EP0041024A1 - Security paper for avoiding forgery by employing ball-point pens with erasable ink - Google Patents
Security paper for avoiding forgery by employing ball-point pens with erasable ink Download PDFInfo
- Publication number
- EP0041024A1 EP0041024A1 EP81400825A EP81400825A EP0041024A1 EP 0041024 A1 EP0041024 A1 EP 0041024A1 EP 81400825 A EP81400825 A EP 81400825A EP 81400825 A EP81400825 A EP 81400825A EP 0041024 A1 EP0041024 A1 EP 0041024A1
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- European Patent Office
- Prior art keywords
- layer
- paper
- microcapsules
- weight
- ink
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- 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
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- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
Definitions
- the present invention relates to a new security paper which can be used to prevent forgery when using an erasable ink pen.
- This pen lies in the original composition of its ink specially developed to be able to be erased by conventional mechanical means and more particularly by scrub.
- This new type of easily erasable writing medium represents a definite advantage for current use, but constitutes a danger when it is used to fill in security documents, payment documents: checks or other, all documents in general. likely to be falsified.
- French patent 2,280,154 has already proposed a protection and detection method which consists in using a support covered with a layer.
- the support and the layer having different properties of spectral reflection in the visible, ultraviolet or infrared domains, any alteration of the layer by scratching, or scrubbing, will be detected by an appropriate device.
- the present invention therefore relates to a security paper characterized in that it comprises on at least part of its surface, intended to receive writing, tearable microcapsules containing at least one solvent of the erasable ink.
- microcapsules containing various fluids have been described and used in many technical fields.
- microcapsules will be placed on the surface layer of the paper so as to be effectively torn during writing.
- This surface layer must contain from 30 to 70'70 by weight, relative to the weight of the layer, of microcapsules.
- An insufficient quantity of capsules would not make it possible to sufficiently modify the penetration of the ink into the paper; too large a quantity of capsules would not allow the production of a layer having sufficient mechanical properties.
- the solvents which can be used inside the microcapsules are all the solvents which, in contact with the ink deposited by the pen on the paper, increase the speed of diffusion of the ink inside the paper. Solvents of an aromatic or aliphatic nature or chlorine products or mixtures of these solvents. These solvents may contain a plasticizer such as dioctylphthalate for example.
- the surface layer containing the capsules may cover the whole of one and / or the other side of the paper. This will be the case, for example as described below, when the capsules are integrated into the coating layer (papermaking process) or when a printing process covering the entire surface of the paper is used.
- microcapsule spacer is a product in the form of solid grains (calibrated starch, cellulose powder, etc.) which is mixed with the ingredients forming the coating layer and which in the finished layer disperses between the microcapsules. From 3 to 20% by weight, relative to the weight of the coating layer, of this spacer can be used.
- the other ingredients of the coating layer are known products, in particular a binder, for example starch, PVA, latex, which may be used in an amount of approximately 5 to 20% by weight relative to the weight of the layer, a filler, for example kaolin, carbonate which can be used at a rate of about 15 to 45% by weight relative to the weight of the layer and the various additives known and used for the production of coating layers.
- a binder for example starch, PVA, latex
- a filler for example kaolin, carbonate which can be used at a rate of about 15 to 45% by weight relative to the weight of the layer
- various additives known and used for the production of coating layers are known products, in particular a binder, for example starch, PVA, latex, which may be used in an amount of approximately 5 to 20% by weight relative to the weight of the layer, a filler, for example kaolin, carbonate which can be used at a rate of about 15 to 45% by weight relative to the weight of the layer and the various additives
- the papers according to the invention may also comprise, in their mass and in their coating layer, the known elements which are used or usable to combat counterfeiting.
- the process for carrying out the invention uses any papermaking process which allows the incorporation into the coating layers of microcapsules containing the solvent.
- a layer composed of 10% oxidized starch, 55% capsules containing a solvent of the White-Spirit type with low aromatic contents (such as DILUTINE M5) is deposited, by conventional coating means.
- a solvent of the White-Spirit type with low aromatic contents such as DILUTINE M5
- 12% of calibrated starch serving to distance microcapsules and 23% of kaolin of a coating quality.
- microcapsules are obtained by a known process, the wall being made of a polyurethane.
- These capsules have a diameter of approximately 10 microns.
- the removal required to obtain a good layer according to the invention is approximately 5 to 6 g of layer per square meter.
