EP0378029A2 - Non-forgeable and non-fluorescent security paper, and document obtained - Google Patents
Non-forgeable and non-fluorescent security paper, and document obtained Download PDFInfo
- Publication number
- EP0378029A2 EP0378029A2 EP89420481A EP89420481A EP0378029A2 EP 0378029 A2 EP0378029 A2 EP 0378029A2 EP 89420481 A EP89420481 A EP 89420481A EP 89420481 A EP89420481 A EP 89420481A EP 0378029 A2 EP0378029 A2 EP 0378029A2
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- European Patent Office
- Prior art keywords
- cobalt
- paper
- paper according
- salt
- reactant
- 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.)
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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
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/916—Fraud or tamper detecting
Definitions
- the present invention relates to the field of stationery and it relates to a security paper having a sensitivity to chemical agents which can be used to falsify inked prints by chemically bleaching the inks.
- the present invention relates, more specifically, to the field of security papers which can be used for the production of handwritten payment documents and official documents which must be protected against any attempt at falsification using chemical reagent.
- the present invention aims to provide a new security paper which meets better than hitherto the various requirements charged to a tamper-proof security paper and which can be easily manufactured using traditional methods and at an attractive cost price.
- the object of the invention is to provide a tamper-proof security paper having no significant residual coloration or fluorescence, capable of reacting to reducing chemical agents, to the pair of oxidizing-reducing agents, as well as to erasing felts , with a sufficiently high sensitivity to meet the severe tests in this area.
- Another object of the invention is to provide a tamper-proof security paper having, after treatment, a clear white coloration which does not undergo any appreciable modification in the usual storage time at the user.
- Another object of the invention is to provide a tamper-proof security paper whose reaction sensitivity to the pair of oxidizing-reducing agents is improved.
- the tamper-proof security paper according to the invention is characterized by the presence, on its surface and / or in its mass, of a soluble or partially soluble salt in the aqueous phase of cobalt II or III.
- the soluble cobalt salt can therefore be supplied in several ways, for example: - by coating according to known methods, - by adding to the mass, - or even by impregnation.
- cobalt salts which are particularly suitable, mention should be made of those which are preferred: - cobalt sulfate II heptahydrate, - cobalt acetate II - cobalt II nitrate, - cobalt II chloride, - cobalt III acetylacetonate.
- the amount of cobalt salt to be provided depends essentially on the color desired in reaction. It appears that a contribution, starting from 0.2% by dry weight relative to the weight of paper, already makes it possible to produce, in the presence of a reactive chemical agent, a coloration allowing observation with the naked eye.
- cobalt salt in order to reinforce the sensitivity to the oxidizing-reducing couple, provision is made to combine with the cobalt salt, at least partially soluble in the aqueous phase, one or more co-reactants or sensitizing agents, of reducing nature, among which those of phenolic structure are preferred.
- the amount of co-reactant can vary from 0.5% by dry weight relative to the weight of paper, depending on the reactive coloration sought, in particular its density up to a defined maximum quantity, as is known from skilled in the art, to take into account the cost of production, while respecting, preferably, the white background color of the paper.
- compositions for treating a paper of unfalsifiable check type with a grammage of 95 g / m2 and a basic white color containing or not the usual adjuvants and additives, in particular in the field of tamper-proof security papers.
- the paper support is treated on the surface with a solution comprising, per liter of water: - Cobalt II sulfate heptahydrate 30g - Hydroquinone 20g - Starch 200g
- the take of bath is approximately 40% compared to the weight of paper which is dried in a traditional way.
- Such a paper has a reactive yellow-orange coloration after bringing into contact the oxidizing-reducing couple potassium permanganate - sodium bisulfite according to, for example, an immersion of 15 seconds in a 50 g / l solution of potassium permanganate, followed about one minute of draining, after which the paper is immersed in a solution of 10-15 g / l of sodium bisulfite before being dried in the open air.
- a paper such as above, also exhibits an orange colored reaction in the presence of reducing agents alone, such as bisulfite in aqueous solution, neutral sulfite, in the presence of ink erasing felts, a beige greenish colored reaction in presence of sodium hypochlorite and a brown reaction in the presence of strong basic agents, such as soda or sodium carbonate.
