CN100509430C

CN100509430C - Anti-counterfeiting element

Info

Publication number: CN100509430C
Application number: CN03807002.2A
Authority: CN
Inventors: 沃尔特·施奈德
Original assignee: Giesecke and Devrient GmbH
Current assignee: Giesecke and Devrient GmbH
Priority date: 2002-03-27
Filing date: 2003-03-24
Publication date: 2009-07-08
Anticipated expiration: 2023-03-24
Also published as: EP1494874B1; BR0308772B1; RU2337011C2; DE50308409D1; BR0308772A; DE10213794B4; RU2004131654A; ATE375870T1; AU2003226704A8; ES2290482T3; SI1494874T1; UA86742C2; WO2003080365A2; PL218532B1; KR100984210B1; EP1494874A2; WO2003080365A3; CN1646327A; DE10213794A1; AU2003226704A1

Abstract

The invention relates to a bar code which is integrated into the paper in the form of a watermark. The fields (6) separating the information-providing bars of the bar code are configured as watermarks. The information-providing bars can but do not necessarily have to be configured as watermarks. Their breadth is the result of the distance between the separating fields (6). The separating fields (6) are narrower than the information-providing bars, thereby keeping the entire length of the bar code short.

Description

Security element

Technical field

The present invention relates to Security element, i.e. the bar code of watermark form, and by cheque paper and value document or security document that this Security element is made for example has banknote, check, stock, identity card, public transport ticket, admission ticket of this bar code etc.; Also relate to method and the paper making wire cloth of making this cheque paper in addition.

Background technology

As everyone knows in order to make security document or value document, the bar code of watermark form is combined in the paper, particularly be combined in the cheque paper.For example, if certain is worth certain watermark that all has same form with all banknotes at certain issuing date, then can detect the authenticity of banknote with reference to this bar code.By relatively being printed on sequence number and the denomination on the banknote, can detect the authenticity of this banknote with reference to bar code.According to the complexity of information encoded in the watermark bar code, this bar code may be longer for the less value document of size (for example banknote), and this is undesirable.

Yet this problem not only is the length of bar code, and particularly in the auditability for definite authenticity.Because wide more as the band that watermark is combined in the paper, then its profile is irregular more when transmission is seen.Reason is difficult manufacturing of watermark that has the dull surfaces of rule.In order to make this watermark, paper making wire cloth will can be influenced the deposition of the paper fiber in the paper forming process like this by embossing (embossed).If the paper making wire cloth embossing is dark, then more paper pulp is deposited on this zone, and embossing can hinder the deposition of paper pulp deeply.When there was embossing on above-mentioned surface, all edges on this surface all will be made well again.It is bright or dim that this surface itself becomes towards its inner face zone.

Summary of the invention

The purpose of this invention is to provide a kind of more general and more save the bar code of the watermark form in space.Value document paper or security document that another object of the present invention provides a kind of cheque paper that has a this bar code and made by this cheque paper, and method and the paper making wire cloth of making this cheque paper.

These purposes can utilize bar code of the present invention, cheque paper, security document, method and paper making wire cloth to reach.The invention provides a kind of cheque paper that has general fibre density, be used to make the value document or the security document that comprise banknote, check, stock, identity card, public transport ticket, admission ticket, comprise that separating the information that scope separates each other by utilization transmits the bar code that band is formed; It is characterized by, this separates scope and is combined in this cheque paper as watermark, makes to separate in the zone of scope at these that fibre density of this cheque paper departs from general fibre density.The present invention also provides a kind of usefulness security document or value document that above-mentioned cheque paper is made.The method that the present invention also provides a kind of manufacturing to have the cheque paper of general fibre density, this cheque paper are used to make security document or the value document that comprises banknote, check, stock, identity card, public transport ticket, admission ticket; This security document or value document have and separate the information that scope separates each other by utilization and transmit the bar code that band is formed; Wherein separate in the zone of scope at this, this cheque paper forms watermark, and its fibre density departs from general fibre density.The present invention also provides a kind of paper making wire cloth that is used to make cheque paper, and this cheque paper has and separates the information that scope separates each other by utilization and transmit the bar code that band is formed; Wherein this paper making wire cloth has and is used to make the zone that this separates scope, wherein, this paper making wire cloth forms in these zones in order to form watermark in the paper with this paper making wire cloth manufacturing, deposit at forward or negative sense and influence this fiber, so that the deposition that more fiber laydown is arranged in this zone or hinder fiber.In other aspects of the present invention, further illustrate the preferred embodiments of the present invention and development.