- the paper thus obtained makes it possible to detect attempts at falsification by scraping or erasing handwritten mentions with an erasable ballpoint pen. Indeed, under the writing pressure the capsules burst and release the solvent. This dilutes the ink, lowers its viscosity, increases its penetration into the support and above all prevents perfect erasure whatever the type of eraser or scraper used. Thus, after an attempt to erase by scrubbing or scraping, there will always remain at least one colored trace of the handwritten mentions due to the penetration of the ink into the support, itself surrounded by a more or less significant colored spot.
- composition of the layer given in Example 1 is used, in which the solvent of the White-Spirit type with low aromatic content is replaced by a solvent of the gasoline type (Essence E from SHELL CHEMISTRY or EXSOL DSP 100-130 from ESSO - CHEMISTRY: boiling point between 100 and 130 ° C).
- Example 2 The composition of the layer given in Example 1 is repeated, in which the capsules containing the solvent of the Nhite-Spirit type with low aromatic content are replaced by a 50/50 mixture of this solvent with di (ethyl ethyl phthalate ). 2 hexyle) (DOP from RHONE POULENC for example).
- Example 1 The composition of the layer given in Example 1 is repeated, in which the 10 micron capsules are replaced by 5 micron diameter capsules containing the same solvent.
- a layer composed of 12% oxidized starch, 46% capsules of 10 micron diameter containing a solvent of the Essence type (Essence E), 9% d is deposited by conventional coating means. calibrated starch and 33% coating kaolin.
- a layer composed of 10% oxidized starch, 11% calibrated starch, 25% kaolin and 54% microcapsules 7 microns in diameter containing a mixture is deposited by conventional coating means.
- a coating layer was deposited at the rate of 5 to 6 g of layer per square meter.
- the behavior of paper, vis-à-vis a writing using erasable ink, is the same as that of the paper described in Example 1.
- composition of the layer given in Example 6 is used using capsules containing a mixture of solvents of the aromatic type (BAYMICRON V.P. FE 2101) 80%, and of the aliphatic type (ISOHEXADECAN BAYER) 20%.
- a layer was deposited at the rate of 6 g / m2.
- the behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
- a layer composed of 9% of a synthetic acrylic binder (ACRONAL S320 from BASF) or based on styrene-butadiene (CA 36034 from BAYER) is deposited by conventional coating means, 23% of kaolin, 12% of calibrated starch and 56% of microcapsules such as those described in Example 6.
- a layer was deposited at the rate of 6 g / m2.
- the behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
- a layer composed of 4.57 of a natural soy protein as a binder is deposited by conventional coating means; PROCOTE 200 LV from PURINA; 24.5% kaolin; 12% of calibrated starch and 59% of microcapsules such as those described in Example 6.
- a coating layer was deposited at a rate of 5 to 6 g / m2.
- the behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
- Example 1 On a mass-bonded support into which the reagents usually introduced in security papers which cannot be forged by chemical agents (dyes for example) have been introduced in mass, the layer given in Example 1 is deposited in which added the reagents usually introduced in a size press (reagents with alkaline agents for example) at the doses necessary to obtain quantities of reagents per square meter identical to those obtained in conventional security papers.
- a size press reagents with alkaline agents for example
- the deposition of 5 to 6 g / m2 of layer makes it possible to obtain a paper which cannot be forged, on the one hand, by acidic, basic, oxidizing, reducing, chemical agents, by oxidizing-reducing couples, by solvents, for the means of classical writing and on the other hand on which the erasable writing means will leave a very visible colored trace after exfoliation or scraping.
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- Paper (AREA)
- Color Printing (AREA)
Abstract
Description
La présente invention concerne un nouveau papier de sécurité utilisable pour éviter les falsifications en cas d'utilisation d'un stylo à encre effaçable.The present invention relates to a new security paper which can be used to prevent forgery when using an erasable ink pen.
On a récemment commercialisé un nouveau stylo à bille à encre effaçable décrit notamment dans le brevet des Etats-Unis d'Amérique 4 097 290.Recently, a new erasable ink ballpoint pen described in particular in United States patent 4,097,290 has been marketed.
La particularité de ce stylo réside dans la composition originale de son encre spécialement mise au point pour pouvoir s'effacer par des moyens mécaniques classiques et plus particulièrement par gommage. Ce nouveau type de moyen d'écriture effaçable facilement, représente un avantage certain pour l'usage courant, mais constitue un danger lorsqu'il est utilisé pour remplir des documents de sécurité, des titres de paiement : chèques ou autres, toutes pièces en général susceptibles d'être falsifiées.The particularity of this pen lies in the original composition of its ink specially developed to be able to be erased by conventional mechanical means and more particularly by scrub. This new type of easily erasable writing medium represents a definite advantage for current use, but constitutes a danger when it is used to fill in security documents, payment documents: checks or other, all documents in general. likely to be falsified.