- reducing agents such as bisulfite in aqueous solution, neutral sulfite
- a coating solution is deposited on the surface comprising, per liter of water: - Cobalt acetate 20g - Phloroglucinol 5 g - Starch 200g
- the non-fluorescent white paper obtained reacts, in the presence of chemical agents described in the previous example, developing the same colors.
- the coating solution comprising, per liter of water: - Cobalt II nitrate 15g - Resorcinol 20g - Manganese sulfate 10g - Starch 150g
- the non-fluorescent white paper obtained reacts with the oxidizing-reducing couple, with the reducing agents, with the erasing felts, giving a yellow-orange coloration clearly visible on the paper. With sodium hypochlorite and bases, an intense brown color is formed.
- the coating solution comprising, per liter of water: - Cobalt chloride II 25g - Hydroquinone 20g - Starch 100g
- the whiteness and reactivity of the final product are identical to that of Example 5.
- the invention also encompasses any colored paper and not fundamentally white and treated to contain in mass or on the surface a soluble salt of cobalt.
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- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Paper (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
La présente invention est relative au domaine de la papeterie et elle a pour objet un papier de sécurité présentant une sensibilité aux agents chimiques pouvant être utilisés pour falsifier les impressions encrées en décolorant chimiquement les encres.The present invention relates to the field of stationery and it relates to a security paper having a sensitivity to chemical agents which can be used to falsify inked prints by chemically bleaching the inks.
La présente invention vise, plus spécialement, le domaine des papiers de sécurité utilisables pour la réalisation de pièces de paiement manuscrites et de documents officiels qui doivent être protégés contre toute tentative de falsification à l'aide de réactif chimique.The present invention relates, more specifically, to the field of security papers which can be used for the production of handwritten payment documents and official documents which must be protected against any attempt at falsification using chemical reagent.
On a déjà proposé des papiers de sécurité comportant des réactifs chimiques aux agents oxydants réducteurs utilisés dans des produits effaceurs, tels que ceux commercialisés sous le nom de "CORECTOR" ou encore "SLOAN'S". De tels papiers fluorescents développent, généralement, au contact de ces produits oxydants-réducteurs, une coloration souvent faible, peu ou mal visible à l'oeil nu, mais représentant, par contre, une gêne pour certaines utilisations dans lesquelles, notamment, la non fluorescence du papier est, au contraire, recherchée, par exemple en tant que moyen de contrôle.Security papers have already been proposed comprising chemical reagents with reducing oxidizing agents used in erasers, such as those marketed under the name of "CORECTOR" or "SLOAN'S". Such fluorescent papers generally develop, in contact with these oxidizing-reducing products, an often weak coloration, little or poorly visible to the naked eye, but representing, on the other hand, discomfort for certain uses in which, in particular, the non Paper fluorescence is, on the contrary, sought after, for example as a means of control.
On connaît aussi un papier contenant des réactifs chimiques aux acides, aux alcalis, aux réactifs décolorants chlorés, aux crayons effaceurs d'encres. Il convient de citer, notamment, l'enseignement fourni par les brevets FR 2 365 656, FR 2 399 505 et FR 2 402 739. Des papiers ainsi traités ne fournissent pas une réaction colorée convenablement distincte.Also known is a paper containing chemical reagents to acids, alkalis, chlorinated bleaching reagents, ink erasing pencils. Mention should be made, in particular, of the teaching provided by the patents FR 2 365 656, FR 2 399 505 and FR 2 402 739. Papers thus treated do not provide a suitably distinct color reaction.
