EP0412905B2 - Papier de sécurité - Google Patents
Papier de sécurité Download PDFInfo
- Publication number
- EP0412905B2 EP0412905B2 EP90402264A EP90402264A EP0412905B2 EP 0412905 B2 EP0412905 B2 EP 0412905B2 EP 90402264 A EP90402264 A EP 90402264A EP 90402264 A EP90402264 A EP 90402264A EP 0412905 B2 EP0412905 B2 EP 0412905B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fact
- medium according
- sensitive
- constituted
- layer
- 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.)
- Expired - Lifetime
Links
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/42—Ribbons or strips
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing 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
- G07D7/003—Testing 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
Definitions
- the invention relates to security paper, in particular a bank note paper.
- EP-A-279 880 describes a wire transparent with metallic micro-prints obtained for example by demetallizing areas not protected by varnish. The impressions are barely visible by reflection and more visible by transparency using a magnifying device.
- the invention aims to provide a support comprising a security element betraying falsification.
- Document US-A-4 037 007 describes a security paper with boards comprising a substance capable of taking part to a coloring reaction, and when the document is checked with one or more reagents, the substance changes color. This substance only reacts a colorformer like those used in papers carbonless. It is an authentication process and not a process for betraying falsification.
- Document EP-A-0 319 157 describes a safety wire which is manufactured by metallic deposit on the wire, printing using a resistant varnish and demetallization chemically. Once the wire as well realized, and this thread introduced into the paper, we don't call for demetallization to highlight falsification. The same is true in the documents US-A-4,652,015 and GB-A-2,213,908.
- Document GB-A-1 095 286 describes a microprinted security thread. Some micro-prints may be sensitive to chemical reagents, this sensitivity allowing to appear reversibly in a given color the impressions. This brings an authentication feature more over safety but there is no way highlighting a forgery.
- the wire can be an aluminum sheet complex between two plastic sheets. This thread is clearly visible in the paper.
- Another object of the invention is therefore to provide a support comprising a security element which further retains some detectable security cues after attempting to whiten the surface of the support.
- the invention therefore relates to a security support printable with betraying security features falsification. These security features are as they involve at least hidden means recognition of falsification.
- a printable security support comprising at least one security, arranged at least partially between the faces of the support, characterized by the fact that said security element consists of a support element coated with at least partially of a layer sensitive to falsifying agents, said element security also comprising means for recognizing falsification, consisting of an agent resistant to falsification agents, cooperating with said layer sensitive to falsifying agents so as to be invisible to the naked eye in transparency and in reflection before an attempt at falsification and to become visible after attack of said sensitive layer by said falsifying agent, thus allowing this recognition of falsification, said agent resistant to falsifying agents then possibly giving rise to a design or a model.
- the agent sensitive layer falsification is a layer sensitive to the agents chosen among the group of strong bases or solvents polar.
- the sensitive layer is, for example, a metal layer sensitive to alkalis such as aluminum.
- the resistant agent is, for example, an impression colorless or colored. This impression can be obtained from an ink which may contain a pigment chosen from the group of mineral pigments, organic, metallic. This impression can also be obtained by chemical deposition of a metal inert towards tampering agents.
- the support element is flexible and is made of a material synthetic, for example polyester.
- the security element is constituted a polyester strip comprising on one side a metallic coating with resistant prints to falsifying agents.
- the security element may consist of a polyester strip comprising on one side a metallic coating and on the other face of prints resistant to falsifying agents.
- the security element may consist of a polyester strip comprising on one side an impression not sensitive to polar solvents and on the opposite side or the same side an impression sensitive to polar solvents.
- the support is for example a sheet of paper obtained by the wet method and made up of cellulosic fibers, possibly synthetic fibers, binders, fillers. It can consist of a plastic sheet, possibly coated a layer to improve the impression.
- Figure 1 shows in cross section a security element according to the invention before introduction in the holder.
- Figure 2 shows the appearance of a printed medium on the surface and with a security element of figure 1.
- Figure 3 shows a support according to the figure 2, which was subjected to forgery agents.
- Figures 4A and 4B are top views of the security element according to the invention before and after action of falsifying agents.
- FIG. 5 shows in section another mode of the security element according to the invention.
- the security support 1 is flat and printable. It has a security element 2 which is at least partially between the faces upper and lower of the support 1.
- FIG 1 there is shown a security element 2 which is completely arranged inside the support 1.
- this security element 2 is visible with the naked eye in transparency, i.e. in light transmitted. On the other hand, in reflected light, it is much less visible. So this security element 2 seems identical to a security element of the prior art, namely a covered polyester yarn of a continuous metallic layer. But this security element 2 includes recognition means 3 hidden falsification, these means being reactive to falsifying agents.
- the support 1 having on the surface impressions 3 which indicate for example the value 4 of the cutoff.
- the element safety 2 is an element, for example a wire or a fiber, or a confetti, or a coated board a layer sensitive to falsifying agents and provided at least partially with a protective agent the sensitive layer, this agent being resistant to falsifying agents.