Il est donc utile de disposer d'un papier, utilisable notamment pour les titres de paiement qui empêche la possibilité de falsification lorsqu'on utilise un nouveau stylo tel que décrit ci-dessus.It is therefore useful to have a paper, usable in particular for payment vouchers which prevents the possibility of falsification when using a new pen as described above.
On a déjà proposé dans le brevet français 2 280 154 un procédé de protection et de détection qui consiste à utiliser un support recouvert d'une couche. Le support et la couche possédant des propriétés différentes de réflexion spectrale dans les domaines visibles, ultraviolet ou infrarouge, toute altération de la couche par grattage, ou gommage, sera décelée par un appareil approprié.French patent 2,280,154 has already proposed a protection and detection method which consists in using a support covered with a layer. The support and the layer having different properties of spectral reflection in the visible, ultraviolet or infrared domains, any alteration of the layer by scratching, or scrubbing, will be detected by an appropriate device.
Cette solution est valable pour lutter contre l'effacement de moyens d'écriture difficilement effaçables tels que les stylos à bille classiques, les crayons-feutres, etc., mais s'est révélée inutilisable pour lutter contre d'éventuelles falsifications, par gommage, lors de l'utilisation des stylos à encre effaçable tels que décrits dans le brevet des Etats-Unis d'Amérique 4 097 290.This solution is valid for combating the erasure of writing means which are difficult to erase such as conventional ballpoint pens, felt-tip pens, etc., but has proved unusable for combating possible falsifications, by erasing, when using erasable ink pens as described in U.S. Patent 4,097,290.
On a par ailleurs décrit, dans le brevet des Etats-Unis d'Amérique 4 143 891, un moyen pour rendre infalsifiable un document se présentant sous forme d'une liasse. Ce moyen consiste à combiner les propriétés d'une cire colorèe transférable, située au verso d'une feuille, avec celles de l'acide oléique déposé , dans des microcapsules, sur la recto de la feuille sur laquelle ladite cire est transférée. Cette technique ne peut être directement transposée pour résoudre le problème posé par l'utilisation d'une encre effaçable telle que préconisée dans le brevet des Etats-Unis d'Amérique 4 097 290.Furthermore, in the United States patent 4,143,891, a means has been described for making a document which is in the form of a bundle unforgeable. This means consists in combining the properties of a transferable colored wax, located on the back of a sheet, with those of the deposited oleic acid, in microcapsules, on the front of the sheet onto which said wax is transferred. This technique cannot be directly transposed to solve the problem posed by the use of an erasable ink as recommended in the patent of the United States of America 4,097,290.
Il a été trouvé, et c'est là l'objet de la présente invention, que l'on peut empêcher toute falsification d'un papier, écrit en utilisant un instrument à encre effaçable telle que décrite dans le brevet des Etats-Unis d'Amérique 4 097 290, en disposant à la surface dudit papier des microcapsules contenant un solvant convenable de ladite encre, ces microcapsules étant déchirées lorsque l'on écrit sur ledit papier.It has been found, and this is the object of the present invention, that it is possible to prevent any falsification of a paper, written using an erasable ink instrument as described in the United States patent. America 4097 290, by disposing on the surface of said paper microcapsules containing a suitable solvent for said ink, these microcapsules being torn when writing on said paper.
La présente invention concerne donc un papier de sécurité caractérisé en ce qu'il comporte sur au moins une partie de sa surface,destinée à recevoir l'écriture, des microcapsules déchirables contenant au moins un solvant de l'encre effaçable.The present invention therefore relates to a security paper characterized in that it comprises on at least part of its surface, intended to receive writing, tearable microcapsules containing at least one solvent of the erasable ink.
Les microcapsules contenant des fluides divers ont été décrites et utilisées dans de nombreux domaines techniques. On pourra dans la présente invention employer une quelconque des méthodes connues pour réaliser ces capsules ; il suffira de faire en sorte, et les techniciens feront les tests nécessaires, d'être sûr qu'avec les stylos à encre effaçable utilisés la pointe (ou la plume) dudit stylo déchire effectivement lesdites microcapsules lors de l'écriture.The microcapsules containing various fluids have been described and used in many technical fields. In the present invention, it is possible to use any of the known methods for producing these capsules; it will suffice to make sure, and the technicians will make the necessary tests, to be sure that with the erasable ink pens used the tip (or the nib) of said pen actually tears said microcapsules during writing.