Une autre proposition a aussi été faite par le brevet FR 2 580 303 prévoyant l'incorporation de fer III et d'un agent stabilisateur donnant un complexe coloré avec le fer II. La méthode préconisée est de mise en oeuvre délicate, implique la fourniture de produits de prix élevé et conduit à un papier présentant initialement une coloration de fond ayant, de surcroît, tendance à s'accentuer par vieillissement. Un papier selon une telle proposition présente, de plus, une réactivité limitée au couple oxydant-réducteur, ce qui réduit ses caractéristiques d'infalsifiabilité.Another proposal was also made by patent FR 2 580 303 providing for the incorporation of iron III and of a stabilizing agent giving a colored complex with iron II. The recommended method is delicate to implement, involves the supply of high-priced products and leads to a paper initially presenting a background coloring which, moreover, tends to become accentuated by aging. A paper according to a such a proposal has, moreover, a reactivity limited to the oxidizing-reducing couple, which reduces its characteristics of unfalsifiability.
La présente invention vise à proposer un nouveau papier de sécurité qui réponde mieux que jusqu'à présent aux différentes exigences portées au compte d'un papier de sécurité infalsifiable et qui puisse être fabriqué aisément selon des méthodes traditionnelles et à un prix de revient intéressant.The present invention aims to provide a new security paper which meets better than hitherto the various requirements charged to a tamper-proof security paper and which can be easily manufactured using traditional methods and at an attractive cost price.
L'objet de l'invention est de fournir un papier de sécurité infalsifiable ne présentant pas de coloration résiduelle notable, ni de fluorescence, capable de réaction aux agents chimiques réducteurs, au couple d'agents oxydant-réducteur, ainsi qu'aux feutres effaceurs, avec une sensibilité suffisamment élevée pour satisfaire aux tests sévères en la matière.The object of the invention is to provide a tamper-proof security paper having no significant residual coloration or fluorescence, capable of reacting to reducing chemical agents, to the pair of oxidizing-reducing agents, as well as to erasing felts , with a sufficiently high sensitivity to meet the severe tests in this area.
Un autre objet de l'invention est de fournir un papier de sécurité infalsifiable présentant, après traitement, une coloration blanche nette ne subissant pas de modification sensible dans le temps habituel de stockage chez l'utilisateur.Another object of the invention is to provide a tamper-proof security paper having, after treatment, a clear white coloration which does not undergo any appreciable modification in the usual storage time at the user.
Un autre objet de l'invention est de proposer un papier de sécurité infalsifiable dont la sensibilité de réaction au couple d'agents oxydant-réducteur est améliorée.Another object of the invention is to provide a tamper-proof security paper whose reaction sensitivity to the pair of oxidizing-reducing agents is improved.
Pour atteindre les buts ci-dessus, le papier de sécurité infalsifiable selon l'invention se caractérise par la présence, à sa surface et/ou dans sa masse, d'un sel soluble ou partiellement soluble en phase aqueuse de cobalt II ou III. Le sel soluble de cobalt peut donc être apporté de plusieurs façons, par exemple :
- par couchage selon les méthodes connues,
- par apport dans la masse,
- voire par imprégnation.To achieve the above goals, the tamper-proof security paper according to the invention is characterized by the presence, on its surface and / or in its mass, of a soluble or partially soluble salt in the aqueous phase of cobalt II or III. The soluble cobalt salt can therefore be supplied in several ways, for example:
- by coating according to known methods,
- by adding to the mass,
- or even by impregnation.
Par papier, il convient de considérer tout substrat ayant une composition à base de fibres cellulosiques et/ou synthétiques, sans exclure les supports constitués par un film et comportant ou non les adjuvants classiques de papeterie.By paper, it is advisable to consider any substrate having a composition based on cellulosic and / or synthetic fibers, without excluding the supports constituted by a film and comprising or not the conventional additives of stationery.
Parmi les sels de cobalt convenant particulièrement bien, il faut citer ceux préférés qui sont :
- le sulfate de cobalt II heptahydraté,
- l'acétate de cobalt II
- le nitrate de cobalt II,
- le chlorure de cobalt II,
- l'acétylacétonate de cobalt III.Among the cobalt salts which are particularly suitable, mention should be made of those which are preferred:
- cobalt sulfate II heptahydrate,
- cobalt acetate II
- cobalt II nitrate,
- cobalt II chloride,
- cobalt III acetylacetonate.
