention, to more fully understand thought of the invention.It should be appreciated that
The accompanying drawing and detailed description are description of the preferred embodiment of the present invention, are not come by any way
Limitation the scope of the present invention.
As shown in figure 1, the exemplary optics Security element according to one embodiment of the present invention includes base material
1st, the first fluctuating structure sheaf 7 and the second relief fabric layer 2.Base material 1 has mutually contradictory first surface
And second surface.First fluctuating structure sheaf 7 is located on the first surface of base material 1, first relief fabric
Focusing element array 71 is formed with layer 7.Second relief fabric layer 2 is located on the second surface of base material 1,
Second relief fabric layer 2 includes background area B and micro- image-text area A.The background area B and
The height of micro- image-text area A is different, for example, background area B can be on more micro- image-text area A
It is convex or recessed, the B situations recessed compared to micro- image-text area A in background area is shown in Fig. 1.And
And, the second surface of background area B and micro- image-text area A border sidewalls between the two and base material 1
Plane included angle be not less than 45 degree.Micro- picture and text array 21, concentrating element are formed with micro- image-text area A
Array 71 can carry out sampling synthesis so as to form image to micro- picture and text array 21.
Preferably, base material 1 can be at least local transparent, or coloured dielectric layer, may be used also
With the transparent dielectric film with functional coating (such as adhesion enhancement layer) that is surface, can also be through
Cross the multilayer film being composited.The film material of the general and high mechanical strength good by resistance to physical and chemical performance of base material 1
Material is formed, it is, for example possible to use polyethylene terephthalate (PET) film, poly- naphthalenedicarboxylic acid
The plastic sheeting such as glycol ester (PEN) film and polypropylene (PP) film formed base material 1, preferably by
PET material forms base material 1.
Preferably, the material for forming the first fluctuating structure sheaf 7 and the second relief fabric layer 2 need to have so
Property, i.e., the material can deform under certain temperature and pressure, to form required relief fabric.
For example, the material for forming the first fluctuating structure sheaf 7 and the second relief fabric layer 2 can be selected from thermoplasticity material
Material, radiation curing material etc., are preferably selected from radiation curing material.First fluctuating structure sheaf 7 and second
Lie prostrate structure sheaf 2 thickness (converting into the thickness in flat site) be generally higher than 1 μm, less than 10 μm.
Be preferably located at focusing element array 71 in the first fluctuating structure sheaf 7 can for microwell array,
Micro- grid array, microlens array and other the micro- sample mans that micro- picture and text array 21 can be imaged
At least one of tool.Microwell array, micro- grid array and microlens array can be micro- by multiple respectively
Aperiodic array, cyclic array, part that hole unit, micro- grid cell and lenticule unit are constituted
Cyclic array, randomness array or their any combination.Lenticule unit can be micro- for refractive
Mirror, diffraction type lenticule or combinations thereof.Refractive lenticule can choose sphere, parabola, ellipse
The lenticule based on geometric optics of spherical microlens, cylindrical microlenses or other random geometries or
Their any combination, diffraction type lenticule can choose humorous diffraction microlens, planar diffraction lenticule,
Fresnel zone plate.For example, showing ball of the focusing element array 71 by multiple periodic arrangements in Fig. 1
The situation that face refractive microlens array is constituted.
The micro- picture and text array 21 being preferably located in the second relief fabric layer 2 can be by multiple micro- figures
Aperiodic array that literary unit is constituted, cyclic array, local period array, randomness array or
Their any combination.
Preferably, the periodicity or local period concentrating element in optical anti-counterfeit element of the invention
The array period of array 71 and micro- picture and text array 21 can be 10 μm to 100 μm, focusing element array
71 focal length can be 10 μm to 100 μm.
Preferably, background area B and micro- image-text area A border sidewalls between the two and base material 1
The plane included angle of second surface is preferably 60 ° to 90 °, it is highly preferred that the plane included angle is 90 °.
The purpose for setting steep border sidewalls is able to be readily formed the micro- picture and text of hollow out, that is to say in order to
When preparing optical anti-counterfeit element of the invention, when the second relief fabric layer 2 on form coating 3
Afterwards, the coating 3 that can be readily removable in micro- image-text area A simultaneously retains the plating in the B of background area
Layer 3, so micro- picture and text array 21 is just formed by the void region of coating 3, and product design has been widened significantly
Range, enhance the color contrast between micro- image areas A and background area B.In general,
Background area B and micro- image-text area A border sidewalls between the two are more steep, easier formation hollow out
Micro- picture and text.
