EP0882599A1 - Security patterns for security papers - Google Patents
Security patterns for security papers Download PDFInfo
- Publication number
- EP0882599A1 EP0882599A1 EP98810504A EP98810504A EP0882599A1 EP 0882599 A1 EP0882599 A1 EP 0882599A1 EP 98810504 A EP98810504 A EP 98810504A EP 98810504 A EP98810504 A EP 98810504A EP 0882599 A1 EP0882599 A1 EP 0882599A1
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- EP
- European Patent Office
- Prior art keywords
- region
- lines
- pattern
- security
- color
- 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.)
- Granted
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- 238000000034 method Methods 0.000 claims description 17
- 239000003086 colorant Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 208000003580 polydactyly Diseases 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/04—Preventing copies being made of an original
- G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
-
- 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
- B41M3/146—Security printing using a non human-readable pattern which becomes visible on reproduction, e.g. a void mark
-
- 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
-
- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
-
- 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
- Y10S283/00—Printed matter
- Y10S283/901—Concealed data
-
- 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
- Y10S283/00—Printed matter
- Y10S283/902—Anti-photocopy
Definitions
- the present invention relates to a safety design for securities, in particular banknotes, a security paper with such a security drawing and a method of printing such a security drawing on value paper.
- the object of the present invention is to improve the known security drawings, and more particularly of make a safety drawing with a pattern in a latent color invisible or almost invisible to the naked eye on real value paper, this latent color pattern clearly revealed on a color photocopy of the said value paper, also on photocopies made using photocopiers from the last generation.
- the principle of the invention is based on the fact that, on the one hand, the background of the drawing is made up of two regions with straight lines and curved lines, both regions with different color density and the lowest color density region forming a pattern.
- the safety drawing also includes a overprint corresponding to the pattern and which is printed overlay on said density region lower in color to a selected color of so as to compensate for the difference in color density between the two regions, thus forming a pattern in latent color or a latent color image, of so that the safety pattern appears as uniform and without pattern with the naked eye, but that the pattern stands out clearly and in a different color than that of the highest color density region in a photocopy of the safety drawing.
- the latent pattern or design is preferably a letter or sign, such as "X”, or still a set of letters forming a word such as "VOID” or "COPY”. It can also include one or multiple digits, or even any pattern.
- Independent claim 12 defines a security with a safety drawing according to the present invention.
- the use of such drawings of security is of course not limited to only securities and banknotes. Indeed, this safety drawing can also be used on cards, such as credit cards or other, checks or stamps. In fact, we may use this design on any printed medium of which we wish to avoid falsification by such means than the photocopy.
- Independent claim 13 defines a method of production of a security paper with a drawing of security according to the present invention.
- Dependent claims 14 and 15 define particular printing processes used for production of a security paper with a drawing of security according to the present invention.
- Figure 1 shows a known safety drawing according to the prior art.
- FIG. 2 represents an example according to the invention, in black and white, from the bottom of a security drawing and a latent motif or design in the form of a cross, the background and latent drawing being shown separately.
- Figure 3 shows an enlargement of different geometric patterns of the background.
- Figure 4 shows a color photograph of a safety design with an "X" pattern according to the invention.
- Figure 5 shows a color photocopy of the photograph of figure 4.
- FIG 1 an art security element according to patent application EP 0 384 897 is represented.
- the three designs of three colors have already been stacked into a set 1 of parallel and dense lines giving an impression of uniform background.
- Safety drawing has areas 2, 3, 4 in which the parallel lines are oriented in a direction other than the direction general of the bottom lines, these areas having the form of letters, the letters making up the word "VOID".
- the figure being an enlargement of the safety drawing and already a copy of it, the words are easily recognizable on it. If we consider the actual size of such safety drawings, then these words are much more difficult to discern on a original drawing. On the other hand, all the lines are straight lines or line segments.
- FIG. 2 the bottom 10 of a safety drawing according to the invention is shown with separate next to it, an overprint 20 in the shape of a cross, this overprint 20 being intended to be printed on the background 10.
- the nuances of colors are obviously difficult to render with photocopies, but this example is given by way of illustration.
- the background 10 of the security drawing is divided into regions having triangular geometric areas 11 placed next to each other, alternately.
- the first type of zones 11 has only parallel lines.
- zones 11a with lines oriented angularly according to a first direction there are zones 11b with oriented straight lines angularly in a second direction and zones 11c with straight lines oriented angularly according to a third direction.
- the bottom also includes a second type of zones 12 having lines spiral curves and a third type of zones 13 comprising a mixture of line segments angularly oriented parallels and segments of spiral lines.
- Printing lines and spirals is made so that they form a pattern corresponding to the overprint 20 intended for be printed as an overlay, in the example described a "X".