La quantité de sel de cobalt devant être apportée dépend, essentiellement, de la coloration souhaitée en réaction. Il apparaît qu'un apport, à partir de 0,2 % en poids sec par rapport au poids de papier, permet déjà de produire, en présence d'un agent chimique réactif, une coloration permettant une observation à l'oeil nu.The amount of cobalt salt to be provided depends essentially on the color desired in reaction. It appears that a contribution, starting from 0.2% by dry weight relative to the weight of paper, already makes it possible to produce, in the presence of a reactive chemical agent, a coloration allowing observation with the naked eye.
Industriellement on emploie entre 0,5 et 1 %, couramment 0,6 % en poids sec de sel de cobalt par rapport au poids de papier.Industrially, between 0.5 and 1% is used, commonly 0.6% by dry weight of cobalt salt relative to the weight of paper.
On donne ci-après deux exemples illustrant deux procédés de traitement d'un papier de type chèque infalsifiable, d'un grammage égal à 95 g/m² et de couleur fondamentale blanche.Two examples are given below illustrating two methods of processing a paper of the unforgeable form, with a grammage equal to 95 g / m² and of fundamental white color.
Sur un tel papier non traité est déposée, par enduction en surface, une solution comprenant, par litre d'eau :
Le papier blanc ainsi traité, non fluorescent, réagit en développant une coloration orangée avec les agents chimiques réducteurs, le sulfite, le bisulfite de sodium et les feutres effaceurs d'encres et une coloration verdâtre-beige avec l'hypochlorite de soude.On such untreated paper is deposited, by surface coating, a solution comprising, per liter of water:
The white paper thus treated, non-fluorescent, reacts by developing an orange coloration with the reducing chemical agents, the sulphite, the sodium bisulphite and the ink erasing felts and a greenish-beige coloration with the sodium hypochlorite.
Sur un support papier de même type est déposée, en surface par enduction à raison de 40g/m², une solution comprenant, par litre d'eau :
- orangée avec les agents réducteurs, le sulfite de sodium, le bisulfite de sodium et les feutres effaceurs d'encres,
- brune avec l'hypochlorite de sodium et les bases.On a paper support of the same type is deposited, on the surface by coating at a rate of 40 g / m², a solution comprising, per liter of water:
- orange with reducing agents, sodium sulfite, sodium bisulfite and ink erasing felts,
- brown with sodium hypochlorite and bases.
Selon un développement de l'invention, pour renforcer la sensibilité au couple oxydant-réducteur, il est prévu d'associer au sel de cobalt, au moins partiellement soluble en phase aqueuse, un ou plusieurs coréactants ou agents sensibilisateurs, de caractère réducteur, parmi lesquels ceux de structure phénolique sont préférés.According to a development of the invention, in order to reinforce the sensitivity to the oxidizing-reducing couple, provision is made to combine with the cobalt salt, at least partially soluble in the aqueous phase, one or more co-reactants or sensitizing agents, of reducing nature, among which those of phenolic structure are preferred.
Parmi ces coréactants, on préfère employer ceux répondant à la structure :
- R₁ = H, NH₂, OCH₃, COOH, SO₃H, CH₃, COOR (avec R représentant un radical aromatique ou aliphatique substitué ou non),
- R₂ = H, CH₃, OCH₃, COOH, NH₂, SO₃H.Among these co-reactants, we prefer to use those corresponding to the structure:
- R₁ = H, NH₂, OCH₃, COOH, SO₃H, CH₃, COOR (with R representing an aromatic or aliphatic radical substituted or not),
- R₂ = H, CH₃, OCH₃, COOH, NH₂, SO₃H.
Des exemples significatifs et intéressants sont les suivants :
La quantité de coréactant peut varier à partir de 0,5 % en poids sec par rapport au poids de papier, en fonction de la coloration réactive recherchée, notamment de sa densité jusqu'à une quantité maximale définie, comme cela est connu par l'homme de l'art, pour tenir compte du coût de production, tout en respectant, de préférence, la couleur de fond blanche du papier.The amount of co-reactant can vary from 0.5% by dry weight relative to the weight of paper, depending on the reactive coloration sought, in particular its density up to a defined maximum quantity, as is known from skilled in the art, to take into account the cost of production, while respecting, preferably, the white background color of the paper.
