DE3843076A1 - Security element to protect documents against unauthorized reproduction - Google Patents

Security element to protect documents against unauthorized reproduction

Info

Publication number
DE3843076A1
DE3843076A1 DE3843076A DE3843076A DE3843076A1 DE 3843076 A1 DE3843076 A1 DE 3843076A1 DE 3843076 A DE3843076 A DE 3843076A DE 3843076 A DE3843076 A DE 3843076A DE 3843076 A1 DE3843076 A1 DE 3843076A1
Authority
DE
Germany
Prior art keywords
light
security
characterized
security element
structures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE3843076A
Other languages
German (de)
Inventor
Walter Dipl Chem Dr Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAO GES AUTOMATION ORG
Original Assignee
GAO GES AUTOMATION ORG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAO GES AUTOMATION ORG filed Critical GAO GES AUTOMATION ORG
Priority to DE3843076A priority Critical patent/DE3843076A1/en
Priority claimed from DE1989508323 external-priority patent/DE58908323D1/en
Publication of DE3843076A1 publication Critical patent/DE3843076A1/en
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04Preventing copies being made of an original
    • G03G21/043Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48Elements suited for physical verification, e.g. by irradiation
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/0032Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using holograms

Description

The invention relates to a security element according to the Preamble of claim 1.

In the production of paper for banknotes, checks, Passports, hereinafter referred to briefly as security papers net, it corresponds to the state of the art, so-called Si insert security threads into the paper. Here han is it a small ribbon made of plastic or Metal or any composite materials that the Manufacturing process of the paper with in the paper sheet be embedded. Such security threads are on fer leaf in transmitted light according to their Recognize nature and serve to authenticate the relevant paper.

A method is known from EP-OS 02 29 645, according to which this security thread is also incorporated into the paper can be that it can be determined at some predetermined positions len comes out of the paper pulp and thus at the Surface of the paper lies. This procedure is ins of particular interest if the thread is metallic has reflective properties and therefore reflect has the shine. It is known that such mirror the objects in photocopiers are not in the same Way can be reproduced. Instead of the specular shiny thread surface creates only a black one Stain through which the copy as such clearly stands out Original differs. However, there are ways also on the copy afterwards a corresponding game to produce a glossy yellow surface (e.g. by application corresponding paints).

The object of the present invention is now an Si provide security element, which on the one hand by itself out as an authenticity feature in a corresponding security can be recognized, but also other used to protect against unauthorized copying  can be.

This task is carried out in the characterizing part of the Main claim specified features solved.

Such a security element, the z. B. the shape a security thread embedded in the document would have in the attempt to manufacture a copy on this copy so clear effects call that these are no longer in the sense of the original can be repaired.

From various documents (DE-PS 25 55 214; EP-C 59 059; EP-C 70 172; US-PS 44 37 935) it is indeed knows documents with light-deflecting, in particular to provide light diffractive structures. Here, however only the structure itself is an authenticity feature that Easily reproduced photographically or electrophotographically is cash. However, these light diffractive structures prevent not that the document is in outside of these structures the desired shape is copied.

It has now been found that security elements indeed what special properties can be generated exhibit. In general, these are also the foils or foil strips known per se e.g. B. polyester or polycarbonate with a vapor-deposited Metal layer. These foils, foil strips or threads correspond to the state of the art in various designs Technology and can, for example, with evaporation of Aluminum, nickel, gold, titanium nitrite and other mate rialien be generated. In addition, however, in the Surface of this thread has a special structure shapes which of the incident light in a special way distracts, bends or reflects. The inventive Ge thank you is by distracting the incident Light to deflect the light rays so that they only  at a predetermined angle, - from the angle of incidence different - can be seen. As a special advantage it proves to be if the distracted, in particular diffracted beam on the one hand at right angles to the thread path direction, but on the other hand to the normal to Thread surface includes a given angle. Be you look for a document that has such a thread contains, so with normal, d. H. perpendicular to the Area directed, observation no special effects to recognize. When holding the document at an angle (where before partly the thread as an axis for the inclination is visible) appear bright at defined angles Light reflections, which, however, when the docu mentes disappear again. With a quick checking Movement of the document around the thread axis thus appears a brief flash of the deflected light rays. This property of the security thread can be seen partially used as an authenticity feature, because it is in particular which is not possible with simple means, such Subsequent appearance on a counterfeit or copy to evoke.