- the overprint 20 of this embodiment has the form an "X" also comprising parallel lines oriented in a given angular direction, by example 45 °.
- an overlay of straight lines and curves will therefore occur actually as well as a color overlay compensating for differences in color density.
- the angles of orientation of the parallel lines of the background and overprint can have any value, the important thing being that the background has at least lines oriented in two different directions, and the overlay of lines oriented in one direction different from the other two.
- the lines parallels from the bottom are oriented at about 22.5 ° and 67.5 ° and those of the overlay are oriented about 45 °.
- the angle chosen is preferably about 112.5 °.
- the width of the lines printed in parallel, spiral lines and lines of the overlay is also variable. It can vary between around 15 ⁇ m and 100 ⁇ m.
- the lines printed in have a width of approximately 82.55 ⁇ m and the curved lines a width of about 41.275 ⁇ m.
- the lines of the overlay have preferably a width of about 41.275 ⁇ m. These values have an approximate tolerance of +/- 20%.
- the distance between each printed line measured between the center of two adjacent lines, which we calls the pitch, can vary between around 100 ⁇ m and 800 ⁇ m. The value chosen depends on the uniformity that we want to get for the background and for the overprint. Preferably, this distance is worth around 349.25 ⁇ m for the parallel bottom lines, approximately 247.65 ⁇ m for overprinting and approximately 250 ⁇ m for curved lines. These values have a approximate tolerance of +/- 20%.
- the color density of the overlay intended for to be printed as an overlay is worth approximately 0.010 to 0.300.
- the background areas containing the lines can have any geometric shape, for example a triangular, hexagonal, rectangular shape, circular etc.
- Figure 4 shows a color photograph of a safety drawing according to the invention with the motif in "X" shape printed on top of a background.
- the bottom of this safety drawing corresponds to bottom 10 of embodiment described with reference to FIG. 2, with alternating triangular areas whose lines are oriented in three different directions and the pattern corresponds to the overprint 20 described in reference to figure 2.
- the latent color pattern is difficult to distinguish from background, which has a uniform appearance At first glance.
- Safety drawings according to the invention are produced by conventional printing methods such as: Offset dry or wet, intaglio or a combination of these.
- Offset dry or wet, intaglio or a combination of these.
- at least two plates are required, one for the background and the other for the overprint. These plates may of course contain other patterns in addition and they are mounted on a plate cylinder Offset.
- the drawings are then transferred to a blanket cylinder which then transfers them on the paper itself.
- Multi-color offset are described in EP B 0 092 887 and EP B 0 132 858, for example.
- geometric zones are possible, for example a hexagonal, circular shape or a any other form.
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Finance (AREA)
- Accounting & Taxation (AREA)
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
La présente invention concerne un dessin de sécurité pour papiers-valeurs, notamment des billets de banque, un papier-valeur comportant un tel dessin de sécurité et un procédé d'impression d'un tel dessin de sécurité sur un papier-valeur.The present invention relates to a safety design for securities, in particular banknotes, a security paper with such a security drawing and a method of printing such a security drawing on value paper.
L'un des problèmes principaux qui se pose actuellement dans la fabrication de papiers-valeurs, et en particulier de billets de banque, est de créer des éléments de sécurité qui, d'une part, soient faciles à reporter sur les billets de banque par des techniques d'impression classiques, et qui, d'autre part, soient très difficile, voire impossibles à reproduire, en particulier avec les nouvelles générations de photocopieurs couleur. Leur technologie ayant fait de gros progrès, il devient indispensable de réaliser des éléments de sécurité tels qu'il soit possible de distinguer très facilement une copie couleur, c'est-à-dire de la fausse monnaie, d'un vrai papier-valeur ou billet de banque.One of the main problems that currently arises in the manufacture of securities, and in particular of banknotes, is to create security elements which, on the one hand, are easy to transfer to banknotes by techniques conventional printing, and which, on the other hand, are very difficult, even impossible to reproduce, in especially with the new generations of color photocopiers. Their technology having made big progress, it becomes essential to achieve security features such that it is possible to very easily distinguish a color copy, i.e. counterfeit money, real security or Bank note.