Therefore, separate scope and form detectable uniquely watermark, it is separated from each other that information transmission band separates scope by this.These separate scope can be the band of (separating scope) with the bar code reader detection.Yet actual bar code information is not to be determined by the width of (the separating scope) band that is detected, but the width in zone is determined between (the separating scope) band that detects by being positioned at.Therefore, each all marks with the band that this separates scope to represent these zones (that is, information transmits the beginning and the end of band) of the actual band of bar code.

Compared with the prior art, this structure has following two advantages.At first, transmit band in this information that separates the bar code between the scope and can select any width.Because when assessment, do not consider that this information transmits the brightness of band, the strip face of the irregular filling that therefore seems dark or bright under transmitted light is also no problem.Secondly, particularly utilize the electrotyping on paper making wire cloth, this can be separated scope and form narrowly especially, as a result short the and saving space of the total length of bar code.

In order further to reduce the length of bar code, preferably this bar code is formed the bar code of two dimension.This bar code has several for example parallel information tracks.

A special preferred embodiment of the present invention proposes not to be designed to watermark in the zone that this actual information that separates this bar code of formation between the scope transmits band, and therefore under transmitted light, having only this to separate scope is the watermark band as can be seen.First and last separate the border that scope forms this bar code.

In order to increase contrast, the information of bar code transmits band also can be designed to watermark, and this separates scope and then forms bright watermark, and this information transmits band and forms dark watermark, or opposite.Bright information transmission band preferably this information do not transmitted band but this separated scope and form bright watermark, because otherwise when strip width increased, can make the danger of tangible pore-forming on the paper.

According to a specific embodiment of the present invention, be positioned at the bar code edge, for example utilize its characteristic width or its fibre density represent first and last of separating scope separate scope, formation will be given the information content of different in width band, be that wide band is represented " 1 ", and the fillet band is represented " 0 ", or opposite.Another kind of scheme is, first band can be defined as the start bit, and its width can represent that the wide band of this bar code represents that " 1 " and fillet band represent " 0 ", or on the contrary.

According to a preferred embodiment of the present invention, this security document or value document have additional medium for storing.This can be magnetic storage medium (for example, magnetic track) or electronic storage medium (microchip that for example, has integrated circuit).Utilize this embodiment, this bar code can comprise the data that are used for the information Code And Decode, rather than the price of file.In this storage medium, the price of storing the file that provides with the file sequence number by bar code in mode easily, or the predetermined synthesis result of this price factor and sequence number.Utilize this method, the anti-counterfeiting of file and the auditability of authenticity increase.When making this document or when this document begins to drop into circulation, can in this additional storage medium, carrying out this comprehensive storage.When detecting authenticity, can from this storage medium, read this comprehensive result.If comprehensive mode is known, and the file price can read from the bar code watermark at an easy rate, so can reconstruction sequence number.In addition, if directly read sequence number, check in addition then whether this storage medium of reading really belongs to the possibility of single file (for example banknote) from this document.

In addition, the same with the formation of bar code of the present invention, for example the scrambling of the turbidness of the paper in the barcode size or text field or single part edge stretching, extension can be used as additional measured value, thereby increases the anti-counterfeiting of file or improve the authenticity test.

Description of drawings

Below, utilize example that the present invention is described with reference to accompanying drawing.