- the skilled person is capable, knowing falsifying agents, to choose a sensitive layer agents and a protective agent resistant to same agents. So if the falsifying agents are basics, those skilled in the art may choose to coating the element (wire, fiber, confetti) with a dissolving metal to the bases and to provide the element with a layer partial or total of a base resistant varnish.
- An exemplary embodiment is to coat a wire of polyester 5 (figure 1) with a layer 6 of aluminum and to print using a colorless varnish 7 above of the aluminum layer, this varnish being resistant at the bases, we get a dark wire 8 as in the figure 4A.
- the paper is then printed on the surface to form, by example, a bank note.
- the counterfeiter will use a basic solution, possibly with detergent solutions, the aluminum layer will be dissolved and as the varnish is resistant at the bases, an impression 9 will appear, which will be visible transparently, while the paper becomes without surface printing.
- the wire will therefore not visible by the counterfeiter (Figure 3), in reflection. Through against, in transparency, the counterfeiter will clearly see an impression (as shown in the figure 4B). For example, if varnish printing forms the word "false”, the infringer will be dissuaded from reprinting the ticket to change its value.
- Another embodiment is to coat a polyester sheet entirely of aluminum, on a face, and completely of varnish on other face, this varnish being resistant to bases and being colored.
- the varnish may include, according to another example, fluorescent dyes, resistant to bases. Thus the boards will appear gray before falsification and fluorescent after falsification.
- the security elements according to the invention are distinguished elements of the prior art. In effect, the latter never use the layer couple sensitive to falsifying agents / resistant agent to falsifying agents.
- Application EP-A- 319 157 describes a wire which may include metallic inks as a print or wire that has been demetallized for example by means of a laser beam. This thread, once introduced into the paper, if it is subjected to a base, loses its metallic impression, but no case, it appears after falsification a means recognition of falsification, this means being invisible before tampering.
- Another embodiment of the invention is the deposit 10 of aluminum on one side of polyester II (figure 5) and chemical deposition (to form a pattern) of a metal resistant to bases, for example nickel.
- a metal resistant to bases for example nickel.
- the security element can be inserted into a support which can be paper containing more or less synthetic or mineral fibers or support may be a sheet of synthetic material printable, such as the POLYART® sold by the plaintiff.
- the printed characters are dried at 130 ° C. These characters are transparent. We thus obtain a solid safety wire, uniform color. This thread is introduced in paper by known techniques.
- a security thread is made as in the example 2 but using an ink consisting of a mixture of two inks: a white ink and a black ink. These inks have the particularity to resist well to chemical attacks. We can add to these inks any other mineral pigment to give them a hue special. Ink color is a function of tint characters that we want so that they become not discernible on the security thread after introduction in the paper. The attempt at falsification, as in the previous examples, will show the text printed as in example 2.
- a safety thread according to the invention is obtained as follows: on one side of a polyester support 23 microns we print by chemical deposition of nickel by the methods known from the prior art (Bayprint process from the company BAYER for example). On the other side, a layer of aluminum is deposited (vacuum aluminization). This thread introduced into the paper seems quite common and does not appear no clue. This thread reacts as in the previous examples, attempts at falsification.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
- Printing Methods (AREA)
- Credit Cards Or The Like (AREA)
Description
- on recouvre une feuille flexible d'une couche métallique, par exemple de l'aluminium,
- on realise un impression sur une des faces de la feuille flexible à l'aide d'une encre résistant aux agents de falsification, ladite impression étant invisible par rapport à la couche métallicue.
- on coupe la feuille flexible ainsi revêtue et imprimée, pour réaliser des fibres, des fils continus ou des planchettes,
- on introduit les fibres, fils ou planchettes ainsi obtenus au moins partiellement à l'intérieur d'un support imprimable.
- on recouvre une feuille flexible d'une couche métallique, par exemple de l'aluminium,
- on réalise une impression par dépôt chimique d'un métal, par exemple le nickel, sur l'une des faces de la feuille flexible, ladite impression étant invisible par rapport à la couche métallique,
- on coupe la feuille flexible ainsi revêtue et imprimée, pour réaliser des fibres, des fils continus ou des planchettes,
- on introduit les fibres, fils ou planchetes ainsi obtenues au moins partiellement à l'intérieur d'un support imprimable.
- Résine Synolite 595 100 parties
- Terbutylperoxybenzoate 1 partie
- Résine Synolite 595 100 parties
- Terbutylperoxybenzoate 1 partie
- Iriodine 100 (MERCK) 50 parties
- Vernis vinylique = 100 parties
- Bleu manolex = 10 parties
Claims (14)
- Support de sécurité imprimable comportant au moins un élément de sécurité, disposé au moins partiellement entre les faces du support, caractérisé par le fait que ledit élément de sécurité est constitué d'un élément support revêtu au moins partiellement d'une couche sensible aux agents de falsification, ledit élément de sécurité comportant également des moyens de reconnaissance de la falsification, constitués d'un agent résistant aux agents de falsification, coopérant avec ladite couche sensible aux agents de falsification de manière à être invisible à l'oeil nu en transparence et en réfléxion avant une tentative de falsification et à devenir visibles après attaque de ladite couche sensible par ledit agent de falsification, permettant ainsi cette reconnaissance de la falsification, ledit agent résistant aux agents de falsification donnant alors éventuellement naissance à un dessin ou un modèle.