L'utilisation des dessins de sécurité pour empêcher la falsification des papiers-valeurs par photocopie couleur est connue dans l'état de la technique. La demande de brevet EP 0 384 897, par exemple, au nom de la même déposante, décrit un dessin de sécurité composé principalement de trois dessins superposés, chaque dessin étant de couleur différente et comportant des lignes parallèles orientées angulairement, l'ensemble des lignes de chaque dessin étant décalé latéralement de sorte que lors de la juxtaposition des dessins, les lignes ne se chevauchent pas mais donnent l'impression d'un fond uniforme. Chaque dessin de sécurité comporte en outre des zones dans lesquelles les segments de lignes ont une autre orientation que celle des lignes parallèles, de sorte que celles-ci sont discontinues. Ces zones correspondent en fait exactement à des lettres qui deviennent quasiment invisibles à l'oeil nu lorsque les dessins sont superposés mais qui, en revanche, ressortent nettement lorsque l'on effectue une photocopie du dessin de sécurité. Il est ainsi possible de constater immédiatement et de manière très simple si un papier-valeur donné est un original ou une photocopie, lorsque celui-ci comporte une tel dessin de sécurité.The use of security drawings to prevent falsification of securities by photocopying color is known in the state of the art. The EP 0 384 897, for example, in the name of the same applicant, describes a compound security drawing mainly of three superimposed drawings, each drawing being of a different color and comprising parallel lines oriented angularly, the whole lines of each drawing being shifted laterally so that when juxtaposing the drawings, the lines do not overlap but give the impression of a uniform background. Each safety drawing has further areas in which the segments of lines have a different orientation than that of lines parallel, so that these are discontinuous. These areas actually correspond exactly to letters that become almost invisible to the naked eye when the drawings are superimposed but which, in however, stand out clearly when performing a photocopy of the safety drawing. It is so possible to see immediately and in a very simple if a given security is an original or a photocopy, where this includes such a drawing of security.
La présente invention a pour but d'améliorer les dessins de sécurité connus, et plus particulièrement de réaliser un dessin de sécurité comportant un motif en une couleur latente invisible ou presque à l'oeil nu sur un vrai papier-valeur, ce motif en couleur latente se révélant clairement sur une photocopie couleur dudit papier-valeur, et ce également sur les photocopies faites au moyen de photocopieurs de la dernière génération.The object of the present invention is to improve the known security drawings, and more particularly of make a safety drawing with a pattern in a latent color invisible or almost invisible to the naked eye on real value paper, this latent color pattern clearly revealed on a color photocopy of the said value paper, also on photocopies made using photocopiers from the last generation.
Ce but est atteint par un dessin de sécurité selon la revendication 1.This goal is achieved by a safety drawing according to the claim 1.
Le principe de l'invention repose sur le fait que, d'une part, le fond du dessin est composé deux régions avec des lignes droites et des lignes courbes, les deux régions ayant une densité de couleur différente et la région de densité de couleur la plus faible formant un motif. Le dessin de sécurité comporte en outre une surimpression correspondant au motif et qui est imprimée en superposition sur ladite région de densité de couleur plus faible en une couleur choisie de manière à compenser la différence de densité de couleur entre les deux régions, formant ainsi un motif en couleur latente ou une image en couleur latente, de sorte que le dessin de sécurité apparaít comme uniforme et sans motif à l'oeil nu, mais que le motif ressort clairement et dans une autre couleur que celle de la région de densité de couleur la plus forte lors d'une photocopie du dessin de sécurité.The principle of the invention is based on the fact that, on the one hand, the background of the drawing is made up of two regions with straight lines and curved lines, both regions with different color density and the lowest color density region forming a pattern. The safety drawing also includes a overprint corresponding to the pattern and which is printed overlay on said density region lower in color to a selected color of so as to compensate for the difference in color density between the two regions, thus forming a pattern in latent color or a latent color image, of so that the safety pattern appears as uniform and without pattern with the naked eye, but that the pattern stands out clearly and in a different color than that of the highest color density region in a photocopy of the safety drawing.
En effet, lors d'une photocopie, cette combinaison de différentes densités et de nuances de couleurs crée des interférences au niveau du scanner de la photocopieuse. Le contraste entre le fond du dessin de sécurité et le motif sera fortement amplifié et ce dernier apparaítra nettement sur la copie et dans une autre couleur que le reste du dessin de sécurité, rendant une telle falsification évidente à l'oeil nu et permettant de distinguer facilement une photocopie d'un original.Indeed, during a photocopy, this combination of different densities and shades of colors creates interference with the copier's scanner. The contrast between the background of the safety drawing and the pattern will be greatly amplified and the latter will appear clearly on the copy and in a color other than the rest of the security drawing making such tampering evident with the naked eye and allowing easily distinguish a photocopy from an original.
Les revendications dépendantes 2 à 11 définissent des modes d'exécution particuliers du dessin de sécurité selon l'invention.Dependent claims 2 to 11 define specific modes of execution of the safety drawing according to the invention.
Le motif ou dessin en couleur latente, est de préférence une lettre ou un signe, tel que "X", ou encore un ensemble de lettres formant un mot tel que "VOID" ou "COPIE". Il peut également comporter un ou plusieurs chiffres, voire même n'importe quel motif. The latent pattern or design is preferably a letter or sign, such as "X", or still a set of letters forming a word such as "VOID" or "COPY". It can also include one or multiple digits, or even any pattern.
