CN203894781U - Magnetic anti-counterfeiting mark and identification system thereof - Google Patents
Magnetic anti-counterfeiting mark and identification system thereof Download PDFInfo
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- CN203894781U CN203894781U CN201420286787.8U CN201420286787U CN203894781U CN 203894781 U CN203894781 U CN 203894781U CN 201420286787 U CN201420286787 U CN 201420286787U CN 203894781 U CN203894781 U CN 203894781U
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Abstract
The utility model discloses a magnetic anti-counterfeiting mark and an identification system thereof. The magnetic anti-counterfeiting mark comprises a substrate, a magnetic ink layer, a light shielding layer and a protective coating; wherein the magnetic ink layer covers the substrate. Structures of characters, a bar code, patterns, etc. are composed of the magnetic ink. The light shielding layer covers the magnetic ink layer and shields the structures which are composed of the magnetic ink. The protective coating covers the light shielding layer and is made of a polymer or metal. The identification system comprises the components of: a magnetic sensor which is used for sensing the magnetic field that is transmitted from the magnetic anti-counterfeiting mark, a permanent magnet or electromagnet which is used for magnetizing the magnetic anti-counterfeiting mark; a digital processing circuit which is electrically connected with the magnetic sensor, and a frame which is used for fixing the magnetic sensor and the digital processing circuit. The digital processing circuit outputs a code which corresponds with the magnetic anti-counterfeiting mark. The magnetic anti-counterfeiting mark provided by the utility model has advantages of: simple manufacture, low cost, convenient use, etc. The identification system has advantages of simple structure, high portability and high identification accuracy.
Description
Technical field
The utility model relates to a kind of anti-counterfeiting mark, especially relates to a kind of magnetic anti-counterfeiting mark and recognition system thereof.
Background technology
Anti-counterfeiting mark be can paste, print, shift on subject matter surface, packing or adjunct (as commodity are listed, business card and antifake certificate card) be upper, has the sign of anti-fake effect.Anti-counterfeiting mark can help consumer to differentiate rapidly the true and false of commodity in industry-by-industry, and Protection of consumer rights and interests help enterprise customer to hit fake products, stop to copy in batches, protect brand names simultaneously, avoid economic loss.
At present, on market, common method for anti-counterfeit mainly contains following several: laser anti-counterfeit, watermark anti-counterfeiting, paper China ink is false proof, lead sealing is false proof, fluorescence falsification preventing, magnetic anti-counterfeit, temperature become false proof etc.Wherein, magnetic anti-counterfeit is mainly that the magnetic ink by printing forms character, pattern or bar code etc., then with magnetic detector, can detect magnetic signal, reads the encrypted message of its printing etc. with demoder.Magnetic anti-counterfeit sign of the prior art, great majority can be detected by MICR detecting device, and are easy to by counterfeit, the recognition system complicated structure of these magnetic anti-counterfeit signs, accuracy is also not high enough.
Summary of the invention
For overcoming above defect of the prior art, the utility model provides the magnetic anti-counterfeiting mark that a kind of making is simple, cost is low, easy to use.
For achieving the above object, the utility model provides following technical scheme:
A kind of magnetic anti-counterfeiting mark, this anti-counterfeiting mark comprises substrate, magnetic ink layer, light shield layer and protective finish, described magnetic ink layer covers in described substrate, and the magnetic ink that described magnetic ink layer can continue 5 ~ 6 hours by the superparamagnetic relaxation time forms character, bar code or the patterning with magnetism characteristic, optical characteristics and physical form;
Described light shield layer covers on described magnetic ink layer, and it is print structure or the weak ferromagnet that can hide described character, bar code or patterning;
The described protective finish consisting of the polymkeric substance that can not be magnetized or metal covers on described light shield layer;
The gross thickness of described light shield layer and described protective finish is less than or equal to the desired resolution of micr character.
Preferably, the thickness of described magnetic ink layer is 0.001 ~ 10 millimeter, and width is 0.01 ~ 1000 millimeter, and length is 0.01 ~ 1000 millimeter.
