CN111070938B - Certificate card with holographic anti-counterfeiting mark and manufacturing method thereof - Google Patents

Certificate card with holographic anti-counterfeiting mark and manufacturing method thereof Download PDF

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Publication number
CN111070938B
CN111070938B CN201911328420.1A CN201911328420A CN111070938B CN 111070938 B CN111070938 B CN 111070938B CN 201911328420 A CN201911328420 A CN 201911328420A CN 111070938 B CN111070938 B CN 111070938B
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China
Prior art keywords
holographic
area
grating
micro
card
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Chinese (zh)
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CN111070938A (en
Inventor
虞力英
王军华
顾席光
江帆
徐永森
孙小铁
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Traffic Management Research Institute of Ministry of Public Security
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Traffic Management Research Institute of Ministry of Public Security
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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
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • 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
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/46—Associating two or more layers using pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The invention provides a certificate card provided with a holographic anti-counterfeiting mark, which can present a clearer anti-counterfeiting image, so that a user can quickly identify the anti-counterfeiting image, and the anti-holographic anti-counterfeiting image can cover the whole edition areas on the front side and the back side of the certificate card, thereby improving the use effect of the anti-counterfeiting certificate card. The anti-fake device comprises a bearing substrate, a holographic structure supporting layer arranged on the bearing substrate, a holographic micro-nano structure forming an anti-fake image area, a protective layer arranged on the holographic micro-nano structure, a tough structure which is formed by polycarbonate materials and is not easy to deform, and a holographic structure supporting layer made of polycarbonate-philic materials arranged on the bearing substrate; the maximum area of the anti-fake image area is equal to the area of the front surface or the back surface of the anti-fake card; and filling a transparent dielectric coating layer formed by oxide with refractive index larger than 1.8 on the structural surface where the holographic micro-nano structure is positioned under the protective layer. Also discloses a method for manufacturing the holographic anti-fake card.

Description

Certificate card with holographic anti-counterfeiting mark and manufacturing method thereof
Technical Field
The invention relates to the technical field of card certificate anti-counterfeiting, in particular to a card with a holographic anti-counterfeiting mark and a manufacturing method thereof.
Background
The existing anti-counterfeiting certificates, such as identity cards and drivers' licenses, are provided with holographic anti-counterfeiting structures in local areas of the identity cards to form anti-counterfeiting images, so that users can observe the anti-counterfeiting images through naked eyes, and further the authenticity of the certificates is identified through the anti-counterfeiting images. In the prior art, different holographic anti-counterfeiting images are realized on the surface of an anti-counterfeiting card through micro-nano optical technologies such as various grating structures, 3D color lens technologies and the like, but the holographic patterns on the existing anti-counterfeiting card are easy to cause insufficient brightness due to the micro-nano structures and materials, and particularly in an outdoor environment, when a user confirms the holographic anti-counterfeiting image, the holographic effect is not obvious and the user experience is poor; meanwhile, in order to realize the color effect of the azimuth pattern, a technician uses zinc sulfide as a medium coating layer of the holographic anti-counterfeiting structure, however, the zinc sulfide cannot be fused with an adjacent structural layer in molecular structure level, the bonding force between card layers cannot be ensured, and only the medium coating layer and the adjacent structural layer can be bonded in an adhesive mode; therefore, the anti-counterfeiting image in the prior art cannot cover the front side and the back side of the card entirely, the size of the anti-counterfeiting image is limited, and the anti-counterfeiting image can only be made into a small-size local anti-counterfeiting image.
Disclosure of Invention
In order to solve the problems that the prior anti-fake image is poor in user experience and the holographic anti-fake image is limited in size due to insufficient brightness, the invention provides the certificate card provided with the holographic anti-fake mark, which can present a clearer anti-fake image, so that a user can quickly identify the anti-fake image, and the anti-holographic pseudo image can cover the whole edition areas on the front side and the back side of the certificate card, thereby improving the use effect of the anti-fake certificate card. Also discloses a method for manufacturing the holographic anti-fake card.