Industriellement, on introduit couramment 1 % en poids sec de sel de cobalt et 0,8 % de coréactant par rapport au poids de papier, pour obtenir un écart entre le fond papier et la coloration réactive avec l'un des réactifs suivants, sulfite de sodium, couple oxydant-réducteur, javel, au moins égal à 10 unités évaluées dans le système L.a.b. établi par la Commission Internationale de l'Eclairage en 1976.Industrially, 1% by dry weight of cobalt salt and 0.8% of co-reactant relative to the weight of paper are commonly introduced, in order to obtain a difference between the paper background and the reactive coloring with one of the following reagents, sulfite of sodium, oxidizing-reducing couple, bleach, at least equal to 10 units evaluated in the Lab system established by the International Commission on Lighting in 1976.
On donne, ci-après, quelques exemples de compositions de traitement d'un papier de type chèque infalsifiable de grammage 95 g/m² et de couleur fondamentale blanche, contenant ou non les adjuvants et additifs habituels, notamment dans le domaine des papiers de sécurité infalsifiables.We give below some examples of compositions for treating a paper of unfalsifiable check type with a grammage of 95 g / m² and a basic white color, containing or not the usual adjuvants and additives, in particular in the field of tamper-proof security papers.
Le support papier est traité en surface avec une solution comprenant, par litre d'eau :
Un tel papier présente une coloration réactive jaune-orangée après mise en présence du couple oxydant-réducteur permanganate de potassium - bisulfite de sodium selon, par exemple, une immersion de 15 secondes dans une solution à 50 g/l de permanganate de potassium, suivie d'un égouttage d'une minute environ, après quoi le papier est plongé dans une solution à 10-15 g/l de bisulfite de sodium avant d'être séché à l'air libre.
Un papier, tel que ci-dessus, présente, également, une réaction colorée orangée en présence de réducteurs seuls, tels que le bisulfite en solution aqueuse, le sulfite neutre, en présence de feutres effaceurs d'encres, une réaction colorée verdâtre beige en présence d'hypochlorite de soude et une réaction marron en présence d'agents basiques forts, tels que la soude ou le carbonate de sodium.The paper support is treated on the surface with a solution comprising, per liter of water:
Such a paper has a reactive yellow-orange coloration after bringing into contact the oxidizing-reducing couple potassium permanganate - sodium bisulfite according to, for example, an immersion of 15 seconds in a 50 g / l solution of potassium permanganate, followed about one minute of draining, after which the paper is immersed in a solution of 10-15 g / l of sodium bisulfite before being dried in the open air.
A paper, such as above, also exhibits an orange colored reaction in the presence of reducing agents alone, such as bisulfite in aqueous solution, neutral sulfite, in the presence of ink erasing felts, a beige greenish colored reaction in presence of sodium hypochlorite and a brown reaction in the presence of strong basic agents, such as soda or sodium carbonate.
Sur un support, du même type que celui de l'exemple 1, est déposée, en surface, une solution d'enduction comprenant, par litre d'eau :
Sur un même support papier non traité est déposée, en surface, la solution d'enduction comprenant, par litre d'eau :
Avec l'hypochlorite de sodium et les bases, il se forme une couleur brune intense.On the same untreated paper support is deposited, on the surface, the coating solution comprising, per liter of water:
With sodium hypochlorite and bases, an intense brown color is formed.
Sur un même support papier, contenant en masse des réactifs, tels que sel ferrique et précipité de ferrocyanure de manganèse, un ou plusieurs colorants organosolubles dispersés, et traité par enduction d'une solution identique à celle de l'exemple 1, il est possible d'obtenir, en plus, la réaction avec les acides qui forment sur le papier une teinte bleue et celles avec les solvants qui produisent des colorations variables selon leur nature et selon les colorants organosolubles.On the same paper support, containing by mass reagents, such as ferric salt and manganese ferrocyanide precipitate, one or more dispersed organosoluble dyes, and treated by coating with a solution identical to that of Example 1, it is possible to obtain, in addition, the reaction with the acids which form a blue tint on the paper and those with the solvents which produce colorations which vary according to their nature and according to the organosoluble dyes.