Ces microcapsules seront disposées sur la couche superficielle du papier de façon à être effectivement déchirées lors de l'écriture. Cette couche superficielle devra contenir de 30 à 70'70 en poids, par rapport au poids de la couche, de microcapsules. Une quantité insuffisante de capsules ne permettrait pas de modifier suffisamment la pénétration de l'encre dans le papier ; une quantité trop grande de capsules ne permettrait pas la réalisation d'une couche ayant des propriétés mécaniquessuffisantes.These microcapsules will be placed on the surface layer of the paper so as to be effectively torn during writing. This surface layer must contain from 30 to 70'70 by weight, relative to the weight of the layer, of microcapsules. An insufficient quantity of capsules would not make it possible to sufficiently modify the penetration of the ink into the paper; too large a quantity of capsules would not allow the production of a layer having sufficient mechanical properties.
Les solvants utilisables à l'intérieur des microcapsules sont tous les solvants qui, en contact avec l'encre déposée par le stylo sur le papier, augmentent la vitesse de diffusion de l'encre à l'intérieur du papier. On utilisera par exemple des solvants de nature aromatique, ou aliphatique ou des produits chlorés ou des mélanges de ces solvants. Ces solvants pourront contenir un plastifiant tel que le dioctylphtalate par exemple.The solvents which can be used inside the microcapsules are all the solvents which, in contact with the ink deposited by the pen on the paper, increase the speed of diffusion of the ink inside the paper. Solvents of an aromatic or aliphatic nature or chlorine products or mixtures of these solvents. These solvents may contain a plasticizer such as dioctylphthalate for example.
La couche superficielle renfermant les capsules pourra recouvrir la totalité de l'une et/ou de-l'autre face du papier. Ce sera le cas, par exemple comme décrit ci-dessous, lorsque les capsules seront intégrées dans la couche de couchage (procédé papetier) ou lorsqu'on utilisera un procédé d'impression embrassant la totalité de la surface du papier.The surface layer containing the capsules may cover the whole of one and / or the other side of the paper. This will be the case, for example as described below, when the capsules are integrated into the coating layer (papermaking process) or when a printing process covering the entire surface of the paper is used.
Il est également possible, notamment en utilisant une technique d'impression, d'introduire les capsules dans une composition convenable qui ne sera déposée que localement. Lorsque les microcapsules sont insérées dans la couche de couchage du papier, ladite couche de couchage contenant les microcapsules aura, outre ces capsules, une composition connue à base de liant de charge. Il peut être cependant souhaitable, pour protéger les capsules et pour permettre une meilleure répartition de ces capsules dans la couche, d'ajouter aux constituants connus des couches de couchage, un distanceur de microcapsules. Ce distanceur de microcapsules est un produit se présentant sous forme de grains solides (amidon calibré, poudre de cellulose, etc.) qui est mélangé aux ingrédients formant la couche de couchage et qui dans la couche finie se disperse entre les microcapsules. On peut utiliser de 3 à 20% en poids, par rapport au poids de la couche de couchage, de ce distanceur.It is also possible, in particular by using a printing technique, to introduce the capsules into a suitable composition which will only be deposited locally. When the microcapsules are inserted into the coating layer of the paper, said coating layer containing the microcapsules will have, in addition to these capsules, a known composition based on filler binder. It may however be desirable, to protect the capsules and to allow a better distribution of these capsules in the layer, to add to the known constituents of the coating layers, a microcapsule spacer. This microcapsule spacer is a product in the form of solid grains (calibrated starch, cellulose powder, etc.) which is mixed with the ingredients forming the coating layer and which in the finished layer disperses between the microcapsules. From 3 to 20% by weight, relative to the weight of the coating layer, of this spacer can be used.
Comme indiqué ci-dessus les autres ingrédients de la couche de couchage sont des produits connus notamment un liant, par exemple amidon, PVA, latex, qui pourra être utilisé à raison d'environ 5 à 20% en poids par rapport au poids de la couche, une charge, par exemple kaolin, carbonate qui pourra être utilisé à raison d'environ 15 à 45% en poids par rapport au poids de la couche et les divers additifs connus et utilisés pour la réalisation des couches de couchage.As indicated above, the other ingredients of the coating layer are known products, in particular a binder, for example starch, PVA, latex, which may be used in an amount of approximately 5 to 20% by weight relative to the weight of the layer, a filler, for example kaolin, carbonate which can be used at a rate of about 15 to 45% by weight relative to the weight of the layer and the various additives known and used for the production of coating layers.
