CN108239893B - Security element and its manufacturing method and security document - Google Patents
Security element and its manufacturing method and security document Download PDFInfo
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- CN108239893B CN108239893B CN201810061827.1A CN201810061827A CN108239893B CN 108239893 B CN108239893 B CN 108239893B CN 201810061827 A CN201810061827 A CN 201810061827A CN 108239893 B CN108239893 B CN 108239893B
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- security element
- ink
- bearing bed
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
Abstract
A kind of Security element and its manufacturing method and security document, Security element includes bearing bed (1), magnetic optically ink layer (2) and microlens layer (3), the bearing bed (1) being made of polymer material includes upper and lower surfaces, the magnetic optically ink layer (2) includes the magnetic code (4) according to predetermined order arrangement and the first gap of mutual interval, each magnetic code (4) includes at least in the cross sectional shape being parallel on bearing bed direction along the inclined bevel edge of orientation (5), at the position that the correspondence first that microlens layer (3) is located at the bearing bed (1) lower surface is spaced, microlens layer (2) includes the cone microlens array (14) of concave-convex micro-structure described in register (13), the cone lenslet diameter of the cone microlens array (14) is 2 0 μm to 30 μm.
Description
Technical field
The invention belongs to anti-counterfeit fields, more particularly to a kind of Security element and its manufacturing method and security document.
Background technique
Secure file must have the security feature for making it difficult to forge and prevent from forging as far as possible these files.Safety member
Part is for protecting secure file and/or valuable document with anti-counterfeiting or duplication.Here it is known that making peace of the secure file with light transmission
Full feature can check the security feature when observing in transmitted light, and can provide especially high prevent using colored multiple
The safety that print machine is copied.
It is known that such as passport photograph shown in single printing layer is made with anti-counterfeiting with safety member from practice
The protective film of part is pasted or is laminated at least on the partial region of passport photograph.Because this safety element is not individualized
, so unauthorized personnel can take this protective film with safety element off without damage, and use this guarantor
Secure files and/or valuable element of the shield film for example to be forged by being applied to others for manufacturing the pseudo- forging piece of coining,
Or by changing or replacing personalized all information (such as passport photograph) and re-apply safety element.It is anti-in optics
Pseudo- field, it is a kind of common optical anti-counterfeiting form that being formed using color change, which has effect unique,.By certain form, by light
It learns Security element and forms a kind of bright chromatic colour, the attention of observer can be attracted, the attention of observer is concentrated
In required position.When observer changes viewing angle, such as oblique optical Security element, or change the illumination of light source
Direction, or change the direction of observation of observer, gradual change or mutation occur for the color of the optical anti-counterfeit element, and formation is different from most
Other colors of first color.The identification of this color change is simple, and without carrying out excessive education to observer, observer can be
In the extremely short time, such as in several seconds time, the significant difference between two kinds of colors is found.
Security document disclosed in patent document CN104169098 includes carrier substrates (1), at least transparent on partial region
Membrane component (2) and adhesive phase (3), carrier substrates have carrier layer (10) and heat susceptible coating (11), the heat susceptible coating energy
Color change occurs by heat effect, there is membrane component at least one to be equipped with the dress of at least one optical anti-counterfeiting mark (51,52)
It adorns layer (24,25), adhesive phase (3) is arranged between membrane component (2) and carrier substrates (1), and heat susceptible coating (11) setting is viscous
The membrane component between mixture layer (3) and carrier layer (10) and when perpendicular to by the planar observation constituted on the upside of carrier substrates
(2) heat susceptible coating (11) are covered at least on partial region, the carrier substrates (1) include heat-sensitive paper and/or the carrier layer
(10) it is coated with heat susceptible coating (11) and the heat susceptible coating (11) at least extends to the body of carrier layer (10) on partial region
In product.The patent is arranged between membrane component and carrier layer by heat susceptible coating, so that heat-sensitive layer and being written in the region
Data can not be approached freely again and be prevented by membrane component and distort trial.But the patent anti-counterfeiting characteristic is single, it is imitated to be easy and
Antifalse effect is poor.
A kind of anti-counterfeit structure body disclosed in patent document CN103562803 is by least embossment forming layer, the 1st reflection
Anti-counterfeit structure body made of layer, functional thin film layer, the 2nd reflecting layer and protective layer stack gradually, the cambial list of embossment
Side has embossment structure, which has at least part wavelength region diffraction, scattering, absorption, polarization it will be seen that light
Isolated effect；1st reflecting layer, functional thin film layer are arranged by entire surface along the bumps of embossment structure；2nd reflection
Layer is arranged on the arbitrary region of concave-convex a part of covering embossment structure；The protective layer is anti-according to only covering the described 2nd
The mode for penetrating the region of layer is arranged；And the 1st reflecting layer, functional thin film layer and this 3 layers of the 2nd reflecting layer make visible light
At least part region interfere.The patent reflects optics produced by embossment by pigmented reflective embossment structure and netrual colour
Effect, but the patent anti-counterfeiting characteristic is single, it is poor to be easy imitated and antifalse effect.