Fig. 1 represents to have the banknote of watermark bar code of the present invention;

Fig. 2 represents the transmitted light view of watermark bar code of the present invention;

Fig. 3 represents the transmitted light view of another watermark bar code of the present invention;

Fig. 4 schematically shows the cross section of paper making wire cloth;

Fig. 5 represents the transmitted light intensity curve of first embodiment of watermark bar code according to the present invention;

Fig. 6 represents the transmitted light intensity curve of second embodiment of watermark bar code according to the present invention;

Fig. 7 represents the transmitted light intensity curve of the 3rd embodiment of watermark bar code according to the present invention;

Fig. 8 represents the transmitted light view according to the watermark bar code of prior art;

Fig. 9 represents the transmitted light intensity curve according to the watermark bar code of prior art; With

Figure 10 represents the transmitted light intensity curve according to the watermark bar code of another prior art.

The specific embodiment

Fig. 1 represents that by way of example face amount 2 is a kind of as in many possible value documents and the security document of the banknote 1 of " Euro 100 ".Banknote 1 has the bar code 3 of two dimension, and it is incorporated in the cheque paper with the watermark form, and banknote 1 is promptly used this cheque paper manufacturing.

From the value document that has the one-dimensional bar code of watermark form known in the state of the art.Wide more as the band that watermark is combined in the paper, then its profile is irregular more under transmitted light, therefore assesses this band and is a problem very much.This is illustrated among Fig. 8.Fig. 8 is shown schematically in the watermark bar code of watching under the transmitted light 3.This bar code 3 utilizes the paper making wire cloth manufacturing that embossing is arranged, and this silk screen impels the paper fiber laydown in its embossed area of producing the band 5 of bar code 3.Yet fibre density (being the thickness of paper) reduces towards the interior zone of this strip face, make that this surperficial fringe region imaging is fine, but under transmitted light, this surperficial interior zone seems brighter with respect to fringe region.This, is drawn among the figure and departs from normal transmitted light intensity I in Fig. 9 with diagrammatic representation ₀Transmitted light intensity I ⁺, I ^-As can be seen, this band is wide more, then at the approaching more normal transmitted light intensity I of the transmitted light intensity I of this band center ₀Here should consider the normal transmitted light intensity value I in Fig. 9 ₀Represent with ideal style.In fact, this value I ₀Be around mean variation, though therefore can not reach the centre above band 5, the bar code sensor of wide band can signal at the terminal of band 5 or the place that begins that separates scope 6.This can cause readout error, because wide band 5 can be two billet bands because of mistake is resolved.

Use bright bar code to replace another example of dark bar code to have same shortcoming, that is, fibre density reduces towards the centre of band.The result neither desired size the wide band of rule.In addition, wide band also has the danger that forms the hole on paper.

Figure 10 represents do not have the problems referred to above from the transmitted light intensity I of the known bar code of DE 3034916A1 in this bar code.According to this patent, on the zone of the used paper making wire cloth of the band of making bar code, extrude the rectangle embossing, rather than on paper making wire cloth, extrude the isosceles triangle decorative pattern.Utilize the part of the watermark of the brink production in the paper under transmitted light, to take it is different dark or bright fringes easily as, and the beginning of expression band 5.Whether band 5 represents that " 1 " or " 0 " do not depend on its width, but depends on that this band is bright or dark.The embossing of this paper making wire cloth that this expression begins from the paper making wire cloth horizontal plane is down or up.Because like this, the length of whole bar code also can shorten, because can save in order to separate scope 6 between the single band 5 of knowing boundary and being provided with setting up each other.Yet shortcoming is that this bar code is restricted to digital coding, because only need distinguish bright area and dark areas.