The technical scheme of the invention is as follows: the utility model provides a set up holographic anti-fake label's card, its includes bears the substrate, sets up holographic structure supporting layer on the substrate bear the weight of the holographic micro-nano structure that the suppression constitutes anti-fake image region on the holographic structure supporting layer, set up the protective layer on the holographic micro-nano structure, its characterized in that:
the bearing substrate is a tough structure which is made of polycarbonate material and is not easy to deform, and a holographic structure supporting layer made of polycarbonate-philic material is arranged on the bearing substrate; the maximum area of the anti-counterfeiting image area is equal to the area of the front surface or the back surface of the anti-counterfeiting card; and filling a dielectric coating layer which is formed by transparent oxide with the refractive index being more than 1.8 on the structural surface where the holographic micro-nano structure is positioned under the protective layer.
It is further characterized by:
the oxide in the dielectric coating layer is selected as follows: titanium dioxide, or niobium pentoxide, or zirconium dioxide;
the holographic structure supporting layer is formed by solidifying a high molecular compound coating containing carbonate chain links;
a coupling layer formed by curing a coupling agent consisting of modified siloxane and modified acrylic ester is arranged between the dielectric coating layer and the protective layer;
the anti-counterfeiting image area comprises a bicolor directional photochromic area made of two-channel gratings, the directions of the two gratings in the two-channel gratings are mutually perpendicular, the grating period is 300-450 nanometers, the line width is 175 nanometers, and the slot-shaped depth is 100-160 nanometers; the holographic micro-nano structure is irradiated by white light, when the incident light is vertical to the sub-wavelength grating in the first channel region, the graph of the region is green, and the graph of the second channel region, which is orthogonal to the micro-nano structure, is blue;
the security image area further comprises: one or more of a variable-frequency 3D color lens area, a dynamic co-located magnifier area, a micro image-text pixel technical area, a nanometer gradual change rainbow area, a multicolor diffraction grating area, a diffraction dynamic effect area and an ultra-precise micro text area are combined together;
the variable-frequency 3D color lens area is composed of diffraction pixels arranged according to position coordinates, and the diffraction pixels are filled with pixel gratings with space frequency and orientation angle continuously changed according to a lens surface type rule, so that the visual effect of the 3D color lens is formed;
the dynamic co-located magnifier region is formed by superposing additional diffraction pixels on the basis of a 3D color lens of the variable-frequency 3D color lens region, wherein the diffraction pixels are filled with pixel gratings with spatial frequency and orientation angle which are changed according to multiple layers of images and texts, the spatial frequency of the pixel gratings of each layer of the multiple layers of images and texts is the same, and the orientation angles are different, so that the dynamic effect of continuous spherical surface change of the images and texts is realized; the space frequency according to the multi-layer image-text change is 1400 lines/millimeter, and the orientation angle change range is-20 degrees to 20 degrees;
the micro image-text pixel technical area consists of a plurality of pixel points, wherein the pixel points consist of a group of gratings with continuously changed orientation angles or changed spatial frequencies and micro characters and/or patterns formed on the gratings, and the pixel points form different characters or images to form dynamic diffraction effects of images and texts;
the nanometer gradual change rainbow area consists of grating structures with the same orientation angle and continuously changed spatial frequency, realizes continuous color change and has a rainbow gradual change effect visually; the space frequency variation range is 2000-2700 lines/mm, and the orientation angle of the grating is 0 degree;
the multi-color diffraction grating area consists of diffraction grating structures with the same orientation angle and different spatial frequencies, the spatial frequencies of the grating structures are discontinuously changed, and the visual effect of multiple colors is displayed; the space frequency of the grating in the area is discontinuously changed, and the space frequency of the grating is in the range of 1000-1800 lines/millimeter;
the diffraction dynamic effect area is formed by a plurality of basic units, and the basic units are formed by arranging unit pixel gratings with different orientations and same spatial frequency into a plurality of squares, so that the image-text dynamic running effect is formed; the space frequency of the grating in the area is 1200 lines/millimeter, and the orientation angle range of the grating is 0-180 degrees;
the ultra-precise miniature text region is composed of a plurality of pixel points, the pixel points are composed of a group of gratings with continuously changed orientation angles, and the pixel points form different texts or images to form a dynamic diffraction effect of the graphics context.