Preferably, the color of described magnetic texure is colored, comprises redness, yellow, green, the color that grey, black or its combination in any form.
Preferably, described magnetic ink comprises Hard Magnetic magnetic and/or soft-magnetic powder.
Preferably, when described magnetic ink consists of described Hard Magnetic magnetic, the diameter of described Hard Magnetic magnetic determines the described superparamagnetic relaxation time.
Preferably, at the back side of described substrate, be printed with an adhered layer.
The utility model also provides a kind of recognition system that can identify above-mentioned magnetic anti-counterfeiting mark, and this recognition system comprises:
At least one magnetic sensor, the magnetic field size that described magnetic sensor sends for magnetic anti-counterfeiting mark described in sensing;
For magnetizing the magnet of described magnetic anti-counterfeiting mark;
With the digital processing circuit that described magnetic sensor is electrically connected to, described digital processing circuit output and the corresponding coding of described magnetic anti-counterfeiting mark;
The nonmagnetic substance that employing can not be magnetized for the framework of fixing described magnetic sensor and described digital processing circuit.
Preferably, described magnetic sensor is InSb, Hall, AMR, GMR or TMR sensor.
Preferably, the overall width of described magnetic sensor is greater than the readable width of design or the width of described magnetic anti-counterfeiting mark, or the overall width of described magnetic sensor equals the readable width of design or the width of described magnetic anti-counterfeiting mark.
Preferably, the vertical range between described magnetic sensor and described magnetic anti-counterfeiting mark is 0.001 ~ 5 millimeter.
Preferably, the magnetizing field that described magnet produces is parallel or perpendicular to the surface of institute's sensed media.
Described in described magnetic sensor sensing, magnetic magnetic field that anti-counterfeiting mark sends is in the gradient that is parallel or perpendicular to the lip-deep component of its sensed media.
Preferably, described magnet is positioned on described framework, arbitrary end of described magnetic anti-counterfeiting mark or the back side of described magnetic anti-counterfeiting mark, and described magnetic anti-counterfeiting mark is magnetized before reading.
Preferably, described magnet is permanent magnet or electromagnet.
Compared with prior art, the utlity model has following beneficial effect:
1) anti-counterfeiting mark that the utility model provides is made simple, and cost is very low, can directly be printed on the carrier of papery or other materials, very easily for above file, banknote, credit card, packing etc.
2) anti-counterfeiting mark that the utility model provides, can be printed as the structures such as character, bar code or pattern as required.
3) anti-counterfeiting mark that the utility model provides, surface adopts common nonmagnetic toner to cover printing, cannot directly adopt in appearance optical instrument to detect, and conventionally under environment, is not externally showing magnetic, greatly reduces and is detected and imitated possibility.
4) anti-counterfeiting mark that the utility model provides, the size of character can need to be selected within a large range according to using, very easy to use.
5) recognition system that the utility model provides is simple in structure portable, and recognition accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology, to the accompanying drawing of required use in embodiment technical description be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of magnetic anti-counterfeiting mark of the present utility model.
Fig. 2 A-2C is the structural representation of recognition system of the present utility model.
Fig. 3 is for needing the situation schematic diagram of a plurality of magnetic sensors.
Fig. 4 is the character schematic diagram that magnetic ink forms.
Fig. 5 is that the character thickness in Fig. 4 is 0.2mm, and direction of magnetization is during perpendicular to paper direction, the output signal of magnetic sensor and the relation curve between character position.
Fig. 6 is that the character thickness in Fig. 4 is 0.5mm, and direction of magnetization is during perpendicular to paper direction, the output signal of magnetic sensor and the relation curve between character position.
Fig. 7 is that the character thickness in Fig. 4 is 0.2mm, when direction of magnetization is parallel to paper direction, and the output signal of magnetic sensor and the relation curve between character position.