La revendication indépendante 12 définit un papier-valeur
comportant un dessin de sécurité selon la
présente invention. L'utilisation de tels dessins de
sécurité n'est bien entendu pas limitée aux seuls
papiers-valeurs et billets de banque. En effet, ce
dessin de sécurité peut aussi être utilisé sur des
cartes, comme par exemple des cartes de crédit ou
autre, des chèques ou encore des timbres. En fait, on
peut employer ce dessin sur tout support imprimé dont
on souhaite éviter la falsification par des moyens tels
que la photocopie.
La revendication indépendante 13 définit un procédé de
production d'un papier-valeur comportant un dessin de
sécurité selon la présente invention.
Les revendications dépendantes 14 et 15 définissent des procédés d'impression particuliers utilisés pour la production d'un papier-valeur comportant un dessin de sécurité selon la présente invention.Dependent claims 14 and 15 define particular printing processes used for production of a security paper with a drawing of security according to the present invention.
L'invention sera mieux comprise à l'aide de la description d'un mode de réalisation de l'invention et des figures qui s'y rapportent qui illustrent le principe de l'invention.The invention will be better understood using the description of an embodiment of the invention and related figures which illustrate the principle of the invention.
La figure 1 représente un dessin de sécurité connu selon l'art antérieur.Figure 1 shows a known safety drawing according to the prior art.
La figure 2 représente un exemple selon l'invention, en noir et blanc, du fond d'un dessin de sécurité et d'un motif ou dessin latent en forme de croix, le fond et le dessin latent étant montrés séparément. FIG. 2 represents an example according to the invention, in black and white, from the bottom of a security drawing and a latent motif or design in the form of a cross, the background and latent drawing being shown separately.
La figure 3 représente un agrandissement de différents motifs géométriques du fond.Figure 3 shows an enlargement of different geometric patterns of the background.
La figure 4 représente une photographie couleur d'un dessin de sécurité avec un motif en forme de "X" selon l'invention.Figure 4 shows a color photograph of a safety design with an "X" pattern according to the invention.
La figure 5 représente une photocopie couleur de la photographie de la figure 4.Figure 5 shows a color photocopy of the photograph of figure 4.
Des figures en couleur représentant la présente invention sont déposées avec la présente demande en tant que figures 4 et 5, le principe de l'invention étant en effet très difficile à démontrer et à reproduire avec des photocopies en noir et blanc.Colored figures representing the present invention are filed with the present application in as in Figures 4 and 5, the principle of the invention being indeed very difficult to demonstrate and to reproduce with black and white photocopies.
A la figure 1, un élément de sécurité de l'art
antérieur selon la demande de brevet EP 0 384 897 est
représenté. Les trois dessins de trois couleurs
différentes ont déjà été superposés en un ensemble 1 de
lignes parallèles et dense donnant une impression de
fond uniforme. Le dessin de sécurité comporte des zones
2, 3, 4 dans lesquelles les lignes parallèles sont
orientées dans une autre direction que la direction
générale des lignes du fond, ces zones ayant la forme
de lettres, les lettres composant le mot "VOID". La
figure étant un agrandissement du dessin de sécurité et
déjà une copie de celui-ci, les mots sont facilement
reconnaissables sur celle-ci. Si l'on considère la
taille réelle de tels dessins de sécurité, alors ces
mots sont beaucoup plus difficiles à discerner sur un
dessin original. D'autre part, toutes les lignes sont
des droites ou des segments de droite.In Figure 1, an art security element
according to patent application EP 0 384 897 is
represented. The three designs of three colors
have already been stacked into a set 1 of
parallel and dense lines giving an impression of
uniform background. Safety drawing has
A la figure 2, le fond 10 d'un dessin de sécurité selon
l'invention est représenté avec séparé à côté de lui,
une surimpression 20 en forme de croix, cette
surimpression 20 étant destinée à être imprimé sur le
fond 10. Les nuances de couleurs sont évidemment
difficile à rendre avec des photocopies, mais cet
exemple est donné à titre illustratif.In FIG. 2, the
Le fond 10 du dessin de sécurité est divisé en régions
comportant des zones géométriques triangulaires 11
placées les unes à côté des autres, en alternance. Il y
a dans cet exemple 3 types de zones avec des
configurations différentes de lignes. Le premier type
de zones 11 ne comporte que des droites parallèles.