Sur un support papier, fabriqué en milieu neutre, est déposée la solution d'enduction comprenant, par litre d'eau :
En procédant comme à l'exemple 1 et en recyclant dans la masse 5 à 10 % de cassés de productions précédentes, la blancheur et la réactivité du produit final ne sont pas affectées.By proceeding as in Example 1 and by recycling in the mass 5 to 10% of broken products from previous productions, the whiteness and reactivity of the final product are not affected.
En procédant comme à l'exemple 1, mais en remplaçant l'amidon par un alcool polyvinylique en tant que liant de couchage, à raison de 20 g/l de solution, les mêmes colorations sont obtenues sur le papier de sécurité ainsi préparé.By proceeding as in Example 1 , but by replacing the starch with a polyvinyl alcohol as coating binder, at a rate of 20 g / l of solution, the same colorings are obtained on the security paper thus prepared.
Sur un support papier non traité est déposée, en surface, une solution contenant, par litre d'eau :
Il doit être considéré que l'invention englobe, également, tout papier coloré et non fondamentalement blanc et traité pour comporter en masse ou en surface un sel soluble de cobalt.It should be considered that the invention also encompasses any colored paper and not fundamentally white and treated to contain in mass or on the surface a soluble salt of cobalt.
Claims (10)
- sulfate de cobalt II heptahydraté,
- nitrate de cobalt II,
- acétate de cobalt II,
- chlorure de cobalt II,
- acétylacétonate de cobalt III. 5- Paper according to one of claims 1 to 4, characterized in that the soluble cobalt salt is chosen from:
- cobalt II sulfate heptahydrate,
- cobalt II nitrate,
- cobalt II acetate,
- cobalt II chloride,
- cobalt III acetylacetonate.
- n = 1, 2 ou 3,
- R₁ = H, NH₂, OCH₃, COOH, SO₃H, CH₃, COOR (avec R représentant un radical aromatique ou aliphatique substitué ou non), - R₂ = H, CH₃, OCH₃, COOH, NH₂, SO₃H. 7 - Paper according to claim 3, characterized in that the co-reactant is chosen from those corresponding to the following structure:
- n = 1, 2 or 3,
- R₁ = H, NH₂, OCH₃, COOH, SO₃H, CH₃, COOR (with R representing an aromatic or aliphatic radical substituted or not), - R ₂ = H, CH₃, OCH₃, COOH, NH₂, SO₃H.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8816347A FR2639970B1 (en) | 1988-12-07 | 1988-12-07 | NON-FLUORESCENT, NON-FLUORESCENT SECURITY PAPER AND DOCUMENT OBTAINED |
| FR8816347 | 1988-12-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0378029A2 true EP0378029A2 (en) | 1990-07-18 |
| EP0378029A3 EP0378029A3 (en) | 1991-07-10 |
| EP0378029B1 EP0378029B1 (en) | 1993-09-15 |
Family
ID=9372854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89420481A Expired - Lifetime EP0378029B1 (en) | 1988-12-07 | 1989-12-06 | Non-forgeable and non-fluorescent security paper, and document obtained |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5156717A (en) |
| EP (1) | EP0378029B1 (en) |
| DE (1) | DE68909205T2 (en) |
| ES (1) | ES2058586T3 (en) |
| FR (1) | FR2639970B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235157B (en) * | 1989-08-07 | 1993-08-04 | Aussedat Rey Sa | Forgery-proof security paper and a process for its manufacture. |
| EP0632162B1 (en) * | 1993-06-29 | 1999-12-08 | Arjo Wiggins S.A. | Sheet which is non-forgeable by chemical agents, and non-forgeable document made therefrom |