Fig. 8 is that the character thickness in Fig. 4 is 0.5mm, when direction of magnetization is parallel to paper direction, and the output signal of magnetic sensor and the relation curve between character position.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Embodiment 1
Fig. 1 is the structural representation of the utility model magnetic anti-counterfeiting mark, and this magnetic anti-counterfeiting mark 1 comprises substrate 2, covers magnetic ink layer, light shield layer 4 and protective finish 5 in substrate 2.In the present embodiment, the character 3 of magnetic ink layer essence for being formed by magnetic ink, this magnetic ink includes Hard Magnetic magnetic and/or soft-magnetic powder, and when magnetic ink consists of Hard Magnetic magnetic, the diameter of Hard Magnetic magnetic has determined the superparamagnetic relaxation time T of magnetic ink
n.The thickness of the character 3 that magnetic ink forms is 0.001 ~ 10 millimeter, width is 0.01 ~ 1000 millimeter, length is 0.01 ~ 1000 millimeter, its color can be the color that redness, yellow, green, grey, black or any several color combination form, the color of character 3 is identical with the color of magnetic ink, in addition, magnetic ink can also form the structure such as bar code, pattern with magnetism characteristic, optical characteristics and physical form and replaces the character 3 here.The KV that the magnetic ink of formation character 3 has can make in desired constant working temperature, its superparamagnetic relaxation time T
ncan continue 5 ~ 6 hours, wherein, the energy density that K is particle magnetic anisotropy, V is particle volume.The relaxation time T of magnetic ink
ncan be not limited to above-mentioned 5 ~ 6 hours according to required selection of reality, can be also the longer time, as 1 ~ 2 day etc.Light shield layer 4 can be print structure or weak ferromagnet, also can consist of nonmagnetic toner, when character 3 is magnetized, light shield layer 4 does not show magnetic, light shield layer 4 covers on character 3, can make magnetism characteristic, optical characteristics and physical form etc. that character 3 has all externally not show.Protective finish 5 overlays on light shield layer 4, the polymkeric substance that can not be magnetized or metal, consists of, and it mainly plays the effect of protection character 3 and light shield layer 4 and further strengthens the screening effect to character 3.The gross thickness of light shield layer 4 and protective finish 5 is less than or equal to the desired resolution of micr character.This magnetic anti-counterfeiting mark 1 can directly stick on identified object, also can at the back side of substrate 2 (not covering the lower surface of magnetic ink layer), print an adhered layer, then by this adhered layer, magnetic anti-counterfeiting mark 1 is sticked on identified object.The identified thing at magnetic anti-counterfeiting mark 1 place is when this magnetic anti-counterfeiting mark of identification, the medium of recognition system institute sensing.
Embodiment 2
Fig. 2 A-2C is for identifying three kinds of structural representations of the recognition system of magnetic anti-counterfeiting mark 1.Recognition system comprises permanent magnet 7, framework 9, at least one magnetic sensor 6 and the digital processing circuit 8 being electrically connected to magnetic sensor 6, magnetic sensor 6 and digital processing circuit 8 are all fixed in framework 9, and framework 9 consists of the nonmagnetic substance that can not be magnetized.The difference of this three width of Fig. 2 A-2C figure is, the position difference of permanent magnet 7, and in Fig. 2 A, permanent magnet 7 is positioned at framework 9, and in Fig. 2 B, permanent magnet 7 is positioned at the back side of magnetic anti-counterfeiting mark 1, and in Fig. 2 C, permanent magnet 7 is positioned at one end of magnetic anti-counterfeiting mark 1.In Fig. 2 A and 2B, the magnetizing field that permanent magnet 7 produces is perpendicular to the medium of its sensing, and the surface of magnetic anti-counterfeiting mark 1, makes the direction of magnetization 100 of magnetic anti-counterfeiting mark 1 perpendicular to the surface of the identified object 10 at magnetic anti-counterfeiting mark 1 place.In Fig. 2 C, the magnetizing field that permanent magnet 7 produces is parallel to the medium of its sensing, i.e. the surface of magnetic anti-counterfeiting mark 1 makes the direction of magnetization 101 of magnetic anti-counterfeiting mark 1 be parallel to the surface of the identified object 10 at magnetic anti-counterfeiting mark 1 place.Magnetic sensor 6 can be InSb, Hall, and AMR, GMR or TMR sensor, be TMR sensor in the present embodiment.According to the needs of practical application, its overall width can be more than or equal to the width of magnetic anti-counterfeiting mark 1, also can be more than or equal to the readable width of design.Vertical range between magnetic sensor 6 and magnetic anti-counterfeiting mark 1 is 0.001 ~ 5 millimeter.Figure 3 shows that the situation that needs a plurality of magnetic sensors 6.