The present invention is not limited the micro-structural of the micro- picture and text array 21 inside micro- image-text area A, as long as
It can easily realize hollow out, namely the micro-structural of micro- picture and text array 21 can be flat structures,
Can also be micro undulations structure, such as cycle is 1 μm of balzed grating, spherical crown shape or other are non-flat
Face structure.Preferably, the line thickness of micro- picture and text is generally less than 15 μm in micro- picture and text array 21, preferably
Less than 8 μm, because the line thickness of micro- picture and text is bigger, hollow out is more difficult to.Equally, it is micro- for ease of hollow out
The area of image-text area A is preferably smaller than the area of background area B.
Preferably, the present invention is not also limited the micro-structural inside the B of background area, micro- inside it
Structure can be planar structure, or micro undulations structure.If the micro-structural inside the B of background area
It is planar structure, then the background of micro- picture and text is that mirror effect is presented in optical anti-counterfeit element of the invention.
Fig. 1 is to show a case that background area B is planar structure.If containing miniature in the B of background area
Volt structure, then the background of micro- picture and text is then presented micro undulations structure in optical anti-counterfeit element of the invention
The color effects for causing, such as white, black or other colours.Preferably, it is micro- in the B of background area
The exemplary depth of type relief fabric is generally less than 500nm, preferably smaller than 300nm.Fig. 2 is to show the back of the body
Contain the situation of micro undulations structure in scene area B.
Preferably, as shown in figure 1, in optical anti-counterfeit element of the invention, in the B of background area
Coating 3 is formed with, coating is not formed in micro- image-text area A.The first purpose of coating 3 is to carry
For the window of the micro- picture and text of hollow out, two be that generation is combined with the micro undulations structure in the B of background area is specific
Color effects.For example, working as from the unilateral observation optical anti-counterfeiting of the invention of focusing element array 71
During element, reflection and fluoroscopic observation can see the pattern with dynamic or Deep Canvas；Especially when saturating
During depending on observation, it is seen that the pattern with dynamic or depth of field feature is printing opacity, and the background of pattern is impermeable
Light.For another example, if coating 3 is translucent, during reflective observing, with dynamic or depth of field feature
Picture and text be specific color, during fluoroscopic observation, picture and text are then printing opacities.
Coating 3 can for single-layer metal coating, multiple layer metal coating, single-layer medium layer, multilayer dielectricity layer,
One kind or combination in interference-type multi-layer film structure etc..For example the coat of metal can for Al, Cu, Sn,
One of Ti, Cr, Ni, Au, Ag or combination, thickness are generally 10-60nm.Interference-type is more
Film structure can produce beautiful color effect.General interference-type multi-layer film structure includes absorbed layer, is situated between
Matter layer, reflecting layer, for example, interference-type multi-layer film structure can be Cr/ZnS/Al, thickness is
5nm/350nm/50nm。
Preferably, as shown in Figure 1 to Figure 3, guarantor can also be formed with the coating 3 in the B of background area
Sheath 4.The purpose of protective layer 4 is to protect the coating 3 in the B of background area.Protective layer 4 can be by steaming
Depositing process is formed, for example, can be deposited with inorganic protective layer 4, such as SiO2、MgF2、ZnS、TiN、TiO2、
TiO、Ti2O3、Ti3O5, one kind in ZnO, Cr, Ni, Cu, Sn or combination, then for example also
Organic protection layer 4 can be deposited with, radiation-curable acrylic resin is such as deposited with.In addition, protective layer 4
Can also by printing or coating process be formed, specifically, can print or coating solvent type resinous coat,
Water-base resin coating etc..
Preferably, as depicted in figs. 1 and 2, optical anti-counterfeit element of the invention can also have position
Functional coating 6 in background area B and micro- image-text area A, in the B of background area, the function
Coating 6 is covered on protective layer 4.The functional coating 6 can be single layer structure, or multilayer knot
Structure.The functional coating 6 typically has protective effect, namely protective coating 3 is not corroded by external environment,
Its general effect also having with the bonding of other base materials, for example, bond with paper simultaneously.