Bien évidemment les papiers selon l'invention pourront comporter en outre, dans leur masse et dans leur couche de couchage, les éléments connus qui sont utilisés ou utilisables pour lutter contre les falsifications.Obviously, the papers according to the invention may also comprise, in their mass and in their coating layer, the known elements which are used or usable to combat counterfeiting.
Le procédé de réalisation de l'invention utilise n'importe quel procédé papetier qui permet l'incorporation dans les couches de couchage des microcapsules contenant le solvant.The process for carrying out the invention uses any papermaking process which allows the incorporation into the coating layers of microcapsules containing the solvent.
Les exemples non limitatifs suivants illustrent l'invention ; dans ces exemples les pourcentages et les quantités de matière données dans les exemples sont exprimés en poids de matière sèche par rapport au poids de la couche (exprimé en matière sèche).The following nonlimiting examples illustrate the invention; in these examples, the percentages and the amounts of material given in the examples are expressed by weight of dry matter relative to the weight of the layer (expressed as dry matter).
Sur un support collé en masse on dépose, par un moyen de couchage conventionnel,une couche composée de 10% d'amidon oxydé, 55% de capsules renfermant un solvant du type White-Spirit à faibles teneurs en aromatiques (tel que la DILUTINE M5 de SHELL CHIMIE, EXSOL D 145/195 d'ESSO CHIMIE ; point d'ébullition entre 100 et 195°C),12% d'amidon calibré servant de distanceur de microcapsules et 23% de kaolin d'une qualité de couchage.On a mass-bonded support, a layer composed of 10% oxidized starch, 55% capsules containing a solvent of the White-Spirit type with low aromatic contents (such as DILUTINE M5) is deposited, by conventional coating means. from SHELL CHEMISTRY, EXSOL D 145/195 from ESSO CHEMISTRY; boiling point between 100 and 195 ° C), 12% of calibrated starch serving to distance microcapsules and 23% of kaolin of a coating quality.
Les microcapsules sont obtenues par un procédé connu, la paroi étant constituée d'un polyuréthanne.The microcapsules are obtained by a known process, the wall being made of a polyurethane.
Ces capsules ont un diamètre de 10 microns environ.These capsules have a diameter of approximately 10 microns.
La dépose nécessaire pour obtenir une bonne couche selon l'invention est d'environ 5 à 6 g de couche par mètre carré.The removal required to obtain a good layer according to the invention is approximately 5 to 6 g of layer per square meter.
Le papier ainsi obtenu permet de déceler les tentatives de falsification par grattage ou gommage des mentions manuscrites avec un stylo à bille effaçable. En effet, sous la pression d'écriture les capsules éclatent et libèrent le solvant. Celui-ci dilue l'encre, abaisse sa viscosité, augmente sa pénétration dans le support et surtout empêche un effaçage parfait quel que soit le type de gomme ou de grattoir utilisé. Ainsi, après une tentative d'effaçage par gommage ou grattage, il subsistera toujour au moins une trace colorée des mentions manuscrites due à la pénétration de l'encre dans le support, elle-même entourée d'une tache colorée plus ou moins importante.The paper thus obtained makes it possible to detect attempts at falsification by scraping or erasing handwritten mentions with an erasable ballpoint pen. Indeed, under the writing pressure the capsules burst and release the solvent. This dilutes the ink, lowers its viscosity, increases its penetration into the support and above all prevents perfect erasure whatever the type of eraser or scraper used. Thus, after an attempt to erase by scrubbing or scraping, there will always remain at least one colored trace of the handwritten mentions due to the penetration of the ink into the support, itself surrounded by a more or less significant colored spot.
On reprend la composition de la couche donnée dans l'exemple 1 dans laquelle on remplace le solvant du type White-Spirit à faible teneur en aromatiques par un solvant du type essence (Essence E de SHELL CHIMIE ou EXSOL DSP 100-130 d'ESSO-CHIMIE : point d'ébullition entre 100 et 130°C).The composition of the layer given in Example 1 is used, in which the solvent of the White-Spirit type with low aromatic content is replaced by a solvent of the gasoline type (Essence E from SHELL CHEMISTRY or EXSOL DSP 100-130 from ESSO - CHEMISTRY: boiling point between 100 and 130 ° C).
On dépose aussi 5 à 6 g/m2 de couche.We also deposit 5 to 6 g / m2 of layer.
Le comportement est identique à celui du papier décrit dans l'exemple 1.The behavior is identical to that of the paper described in Example 1.
On reprend la composition de la couche donnée dans l'exemple 1 dans laquelle on remplace les capsules renfermant le solvant du type Nhite-Spirit à faible teneur en aromatique par un mélange 50/50 de ce solvant avec du phtalate de di-(éthyl-2 hexyle) (DOP de RHONE POULENC par exemple).The composition of the layer given in Example 1 is repeated, in which the capsules containing the solvent of the Nhite-Spirit type with low aromatic content are replaced by a 50/50 mixture of this solvent with di (ethyl ethyl phthalate ). 2 hexyle) (DOP from RHONE POULENC for example).
Pour la même dépose de 5 à 6 g/m2 de couche on obtient le même comportement que dans les exemples 1 et 2.For the same removal of 5 to 6 g / m 2 of layer, the same behavior is obtained as in Examples 1 and 2.
On reprend la composition de la couche donnée dans l'exemple 1 dans laquelle on remplace les capsules de 10 microns par des capsules de 5 microns de diamètre renfermant le même solvant.The composition of the layer given in Example 1 is repeated, in which the 10 micron capsules are replaced by 5 micron diameter capsules containing the same solvent.
Le comportement du papier est identique à celui du papier décrit dans l'exemple 1.The behavior of the paper is identical to that of the paper described in Example 1.
Sur un support collé en masse on dépose par un moyen de couchage conventionnel une couche composée de 12% d'amidon oxydé, de 46% de capsules de 10 microns de diamètre renfermant un solvant du type Essence (Essence E), de 9% d'amidon calibré et de 33% de kaolin de couchage.On a mass-bonded support, a layer composed of 12% oxidized starch, 46% capsules of 10 micron diameter containing a solvent of the Essence type (Essence E), 9% d is deposited by conventional coating means. calibrated starch and 33% coating kaolin.
Avec une dépose de 5,5 à 6,5 g de couche par mètre carré, on obtient un papier sur lequel toutes les tentatives d'effaçage des mentions manuscrites avec un stylo à bille effaçable laisseront une trace colorée suffisamment visible.With a deposit of 5.5 to 6.5 g of layer per square meter, we obtain a paper on which all attempts to erase handwritten words with an erasable ballpoint pen will leave a sufficiently visible colored trace.
Sur un support collé en masse, on dépose par un moyen de couchage conventionnel une couche composée de 10% d'amidon oxydé, 11% d'amidon calibré, 25% de kaolin et 54% de microcapsules de 7 microns de diamètre renfermant un mélange de solvants type White-Spirit (40%) et paraffines chlorées (Meflex DC 024 D de IMPERIAL CHEMICAL INDUSTRIES) (60%).On a mass-bonded support, a layer composed of 10% oxidized starch, 11% calibrated starch, 25% kaolin and 54% microcapsules 7 microns in diameter containing a mixture is deposited by conventional coating means. White-Spirit type solvents (40%) and chlorinated paraffins (Meflex DC 024 D from IMPERIAL CHEMICAL INDUSTRIES) (60%).
On a déposé une couche de couchage à raison de 5 à 6 g de couche au mètre carré. Le comportement du papier, vis-à-vis d'une écriture à l'aide d'une encre effaçable, est le même que celui du papier décrit dans l'exemple 1.A coating layer was deposited at the rate of 5 to 6 g of layer per square meter. The behavior of paper, vis-à-vis a writing using erasable ink, is the same as that of the paper described in Example 1.
On reprend la composition de la couche donnée dans l'exemple 6 en utilisant des capsules renfermant un mélange de solvants du type aromatique (BAYMICRON V.P. FE 2101) 80% , et du type aliphatique (ISOHEXADECAN BAYER) 20%.The composition of the layer given in Example 6 is used using capsules containing a mixture of solvents of the aromatic type (BAYMICRON V.P. FE 2101) 80%, and of the aliphatic type (ISOHEXADECAN BAYER) 20%.
On a déposé une couche à raison de 6 g/m2. Le comportement du papier vis-à-vis d'une écriture à l'aide d'une encre effaçable est le même que celui du papier décrit dans l'exemple 1.A layer was deposited at the rate of 6 g / m2. The behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
Sur un support collé en masse, on dépose par un moyen de couchage conventionnel une couche composée de 9% d'un liant synthétique acrylique (ACRONAL S320 de BASF) ou à base de styrène- butadiène (CA 36034 de BAYER), 23% de kaolin, 12% d'amidon calibré et 56% de microcapsules telles que celles décrites dans l'exemple 6.On a mass-bonded support, a layer composed of 9% of a synthetic acrylic binder (ACRONAL S320 from BASF) or based on styrene-butadiene (CA 36034 from BAYER) is deposited by conventional coating means, 23% of kaolin, 12% of calibrated starch and 56% of microcapsules such as those described in Example 6.
On a déposé une couche à raison de 6 g/m2. Le comportement du papier vis-à-vis d'une écriture à l'aide d'une encre effaçable est le même que celui du papier décrit dans l'exemple 1.A layer was deposited at the rate of 6 g / m2. The behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
Sur un support collé en masse, on dépose par un moyen de couchage conventionnel une couche composée de 4,57 d'une protéine naturelle de soja comme liant (PROCOTE 200 LV de PURINA) ; 24,5% de kaolin; 12% d'amidon calibré et 59% de microcapsules telles que celles décrites dans l'exemple 6.On a mass-bonded support, a layer composed of 4.57 of a natural soy protein as a binder is deposited by conventional coating means; PROCOTE 200 LV from PURINA; 24.5% kaolin; 12% of calibrated starch and 59% of microcapsules such as those described in Example 6.
On a déposé une couche de couchage à raison de 5 à 6 g/m2. Le comportement du papier vis-à-vis d'une écriture à l'aide d'une encre effaçable est le même que celui du papier décrit dans l'exemple 1.A coating layer was deposited at a rate of 5 to 6 g / m2. The behavior of the paper with regard to writing using erasable ink is the same as that of the paper described in Example 1.
Sur un support collé en masse dans lequel on a introduit en masse les réactifs habituellement introduits dans les papiers de sécurité infalsifiables par les agents chimiques (colorants par exemple), on dépose la couche donnée dans l'exemple 1 dans laquelle on a rajouté les réactifs habituellement introduits en presse encolleuse (réactifs aux agents alcalins par exemple) aux doses nécessaires pour obtenir des quantités de réactifs au mètre carré identiques à celles obtenues dans les papiers de sécurité classiques.On a mass-bonded support into which the reagents usually introduced in security papers which cannot be forged by chemical agents (dyes for example) have been introduced in mass, the layer given in Example 1 is deposited in which added the reagents usually introduced in a size press (reagents with alkaline agents for example) at the doses necessary to obtain quantities of reagents per square meter identical to those obtained in conventional security papers.
La dépose de 5 à 6 g/m2 de couche permet d'obtenir un papier d'une part infalsifiable par des agents chimiques acides, basiques.oxydants, réducteurs, par les couples oxydant-réducteurs, par les solvants,pour les moyens d'écriture classique et d'autre part sur lequel les moyens d'écriture effaçable laisseront une trace colorée très visible après gommage ou grattage.The deposition of 5 to 6 g / m2 of layer makes it possible to obtain a paper which cannot be forged, on the one hand, by acidic, basic, oxidizing, reducing, chemical agents, by oxidizing-reducing couples, by solvents, for the means of classical writing and on the other hand on which the erasable writing means will leave a very visible colored trace after exfoliation or scraping.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8011824A FR2483480A1 (en) | 1980-05-28 | 1980-05-28 | SECURITY PAPER THAT CAN BE USED TO AVOID FALSIFICATIONS WHICH MAY RESULT FROM THE USE OF ERASABLE INK PENS |
| FR8011824 | 1980-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0041024A1 true EP0041024A1 (en) | 1981-12-02 |
Family
ID=9242417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81400825A Withdrawn EP0041024A1 (en) | 1980-05-28 | 1981-05-25 | Security paper for avoiding forgery by employing ball-point pens with erasable ink |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0041024A1 (en) |
| JP (1) | JPS5721600A (en) |
| BR (1) | BR8103312A (en) |
| FR (1) | FR2483480A1 (en) |
| ZA (1) | ZA813560B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570101A1 (en) * | 1984-09-07 | 1986-03-14 | Sotimag | ANTI-FRAUD PROCESS FOR VALUE DOCUMENTS |
| EP0326303A1 (en) * | 1988-01-27 | 1989-08-02 | Moore Business Forms, Inc. | Improved security for images formed by impact based systems |
| US5033773A (en) * | 1988-01-27 | 1991-07-23 | Moore Business Forms | Security for images formed by impact based systems |
| EP0570634A1 (en) * | 1991-02-08 | 1993-11-24 | The Standard Register Company | Solvent and/or pressure sensitive security ink and security document |
| EP0727316A1 (en) * | 1995-02-17 | 1996-08-21 | Sibille Dalle | Printable document comprising means for revealing forgery |
| US5575214A (en) * | 1994-03-15 | 1996-11-19 | Jean-Pierre Braunstein | Apparatus for printing any documents and making them unfalsifiable |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3038178C1 (en) * | 1980-10-09 | 1982-06-09 | GAO Gesellschaft für Automation und Organisation mbH, 8000 München | Security paper protected against erasing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2932582A (en) * | 1959-02-04 | 1960-04-12 | Ncr Co | Pressure sensitive transfer record sheet |
| FR2338149A1 (en) * | 1976-01-13 | 1977-08-12 | Lindselius Berndt | Entrance ticket production method - has chemical compounds reacting under mechanical pressure which prevents fraudulent use |
| DE2722427A1 (en) * | 1977-05-18 | 1978-11-30 | Juergen Dethloff | Cheques with forgery proof coding zones - are for visual and automatic reading using pressure sensitive capsules containing chemicals |
| US4143891A (en) * | 1976-12-29 | 1979-03-13 | Transkirt Corporation | Negotiable document |
-
1980
- 1980-05-28 FR FR8011824A patent/FR2483480A1/en active Granted
-
1981
- 1981-05-25 EP EP81400825A patent/EP0041024A1/en not_active Withdrawn
- 1981-05-27 BR BR8103312A patent/BR8103312A/en unknown
- 1981-05-27 ZA ZA00813560A patent/ZA813560B/en unknown
- 1981-05-28 JP JP8180681A patent/JPS5721600A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2932582A (en) * | 1959-02-04 | 1960-04-12 | Ncr Co | Pressure sensitive transfer record sheet |
| FR2338149A1 (en) * | 1976-01-13 | 1977-08-12 | Lindselius Berndt | Entrance ticket production method - has chemical compounds reacting under mechanical pressure which prevents fraudulent use |
| US4143891A (en) * | 1976-12-29 | 1979-03-13 | Transkirt Corporation | Negotiable document |
| DE2722427A1 (en) * | 1977-05-18 | 1978-11-30 | Juergen Dethloff | Cheques with forgery proof coding zones - are for visual and automatic reading using pressure sensitive capsules containing chemicals |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570101A1 (en) * | 1984-09-07 | 1986-03-14 | Sotimag | ANTI-FRAUD PROCESS FOR VALUE DOCUMENTS |
| EP0176403A1 (en) * | 1984-09-07 | 1986-04-02 | Sotimag | Fraud-preventing method for security papers |
| EP0326303A1 (en) * | 1988-01-27 | 1989-08-02 | Moore Business Forms, Inc. | Improved security for images formed by impact based systems |
| US4936607A (en) * | 1988-01-27 | 1990-06-26 | Moore Business Forms, Inc. | Security for images formed by impact based systems |
| US5033773A (en) * | 1988-01-27 | 1991-07-23 | Moore Business Forms | Security for images formed by impact based systems |
| EP0570634A1 (en) * | 1991-02-08 | 1993-11-24 | The Standard Register Company | Solvent and/or pressure sensitive security ink and security document |
| US5575214A (en) * | 1994-03-15 | 1996-11-19 | Jean-Pierre Braunstein | Apparatus for printing any documents and making them unfalsifiable |
| EP0727316A1 (en) * | 1995-02-17 | 1996-08-21 | Sibille Dalle | Printable document comprising means for revealing forgery |
| FR2730671A1 (en) * | 1995-02-17 | 1996-08-23 | Sibille Dalle | PRINTABLE DOCUMENT COMPRISING FALSIFICATION-READING MEANS |
Also Published As
| Publication number | Publication date |
|---|---|
| BR8103312A (en) | 1982-02-16 |
| JPS5721600A (en) | 1982-02-04 |
| ZA813560B (en) | 1982-06-30 |
| FR2483480A1 (en) | 1981-12-04 |
| FR2483480B1 (en) | 1985-02-08 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): BE CH DE FR GB IT NL |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| 18W | Application withdrawn |
Withdrawal date: 19820804 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PROQUIN, JEAN-CLAUDE |