- Support selon la revendication 1, caractérisé par le fait que la couche sensible aux agents de falsification est une couche sensible aux agents choisis parmi le groupe des bases fortes, des solvants polaires.
- Support selon l'une des revendications 1 et 2, caractérisé par le fait que la couche sensible est une couche de métal sensible aux bases.
- Support selon l'une des revendications 1 à 3, caractérisé par le fait que l'agent résistant est une impression incolore, de couleur ou fluorescente.
- Support selon la revendication 4, caractérisé par le fait que l'encre d'impression contient un pigment choisi dans le groupe des pigments minéraux, organiques, métalliques.
- Support selon l'une des revendications 1 à 5, caractérisé par le fait que l'élément support est flexible et est constitué d'une matière synthétique.
- Support selon la revendication 6, caractérisé par le fait que l'élément support flexible est constitué de polyester.
- Support selon l'une des revendications 1 à 7, caractérisé par le fait que l'élément de sécurité est constitué d'une bande de polyester comportant sur une face un revêtement métallique sensible aux bases, muni d'impressions résistant aux agents de falsification.
- Support selon l'une des revendications 1 à 7, caractérisé par le fait que l'élément de sécurité est constitué d'une bande de polyester comportant sur une face un revêtement métallique sensible aux bases et sur l'autre face des impressions résistant aux agents de falsification.
- Support selon l'une des revendications 1 à 7, caractérisé par le fait que l'élément de sécurité est constitué d'une bande de polyester comportant sur une face une impression non sensible aux solvants polaires et sur la face opposée ou la même face une impression sensible aux solvants polaires.
- Support selon l'une des revendications 1 à 10, caractérisé par le fait qu'il est constitué d'une feuille de polyester obtenue par voie humide et constituée de fibres cellulosiques, éventuellement des fibres synthétiques, des liants, des charges.
- Support selon l'une des revendications 1 à 10, caractérisé par le fait qu'il est constitué d'une feuille de matière synthétique, éventuellement revêtue d'une couche pour améliorer l'impression.
- Procédé de fabrication d'un support selon l'une des revendications 1 à 12, caractérisé par le fait que:on recouvre une feuille flexible d'une couche métallique sensible aux bases,on réalise une impression sur une des faces de la feuille flexible à l'aide d'une encre résistant aux agents de falsification, ladite impression étant invisible par rapport à la couche métallique,on coupe la feuille flexible ainsi revêtue et imprimée, pour réaliser des fibres, des fils continus ou des planchettes,on introduit les fibres, fils ou planchettes ainsi obtenus au moins partiellement à l'intérieur d'un support imprimable.
- Procédé de fabrication d'un support selon l'une des revendications 1 à 12, caractérisé par le fait que:on recouvre une feuille flexible d'une couche métallique sensible aux bases,on réalise une impression par dépôt chimique de nickel sur l'une des faces de la feuille flexible, ladite impression étant invisible par rapport à la couche métallique,on coupe la feuille flexible ainsi revêtue et imprimée, pour réaliser des fibres, des fils continus ou des planchettes,on introduit les fibres, fils ou planchettes ainsi obtenus au moins partiellement à l'intérieur d'un support imprimable.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8910826 | 1989-08-11 | ||
FR8910826 | 1989-08-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0412905A1 EP0412905A1 (fr) | 1991-02-13 |
EP0412905B1 EP0412905B1 (fr) | 1994-01-12 |
EP0412905B2 true EP0412905B2 (fr) | 2000-01-05 |
Family
ID=9384666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90402264A Expired - Lifetime EP0412905B2 (fr) | 1989-08-11 | 1990-08-08 | Papier de sécurité |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0412905B2 (fr) |
DE (1) | DE69005943T3 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2627822A2 (fr) * | 2010-10-13 | 2013-08-21 | D.W. Spinks (Embossing) Limited | Motif de contrôle pour un papier de sécurité |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3802724A (en) * | 1972-09-11 | 1974-04-09 | Burroughs Corp | Protection system for computerized negotiable document printouts |
GB1525383A (en) * | 1974-08-02 | 1978-09-20 | Portals Ltd | Paper for printed sheets |
US4652015A (en) * | 1985-12-05 | 1987-03-24 | Crane Company | Security paper for currency and banknotes |
IN173621B (fr) * | 1987-12-04 | 1994-06-18 | Portals Ltd |
-
1990
- 1990-08-08 EP EP90402264A patent/EP0412905B2/fr not_active Expired - Lifetime
- 1990-08-08 DE DE69005943T patent/DE69005943T3/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0412905A1 (fr) | 1991-02-13 |
DE69005943T3 (de) | 2000-08-03 |
EP0412905B1 (fr) | 1994-01-12 |
DE69005943T2 (de) | 1994-08-04 |
DE69005943D1 (de) | 1994-02-24 |
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