Safety element disclosed in patent document CN103370206 (1), particularly marketable securities, comprising by one or more
The area of the pattern (21) and the one or more of area of the pattern is surrounded at least on partial region that design element (22) forms
The background area (20) of a design element, the shape of the area of the pattern provide can the first information seen of vision, wherein safety
Element (1) has opaque reflecting layer, which is not arranged in background area (20) and in area of the pattern (21)
Be arranged in each firstth area (31) but be not arranged in one or more secondth areas or be arranged in one or more secondth areas,
But it is not arranged in each firstth area (31), wherein each firstth area (31) is separated from each other less than 300 μm and has less than 300 μm
Minimum dimension.It is poor that the patent is easy imitated and antifalse effect.
Therefore, this field is badly in need of technical problems to be solved and is, that is, provide a kind of Security element and its manufacturing method and
Security document, wherein Security element has combination optical antifalse effect and a variety of anti-counterfeiting characteristic collective effects, detection can be used
Equipment is detected, and counterfeit difficulty is high, antifalse effect is good.
Disclosed above- mentioned information are used only for enhancing the understanding to background of the present invention in the background section, it is thus possible to
Information comprising not constituting the prior art known to a person of ordinary skill in the art in home.
Summary of the invention
The purpose of the present invention is be achieved by the following technical programs.
An aspect of of the present present invention, a kind of Security element include bearing bed, magnetic optically ink layer and microlens layer, by polymerizeing
The bearing bed that object material is constituted includes upper and lower surfaces, and the magnetic optically ink layer is located at table on the bearing bed
Face.
The magnetic optically ink layer includes compiling according to predetermined order arrangement and the magnetic of the first gap of mutual interval
Code, each magnetic code include at least inclined tiltedly along orientation in the cross sectional shape being parallel on bearing bed direction
Side, the tilt angle of the bevel edge are in 20-80 degree, and each magnetic code is formed perpendicular to coining on bearing bed direction
Dentation diffraction structure, the dentation diffraction structure include having the first tooth of multiple first tilt angles and multiple having second to incline
Second tooth of rake angle, depositing metallization on the inclined surface of the first tooth, dielectric layer are vapor-deposited in the metalization layer
On, on said dielectric layer, ink indicia layer arrangement is in the second gap, liquid for arranged for interval with gap according to second for clear coat
Brilliant oriented layer is covered on the clear coat and ink indicia layer, and second tooth is equipped with sub-wave length grating embossment structure,
The sub-wave length grating embossment structure period is 280nm to 320nm and has the period side opposite with the dentation diffraction structure
To coating has the reflecting layer of Fabry-Perot cavity on the sub-wave length grating embossment structure, sets in first gap
There is the concave-convex micro-structure of optically-variable, the depth of concave-convex micro-structure is between 0.6-0.7 microns, and microlens layer is located at described hold
At the position in the first gap of correspondence of carrier layer lower surface, microlens layer includes the cone lenticule of concave-convex micro-structure described in register
Array, the cone microlens array diameter are 20 μm to 30 μm.
In the Security element, the bearing bed is by polyvinyl chloride, polycarbonate or polymethyl methacrylate structure
At with a thickness of 10 to 15 microns of flexible transparent layer.
In the Security element, the magnetic optically ink layer contains the first magnetic particle and the second magnetic particle,
Wherein, the coercivity of the first magnetic particle is greater than the coercivity of the second magnetic particle, and the residual induction of the first magnetic particle is substantially etc.
In the residual induction of the second magnetic particle, the proportion of the first magnetic particle and the second magnetic particle is 5:2.
In the Security element, if each magnetic code is in the cross sectional shape being parallel on bearing bed direction
The combination of dry triangle and several squares, the tilt angle of the bevel edge is respectively 30 degree, 45 degree and 60 degree.
In the Security element, the range of first tilt angle is 30-60 degree, second tilt angle and
First tilt angle is opposite.
In the Security element, the metalization layer be vapor plating copper alloy layer and with a thickness of 20 nanometer -40
Nanometer, the dielectric layer be vapor-deposited ZnSe layer and with a thickness of 30 nanometers -60 nanometers, clear coat is polymer coating
And with a thickness of 50-80 nanometers, ink indicia layer is the thickness that UV solidified oil layer of ink and thickness are less than the clear coat, and liquid crystal takes
To layer include offset it is red with a thickness of 30-50 nanometer of the first nematic crystal oriented layer and offset it is blue with a thickness of 30-
50 nanometers of the second nematic crystal oriented layer.
In the Security element, second tooth, sub-wave length grating embossment structure and have Fabry-Perot resonance
The reflecting layer of chamber forms interference and diffraction joint effect.
The magnetic optically ink layer is greater than coercitive first magnetic field of the first magnetic particle by coercivity, then passes through
Cross coercitive second magnetic field of the coercivity less than the second magnetic particle, the magnetism of the magnetic direction in the second magnetic field and the first magnetic field
It is contrary, finally pass through UV solidification equipment.
In the Security element, all magnetic code forms the first pattern, and the first all teeth forms the
Two patterns, all ink indicia layers form the third pattern for corresponding to the second pattern, and the second all teeth forms the 4th pattern,
All concave-convex micro-structures form the 5th pattern.
A kind of the step of another aspect of the present invention, the method for Security element described in manufacture includes
First step provides the bearing bed with upper and lower surfaces；
Second step prints magnetic code according to predetermined order arrangement and between each other the first gap of interval and forms magnetic light
Sensitive ink layer, the magnetic optically ink layer are greater than coercitive first magnetic field of the first magnetic particle by coercivity, then
Coercitive second magnetic field by coercivity less than the second magnetic particle, the magnetic of the magnetic direction in the second magnetic field and the first magnetic field
Property it is contrary, finally by UV solidification equipment solidify；
Third step, intaglio printing curable ink and radiation curing form the concave-convex micro- of optically-variable in the first gap
The depth of structure, concave-convex micro-structure is between 0.6-0.7 microns；
Four steps forms dentation diffraction structure, institute perpendicular to coining on bearing bed direction in each magnetic code
Stating dentation diffraction structure includes multiple first teeth with the first tilt angle and multiple second teeth with the second tilt angle,
Depositing metallization on the inclined surface of first tooth, dielectric layer be vapor-deposited in the metalization layer, clear coat according to
Second on said dielectric layer, ink indicia layer set is imprinted on the second gap to arranged for interval, and liquid crystal aligning layer is covered on gap
On the clear coat and ink indicia layer,
5th step partly solidifies sub-wave length grating embossment structure, the sub-wave length grating embossment knot on the second tooth
The structure period is 280nm to 320nm and has the period direction opposite with the dentation diffraction structure, the sub-wave length grating embossment
Coating has the reflecting layer of Fabry-Perot cavity in structure；
6th step, register arranges microlens layer at the position in the first gap of correspondence of the bearing bed lower surface, micro-
Lens jacket includes the cone microlens array of concave-convex micro-structure described in register, and the cone of the cone microlens array is micro-
Lens diameter is 20 μm to 30 μm.
Another aspect of the present invention, a kind of for anti-fake security document includes the Security element.
It is an advantage of the present invention that the present invention provides a variety of interactions by the collective effect of the first to the 5th pattern
Antifalse effect, each magnetic code is included at least in the cross sectional shape being parallel on bearing bed direction to incline along orientation
The tilt angle of oblique bevel edge, the bevel edge is in 20-80 degree, and the magnetic code with bevel edge is different from existing symmetrical magnetism
Coding makes detection waveform have unique antifalsification, in turn by the tilt angle of the bevel edge and bevel edge that control magnetic code
The antifalsification of Security element is significantly improved, the second pattern and third pattern on the first tooth have correspondence, metalization layer, electricity
The interaction of dielectric layer, clear coat, ink indicia layer and liquid crystal aligning layer improves optical anti-counterfeiting effect, right when inclined
Pre-color carries out offset and the second pattern and the difference of third pattern color are obvious, improves recognition effect, second tooth, Asia
Wave length grating embossment structure and reflecting layer with Fabry-Perot cavity form interference and diffraction joint effect, San Zhexiang
It can be further improved antifalse effect under interaction；The cone microlens array of concave-convex micro-structure described in register further increases
Antifalse effect, Security element of the invention have combination optical antifalse effect and a variety of anti-counterfeiting characteristic collective effects, can make
It is detected with detection device, counterfeit difficulty is high, antifalse effect is good.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
By reading the detailed description in hereafter preferred embodiment, various other advantages and benefits of the present invention
It will become apparent to those of ordinary skill in the art.Figure of description only for the purpose of illustrating preferred embodiments,
And it is not to be construed as limiting the invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.And throughout the drawings, identical component is presented with like reference characters.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram of Security element according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the magnetic code cross sectional shape of Security element according to an embodiment of the invention；
Fig. 3 is the step schematic diagram of manufacture Security element according to an embodiment of the invention.
Below in conjunction with drawings and examples, the present invention will be further explained.
Specific embodiment
The specific embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although being shown in attached drawing of the invention
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that having used some vocabulary in the specification and claims to censure specific components.Ability
Field technique personnel it would be appreciated that, technical staff may call the same component with different nouns.This specification and right
It is required that not in such a way that the difference of noun is as component is distinguished, but with the difference of component functionally as differentiation
Criterion."comprising" or " comprising " as mentioned throughout the specification and claims are an open language, therefore should be solved
It is interpreted into " including but not limited to ".Specification subsequent descriptions are to implement better embodiment of the invention, so the description be with
For the purpose of the rule of specification, the range that is not intended to limit the invention.Protection scope of the present invention is when the appended right of view
It is required that subject to institute's defender.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each attached drawing does not constitute the restriction to the embodiment of the present invention.
Fig. 1 be one embodiment of the present of invention Security element structural schematic diagram, the embodiment of the present invention will in conjunction with Fig. 1 into
Row illustrates.
The task that the present invention is based on is to improve the antifalsification of security document, especially ticket and ticket.Such as Fig. 1 institute
Show, An embodiment provides a kind of Security element, Security element includes bearing bed 1,2 and of magnetic optically ink layer
Microlens layer 3, the bearing bed 1 being made of polymer material include upper and lower surfaces, the magnetic optically ink layer 2
It is located at 1 upper surface of bearing bed, the magnetic optically ink layer 2 includes that the is arranged and be spaced between each other according to predetermined order
The magnetic code 4 in one gap, each magnetic code 4 are included at least in the cross sectional shape being parallel on bearing bed direction along row
The inclined bevel edge 5 of column direction, the tilt angle of the bevel edge 5 are in 20-80 degree, and each magnetic code 4 is perpendicular to holding
Coining forms dentation diffraction structure on carrier layer direction, and the dentation diffraction structure includes multiple having the first of the first tilt angle
Tooth 6 and multiple second teeth 15 with the second tilt angle, depositing metallization 7 on the inclined surface of the first tooth 6, dielectric layer
8 vapor deposition in the metalization layer 7, clear coat 9 according to second with gap arranged for interval on the dielectric layer 8,
Ink indicia layer 10 is arranged in the second gap, and liquid crystal aligning layer 11 is covered on the clear coat 9 and ink indicia layer 10, institute
The second tooth 15 is stated equipped with sub-wave length grating embossment structure 16, the sub-wave length grating embossment structure period is 280nm to 320nm
And there is the period direction opposite with the dentation diffraction structure, coating has method cloth on the sub-wave length grating embossment structure 16
In-reflecting layer 12 of Perot resonator cavity, the concave-convex micro-structure 13 of optically-variable, concave-convex micro-structure 13 are equipped in first gap
Depth be between 0.6-0.7 microns, microlens layer 3 is located at the position in the first gap of correspondence of 1 lower surface of bearing bed
Place, microlens layer 2 include the cone microlens array 14 of concave-convex micro-structure 13 described in register, the cone microlens array
14 cone lenslet diameter is 20 μm to 30 μm.
In the present invention, bearing bed 1 is transparent or translucent, wherein translucent mean in the context of the present invention
The light of transmission is substantially scattered or is spread, and " transparent ", which refers to, to be greater than 50% in human eye visible wavelength region, is further preferably big
In 80%, further preferably greater than 90% transmissivity.
In the present invention, bearing bed 1 provides the supporting body of safety element, and bearing bed 1 can transmit visible light or can not
Light-exposed, thus anti-fake by carrying out the effects of the coating of upper surface 2 and lower surface 3 reflects and reflects, the present invention passes through all
The magnetic code 4 form the first pattern, all the first tooth 6 forms the second pattern, all formation of ink indicia layer 10
Corresponding to the third pattern of the second pattern, all the second tooth 15 forms the 4th pattern, and all concave-convex micro-structures 13 form the
Five patterns provide the antifalse effect of a variety of interactions in the collective effect of the first to the 5th pattern, in addition, each magnetic
Property coding 4 the cross sectional shape being parallel on bearing bed direction include at least along the inclined bevel edge 5 of orientation, the bevel edge 5
Tilt angle be in 20-80 degree, with bevel edge 5 magnetic code be different from existing symmetrical magnetic code, pass through control magnetic
Property coding bevel edge and the tilt angle of bevel edge make detection waveform that there is unique antifalsification, and then significantly improve anti-fake member
The antifalsification of part, the second pattern and third pattern on the first tooth 6 have correspondence, metalization layer, dielectric layer, transparent painting
Layer, ink indicia layer and liquid crystal aligning layer 11 interaction improve optical anti-counterfeiting effect, when inclined to pre-color into
The line displacement and difference of the second pattern and third pattern color is obvious, improves recognition effect, second tooth 15, sub-wave length grating
Embossment structure 11 and reflecting layer 12 with Fabry-Perot cavity form interference and diffraction joint effect, three's phase interaction
It can be further improved antifalse effect under；The cone microlens array 14 of concave-convex micro-structure 13 described in register further increases
Antifalse effect, therefore, Security element of the invention in a variety of anti-counterfeiting technology collective effects, be not easy imitated and antifalse effect
It is good.
In Security element preferred embodiment of the invention, the bearing bed 1 is by polyvinyl chloride, polycarbonate or poly- methyl-prop
E pioic acid methyl ester constitute with a thickness of 10 to 15 microns of flexible transparent layer.In the present invention, it has been investigated that, 10 to 15 microns
The optical effect that flexible transparent layer carries first pattern, the second pattern, third pattern, the 4th pattern and the 5th pattern is aobvious
It writes, bearing bed 1 is also likely to be plastic basic unit or the base that is made of one or more plastics and/or paper layer.Base can have
Such as one or more following elements as other Security elements: watermark, anti-counterfeiting line, has one or more rise at anti-counterfeit stamping
To the patch of for example holographic or diffractive optical structure effect anti-counterfeiting characteristic.
In Security element preferred embodiment of the invention, the magnetic optically ink layer 2 contains the first magnetic particle and the
Two magnetic particles, wherein the coercivity of the first magnetic particle is greater than the coercivity of the second magnetic particle, and the first magnetic particle remains
Magnetic value is substantially equal to the residual induction of the second magnetic particle, and the proportion of the first magnetic particle and the second magnetic particle is 5:2, this makes
The present invention has higher detection dimensions and detection waveform effect is more obvious, and recognition effect significantly improves.
In one embodiment, magnetic optically ink layer refers to any oil that can be applied in printing technology on substrate
Ink, paint or other coatings, and it can carry out coining in softness to form embossment structure, and can be solidified by radiation
To the embossment structure of fixed coining.Curing process will not occur before curable ink is stamped, but curing process may
Can after stamping or substantially with imprint step while occur.Curable ink can preferably be solidified by ultraviolet radioactive.
Alternatively, curable ink can be by the radiation curing of other forms, such as electron beam or X-ray.Curable ink is preferably
The transparent or semitransparent ink formed by transparent resin material.Such transparent or semitransparent ink is particularly suitable for printing lens
Structure.In a kind of particularly preferred embodiment, the UV that transparent or semitransparent ink preferably includes acrylic is curable
Bright imprintable paint or coating.Curable ink used in the present invention and paint particularly suitable for imprint micro-structure, ink preferably by
It imprints and is almost solidified simultaneously by ultraviolet radioactive.In particularly preferred embodiments, radiation-curable ink is to take a picture
Gravure printing technique almost applies simultaneously and coining.Preferably, in order to which the viscosity for being suitable for photogravure, curable ink exists
80 to about 120 centipoises, viscosity can be determined by measuring from the time for looking into grace cup the paint that drains off.For certain polymeric substrates,
It needs to apply the adherency of stamping structure that middle layer is formed so as to improve ink to substrate to substrate before applying curable ink
Property.
Fig. 2 is the structural schematic diagram of the magnetic code cross sectional shape of Security element according to an embodiment of the invention,
Security element preferred embodiment of the invention, each magnetic code 4 are in the cross sectional shape being parallel on bearing bed direction
The combination of several triangles and several squares, the tilt angle of the bevel edge 5 is respectively 30 degree, 45 degree and 60 degree.It is logical
The tilt angle of the bevel edge and bevel edge of crossing control magnetic code makes detection waveform have unique antifalsification.
In Security element preferred embodiment of the invention, the range of first tilt angle is 30-60 degree, described second
Tilt angle and the first tilt angle on the contrary, second tooth 15, sub-wave length grating embossment structure 11 and have Fabry-Perot
The reflecting layer 12 of resonant cavity forms interference and diffraction joint effect.In one embodiment, in order to improve safety element color
More bright-coloured colorful color is presented in saturation degree, on sub-wave length grating embossment structure 11 deposit high refractive index/low-refraction/
High refractive index/low-refraction multilayer reflective layers 12, reflecting layer 12 are deposition of reflective type and interference-type reflecting layer, the reflecting layer
It is formed by aluminium, magnesium fluoride and aluminium.Reflecting layer 12 has Fabry-Perot cavity filter structure, has selection to incident white light
Effect, emergent ray only includes the light of certain wave bands, forms specific color；But when incident angle variation, in contrast
The light path answered changes, and interference wave band changes, and causes the color presented also to change therewith, so that optically variable effect be presented.
When reflecting layer 12 is combined with sub-wave length grating embossment structure 11, interference and diffraction collective effect, its available all band are this
Effect is related to the incident angle of light, equally obtains a kind of optically variable effect, obtains two kinds of light by the way that light structure changes are once deposited
Become effect.After suitably selecting eigenperiod and 12 parameter of reflecting layer of sub-wave length grating embossment structure 11, it may be implemented homochromy
Asynchronous phenomenon, i.e., under a viewing angle, sub-wave length grating embossment structure 11 and no 11 region of sub-wave length grating embossment structure
Reflection/transmission spectrum it is different but color is same or similar；When viewing angle changes, the two optically variable effect is different, respectively
From undergoing different light to become process, create a difference.It is mutual in the second tooth, sub-wave length grating embossment structure 11 and 12 three of reflecting layer
Under effect, antifalse effect can be further improved.
In Security element preferred embodiment of the invention, the metalization layer 7 is the copper alloy layer and thickness of vapor plating
It is 20 nanometers -40 nanometers, the dielectric layer 8 is the ZnSe layer of vapor deposition and with a thickness of 30 nanometers -60 nanometers, clear coat
9 for polymer coating and with a thickness of 50-80 nanometers, and ink indicia layer 10 is UV solidified oil layer of ink and thickness is less than the transparent painting
The thickness of layer 9, liquid crystal aligning layer 11 include offset it is red with a thickness of 30-50 nanometer of the first nematic crystal oriented layer and inclined
Move blue with a thickness of 30-50 nanometers of the second nematic crystal oriented layer.In one embodiment, the metal face of metalization layer 7
Material particle preferably includes below group: aluminium, gold, silver, platinum, copper, metal alloy, stainless steel, nichrome and brass.Metal ink
It is preferred that having low bonding agent content and high pigment to bonding agent ratio.Pigment is sufficiently high to the ratio of bonding agent to allow pigment
Particle is directed at the contour of diffraction grating.Suitable bonding agent may include any one or more selected from following group: nitre
Cellulose, ethyl cellulose, cellulose acetate, cellulose-acetate propionate, cellulose acetate-butyrate, alcohol-soluble propionic ester
(ASP), vinyl chloride, vinyl acetate copolymer, vinylacetate, vinylacrylic acid, polyurethane, polyamide, rosin, hydrocarbon,
Aldehyde, ketone, carbamate, polyethylene terephthalate, terpene phenol, polyolefin, silicone resin, cellulose, polyamide and pine
Face cream resin.In a kind of particularly preferred metal ink, bonding agent includes nitrocellulose and polyurethane.In one embodiment
In, metal ink include the metal pigment particle that average diameter is 10 μm to 12 μm, cellulose acetate-butyrate, carbamate and
Colorant, the metal pigment particle account for the weight ratio of metal ink in the range of 3% to 4%.Such metal ink mentions
High optical effect of the invention.In one embodiment, the thickness of granules of pigments is fallen in the range of 5-10nm substantially.
In Security element preferred embodiment of the invention, the magnetic optically ink layer 2 is greater than the first magnetic by coercivity
Property particle coercitive first magnetic field, then coercitive second magnetic field by coercivity less than the second magnetic particle, the
The magnetic direction in the magnetic direction in two magnetic fields and the first magnetic field is on the contrary, finally pass through UV solidification equipment.
In Security element preferred embodiment of the invention, all magnetic codes 4 form the first pattern, and all the
One tooth 6 forms the second pattern, and all ink indicia layers 10 form the third pattern for corresponding to the second pattern, the second all teeth
15 form the 4th pattern, and all concave-convex micro-structures 13 form the 5th pattern.
In one embodiment, microlens layer 3 includes that those reflect the micro- of light at the appropriately curved surface of homogeneous material
Mirror, such as plano-convex lenslet, biconvex lenslet, plano-concave lenslet and biconcave lenslet.Microlens shape may include based on dome,
Hemispherical, hexagon, square, cone, step structure, cube or these combined geometry.The present invention is ground
Study carefully discovery, the optical anti-counterfeiting effect in the case where register diameter is 20 μm to 30 μm of cone lenticule of concave-convex micro-structure 13 is the most aobvious
It writes.
In one embodiment, the chamfered shape of the concave-convex micro-structure and/or Valley Depth improve reflection of the invention
Effect.Micro-structure of the invention refers to that the structure has at least one distinctive geometric size, such as length, spacing, width
" length " of degree, height, radius of curvature etc., the structure is in micron range, particularly preferably between 0.6-0.7 microns
In range.In one embodiment, the color impression of the concave-convex micro-structure or color effects are visible in direct reflection,
It is the angle of incident light is the angle of direct light i.e. under the conditions of mirror-reflection.Preferably, by the concave-convex micro-structure
The corresponding selection of Valley Depth and chamfered shape also generates if incidence angle and the angle of emergence become 25 ° from such as 15 ° simultaneously
Clearly recognizable color change.
In one embodiment, under 45 ° of viewing angle, concave-convex micro-structure 13 is 600nm period, 280nm grating depth
Asymmetric crossed grating to the TM- polarization component of reflected light TE- polarization component and reflected light.When observing TE- polarization component,
Occur being essentially the first color impression.If polarizer turns over 90 °, the TM component of the second color of display is seen.Averaged spectrum
TE and TM be counted as it is unpolarized, when do not have to polarizer observation when, in the planes rotate in the case where, i.e., it is unrelated with azimuth, it is recessed
The color impression of convex micro-structure is usually closely similar or even almost the same.When decomposing by polarizer, it is not necessarily this
Kind situation, also may be implemented following design: when not having to polarizer observation, having Monochrome surface, but ought use on the other hand
When polarizer is observed, it is shown that other information entry.
In one embodiment, the chamfered shape of concave-convex micro-structure 13 and/or Valley Depth make the structure first
Having in spectral region lower than 10% reflectivity and in the second spectral region has relative in first spectral region
Reflectivity at least 5 times of high reflectivity.In one embodiment, for the surface normal of upper surface, the color of concave-convex micro-structure
Impression or color effects are visible in direct reflection, i.e., be the angle of incident light are direct lights under the conditions of mirror-reflection
Angle.Preferably, by the corresponding selection of Valley Depth and chamfered shape to concave-convex micro-structure, if incidence angle and outgoing
Angle becomes 25 ° from such as 15 ° simultaneously, then also generates clearly recognizable color change.This color change is also easy to by non-special
Industry personnel confirm and are especially susceptible to identify in diffraction light.Sometimes variation from one color to another color occurs, has
Shi Fasheng is from the specific dark color with high colour saturation (to the variation of the light color specifically with low color saturation.Further
The chamfered shape of concaveconvex structure is selected, so that the edge of reflectance spectrum is stronger, especially in the wave-length coverage of 100nm
With more than 10%, preferably greater than 15% reflectivity changes.In another embodiment, the depth of concave-convex micro-structure 11 is in
Having width between 0.6-0.7 microns be at least first area of 100nm, has the reflectivity for being lower than 10%, and have
Width is the second area of 10nm to 200nm, at least 3 times of high reflectivity in first area.When from unilateral observation,
Concaveconvex structure is rearranged by the narrow peak with broad valley, and when from the other side, this concaveconvex structure is by with narrow depth
The broad peak of paddy forms.
In one embodiment, dentation diffraction structure can form the image of multiple predetermined directions, and described image can be
Scheduled text, figure, label, symbol or number.
Fig. 3 is the step schematic diagram of the manufacture Security element method of one embodiment of the present of invention, and the embodiment of the present invention will
It is specifically described in conjunction with Fig. 3.
A kind of method and step of Security element described in manufacture includes:
First step provides the bearing bed with upper and lower surfaces；
Second step prints magnetic code 4 according to predetermined order arrangement and between each other the first gap of interval and forms magnetism
Photochromatic printing ink layer 2, the magnetic optically ink layer 2 are greater than coercitive first magnetic field of the first magnetic particle by coercivity,
Then coercitive second magnetic field by coercivity less than the second magnetic particle, the magnetic direction in the second magnetic field and the first magnetic field
Magnetic direction on the contrary, finally by UV solidification equipment solidify；
Third step, intaglio printing curable ink and radiation curing form the concave-convex micro- of optically-variable in the first gap
The depth of structure 13, concave-convex micro-structure 13 is between 0.6-0.7 microns；
Four steps forms dentation diffraction structure, institute perpendicular to coining on bearing bed direction in each magnetic code 4
Stating dentation diffraction structure includes multiple first teeth 6 with the first tilt angle and multiple second teeth with the second tilt angle
15, depositing metallization 7 on the inclined surface of the first tooth 6, dielectric layer 8 is vapor-deposited in the metalization layer 7, transparent painting
Arranged for interval is on the dielectric layer 8 with gap according to second for layer 9, and 10 sets of ink indicia layer are imprinted on the second gap, and liquid crystal takes
It is covered on the clear coat 9 and ink indicia layer 10 to layer 11,
5th step partly solidifies sub-wave length grating embossment structure 11, the sub-wave length grating embossment on the second tooth
Structural cycle is 280nm to 320nm and has the period direction opposite with the dentation diffraction structure, and the sub-wave length grating is floating
Carve the reflecting layer 12 that coating in structure 16 has Fabry-Perot cavity；
6th step, register arranges microlens layer 3 at the position in the first gap of correspondence of 1 lower surface of bearing bed,
Microlens layer 2 includes the cone microlens array 14 of concave-convex micro-structure 13 described in register, the cone microlens array 14
Cone lenslet diameter be 20 μm to 30 μm.
Manufacture Security element method of the invention is formed by magnetization, UV solidification, intaglio printing, chromatography, vapor deposition etc.
First to the 5th pattern, improves the craftsmanship of Security element, further increases so that copying difficulty, antifalsification further mentions
It rises.
Another aspect of the present invention provides a kind of for anti-fake security document comprising the Security element.Peace
Unanimous vote card can be such as banknote, check, visa, passport, identification card, be provided with Security element, it is preferable that security document
It is banknote, polymer banknote, mixed paper/polymer banknote, identity ticket, passport, identification card, check, visa, certificate or postal
Ticket.
Security document of the invention can be combined with other anti-counterfeiting technologies such as watermark etc. carry out it is anti-fake, this is this field
Common, therefore repeat no more.
Although embodiment of the present invention is described in conjunction with attached drawing above, the invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art are under the enlightenment of this specification and in the range for not departing from the claims in the present invention and being protected
In the case where, a variety of forms can also be made, these belong to the column of protection of the invention.
Claims (10)
1. a kind of Security element, the Security element includes bearing bed (1), magnetic optically ink layer (2) and microlens layer (3),
The bearing bed (1) being made of polymer material includes upper and lower surfaces, and the magnetic optically ink layer (2) is located at institute
State bearing bed (1) upper surface, it is characterised in that: the magnetic optically ink layer (2) include according to predetermined order arrangement and mutually
Between be spaced the magnetic code (4) in the first gap, each magnetic code (4) is in the section shape being parallel on bearing bed direction
Shape is included at least along the inclined bevel edge of orientation (5), and the tilt angle of the bevel edge (5) is in 20-80 degree, each magnetic
Property coding (4) perpendicular on bearing bed direction coining forming dentation diffraction structure, the dentation diffraction structure includes multiple tools
There are the first tooth (6) and multiple second teeth (15) with the second tilt angle of the first tilt angle, the nauropemeter of the first tooth (6)
Depositing metallization (7) on face, dielectric layer (8) are vapor-deposited on the metalization layer (7), and clear coat (9) is according to the
Two for arranged for interval on the dielectric layer (8), ink indicia layer (10) is arranged in the second gap, liquid crystal aligning layer with gap
(11) it is covered on the clear coat (9) and ink indicia layer (10), second tooth (15) is floating equipped with sub-wave length grating
It carves structure (16), the sub-wave length grating embossment structure period is 280nm to 320nm and has and the dentation diffraction structure phase
Anti- period direction, coating has the reflecting layer of Fabry-Perot cavity on the sub-wave length grating embossment structure (16)
(12), the concave-convex micro-structure (13) of optically-variable is equipped in first gap, the depth of concave-convex micro-structure (13) is in 0.6-
Between 0.7 micron, microlens layer (3) is located at the position in first gap of correspondence of the bearing bed (1) lower surface, microlens layer
(3) include concave-convex micro-structure described in register (13) cone microlens array (14), the cone microlens array (14)
Cone lenslet diameter be 20 μm to 30 μm.
2. Security element according to claim 1, it is characterised in that: the bearing bed (1) is by polyvinyl chloride, polycarbonate
Or polymethyl methacrylate constitute with a thickness of 10 to 15 microns of flexible transparent layer.
3. Security element according to claim 1, it is characterised in that: the magnetic optically ink layer (2) contains the first magnetic
Property particle and the second magnetic particle, wherein the coercivity of the first magnetic particle is greater than the coercivity of the second magnetic particle, the first magnetic
Property particle residual induction be equal to the residual induction of the second magnetic particle, the proportion of the first magnetic particle and the second magnetic particle is 5:2.
4. Security element according to claim 1, it is characterised in that: each magnetic code (4) is being parallel to carrying
Cross sectional shape on layer direction is the combination of several triangles and several squares, the tilt angle point of the bevel edge (5)
It Wei not be 30 degree, 45 degree and 60 degree.
5. Security element according to claim 1, it is characterised in that: the range of first tilt angle is 30-60 degree,
Second tilt angle and the first tilt angle are on the contrary, second tooth (15), sub-wave length grating embossment structure (16) and tool
There is the reflecting layer (12) of Fabry-Perot cavity to form interference and diffraction joint effect.
6. Security element according to claim 1, it is characterised in that: the metalization layer (7) is that the copper of vapor plating closes
Layer gold and with a thickness of 20 nanometers -40 nanometers, the dielectric layer (8) are the ZnSe layer of vapor deposition and with a thickness of 30 nanometer -60
Nanometer, clear coat (9) are polymer coating and with a thickness of 50-80 nanometer, ink indicia layer (10) for UV solidified oil layer of ink and
Thickness is less than the thickness of the clear coat (9), liquid crystal aligning layer (11) include offset it is red with a thickness of 30-50 nanometers the
One nematic crystal oriented layer and offset blue with a thickness of 30-50 nanometers of the second nematic crystal oriented layer.
7. Security element according to claim 3, it is characterised in that: the magnetic optically ink layer (2) passes through coercivity
Greater than coercitive first magnetic field of the first magnetic particle, then by coercivity less than coercitive the of the second magnetic particle
The magnetic direction in two magnetic fields, the magnetic direction in the second magnetic field and the first magnetic field is on the contrary, finally pass through UV solidification equipment.
8. Security element according to claim 1, it is characterised in that: all magnetic codes (4) form the first figure
Case, all the first teeth (6) form the second pattern, and all ink indicia layers (10) form the third figure for corresponding to the second pattern
Case, all the second teeth (15) form the 4th pattern, and all concave-convex micro-structures (13) form the 5th pattern.
9. a kind of method for manufacturing Security element according to claim 1 to 8, step include: first step
(S1), the bearing bed with upper and lower surfaces is provided；Second step (S2), according to predetermined order arrangement and mutually it
Between be spaced the first gap printing magnetic code (4) and form magnetic optically ink layer (2), the magnetic optically ink layer (2) is passed through
Coercivity is greater than coercitive first magnetic field of the first magnetic particle, then the coercive by coercivity less than the second magnetic particle
The magnetic direction in the second magnetic field of power, the magnetic direction in the second magnetic field and the first magnetic field is on the contrary, finally solid by UV solidification equipment
Change；Third step (S3), intaglio printing curable ink and radiation curing form the concave-convex micro- of optically-variable in the first gap
The depth of structure (13), concave-convex micro-structure (13) is between 0.6-0.7 microns；Four steps (S4), in each magnetism
Coding (4) forms dentation diffraction structure perpendicular to coining on bearing bed direction, and the dentation diffraction structure includes multiple having the
The first tooth (6) of one tilt angle and multiple second teeth (15) with the second tilt angle, on the inclined surface of the first tooth (6)
Depositing metallization (7), dielectric layer (8) are vapor-deposited on the metalization layer (7), and clear coat (9) is according between second
Unoccupied place arranged for interval is on the dielectric layer (8), and ink indicia layer (10) set is imprinted on the second gap, and liquid crystal aligning layer (11) covers
It covers on the clear coat (9) and ink indicia layer (10), the 5th step (S5) partly solidifies sub-wavelength on the second tooth
Grating relief structure (16), the sub-wave length grating embossment structure period are 280nm to 320nm and have and the dentation diffraction
The opposite period direction of structure, coating has the anti-of Fabry-Perot cavity on the sub-wave length grating embossment structure (16)
Penetrate layer (12)；6th step (S6), register arrangement is micro- at the position in first gap of correspondence of the bearing bed (1) lower surface
Mirror layer (3), microlens layer (3) include the cone microlens array (14) of concave-convex micro-structure described in register (13), the circular cone
The cone lenslet diameter of body microlens array (14) is 20 μm to 30 μm.
10. a kind of for anti-fake security document comprising Security element of any of claims 1-8.
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| CN201810061827.1A CN108239893B (en) | 2018-01-23 | 2018-01-23 | Security element and its manufacturing method and security document |
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| CN201810061827.1A CN108239893B (en) | 2018-01-23 | 2018-01-23 | Security element and its manufacturing method and security document |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110738065B (en) * | 2018-07-18 | 2023-09-19 | ***通信集团设计院有限公司 | Anti-counterfeiting system and method |
| CN111791629B (en) * | 2018-07-20 | 2021-09-03 | 安徽诺乐知识产权服务有限公司 | Security element and security document |
| JP6783829B2 (en) * | 2018-08-09 | 2020-11-11 | キヤノン株式会社 | Diffractive optical element and optical equipment using it |
| CN109324418A (en) * | 2018-10-30 | 2019-02-12 | 深圳市深大极光科技有限公司 | Anti-counterfeit structure, holographic thermoprinted anti false film and preparation method thereof |
| CN112329902B (en) * | 2020-11-02 | 2024-02-13 | 中钞特种防伪科技有限公司 | Magnetic anti-counterfeiting element and magnetic anti-counterfeiting product |
| CN113947173B (en) * | 2021-09-08 | 2023-09-15 | 中钞特种防伪科技有限公司 | Magneto-optical anti-counterfeiting element and anti-counterfeiting product using same |
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| EP2027562B1 (en) * | 2006-05-16 | 2016-04-06 | Hologram Industries Research GmbH | Method for production of documents with a hologram and a document with a hologram |
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