Parmi ce type de zones avec cette première
configuration, on distingue des zones 11a avec des
droites orientées angulairement selon une première
direction, des zones 11b avec des droites orientées
angulairement selon une deuxième direction et des zones
11c avec des droites orientées angulairement selon une
troisième direction. Le fond comprend en outre un
second type de zones 12 ayant quant à lui des lignes
courbes en forme de spirales et un troisième type de
zones 13 comportant un mélange de segments de droites
parallèles orientés angulairement et de segments de
lignes en spirale. L'impression des lignes et des
spirales est réalisée de telle sorte qu'elles forment
un motif correspondant à la surimpression 20 destinée à
être imprimé en superposition, dans l'exemple décrit un
"X". The
La surimpression 20 de ce mode d'exécution a la forme
d'un "X" comportant lui aussi des lignes parallèles
orientées selon une direction angulaire donnée, par
exemple 45°. Lors de l'impression de cette
surimpression 20 sur le fond, une superposition de
lignes droites et de courbes se produira donc
effectivement de même qu'une superposition de couleur
compensant les différences de densité des couleurs.The
Les angles d'orientation des lignes parallèles du fond et de la surimpression peuvent avoir n'importe quelle valeur, l'important étant que le fond ait au moins des lignes orientées dans deux direction différentes, et la surimpression des lignes orientées dans une direction différente des deux autres. De préférence, les lignes parallèles du fond sont orientées à environ 22,5° et 67,5° et celles de la surimpression sont orientées à environ 45°. Si le fond comporte en plus des lignes orientées selon une troisième direction, l'angle choisi est de préférence environ 112,5°. Ces valeurs ont une tolérance approximative de +/- 20%.The angles of orientation of the parallel lines of the background and overprint can have any value, the important thing being that the background has at least lines oriented in two different directions, and the overlay of lines oriented in one direction different from the other two. Preferably, the lines parallels from the bottom are oriented at about 22.5 ° and 67.5 ° and those of the overlay are oriented about 45 °. If the background has more lines oriented in a third direction, the angle chosen is preferably about 112.5 °. These values have a approximate tolerance of +/- 20%.
La largeur des lignes imprimées en parallèle, des lignes en spirale et des lignes de la surimpression est également variable. Elle peut varier entre environ 15 µm et 100 µm. De préférence, les lignes imprimées en parallèle ont une largeur d'environ 82,55 µm et les lignes courbes une largeur d'environ 41,275 µm. De plus, les lignes de la surimpression ont quant à elles de préférence une largeur d'environ 41,275 µm. Ces valeurs ont une tolérance approximative de +/- 20%. The width of the lines printed in parallel, spiral lines and lines of the overlay is also variable. It can vary between around 15 µm and 100 µm. Preferably, the lines printed in have a width of approximately 82.55 µm and the curved lines a width of about 41.275 µm. Of moreover, the lines of the overlay have preferably a width of about 41.275 µm. These values have an approximate tolerance of +/- 20%.
La distance entre chaque ligne imprimée, mesurée entre le centre de deux lignes adjacentes, ce que l'on appelle le pitch, peut varier entre environ 100 µm et 800 µm. La valeur choisie dépend de l'uniformité que l'on souhaite obtenir pour le fond et pour la surimpression. De préférence, cette distance vaut environ 349,25 µm pour les lignes parallèles du fond, environ 247,65 µm pour la surimpression et environ 250 µm pour les lignes courbes. Ces valeurs ont une tolérance approximative de +/- 20%.The distance between each printed line, measured between the center of two adjacent lines, which we calls the pitch, can vary between around 100 µm and 800 µm. The value chosen depends on the uniformity that we want to get for the background and for the overprint. Preferably, this distance is worth around 349.25 µm for the parallel bottom lines, approximately 247.65 µm for overprinting and approximately 250 µm for curved lines. These values have a approximate tolerance of +/- 20%.
La densité de la couleur de la surimpression destinée à être imprimée en superposition vaut environ de 0,010 à 0,300.The color density of the overlay intended for to be printed as an overlay is worth approximately 0.010 to 0.300.
Les zones du fond contenant les lignes peuvent avoir n'importe quelle forme géométrique, par exemple une forme triangulaire, hexagonale, rectangulaire, circulaire etc.The background areas containing the lines can have any geometric shape, for example a triangular, hexagonal, rectangular shape, circular etc.