| WO2012101334A1 (en) | 2011-01-25 | 2012-08-02 | Honnorat Recherches & Services | Paper that cannot be forged using solvents |
| WO2013060947A1 (en) | 2011-10-26 | 2013-05-02 | Honnorat Recherches & Services | Security paper that cannot be falsified using redox agents |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998041688A1 (en) * | 1997-03-14 | 1998-09-24 | Georgia-Pacific Corporation, Inc. | Security paper |
| FR2943074B1 (en) * | 2009-03-13 | 2011-05-20 | Arjowiggins Security | LASER MARKABLE SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1804978A (en) * | 1926-03-01 | 1931-05-12 | Genoese John | Safety paper |
| US2005105A (en) * | 1930-06-23 | 1935-06-18 | Milton C Johnson Company | Safety paper |
| FR1509715A (en) * | 1966-02-04 | 1968-01-12 | Inveresk Paper Company Ltd | Security paper |
| FR2620146A1 (en) * | 1987-09-03 | 1989-03-10 | Arjomari Prioux | MEDIUM, PAPER AND SAFETY DOCUMENT AGAINST CHEMICAL FALSIFICATION AND CONTRAFACON |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US673400A (en) * | 1900-05-18 | 1901-05-07 | Ernst Kretschmann | Paper for sympathetic ink. |
| US670511A (en) * | 1900-11-10 | 1901-03-26 | Electrical Inkless Printing Syndicate Ltd | Manufacture of paper. |
| US2075538A (en) * | 1932-08-02 | 1937-03-30 | Milton C Johnson Company | Safety paper |
| DE635442C (en) * | 1934-03-21 | 1936-09-17 | Papierfabrik Spechthausen Akt | Process for the production of security paper |
-
1988
- 1988-12-07 FR FR8816347A patent/FR2639970B1/en not_active Expired - Lifetime
-
1989
- 1989-12-06 DE DE89420481T patent/DE68909205T2/en not_active Expired - Fee Related
- 1989-12-06 US US07/446,586 patent/US5156717A/en not_active Expired - Fee Related
- 1989-12-06 ES ES89420481T patent/ES2058586T3/en not_active Expired - Lifetime
- 1989-12-06 EP EP89420481A patent/EP0378029B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1804978A (en) * | 1926-03-01 | 1931-05-12 | Genoese John | Safety paper |
| US2005105A (en) * | 1930-06-23 | 1935-06-18 | Milton C Johnson Company | Safety paper |
| FR1509715A (en) * | 1966-02-04 | 1968-01-12 | Inveresk Paper Company Ltd | Security paper |
| FR2620146A1 (en) * | 1987-09-03 | 1989-03-10 | Arjomari Prioux | MEDIUM, PAPER AND SAFETY DOCUMENT AGAINST CHEMICAL FALSIFICATION AND CONTRAFACON |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2235157B (en) * | 1989-08-07 | 1993-08-04 | Aussedat Rey Sa | Forgery-proof security paper and a process for its manufacture. |
| EP0632162B1 (en) * | 1993-06-29 | 1999-12-08 | Arjo Wiggins S.A. | Sheet which is non-forgeable by chemical agents, and non-forgeable document made therefrom |
| WO2012101334A1 (en) | 2011-01-25 | 2012-08-02 | Honnorat Recherches & Services | Paper that cannot be forged using solvents |
| US9057159B2 (en) | 2011-01-25 | 2015-06-16 | Honnorat Recherches & Services | Paper that cannot be forged using solvents |
| WO2013060947A1 (en) | 2011-10-26 | 2013-05-02 | Honnorat Recherches & Services | Security paper that cannot be falsified using redox agents |
Also Published As
| Publication number | Publication date |
|---|---|
| US5156717A (en) | 1992-10-20 |
| FR2639970A1 (en) | 1990-06-08 |
| EP0378029A3 (en) | 1991-07-10 |
| DE68909205T2 (en) | 1994-04-07 |
| ES2058586T3 (en) | 1994-11-01 |
| DE68909205D1 (en) | 1993-10-21 |
| EP0378029B1 (en) | 1993-09-15 |
| FR2639970B1 (en) | 1991-09-20 |
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