Fig. 2 and Fig. 3 illustrate separately when seeing under transmitted light, the part of the different embodiment of the watermark bar code of telling from Fig. 1 according to line AA 3.In both cases and below in the example of explanation, the serve as reasons digitized bar code of " 0 " and " 1 " composition of this bar code.The width of this band has been indicated value " 0 " or " 1 ".This band 5 scope 6 that is spaced separates each other, and first and last separate the border that scope forms this bar code.Like this, Fig. 2 and bar code shown in Figure 3 each pronounce 0-1-1-0.

Compare with band 5, separate scope 6 among the embodiment according to Fig. 2 and seem dark.This fibre density that is illustrated in banknote in the zone that separates scope 6 increases, and this fibre density is that the corresponding embossing by the paper making wire cloth that is used to make bank-note paper produces.The embossing of this paper making wire cloth increases the paper fiber laydown in the paper-making process.When under transmitted light, seeing this paper, because the paper fiber laydown increases, the corresponding reduction of transmitted light intensity, so this separates scope 6 and seems dark.The band 5 that forms the bar code actual information neither seems brighter, also not darker than the banknote material that surrounds bar code under transmitted light, because this band 5 is without any the feature of watermark.Because what utilize that bar code reader detects is not that information transmits band 5 but separates scope 6, therefore, information transmits the width of band and can only determine via the detected distance that separates between the scope 6 indirectly.

Embodiment shown in Figure 3 also is a kindred circumstances.Different with the embodiment according to Fig. 2, except separating the scope of high order end, the scope 6 that separates of bar code seems bright.This is bright separates scope 6 and can utilize so-called electrotyping to produce especially significantly.Electrotyping is generally little metal parts, and they are fixed on the side of paper making wire cloth by the support that soldering or utilization enter in the silk screen mesh, and bending is come.Utilize this electrotyping, can obtain very narrow and bright especially transmitted light effect, utilize sensor to detect this effect easily.

As the situation among Fig. 2, the separating the wide band of scope 6 below having defined and can think " 0 " of high order end among Fig. 3, fillet band 5 can think " 1 ".If the scope 6 of separating of high order end forms the bright scope that separates that separates scope 6 as every other, then the information content of band 5 will be read with additive method.Like this, the full detail of this bar code is not pronounced 0-1-1-0, but 1-0-0-1.

Also can not adopt the fibre density that separates scope 6 of the transmitted light intensity or the high order end of feature, and adopt low order end separate scope 6, this width that separates scope can also can be represented these contents with wide relevant with information content fillet band 5.These two kinds of possibilities also can comprehensively come to determine the further information of bar code.

Another kind of scheme or other, first or last band 5 also can be used as start bit or stop bits.The width of this start bit band or stop bits band provides information: this wide band can be thought " 0 " and the fillet band can be thought " 1 ", or opposite.

Fig. 4 utilizes example to schematically show the part of paper making wire cloth 8, utilizes this silk screen can make paper according to the band watermark bar code of Fig. 3.This paper making wire cloth 8 has being used to of suitably separating and produces the bright electrotyping that separates scope 67 on papermaking surface, and the dark zone 9 of the embossing that separates scope 6 that is used to produce high order end.In separating on the scope 6 of this high order end, the thickness of paper or fibre density increase, and therefore seem dark under transmitted light.

Fig. 5 represents and the ideal process that has the dark transmitted light intensity that separates scope 6 bar code similar with the bar code that has information transmission band 5 shown in Figure 2.Transmitted light intensity I in the zone that separates scope 6 is positioned at the regular transmission light intensity I of bank-note paper ₀Below, because this fibre density F that separates in the zone of scope 6 is corresponding bigger.If light intensity increases I ⁺Draw be upwards and fibre density increase F ⁺It is downward drawing, and then transmitted light intensity curve I is consistent with fibre density curve F.Therefore, transmitted light intensity curve and fibre density curve all use mark 4 to represent.