It has been found that a thread of the invention appropriate type then particularly advantageous properties shows when in a copier (whether black white or colored) an attempt is made to do duplicate document by unauthorized copying. This is done, for example, to illuminate the template a gas discharge tube or the like is used. The Light reflected from the original is reflected by a photo graphic object onto a photoconductive drum formed and there created a charge image of the template. Through subsequent use of toners and transmission a copy of the ge is made on any substrate given template. The invention in or on the However, the document's security element causes that the one on the surface of the security element  falling light rays are not diffusely scattered, but first through the reflective metal layer a black image is created at this point. This is basically not different from the use simp metal-coated safety threads. Additionally results however, that the deflected light rays the object tiv and the photoconductive drum in one place which usually contains information from another Place of the template would be included. This creates here an additional bright light effect, wel usually on the photoconductive drum existing information outshines at this point and thus deletes. According to the invention from such a Thursday Document made copy does not just show instead black spots on the reflective security thread, but also in the area of the text or the illustration bright spots, which act as interruptions are easily recognizable in the text or in the illustration. These stains leave even with an otherwise perfect copy immediately recognize that this is not an origi nal, but must be a fake.

For example, if you have a banknote with the invent thread according to the invention and also provides that this Thread in at least one place within the banknote emerges on the surface of the note, it follows a first embodiment of the method according to the invention. A banknote also usually has one line-like background pressure, which covers almost the entire Covered area of the note. If you try one now Copying the note results at the point where else the exposed thread would be recognizable, a dark area in the copy. Beyond that, however, one finds in the Be range of linear background pressure one or more There are clearly visible interruptions. So this is Easily recognize a copy as a forgery.  

In a further embodiment of the invention make the security thread so that within of the light beam bent to the side as a result of the particular the execution of the surface structure a recognizable or readable information is included. So in Be rich in the hel arising from the lateral deflection additional stains on the copy black cross or another suitable sign stand, which improves the recognizability of the copy and in addition the secondary improvement of one Copy hindered.

The particular advantage of the security threads mentioned is to be seen in the fact that they are not just wrong in the copy are formed (which can be achieved by applying Can easily touch up paints), but that they can positively necessary information on other parts of the Outshine security paper and therefore unrecognizable do. It follows that the copy is not just a such is easily recognizable, but that also a part the information usually available there will no longer be recognizable on the copy.

The production of a thread of the type mentioned is with fundamentally possible with the existing means of technology Lich. A suitable method is, for example in being a light source under an oblique incidence holographic and based on this holo to produce a stamp in a known manner len. Embossed the surface of a metallized art Stoffadens with such a stamp, it results in Principle an image of the previously recorded topography, that is, one defined at a certain angle light source. This means that incident light radiate the surface of the film under a defined Leave angle and thus the effects described above generate te.  

It is necessary to make such a recording agile, on the geometry of the usual photocopiers To be considerate. The arrangement of the Light source, generally an elongated gas discharge tube, in the manufacture of the die to consider. It should also be borne in mind that is not guaranteed from the outset in which Orientation, the original is placed in the copier becomes. Therefore, two types of imprint are generally required be agile, which from two different originals must emerge. In the first case, the light reflection beam of light took the thread in the previously described Leave way when the light source or light tube is parallel to the thread, but in the second case, when the light source is perpendicular to the thread. In order to it is guaranteed that occur among practically everyone the disturbing effects in the copied Copy will appear.

In another form of training, the figure used topography also in a ring-shaped Light source exist, which then depends on the loading traditional device on the thread the previously described Flashes of light can be seen. Furthermore, such a thread also leads to ring-shaped glare of the original to be reproduced in an calculable Ab stood from the position of the security thread.

Basically, it is not a condition, the described To create structures in a holographic way. It is just as conceivable, corresponding structures in a rake system to calculate, optimize and finally in Store memory. From the stored information can then, for example, by exposure to laser light expose a photoresist, which then to the Her the necessary embossing stamps can be used can.

Claims (5)

1. Security paper with at least at one point on a surface of the paper security element in the form of light-deflecting structures, characterized in that the light-deflecting structures emit incident light at a defined solid angle into the environment in such a way that when the security paper is reproduced in a Copier device, the deflected light causes an overexposure in an area of the copy that lie outside the imaging area of the security element.
2. Security paper according to claim 1, characterized ge indicates that the security element one embedded in the paper at predetermined but security thread emerging to the surface.
3. Security paper according to claim 1 or 2, characterized characterized that the structures light are distracting structures and in particular a hologram represent.
4. Security paper according to claim 3, characterized ge indicates that the hologram is the holo graphic representation of a light source, in particular one annular light source.
5. Security paper according to one or more of the above forthcoming claims, characterized net that several areas with light-deflecting structure doors are provided, which in each case the incident light bend because of different directions.
DE3843076A 1988-12-21 1988-12-21 Security element to protect documents against unauthorized reproduction Ceased DE3843076A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3843076A DE3843076A1 (en) 1988-12-21 1988-12-21 Security element to protect documents against unauthorized reproduction