A la figure 3, un agrandissement des dessins
géométriques se trouvant dans les zones 11 et 12 est
donné. On y retrouve des segments de lignes parallèles
et orientés selon trois directions différentes
correspondant à celles des zones 11a, 11b, 11c, et des
segments de droites courbes en spirale correspondant à
celles des zones 12.In Figure 3, an enlargement of the drawings
in
La figure 4 représente une photographie couleur d'un
dessin de sécurité selon l'invention avec le motif en
forme de "X" imprimé en superposition sur un fond. Le
fond de ce dessin de sécurité correspond au fond 10 du
mode d'exécution décrit en référence à la figure 2,
avec des zones triangulaires alternées dont les lignes
sont orientées dans trois directions différentes et le
motif correspond à la surimpression 20 décrite en
référence à la figure 2. Sur cette photographie, le
motif en couleur latente est difficile à distinguer du
fond qui, quant à lui, présente une apparence uniforme
à première vue.Figure 4 shows a color photograph of a
safety drawing according to the invention with the motif in
"X" shape printed on top of a background. The
bottom of this safety drawing corresponds to
A la figure 5, une photocopie couleur du dessin de sécurité de la figure 4 est représentée. Sur cette photocopie, le motif en couleur latente ressort clairement dans le dessin de sécurité et de manière univoque, le contraste et la différence de couleur entre le fond et celui-ci étant nettement marqués.In Figure 5, a color photocopy of the drawing of Figure 4 security is shown. On this photocopy, the latent color pattern stands out clearly in the safety drawing and so unequivocal, contrast and color difference between the bottom and the latter being clearly marked.
Des dessins de sécurité selon l'invention sont produits par des procédés d'impression classiques tels que: Offset sec ou à l'humide, taille-douce ou une combinaison de ceux-ci. Dans le cas d'un procédé Offset, deux plaques au moins sont nécessaires, l'une pour le fond et l'autre pour la surimpression. Ces plaques peuvent bien entendu contenir d'autres motifs en plus et elles sont montées sur un cylindre porte-plaques Offset. Les dessins sont ensuite reportés sur un cylindre porte-blanchet qui les transfère ensuite sur le papier lui-même. De tels procédés d'impression Offset à plusieurs couleurs sont décrits dans les brevets EP B 0 092 887 et EP B 0 132 858, par exemple.Safety drawings according to the invention are produced by conventional printing methods such as: Offset dry or wet, intaglio or a combination of these. In the case of a process Offset, at least two plates are required, one for the background and the other for the overprint. These plates may of course contain other patterns in addition and they are mounted on a plate cylinder Offset. The drawings are then transferred to a blanket cylinder which then transfers them on the paper itself. Such printing processes Multi-color offset are described in EP B 0 092 887 and EP B 0 132 858, for example.
Dans le cas de la combinaison de procédés d'impression différents, on peut par exemple utiliser le procédé taille-douce pour le fond et le procédé Offset pour la surimpression.In the case of a combination of printing processes different, we can for example use the process intaglio for the background and the offset process for the overprint.
Le procédé d'impression d'un dessin de sécurité selon l'invention sur un papier-valeur ou billet de banque comporte au moins les deux étapes suivantes:
- impression avec une première plaque d'impression d'un fond composé d'au moins une première région et une deuxième région juxtaposées, lesdites régions comportant des dessins géométriques propres à chaque région, de manière que la première région ait une densité de couleur plus forte que celle de la deuxième région, la deuxième région formant un motif,
- impression avec une deuxième plaque d'impression d'une surimpression correspondant au motif formé par la deuxième région en superposition sur ladite deuxième région en une couleur choisie de manière à compenser la différence de densité entre les deux régions, de sorte que le dessin de sécurité apparaít comme uniforme et sans motif à l'oeil nu, mais que ledit motif ressort clairement et dans une autre couleur que la première région lors d'une photocopie du dessin de sécurité.
- printing with a first printing plate of a background composed of at least a first region and a second region juxtaposed, said regions comprising geometrical drawings specific to each region, so that the first region has a higher color density than that of the second region, the second region forming a pattern,
- printing with a second printing plate of an overprint corresponding to the pattern formed by the second region superimposed on said second region in a color chosen so as to compensate for the difference in density between the two regions, so that the security design appears uniform and without pattern to the naked eye, but that said pattern appears clearly and in a color other than the first region when a photocopy of the security drawing.
Il est possible d'augmenter le nombre de couleurs utilisées dans le dessin de sécurité. Par exemple, les dessins géométriques du fond peuvent être de couleurs différentes et la surimpression composée de plusieurs couleurs. Dans ce cas, le nombre de plaques d'impression doit également être augmenté en conséquence. It is possible to increase the number of colors used in the safety drawing. For example, geometric designs of the background can be colored different and the overlay made up of several colors. In this case, the number of plates printing should also be increased by result.
L'invention n'est pas limitée au mode d'exécution décrit, mais d'autre variantes sont possibles dans le cadre de la protection revendiquée.The invention is not limited to the embodiment described, but other variants are possible in the protection claimed.