Fig. 6 represents the transmitted light intensity of the bar code similar to bar code shown in Figure 3 and the curve 4 of fibre density.In this case, except transmitted light intensity I at normal transmitted light intensity I ₀Separating beyond the scope 6 of following high order end, in the zone that separates scope 6, transmitted light intensity I is at normal transmitted light intensity I ₀More than.Opposite with the explanation according to Fig. 5, the transmitted light intensity curve among Fig. 6 is represented in less-than-ideal mode.As a result, although obviously along the distribution I of the elongation of the band 5 of bar code ₀, F ₀Roughly be regular, but transmitted light intensity or fibre density are around its mean value I ₀Or F ₀Change slightly.This mean value I ₀And F ₀Expression " normal transmitted light intensity " and " general fibre density ".

Fig. 7 represents an alternative embodiment of the invention.It is according to the prior art of Fig. 9 and comprehensive according to the embodiment of Fig. 6 or Fig. 3 basically.This expression, this separates scope 6 and band 5 assembles an integral body with watermark form and paper, and this information transmits band 5 and be shown as the dark zone that has bright slightly center under transmitted light, and this separates the bright line that scope 6 is shown as easy identification significantly.In the zone that separates scope 6, extra high transmitted light intensity surpasses the transmitted light intensity in the brighter central area of information transmission band 5, therefore can get rid of as beginning described explanation of error.With according to Fig. 5 and 6 or the embodiment of Fig. 2 and Fig. 3 relatively, can make the zone of band 5 and the contrast that separates between the scope 6 increases in addition again according to the embodiment of Fig. 7, can improve the readability of this bar code like this.

Claims

1. have general fibre density (F ₀) cheque paper, be used to make the value document or the security document that comprise banknote, check, stock, identity card, public transport ticket, admission ticket, comprise that separating the information that scope (6) separates each other by utilization transmits the bar code (3) that band (5) is formed; It is characterized by, this separates scope (6) and is combined in this cheque paper as watermark, makes to separate in the zone of scope (6) at these that fibre density of this cheque paper (F) departs from general fibre density (F ₀).

2. cheque paper as claimed in claim 1 is characterized by with this zone that separates scope (6) and compares, and transmits in the zone of band (5) in this information, and the fibre density of cheque paper (F) departs from this general fibre density (F ₀);

Wherein, transmit in the zone of band (5) in this information, the fibre density of cheque paper (F) is than general fibre density (F ₀) big; And separate in the zone of scope (6) at this, the fibre density of cheque paper (F) is than general fibre density (F ₀) little, vice versa.

3. cheque paper as claimed in claim 1 is characterized by in this information and transmits in the zone of band (5), and the fibre density of this cheque paper (F) is equivalent to general fibre density (F ₀).

4. as each described cheque paper in the claim 1～3, it is characterized by this and separate scope (6) to transmit band (5) than this information narrow.

5. as each described cheque paper in the claim 1～3, it is characterized by when observing under transmitted light, in the scope (6) at least one of separating of this cheque paper separates scope and seems than having general fibre density (F ₀) cheque paper regional bright; And other separate in the scope (6) at least one and separate scope and seem than having general fibre density (F ₀) the zone of cheque paper dark.

6. as each described cheque paper in the claim 1～3, it is characterized by the information that is positioned at bar code (3) boundary and transmit band (5) and have a characteristic, i.e. each band in the various bands (5) of different in width of this bar code (3) is given " 0 " or " 1 " in its indication.

7 cheque papers as claimed in claim 6, the characteristic that it is characterized by this information transmission band is its width and/or fibre density.

8. as each described cheque paper in the claim 1～3, it is characterized by this bar code (3) is two-dimensional bar.

9. as each described cheque paper in the claim 1～3, it is characterized by, this cheque paper has additional storage medium.

10. cheque paper as claimed in claim 9 is characterized by described additional storage medium and comprises zone or the microchip that is used for magnetic storage information.

11. security document or value document (1) is characterized by described security document or value document (1) and comprise as each described cheque paper in the claim 1～9.