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3843076A DE3843076A1 (en) 1988-12-21 1988-12-21 Security element to protect documents against unauthorized reproduction
DE1989508323 DE58908323D1 (en) 1988-12-21 1989-12-20 Security element to protect documents against unauthorized reproduction.
EP89123585A EP0377167B1 (en) 1988-12-21 1989-12-20 Safety element to protect documents against unauthorized reproduction
AT89123585T AT111171T (en) 1988-12-21 1989-12-20 Security element to protect documents against unauthorized reproduction.

Publications (1)

Publication Number Publication Date
DE3843076A1 true DE3843076A1 (en) 1990-07-05

Family

ID=6369747

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3843076A Ceased DE3843076A1 (en) 1988-12-21 1988-12-21 Security element to protect documents against unauthorized reproduction

Country Status (3)

Country Link
EP (1) EP0377167B1 (en)
AT (1) AT111171T (en)
DE (1) DE3843076A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011006640A2 (en) 2009-07-14 2011-01-20 Human Bios Gmbh Security element for marking or identifying objects and living beings
DE102013219591A1 (en) 2013-09-27 2015-04-16 Albert-Ludwigs-Universität Freiburg Method for authenticating microelectronic components

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537486A (en) * 1990-11-13 1996-07-16 Empire Blue Cross/Blue Shield High-speed document verification system
DE4041267A1 (en) * 1990-12-21 1992-06-25 Gao Ges Automation Org Application of security strip to paper - in which security element wound right side up on bobbin with mechanical non-twist feed to fourdrinier of paper-making machine
FR2677676B1 (en) * 1991-06-12 1997-02-14

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887742A (en) * 1972-04-13 1975-06-03 Richard E Reinnagel Copy resistant documents
DE2555214A1 (en) * 1975-11-17 1977-06-02 Landis & Gyr Ag document
GB2103669A (en) * 1981-06-03 1983-02-23 Crane Co Identifiable papers for example banknoted and methods and apparatus for producing them
EP0059056B1 (en) * 1981-02-19 1985-05-02 Portals Limited Method for making a fibrous sheet
EP0070172B1 (en) * 1981-07-13 1985-08-14 Portals Limited Paper incorporating a partially embedded strip, methods for making paper and security documents
EP0229645A1 (en) * 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Process for producing an antifalsification paper with an incorporated security element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832445A (en) * 1986-05-16 1989-05-23 American Bank Note Holographics, Inc. Security diffraction devices difficult to exactly duplicate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887742A (en) * 1972-04-13 1975-06-03 Richard E Reinnagel Copy resistant documents
DE2555214A1 (en) * 1975-11-17 1977-06-02 Landis & Gyr Ag document
EP0059056B1 (en) * 1981-02-19 1985-05-02 Portals Limited Method for making a fibrous sheet
GB2103669A (en) * 1981-06-03 1983-02-23 Crane Co Identifiable papers for example banknoted and methods and apparatus for producing them
US4437935A (en) * 1981-06-03 1984-03-20 Crane And Company Method and apparatus for providing security features in paper
EP0070172B1 (en) * 1981-07-13 1985-08-14 Portals Limited Paper incorporating a partially embedded strip, methods for making paper and security documents
EP0229645A1 (en) * 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Process for producing an antifalsification paper with an incorporated security element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011006640A2 (en) 2009-07-14 2011-01-20 Human Bios Gmbh Security element for marking or identifying objects and living beings
DE102009033221A1 (en) 2009-07-14 2011-01-27 Human Bios Gmbh Security element for marking or identification of objects and living beings
US9600951B2 (en) 2009-07-14 2017-03-21 Human Bios Gmbh Security element for marking or identifying objects and living beings
DE102013219591A1 (en) 2013-09-27 2015-04-16 Albert-Ludwigs-Universität Freiburg Method for authenticating microelectronic components

Also Published As

Publication number Publication date
EP0377167B1 (en) 1994-09-07
EP0377167A1 (en) 1990-07-11
AT111171T (en) 1994-09-15

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8125 Change of the main classification

Ipc: B44F 1/12

8131 Rejection