, in reflective observing, picture and text are in itself without beautiful color for optical anti-counterfeit element shown in Fig. 1 and Fig. 2
It is color.To make picture and text that there is color in itself, dyed layer 5 can be wholly or partially applied on protective layer 4,
As shown in Figure 3.In figure 3, dyed layer 5 is formed with background area B and micro- image-text area A, should
Dyed layer 5 is different from the color characteristic of coating 3, and in the B of background area, the dyed layer 5 is covered
On the protective layer 4.Dyed layer 5 can be ink, pigment, dyestuff, photochromatic printing ink, co-extrusion light
Become film, single-layer metal coating, multiple layer metal coating, single-layer medium layer, multilayer dielectricity layer, interference-type many
One kind or combination in film structure, liquid crystal light change layer.If dyed layer 5 is translucent, reflect
Pattern has color effect during observation, and pattern has translucent effect during fluoroscopic observation.
The background area B of the optical anti-counterfeit element shown in Fig. 3 has planar structure, certainly, with Fig. 2
Shown optical anti-counterfeit element is similar to, can also in the background area B of optical anti-counterfeit element shown in Fig. 3
Contain micro undulations structure.
Optical anti-counterfeit element of the invention is particularly suitable for being fabricated to opened window safety line.With the windowing
The cheque paper of safety line is used for the false proof of all kinds of high safety products such as banknote, passport, marketable securities.This Shen
Please Security element can apply to the form such as mark, thermoprint bar wide, joint strip, safety line transfer or paste
On carrier.These carriers can be the safety product high such as banknote, security, credit card, passport,
Can be high added value commodity.
The present invention also provides a kind of method for preparing optical anti-counterfeit element.Below with reference to Fig. 4 to Fig. 7 institute
The profile that shows describes preparation in accordance with the present invention.
First, in step sl, the second relief fabric layer 2 is formed on the second surface of base material 1.
As shown in figure 4, second relief fabric layer 2 includes background area B and micro- image-text area A, the back of the body
The height difference and border sidewalls between the two and the base of scene area B and micro- image-text area A
The plane included angle of the second surface of material 1 is formed with being not less than 45 degree, and micro- image-text area A
Micro- picture and text array 21.
Preferably, background area B and micro- image-text area A border sidewalls between the two and base material 1
The plane included angle of second surface is preferably 60 ° to 90 °, it is highly preferred that the plane included angle is 90 °.
The purpose for setting steep border sidewalls is able to be readily formed the micro- picture and text of hollow out, and this will be with reference to following
The step of S4 be described in detail.
Preferably, in order to easily carry out hollow out in subsequent step, the line thickness of micro- picture and text can not mistake
Greatly, generally less than 15 μm, preferably smaller than 8 μm.Equally, for ease of hollow out, micro- image-text area A's
Area is preferably smaller than the area of background area B.
Step S2, forms coating 3, as shown in figure 5, the coating 3 on the second relief fabric layer 2
Thickness less than the background area B and micro- image-text area A difference in height, in order to follow-up energy
It is enough easily to carry out hollow out.Preferably, coating 3 is typically covered with the second relief fabric 2 homotype of layer.And
And, the structure of the second relief fabric layer 2 is caused formed in the horizontal zone of the second relief fabric layer 2
Coating 3 thickness it is thicker, and at border sidewalls between micro- image-text area A and background area B
Thickness it is then relatively thin, or even discontinuously.
Step S3, forms protective layer 4, as shown in fig. 6, the coating 3 and the guarantor on coating 3
Difference in height of the thickness sum of sheath 4 less than the background area B and micro- image-text area A, with
It is easy to subsequently can easily carry out hollow out.Protective layer 4 can be by way of evaporation, coating and printing
Formed.Similarly, the structure of the second relief fabric layer 2 is caused in micro- image-text area A and background area B
Between border sidewalls at the thinner thickness of protective layer 4 that is formed, or even discontinuously, thus its protectiveness
It is poor；And the protective layer 4 formed in the B of background area is then continuously sprawled, without tender spots and its protection
Property is preferable.
Step S4, the optical anti-counterfeit element that will form the protective layer 4 is placed in and can be reacted with coating 3
Atmosphere in, untill the coating 3 and protective layer 4 in micro- image-text area A are removed, such as Fig. 7
It is shown.