12. security document as claimed in claim 11 or value document is characterized by it and select from the following files group: banknote, check, stock, identity card, public transport ticket, admission ticket.

13., it is characterized by this document and have additional storage medium as claim 11 or 12 described security document or value documents.

14. security document as claimed in claim 13 or value document is characterized by described additional storage medium and comprise zone or the microchip that is used for magnetic storage information.

Have general fibre density (F 15. make ₀) the method for cheque paper, this cheque paper is used to make security document or the value document (1) that comprises banknote, check, stock, identity card, public transport ticket, admission ticket; This security document or value document (1) have and separate the information that scope (6) separates each other by utilization and transmit the bar code (3) that band (5) is formed; It is characterized by at this and separate in the zone of scope (6) this cheque paper formation watermark, its fibre density (F ⁺, F ^-) depart from general fibre density (F ₀).

16. method as claimed in claim 15, it is characterized by it and utilized the paper making wire cloth (8) that in the zone that separates scope (6), forms, its mode is in this zone, influence the deposition of fiber in order in the cheque paper that will make, to make watermark, so that the deposition that more fiber laydown is arranged or hinder fiber in this zone.

17. method as claimed in claim 16 is characterized by in this information and transmits in the zone of band (5), this paper making wire cloth (8) is not by embossing, and making does not influence the deposition of fiber in these zones.

18. method as claimed in claim 16 is characterized by in this information and transmits in the zone of band (5), this paper making wire cloth (8) is made the deposition that influences this fiber in these zones by embossing, so that more fiber laydown is arranged.

19. as each described method in the claim 15～17, it is characterized by at this and separate in one of them at least one zone (9) of scope (6), this paper making wire cloth (8) is by embossing, to influence the deposition of this fiber, so that more fiber laydown is arranged.

20. as each described method in the claim 15～17, it is characterized by at this and separate at least one zone of scope (6), this paper making wire cloth (8) is equipped with electrotyping (7), thereby influences this fiber, so that hinder the deposition of fiber.

21. be used to make the paper making wire cloth (8) of cheque paper, this cheque paper has general fibre density (F0) and separates the information that scope (6) separates each other by utilization and transmits the bar code (3) that band (5) is formed; It is characterized by this paper making wire cloth (8) has and is used to make the zone that this separates scope (6), wherein, this paper making wire cloth is formed in these zones in order to form watermark in the paper with this paper making wire cloth manufacturing, deposit and influence this fiber, wherein the fibre density that separates scope (6) (F) of this cheque paper departs from general fibre density (F ₀).

22. paper making wire cloth as claimed in claim 21, it is characterized by in formation information and transmit in the zone of band (5) this paper making wire cloth not by embossing, make that the deposition of fiber is unaffected in these zones, and in the paper of this paper making wire cloth manufacturing, do not form watermark.

23. paper making wire cloth as claimed in claim 21, it is characterized by in the zone of formation information transmission band (5) this paper making wire cloth embossing, thereby influence the deposition of fiber in these zones in order in the paper of this paper making wire cloth manufacturing, to form watermark, so that more fiber laydown is arranged.

24. as claim 21 or 22 described paper making wire cloths, it is characterized by in forming this at least one zone (9) that separates scope (6) this paper making wire cloth embossing, thereby influence the deposition of this fiber in order in the paper of this paper making wire cloth manufacturing, to form watermark, so that more fiber laydown is arranged.

25. as each described paper making wire cloth in the claim 21～23, it is characterized by that this paper making wire cloth is equipped with electrotyping (7) in forming this at least one zone that separates scope (6), thereby influence the deposition of fiber in order in the paper of this paper making wire cloth manufacturing, to form watermark, so that hinder the deposition of fiber.

26., it is characterized by this zone that separates the paper making wire cloth of scope (6) of formation and form narrowlyer than those zones of the paper making wire cloth that is used to form information transmission band (5) as each described paper making wire cloth in the claim 21～23.