Par exemple, on peut imprimer les lignes en spirale dans la surimpression, et ne laisser sur le fond que des lignes parallèles orientées selon des directions différentes. Le même effet d'alternance de lignes droites et de courbes est ainsi répété et le principe de l'invention reproduit.For example, you can print the lines in a spiral in the overlay, and only leave on the bottom parallel lines oriented in directions different. The same effect of alternating lines lines and curves is thus repeated and the principle of the invention reproduced.
D'autres formes de zones géométriques sont possibles, par exemple une forme hexagonale, circulaire ou une autre forme quelconque.Other forms of geometric zones are possible, for example a hexagonal, circular shape or a any other form.
En lieu et place de spirales, on peut utiliser, comme lignes courbes, des cercles concentriques, ou des ellipses, ou des ondulations, ou encore d'autres équivalents.Instead of spirals, we can use, as curved lines, concentric circles, or ellipses, or ripples, or other equivalent.
Claims (15)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH138197 | 1997-06-06 | ||
CH1381/97 | 1997-06-06 | ||
CH138197 | 1997-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0882599A1 true EP0882599A1 (en) | 1998-12-09 |
EP0882599B1 EP0882599B1 (en) | 2002-03-13 |
Family
ID=4209107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810504A Expired - Lifetime EP0882599B1 (en) | 1997-06-06 | 1998-06-02 | Security patterns for security papers |
Country Status (12)
Country | Link |
---|---|
US (1) | US6050606A (en) |
EP (1) | EP0882599B1 (en) |
JP (1) | JP4260926B2 (en) |
KR (1) | KR100474523B1 (en) |
CN (1) | CN1101756C (en) |
AT (1) | ATE214337T1 (en) |
AU (1) | AU729627B2 (en) |
CA (1) | CA2239578C (en) |
DE (1) | DE69804157T2 (en) |
PL (1) | PL189595B1 (en) |
RU (1) | RU2199446C2 (en) |
UA (1) | UA61063C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000045344A1 (en) * | 1999-01-26 | 2000-08-03 | The Governor And Company Of The Bank Of England | Substrates for printing |
EP2183118A1 (en) * | 2007-08-16 | 2010-05-12 | Document Security Systems, Inc. | Single-color screen patterns for copy protection |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6320675B1 (en) * | 1997-07-15 | 2001-11-20 | Canon Kabushiki Kaisha | Image processing apparatus and method and storage medium |
DE10015097A1 (en) * | 2000-03-28 | 2001-10-04 | Giesecke & Devrient Gmbh | Banknote paper and method for its printing, engraved printing plate for such a method and method for producing an engraved print- plate for use with such printing, to produce complex print images that are hard to counterfeit |
US6538757B1 (en) | 2000-05-19 | 2003-03-25 | Pitney Bowes Inc. | Method for automatically reading electronic tickets |
JP3718712B2 (en) * | 2001-08-06 | 2005-11-24 | 独立行政法人 国立印刷局 | Printed matter capable of authenticating authenticity and method for producing the same |
CA2399356C (en) * | 2001-09-07 | 2012-01-24 | Kba-Giori S.A. | Control element for printed articles |
EP1847400B1 (en) * | 2001-09-07 | 2009-12-30 | Kba-Giori S.A. | Control element for printed objects |
EP1549503A2 (en) * | 2002-10-10 | 2005-07-06 | Document Security Systems, Inc. | Document containing security images |
US20070029394A1 (en) * | 2005-08-01 | 2007-02-08 | Wicker David M | Covert document system |
EP1447234A1 (en) | 2003-02-13 | 2004-08-18 | Kba-Giori S.A. | Printing process on a security element and security element |
EP1447235A1 (en) * | 2003-02-13 | 2004-08-18 | Kba-Giori S.A. | Security element and printing method |
CA2526404C (en) * | 2003-05-29 | 2009-11-10 | Document Security Systems, Inc. | Document containing security images |
RU2333105C2 (en) * | 2003-06-30 | 2008-09-10 | Кба-Жиори С.А. | Printing machine |
KR100744035B1 (en) | 2006-03-21 | 2007-07-30 | 한국조폐공사 | Anti counterfeit element and the manufacture method to use reiteration pattern |
WO2007127862A2 (en) * | 2006-04-26 | 2007-11-08 | Document Security Systems, Inc. | Solid-color embedded security feature |
DE602008003359D1 (en) * | 2007-07-26 | 2010-12-23 | Toshiba Kk | Image generation method and personal authentication medium with it |
JP5062645B2 (en) * | 2009-07-31 | 2012-10-31 | 独立行政法人 国立印刷局 | Latent image pattern former |
RU2527791C1 (en) | 2013-07-18 | 2014-09-10 | Федеральное государственное унитарное предприятие "Гознак" (ФГУП Гознак") | Multilayer protected composition (versions) and article of such composition |
CN103895374B (en) * | 2013-11-01 | 2016-09-14 | 中钞油墨有限公司 | There is anti-counterfeiting pattern of light structure changes and preparation method thereof |
KR101655443B1 (en) | 2015-04-13 | 2016-09-09 | 한국에스케이에프씰 주식회사 | Combination type magnetizer for magnetic encoder |
CN108538187B (en) * | 2018-04-16 | 2021-06-01 | 上海印钞有限公司 | Combined fluorescent pattern and application thereof |
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EP0551205A1 (en) * | 1992-01-08 | 1993-07-14 | Moore Business Forms, Inc. | Security documents |
EP0614133A2 (en) * | 1993-03-01 | 1994-09-07 | The Standard Register Company | Varying tone security document |
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FR2289992A1 (en) * | 1974-10-31 | 1976-05-28 | Opi Metriservice Sa | SURFACE COLORING PROCESS |
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US4227720A (en) * | 1978-11-08 | 1980-10-14 | Burroughs Corporation | Protected document |
JPS6381076A (en) * | 1986-09-25 | 1988-04-11 | Ricoh Co Ltd | Method of printing negotiable securities incapable of being copied of high accuracy |
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JP2600094B2 (en) * | 1992-06-04 | 1997-04-16 | 大蔵省印刷局長 | Anti-counterfeit latent image print and printing method thereof |
US5853197A (en) * | 1996-03-05 | 1998-12-29 | The Standard Register Company | Security document |
GB9718958D0 (en) * | 1997-09-08 | 1997-11-12 | House Of Questa The Limited | Improvements relating to security printing |
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-
1998
- 1998-06-02 EP EP98810504A patent/EP0882599B1/en not_active Expired - Lifetime
- 1998-06-02 AU AU69870/98A patent/AU729627B2/en not_active Ceased
- 1998-06-02 AT AT98810504T patent/ATE214337T1/en not_active IP Right Cessation
- 1998-06-02 DE DE69804157T patent/DE69804157T2/en not_active Expired - Lifetime
- 1998-06-03 CA CA002239578A patent/CA2239578C/en not_active Expired - Fee Related
- 1998-06-03 KR KR10-1998-0020477A patent/KR100474523B1/en not_active IP Right Cessation
- 1998-06-03 US US09/090,079 patent/US6050606A/en not_active Expired - Fee Related
- 1998-06-04 UA UA98062920A patent/UA61063C2/en unknown
- 1998-06-05 CN CN98109659A patent/CN1101756C/en not_active Expired - Fee Related
- 1998-06-05 RU RU98110821/12A patent/RU2199446C2/en not_active IP Right Cessation
- 1998-06-08 JP JP17385698A patent/JP4260926B2/en not_active Expired - Fee Related
Patent Citations (2)
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EP0551205A1 (en) * | 1992-01-08 | 1993-07-14 | Moore Business Forms, Inc. | Security documents |
EP0614133A2 (en) * | 1993-03-01 | 1994-09-07 | The Standard Register Company | Varying tone security document |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000045344A1 (en) * | 1999-01-26 | 2000-08-03 | The Governor And Company Of The Bank Of England | Substrates for printing |
US8444181B2 (en) | 2002-10-10 | 2013-05-21 | Document Security Systems, Inc. | Single-color screen patterns for copy protection |
EP2183118A1 (en) * | 2007-08-16 | 2010-05-12 | Document Security Systems, Inc. | Single-color screen patterns for copy protection |
EP2183118A4 (en) * | 2007-08-16 | 2010-10-06 | Document Security Systems Inc | Single-color screen patterns for copy protection |
Also Published As
Publication number | Publication date |
---|---|
PL189595B1 (en) | 2005-08-31 |
CA2239578A1 (en) | 1998-12-06 |
AU729627B2 (en) | 2001-02-08 |
DE69804157T2 (en) | 2002-09-05 |
JP4260926B2 (en) | 2009-04-30 |
JPH11227315A (en) | 1999-08-24 |
KR100474523B1 (en) | 2005-07-12 |
DE69804157D1 (en) | 2002-04-18 |
KR19990006600A (en) | 1999-01-25 |
US6050606A (en) | 2000-04-18 |
CN1205276A (en) | 1999-01-20 |
CA2239578C (en) | 2007-05-15 |
UA61063C2 (en) | 2003-11-17 |
PL322352A1 (en) | 1998-12-07 |
CN1101756C (en) | 2003-02-19 |
RU2199446C2 (en) | 2003-02-27 |
ATE214337T1 (en) | 2002-03-15 |
EP0882599B1 (en) | 2002-03-13 |
AU6987098A (en) | 1998-12-10 |
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