As analyzed in step s3, due to the side between micro- image-text area A and background area B
The thinner thickness of the protective layer 4 that boundary's side-walls are formed, or even discontinuously, its protectiveness is poor, therefore goes
Coating atmosphere can relatively easily reach coating 3, and corrosion coating 3 and/or destruction coating 3 and second rise and fall and ties
Fastness between structure layer 2.Because micro- picture and text lines are thinner, therefore, the coating 3 in micro- image-text area A
It is removed easily, especially under the auxiliary of extraneous physical action, such as the water of big pressure, felt cloth
Friction etc..Removed simultaneously in coating 3, protective layer 4 thereon is also stripped, so that easily landform
Into the micro- picture and text of hollow out.And in the B of background area, because protective layer 4 is continuously sprawled, tender spots is little,
Coating 3 therefore, it is possible to be effectively protected in the region is not corroded and is retained.De-plating atmosphere one
As selection be liquid.For example, when Al is coating 3, de-plating atmosphere can be alkali lye (such as NaOH
Solution), or acid solution (such as phosphoric acid solution).
In addition, before or after any of the above described step, can be in the base material 1 and described second
The first fluctuating structure sheaf 7 is formed on the mutually contradictory first surface in surface, in the first fluctuating structure sheaf 7
It is formed with focusing element array 71.
So far the preparation of optical anti-counterfeit element of the invention is just completed.The making effect of the preparation method
Rate is high, technology controlling and process is easy, suitable large-scale production, and can effectively widen the range of product design,
The pattern of multiple color can be realized being made on same optical anti-counterfeit element simultaneously.
Preferably, preparation in accordance with the present invention can also include：After step s4, described
Dyed layer 5, the dyed layer 5 and the coating 3 are formed in background area B and micro- image-text area A
Color characteristic it is different.In this way, it is possible to make micro- picture and text that also there is color in itself.
Preferably, preparation in accordance with the present invention can also include：Work(is formed on the dyed layer 5
Can coating 6.The functional coating 6 typically has protective effect, namely protective coating 3 is not by external environment
Corrosion, while its general effect also having with the bonding of other base materials, such as bond with paper.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited
Detail in above-mentioned implementation method, in range of the technology design of the invention, can be to the present invention
Technical scheme carry out various simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment,
In the case of reconcilable, can be combined by any suitable means.In order to avoid unnecessary
Repeat, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as its
Without prejudice to thought of the invention, it should equally be considered as content disclosed in this invention.
Claims (19)
1. a kind of optical anti-counterfeit element, the optical anti-counterfeit element includes：
Base material (1) with mutually contradictory first surface and second surface；
The first fluctuating structure sheaf (7) on the first surface of the base material (1), first fluctuating
Focusing element array (71) is formed with structure sheaf (7)；
The second relief fabric layer (2) on the second surface of the base material (1), second fluctuating
Structure sheaf (2) includes background area (B) and micro- image-text area (A), the background area (B) and
The height difference and border sidewalls between the two and the base material (1) of micro- image-text area (A)
The plane included angle of second surface is formed with micro- figure in being not less than 45 degree, and micro- image-text area (A)
Literary array (21)；And
The focusing element array (71) can to micro- picture and text array (21) carry out sampling synthesis from
And form image.
2. optical anti-counterfeit element according to claim 1, wherein, the focusing element array is
At least one of microwell array, micro- grid array and microlens array.
3. optical anti-counterfeit element according to claim 2, wherein, the microwell array, micro-grid
Lattice array and microlens array are with aperiodic array, cyclic array, local period array, random
Property array or their any combination place.
4. optical anti-counterfeit element according to claim 1, wherein, the plane included angle is 60 °
To 90 °.
5. optical anti-counterfeit element according to claim 1, wherein, micro- picture and text array (21)
In micro- picture and text line thickness be less than 15 μm.
6. optical anti-counterfeit element according to claim 1, wherein, micro- picture and text array (21)
In micro- picture and text line thickness be less than 8 μm.
7. optical anti-counterfeit element according to claim 1, wherein, micro- image-text area (A)
The area ratio of area and the background area (B) be less than 1:1.
8. optical anti-counterfeit element according to claim 1, wherein, in the background area (B)
Contain at least one of planar structure and micro undulations structure.
9. optical anti-counterfeit element according to claim 8, wherein, in the background area (B)
Micro undulations structure depth be less than 500nm.
10. optical anti-counterfeit element according to claim 8, wherein, the background area (B)
In micro undulations structure depth be less than 300nm.
11. optical anti-counterfeit element according to any claim in claim 1 to 10, wherein,
Coating (3) is formed with the background area (B), there is no coating in micro- image-text area (A).