A method for manufacturing a certificate card with a holographic anti-counterfeiting mark comprises the following steps:
s1: setting a bearing substrate;
it also comprises the following steps:
s2: setting a high molecular compound coating containing carbonate chain links on the bearing substrate, and forming a holographic structure supporting layer after curing;
s3: stamping all the holographic micro-nano structures on the holographic structure supporting layer in a pressing mode;
s4: and filling transparent oxide with refractive index larger than 1.8 on the structural surface where the holographic micro-nano structure is positioned at one time to form a dielectric coating layer formed by an oxide film.
It is further characterized by:
it also comprises the following steps:
s5: the surface of the medium coating layer is coated with a coupling agent, and the coupling agent is solidified to form a coupling layer;
s6: and coating a high molecular compound coating containing carbonate chain links on the coupling layer and curing to form a protective layer.
According to the identification card provided with the holographic anti-counterfeiting mark and the manufacturing method thereof, the bearing substrate is of a polycarbonate material structure, the holographic structure supporting layer is of a polycarbonate material, the holographic structure supporting layer which is compatible with the bearing substrate material is arranged, the dielectric coating layer formed by the oxide film is arranged on the holographic structure supporting layer, the dielectric coating layer can be combined with the structural layers on two sides through molecular reaction, the binding force is very good, the possibility of interlayer separation in the using process of the identification card is reduced, and the size of the holographic anti-counterfeiting image is not limited by the size of the dielectric coating layer; meanwhile, the medium coating layer is filled once during the manufacturing process, and the whole coating film is manufactured once, so that the size of the anti-counterfeiting image area in the technical scheme of the invention can be distributed over the part or the whole surface of the front side and the back side of the anti-counterfeiting card, and the limitation of the size of the medium coating layer is further avoided; meanwhile, the oxide film with the refractive index larger than 1.8 has the advantages that the diffraction efficiency of the micro-nano structure is improved, the optical color change and the diffraction effect are more obvious due to the crystal structure pair, and the holographic brightness and the color brightness are increased; the coupling layer is arranged between the medium coating layer and the protective layer, so that the combination between the medium coating layer and the protective layer is firmer, the service life of the card is prolonged, and the medium coating layer is further ensured to be capable of brightening the anti-counterfeiting image in a full area.
Drawings
FIG. 1 is an overall schematic diagram of a transparent holographic scheme of an inventive identification card;
FIG. 2 is a schematic diagram of the structural layers of the anti-counterfeit card of the present invention;
FIG. 3 is a schematic diagram of a micro-nano structure of a bicolor directional photochromic region
FIG. 4 is an image effect of a bi-color directional photochromic region at a particular angle and rotated 90 degrees;
FIG. 5 is a schematic diagram of a grating structure of a variable frequency 3D color lens region with a spatial frequency continuously varying according to a lens surface type rule;
FIG. 6 is a graph showing the effect of the dynamic co-located magnifier region at different angles;
FIG. 7 is a diagram of the micro image and text pixel technical area and the effect of the two amplification of the light points of the image under a microscope;
FIG. 8 is a diagram of the grating structure of a nano-graded rainbow region and the effect of the nano-graded rainbow region;
FIG. 9 is an effect diagram of a polychromatic diffraction grating region;
FIG. 10 is a grating structure diagram of a diffraction dynamic effect region and an effect diagram of the diffraction dynamic effect region;
fig. 11 is an enlarged view of the ultra-precise micro text region and the partial region of the figure.
Detailed Description
As shown in fig. 1 of the drawings in the specification, an anti-counterfeiting image area on an anti-counterfeiting card, which is made of a holographic micro-nano structure, comprises: the device comprises a bicolor directional photochromic area 1, a variable-frequency 3D color lens area 2, a dynamic parity magnifier area 3, a micro image-text pixel technical area 4, a nanometer gradual change rainbow area 5, a multicolor diffraction grating area 6, a diffraction dynamic effect area 7 and an ultra-precise micro character area 8; as shown in fig. 1, it can be known that the anti-counterfeit image area spreads over the surface of the anti-counterfeit card, and the surface of the anti-counterfeit card has no blank area.
As shown in fig. 2, the card provided with the holographic anti-counterfeit mark includes a bearing substrate 11, a holographic structure supporting layer 12 arranged on the bearing substrate 11, a holographic micro-nano structure 13 forming an anti-counterfeit image area is pressed on the holographic structure supporting layer 12, the bearing substrate 11 is a tough structure which is not easy to deform and is made of polycarbonate material, the bearing substrate 11 is provided with the holographic structure supporting layer 12 made of polycarbonate-philic material, such as UV paint is formed by photo-curing or thermal curing; the maximum area of the anti-counterfeiting image area is equal to the area of the front surface or the back surface of the anti-counterfeiting card, and the area of the anti-counterfeiting card in the embodiment is 86 x 54mm; a medium coating layer 14 formed by transparent oxide films with refractive indexes larger than 1.8 is filled on the structural surface where the holographic micro-nano structure 13 is positioned; the oxide in the dielectric coating layer is selected as follows: crystals of metal oxides such as titanium dioxide, niobium pentoxide, or zirconium dioxide; a coupling layer 15 formed by curing a coupling agent composed of modified siloxane and modified acrylic ester is arranged between the dielectric coating layer 14 and the protective layer 16.
The double-color directional photochromic area 1 is made of double-channel gratings, two of which are: the directions of the first double-channel grating structure 9 and the second double-channel grating structure 10 are mutually perpendicular, the grating period is 300-450 nanometers, the line width is 175 nanometers, and the slot-shaped depth is 100-160 nanometers; illuminating the holographic micro-nano structure with white light, wherein when the incident light is vertical to the sub-wavelength grating in the first channel region, the pattern of the region is green, and the pattern of the second channel region, which is orthogonal to the micro-nano structure, is blue; the holographic anti-counterfeiting film is constructed based on the interference effect of the multidimensional micro-nano grating structure, so that near ultraviolet light, visible light and near infrared light with spectrum wave bands of 380 nm-800 nm can be reflected in different directions, interference and reflection of a large number of light beams are involved, a colorful effect is presented, brightness of an anti-counterfeiting image is further improved, and users can more easily respectively anti-counterfeiting the image;
as shown in fig. 3, the grating has an orientation angle of 0 degrees for the first two-channel grating structure 9 and 90 degrees for the second two-channel grating structure 10; as shown in fig. 4, when the incident light is oriented perpendicular to the sub-wavelength grating in one of the channel regions, the pattern of that region appears green, and the pattern of the other channel region, with the micro-nano structure direction orthogonal thereto, appears blue; the certificate card is rotated around the center normal line by 90 degrees for observation, and the colors of the first double-channel area and the second double-channel area are exchanged; the color of the former channel region turns blue and the color of the latter channel region turns green.
A method for manufacturing a certificate card with a holographic anti-counterfeiting mark comprises the following steps:
s1: setting a bearing substrate;
s2: on top of the carrier substrate, a high molecular compound coating containing carbonate linkages such as: UV coating, forming a holographic structural support layer after photo-curing and/or thermal curing;
s3: stamping the holographic micro-nano structure on the holographic structure supporting layer in a pressing mode;
s4: and filling transparent oxide with refractive index larger than 1.8 on the structural surface where the holographic micro-nano structure is positioned at one time to form a dielectric coating layer formed by an oxide film.
S5: coating a coupling agent on the surface of the medium coating layer, and curing to form a coupling layer;
s6: the coupling layer is coated with a high molecular compound coating containing carbonate chain segments, such as: forming a protective layer after UV glue is cured by light and/or heat;
in the technical scheme of the invention, each structural layer is formed through a one-time process, and the whole process has simple working procedures and low cost. The medium coating layer is formed through a one-time lamination process, the combination between the medium coating layer and the holographic micro-nano structure and the holographic structure supporting layer is molecular reaction combination, the combination force is very good, the possibility of interlayer separation in the use process is greatly reduced, the holographic micro-nano structure is supported not to be limited by the size of the medium coating layer, the surface of the holographic structure supporting layer can be fully manufactured, namely, the anti-counterfeiting image in the technical scheme of the invention can be fully manufactured on the surface of the anti-counterfeiting card.
The identification method of the identification card provided with the holographic anti-counterfeiting mark is characterized by comprising the following steps of:
as shown in fig. 4, the anti-counterfeiting image area is irradiated by white light, the bicolor directional photochromic area 1 in the holographic micro-nano structure is observed in the specular reflection direction, when the incident light is perpendicular to the grating orientation of the first dual-channel grating structure, the first graph is green, and the second graph is blue; rotating the card by 90 degrees around the center normal line, and continuously irradiating with the white light, wherein the first pattern is blue, and the second pattern is green; if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The variable-frequency 3D color lens region 2 is composed of diffraction pixels arranged according to position coordinates, and the diffraction pixels are filled with pixel gratings with space frequency and orientation angle continuously changed according to a lens surface type rule, so that the visual effect of the 3D color lens is formed;
when the variable frequency 3D color lens area 2 is identified, the identification card is rotated, the variable frequency 3D color lens area 2 is observed, and the variable frequency 3D color lens area 2 presents a stereoscopic color lens effect; if the characteristics are met, the card is identified as true, otherwise, the card is identified as false;
the space frequency of the grating is inversely proportional to the period of the grating, the higher the space frequency of the grating is, the shorter the period of the grating is, and the denser the grating is; conversely, the lower the spatial frequency of the grating, the longer the period of the grating, and the more sparse the grating. The orientation angle of the grating is the included angle between the grating and the horizontal direction, namely the grating orientation angle in the horizontal direction is 0 degree; the space frequency range of continuous change is 300-2400 lines/mm according to the lens surface type rule, the lens surface type rule means that the grating space frequency from the center of a lens surface to the outer edge is higher and higher, the grating frequency at the center of the lens surface is relatively low, the grating is relatively sparse, the grating frequency at the outer edge of the lens surface is relatively high, the grating is relatively dense, and the change range of the grating orientation angle is 0-180 degrees; as shown in fig. 5 of the drawings, is a part of a pixel grating structure diagram of a spatial frequency and an orientation angle which continuously change according to a lens surface type rule.
On the basis of the 3D color lens of the variable-frequency 3D color lens area 2, additional diffraction pixels are superimposed, the diffraction pixels are filled with pixel gratings with spatial frequency and orientation angle which are changed according to the multi-layer graphics context, the spatial frequency of the pixel gratings of each layer of the multi-layer graphics context is the same, the orientation angle is different, the dynamic effect of continuous spherical change of the graphics context is realized, and the dynamic co-located magnifier area 3 is formed; the spatial frequency of the change of the multi-layer graphics is 1400 lines/millimeter, the change range of the orientation angle is-20 degrees to 20 degrees, and the micro-nano structure is similar to the variable frequency 3D color lens area 2; as shown in fig. 6, which is an effect diagram of four views of the dynamic parity-check magnifier region 3, it can be seen from the figure that the two words "chinese" are different in size and shape from different views, as if they were viewed with a magnifier;
when the image of the dynamic parity-check magnifying glass region 3 is identified, the card is rotated, the dynamic parity-check magnifying glass region is observed along the long axis direction by-90 degrees to 90 degrees, and the dynamic parity-check magnifying glass region presents the dynamic effect of image-text spherical surface magnification; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The micro image-text pixel technical area 4 consists of a plurality of pixel points, wherein the pixel points consist of a group of gratings with continuously changed orientation angles or changed spatial frequencies and micro characters/graphics formed on the gratings, and the pixel points form different characters or images to form dynamic diffraction effects of images and texts;
the anti-counterfeiting technology has extremely high precision requirements on photoetching equipment, as shown in fig. 7, a left image is a graph of a micro-image-text pixel technical area 4, an upper right image is an enlarged image of one light spot of the left image, one light spot comprises hundreds of thousands of pixel points, and a lower right image is an enlarged image of a single pixel point, and as can be seen from the image, letters 'CN' are inlaid in the single pixel point and represent China;
when the image of the micro image-text pixel technical area 4 is identified, observing the pixel points of the micro image-text pixel technical area by using a microscope, wherein the observed pixel points contain specific images and texts; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The nanometer gradual change rainbow region 5 consists of grating structures with the same orientation angle and continuously changed spatial frequency, realizes continuous color change and has a rainbow gradual change effect visually; the space frequency change range is 2000-2700 lines/mm, the orientation angle of the grating is 0 degrees, the grating structure and the image effect graph are shown in figure 8, the colors of the graphs at different angles are different, and the graph has the effect of rainbow gradual change along with the rotation of the card;
when the image of the nanometer gradual change rainbow area 5 is identified, the card is rotated, the nanometer gradual change rainbow area is observed, and the nanometer gradual change rainbow area presents rainbow color gradual change effect; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The polychromatic diffraction grating region 6 is composed of diffraction grating structures with basically the same orientation angle and different spatial frequencies, the spatial frequencies of the grating structures are discontinuously changed, and the visual effect of multiple colors is displayed; the spatial frequency of the grating in this region is discontinuously variable, and fixed points are selected between 1000-1800 lines/mm as the spatial frequency of the grating in this region, and the orientation angle is preferably about 0 degrees. Effect diagram as shown in fig. 9, the multicolor diffraction grating region 6 exhibits a visual effect of a plurality of colors;
when the image of the multicolor diffraction grating area 6 is identified, the card is rotated, and the observed multicolor diffraction grating area and the nanometer gradual change rainbow area show visual effects of various colors; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The diffraction dynamic effect area 7 is formed by a plurality of basic units, and the basic units are formed by arranging unit pixel gratings with different orientations and the same spatial frequency into a plurality of squares, so as to form the effect of dynamic running of graphics and texts; the grating space frequency of the area is 1200 lines/millimeter, the orientation angle range of the grating is 0-180 degrees, as shown in figure 10, the grating structure and the image effect diagram of the diffraction dynamic effect area are that when the card is rotated, the image-text dynamic running effect appears on the four square frames;
when the image of the diffraction dynamic effect area 7 is identified, the card is rotated, the diffraction dynamic effect area is observed, and the diffraction dynamic effect area presents the effect of dynamic running of images and texts; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The ultra-precise miniature text region 8 consists of a plurality of pixel points, wherein the pixel points consist of a group of gratings with continuously changed orientation angles, and the pixel points form different texts or images to form a dynamic diffraction effect of the graphics context; as shown in fig. 11, the lines of the ultra-precise miniature text region 8 are displayed as characters such as the text "the people's republic of China" after being enlarged;
when the image of the ultra-precise miniature character area 8 is identified, a magnifying glass is used for observing the ultra-precise miniature character area, and the ultra-precise miniature character area consists of specific characters; and if the characteristics are met, the card is considered to be true, otherwise, the card is considered to be false.
The anti-counterfeiting image area of the identification card can simultaneously support the eight anti-counterfeiting marks through the holographic range in the technical scheme of the invention, the eight anti-counterfeiting marks are finished simultaneously, the anti-counterfeiting pattern area extends over the surface of the identification card, and a blank area does not exist on the surface of the identification card; the anti-counterfeiting card manufactured based on the technical scheme of the invention has high manufacturing difficulty and high requirements on equipment, increases the imitation difficulty of the anti-counterfeiting label card, and effectively prevents the card from being tampered, imitated and maliciously copied; the image brightness is high, the holographic effect is obvious, the identification is easy, and the user can rapidly judge the authenticity of the card; the image of the anti-counterfeiting image area in the technical scheme of the invention has an image which is identified by naked eyes and an anti-counterfeiting image which is identified by a tool, and simultaneously has the effects of expert identification anti-counterfeiting and public anti-counterfeiting, and the anti-counterfeiting effect of the anti-counterfeiting card is better.

Claims (7)

1. The utility model provides a set up holographic anti-fake label's card, its includes bears the substrate, sets up holographic structure supporting layer on the substrate bear the weight of the holographic micro-nano structure that the suppression constitutes anti-fake image region on the holographic structure supporting layer, set up the protective layer on the holographic micro-nano structure, its characterized in that: the bearing substrate is a tough structure which is made of polycarbonate material and is not easy to deform, and a holographic structure supporting layer made of polycarbonate-philic material is arranged on the bearing substrate; the maximum area of the anti-counterfeiting image area is equal to the area of the front surface or the back surface of the anti-counterfeiting card; a medium coating layer which is formed by transparent oxide with refractive index larger than 1.8 is filled on the structural surface where the holographic micro-nano structure is positioned under the protective layer;
and a coupling layer formed by curing a coupling agent consisting of modified siloxane and modified acrylic ester is arranged between the dielectric coating layer and the protective layer.
2. The card with holographic anti-counterfeit mark as claimed in claim 1, wherein: the oxide in the dielectric coating layer is selected as follows: titanium dioxide, or niobium pentoxide, or zirconium dioxide.
3. The card with holographic anti-counterfeit mark as claimed in claim 1, wherein: the holographic structure supporting layer is formed by solidifying a high molecular compound coating containing carbonate chain links.
4. The card with holographic anti-counterfeit mark as claimed in claim 1, wherein: the anti-counterfeiting image area comprises a bicolor directional photochromic area made of two-channel gratings, the directions of the two gratings in the two-channel gratings are mutually perpendicular, the grating period is 300-450 nanometers, the line width is 175 nanometers, and the slot-shaped depth is 100-160 nanometers; and irradiating the holographic micro-nano structure with white light, wherein the pattern of the area is green when the incident light is vertical to the sub-wavelength grating in the first channel area, and the pattern of the second channel area, which is orthogonal to the micro-nano structure, is blue.
5. The identification card provided with the holographic anti-counterfeiting mark according to claim 4, wherein: the security image area further comprises: the variable-frequency 3D color lens region, the dynamic co-located magnifier region, the micro image-text pixel technical region, the nanometer gradual change rainbow region, the multicolor diffraction grating region, the diffraction dynamic effect region and the ultra-precise micro text region are combined together.
6. The identification card provided with the holographic anti-counterfeiting mark according to claim 5, wherein: the variable-frequency 3D color lens area is composed of diffraction pixels arranged according to position coordinates, and the diffraction pixels are filled with pixel gratings with space frequency and orientation angle continuously changed according to a lens surface type rule, so that the visual effect of the 3D color lens is formed;
the dynamic co-located magnifier region is formed by superposing additional diffraction pixels on the basis of a 3D color lens of the variable-frequency 3D color lens region, wherein the diffraction pixels are filled with pixel gratings with spatial frequency and orientation angle which are changed according to multiple layers of images and texts, the spatial frequency of the pixel gratings of each layer of the multiple layers of images and texts is the same, and the orientation angles are different, so that the dynamic effect of continuous spherical surface change of the images and texts is realized; the space frequency according to the multi-layer image-text change is 1400 lines/millimeter, and the orientation angle change range is-20 degrees to 20 degrees;
the micro image-text pixel technical area consists of a plurality of pixel points, wherein the pixel points consist of a group of gratings with continuously changed orientation angles or changed spatial frequencies and micro characters and/or patterns formed on the gratings, and the pixel points form different characters or images to form dynamic diffraction effects of images and texts;
the nanometer gradual change rainbow area consists of grating structures with the same orientation angle and continuously changed spatial frequency, realizes continuous color change and has a rainbow gradual change effect visually; the space frequency variation range is 2000-2700 lines/mm, and the orientation angle of the grating is 0 degree;
the multi-color diffraction grating area consists of diffraction grating structures with the same orientation angle and different spatial frequencies, the spatial frequencies of the grating structures are discontinuously changed, and the visual effect of multiple colors is displayed; the space frequency of the grating in the area is discontinuously changed, and the space frequency of the grating is in the range of 1000-1800 lines/millimeter;
the diffraction dynamic effect area is formed by a plurality of basic units, and the basic units are formed by arranging unit pixel gratings with different orientations and same spatial frequency into a plurality of squares, so that the image-text dynamic running effect is formed; the space frequency of the grating in the area is 1200 lines/millimeter, and the orientation angle range of the grating is 0-180 degrees;
the ultra-precise miniature text region is composed of a plurality of pixel points, the pixel points are composed of a group of gratings with continuously changed orientation angles, and the pixel points form different texts or images to form a dynamic diffraction effect of the graphics context.
7. The method for manufacturing the identification card provided with the holographic anti-counterfeiting mark according to any one of claims 1 to 6 comprises the following steps:
s1: setting a bearing substrate;
it also comprises the following steps:
s2: setting a high molecular compound coating containing carbonate chain links on the bearing substrate, and forming a holographic structure supporting layer after curing;
s3: stamping all the holographic micro-nano structures on the holographic structure supporting layer in a pressing mode;
s4: filling transparent oxide with refractive index larger than 1.8 on the structural surface where the holographic micro-nano structure is located at one time to form a dielectric coating layer formed by an oxide film;
the maximum area of the anti-fake image area is equal to the area of the front surface or the back surface of the anti-fake card;
it also comprises the following steps:
s5: the surface of the medium coating layer is coated with a coupling agent, and the coupling agent is solidified to form a coupling layer;
s6: and coating a high molecular compound coating containing carbonate chain links on the coupling layer and curing to form a protective layer.
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