After magnetic anti-counterfeiting mark 1 is by permanent magnet 7 magnetization, produce magnetic field, the gradient of magnetic sensor 6 magnetic field magnetic-field component in X-axis or Z-direction that just sensing magnetic anti-counterfeiting mark 1 sends, wherein X-direction is the direction that is parallel to magnetic anti-counterfeiting mark 1 surface of institute's sensing, and Z-direction is the direction perpendicular to magnetic anti-counterfeiting mark 1 surface of institute's sensing.In Fig. 2 A and 2B, magnetic sensor 6 sensings be the gradient of magnetic-field component in X-direction, in Fig. 2 C, magnetic sensor 6 sensings be the gradient of magnetic-field component in Z-direction.Then, magnetic sensor 6 flows to digital processing circuit 8 by sensed signal, and digital processing circuit 8, according to the signal receiving, is exported and the corresponding coding of magnetic anti-counterfeiting mark 1.
Take the magnetic character shown in Fig. 4 as example, the magnetic field size of coming sensing character to send along the horizontal center line of character with a magnetic sensor.Fig. 5 and Fig. 6 are respectively the direction of magnetization of character perpendicular to paper direction, when character thickness is 0.2 millimeter and 0.5 millimeter, and the X-direction component that magnetic sensor senses and the relation curve of character position.The direction of magnetization that Fig. 7 and Fig. 8 are respectively character is parallel to paper direction, when character thickness is 0.2 millimeter and 0.5 millimeter, and the Z-direction component that magnetic sensor senses and the relation curve of character position.Contrast this four width figure and just can find, for the character of stack pile, the direction of magnetization of character is more obvious than the crest being parallel in paper direction on perpendicular to paper direction, and peak value is also larger; For the character of identical direction of magnetization, its thickness is larger, and crest is more obvious, and peak value is also larger, i.e. the signal of magnetic sensor output is stronger, also just means that recognition effect is better.According to the crest in figure, just can judge the corresponding position of character, with a plurality of magnetic sensors 6, carry out this magnetic character of sensing, just can be identified.
In the present embodiment, be to magnetize magnetic anti-counterfeiting mark 1 with permanent magnet, also can replace permanent magnet with the magnetic bodies that electromagnet etc. can be used for magnetizing magnetic anti-counterfeiting mark 1, its principle is identical, this superfluous chatting no longer just.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (14)
1. a magnetic anti-counterfeiting mark, this anti-counterfeiting mark comprises substrate, magnetic ink layer, light shield layer and protective finish, it is characterized in that,
Described magnetic ink layer covers in described substrate, and the magnetic ink that described magnetic ink layer can continue 5 ~ 6 hours by the superparamagnetic relaxation time forms character, bar code or the patterning with magnetism characteristic, optical characteristics and physical form;
Described light shield layer covers on described magnetic ink layer, and it is print structure or the weak ferromagnet that can hide described character, bar code or patterning;
The described protective finish consisting of the polymkeric substance that can not be magnetized or metal covers on described light shield layer;
The gross thickness of described light shield layer and described protective finish is less than or equal to the desired resolution of micr character.
2. magnetic anti-counterfeiting mark according to claim 1, is characterized in that, the thickness of described magnetic ink layer is 0.001 ~ 10 millimeter, and width is 0.01 ~ 1000 millimeter, and length is 0.01 ~ 1000 millimeter.
3. magnetic anti-counterfeiting mark according to claim 1 and 2, is characterized in that, the color of described magnetic ink is colored, comprises redness, yellow, green, the color that grey, black or its combination in any form.
4. magnetic anti-counterfeiting mark according to claim 1, is characterized in that, described magnetic ink comprises Hard Magnetic magnetic and/or soft-magnetic powder.
5. magnetic anti-counterfeiting mark according to claim 4, is characterized in that, when described magnetic ink consists of described Hard Magnetic magnetic, the diameter of described Hard Magnetic magnetic determines the described superparamagnetic relaxation time.
6. magnetic anti-counterfeiting mark according to claim 1, is characterized in that, at the back side of described substrate, is printed with an adhered layer.
7. can identify a recognition system for magnetic anti-counterfeiting mark claimed in claim 1, it is characterized in that, this recognition system comprises:
At least one magnetic sensor, the magnetic field size that described magnetic sensor sends for magnetic anti-counterfeiting mark described in sensing;
For magnetizing the magnet of described magnetic anti-counterfeiting mark;
With the digital processing circuit that described magnetic sensor is electrically connected to, described digital processing circuit output and the corresponding coding of described magnetic anti-counterfeiting mark;
The nonmagnetic substance that employing can not be magnetized for the framework of fixing described magnetic sensor and described digital processing circuit.
8. recognition system according to claim 7, is characterized in that, described magnetic sensor is InSb, Hall, AMR, GMR or TMR sensor.
9. according to the recognition system described in claim 7 or 8, it is characterized in that, the overall width of described magnetic sensor is greater than the readable width of design or the width of described magnetic anti-counterfeiting mark, or the overall width of described magnetic sensor equals the readable width of design or the width of described magnetic anti-counterfeiting mark.
10. according to the recognition system described in claim 7 or 8, it is characterized in that, the vertical range between described magnetic sensor and described magnetic anti-counterfeiting mark is 0.001 ~ 5 millimeter.
11. recognition systems according to claim 7, is characterized in that, the magnetizing field that described magnet produces is parallel or perpendicular to the surface of institute's sensed media.
12. recognition systems according to claim 7, is characterized in that, the gradient of magnetic magnetic field that anti-counterfeiting mark sends lip-deep component of sensed media being parallel or perpendicular to described in described magnetic sensor sensing.
13. recognition systems according to claim 7, is characterized in that, described magnet is positioned on described framework, arbitrary end of described magnetic anti-counterfeiting mark or the back side of described magnetic anti-counterfeiting mark, and described magnetic anti-counterfeiting mark is magnetized before reading.
14. recognition systems according to claim 7, is characterized in that, described magnet is permanent magnet or electromagnet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420286787.8U CN203894781U (en) | 2014-05-30 | 2014-05-30 | Magnetic anti-counterfeiting mark and identification system thereof |
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| CN201420286787.8U CN203894781U (en) | 2014-05-30 | 2014-05-30 | Magnetic anti-counterfeiting mark and identification system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056538A (en) * | 2015-07-31 | 2015-11-18 | 立华彩印（昆山）有限公司 | Toy car printing rail with hidden digital signals |
| WO2015180569A1 (en) * | 2014-05-30 | 2015-12-03 | 江苏多维科技有限公司 | Magnetic anti-counterfeit mark and identification system thereof |
| CN106157055A (en) * | 2015-04-22 | 2016-11-23 | 上海天臣防伪技术股份有限公司 | False proof trace to the source mark and recognition methods thereof |
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2014
- 2014-05-30 CN CN201420286787.8U patent/CN203894781U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180569A1 (en) * | 2014-05-30 | 2015-12-03 | 江苏多维科技有限公司 | Magnetic anti-counterfeit mark and identification system thereof |
| US9805224B2 (en) | 2014-05-30 | 2017-10-31 | MultiDimension Technology Co., Ltd. | Magnetic anti-counterfeit label and identification system thereof |
| CN106157055A (en) * | 2015-04-22 | 2016-11-23 | 上海天臣防伪技术股份有限公司 | False proof trace to the source mark and recognition methods thereof |
| CN105056538A (en) * | 2015-07-31 | 2015-11-18 | 立华彩印（昆山）有限公司 | Toy car printing rail with hidden digital signals |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: James.G.Dicke Inventor after: Cheng Xiaofeng Inventor before: James.G.Dicke |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JAMES G. DICKE TO: JAMES G. DICKE CHENG XIAOFENG |