12. optical anti-counterfeit elements according to claim 11, wherein, the background area (B)
In coating (3) on form matcoveredn (4).
13. optical anti-counterfeit elements according to claim 12, wherein, the background area (B)
Dyed layer (5) is also formed with micro- image-text area (A), the dyed layer (5) and the coating
(3) color characteristic is different, and in the background area (B), dyed layer (5) covering
In the protective layer (4).
14. optical anti-counterfeit elements according to claim 13, the optical anti-counterfeit element also includes covering
The functional coating (6) covered on the dyed layer (5).
A kind of 15. optical anti-counterfeiting units using according to any claim in claim 1 to 14
The optical anti-counterfeiting product of part.
A kind of 16. methods for preparing optical anti-counterfeit element, the method includes：
Step S1, the second relief fabric layer (2) is formed on the second surface of base material (1), this second
Relief fabric layer (2) includes background area (B) and micro- image-text area (A), the background area (B)
And border sidewalls between the two and the base material (1) different with the height of micro- image-text area (A)
Second surface plane included angle it is micro- not less than being formed with 45 degree, and micro- image-text area (A)
Picture and text array (21)；
Step S2, second relief fabric layer (2) on form coating (3), the coating (3)
Difference in height of the thickness less than the background area (B) and micro- image-text area (A)；
Step S3, protective layer (4) is formed on the coating (3), the coating (3) and described
The thickness sum of protective layer (4) is less than the background area (B) and micro- image-text area (A)
Difference in height；And
Step S4, foring the optical anti-counterfeit element of the protective layer (4), be placed in can be with the coating
(3) in the atmosphere of reaction, until the coating (3) in micro- image-text area (A) and the protection
Untill layer (4) is removed.
17. methods according to claim 16, wherein, the plane included angle is 60 ° to 90 °.
18. methods according to claim 16, the method also includes：After step s4, exist
Dyed layer (5), the dyed layer are formed in the background area (B) and micro- image-text area (A)
(5) color characteristic from the coating (3) is different.
19. methods according to claim 18, the method also includes：In the dyed layer (5)
Upper formation functional coating (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510868241.2A CN106808835B (en) | 2015-12-01 | 2015-12-01 | Optical anti-counterfeit element and preparation method thereof and optical anti-counterfeiting product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868241.2A CN106808835B (en) | 2015-12-01 | 2015-12-01 | Optical anti-counterfeit element and preparation method thereof and optical anti-counterfeiting product |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149336A1 (en) * | 2017-02-20 | 2018-08-23 | 中钞特种防伪科技有限公司 | Optical security component and optical security product utilizing same |
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| CN110415601A (en) * | 2018-04-26 | 2019-11-05 | 中钞特种防伪科技有限公司 | Optical anti-counterfeit element and preparation method thereof |
| CN108773229A (en) * | 2018-06-12 | 2018-11-09 | 王海宇 | False proof device and manufacturing method and security document |
| CN109285439A (en) * | 2018-09-25 | 2019-01-29 | 武汉华工图像技术开发有限公司 | A kind of graphic anti-counterfeiting structure and preparation method thereof based on microlens array |
| CN110014762A (en) * | 2019-04-17 | 2019-07-16 | 深圳市柏星龙创意包装股份有限公司 | Gilding film and its manufacture craft, decoding piece and its manufacture craft, anti-fake coding/decoding method |
| WO2021031953A1 (en) * | 2019-08-19 | 2021-02-25 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
| CN114340906A (en) * | 2019-08-19 | 2022-04-12 | 克瑞尼股份有限公司 | Micro-optical security device with color gamut |
| CN112389111A (en) * | 2019-08-19 | 2021-02-23 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and optical anti-counterfeiting product |
| CN112505805A (en) * | 2019-08-26 | 2021-03-16 | 昇印光电（昆山）股份有限公司 | Imaging film and electronic equipment shell |
| CN114475044A (en) * | 2020-11-11 | 2022-05-13 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element, manufacturing method thereof and anti-counterfeiting product |
| WO2022100463A1 (en) * | 2020-11-11 | 2022-05-19 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and manufacturing method therefor, and anti-counterfeiting product |
| CN114475044B (en) * | 2020-11-11 | 2023-03-10 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element, manufacturing method thereof and anti-counterfeiting product |
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Address after: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee after: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee before: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |