WO2008100172A1 - Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé - Google Patents

Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé Download PDF

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Publication number
WO2008100172A1
WO2008100172A1 PCT/RU2007/000072 RU2007000072W WO2008100172A1 WO 2008100172 A1 WO2008100172 A1 WO 2008100172A1 RU 2007000072 W RU2007000072 W RU 2007000072W WO 2008100172 A1 WO2008100172 A1 WO 2008100172A1
Authority
WO
WIPO (PCT)
Prior art keywords
raster
image
printing
main
screen
Prior art date
Application number
PCT/RU2007/000072
Other languages
English (en)
Russian (ru)
Inventor
Alexei Vadimovich Zaitsevsky
Original Assignee
Zuev, Boris Alexandrovich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zuev, Boris Alexandrovich filed Critical Zuev, Boris Alexandrovich
Priority to PCT/RU2007/000072 priority Critical patent/WO2008100172A1/fr
Publication of WO2008100172A1 publication Critical patent/WO2008100172A1/fr

Links

Classifications

    • 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
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • 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
    • B42D25/405—Marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/10—Changing, amusing, or secret pictures

Definitions

  • PRODUCTS MANUFACTURED IN SUCH METHOD.
  • the invention relates to the field of printing and more specifically relates to a method of manufacturing a printed product having means of protection against falsification, as well as printed products made in this way.
  • Known methods for the manufacture of printed products equipped with means of protection against counterfeiting there is a known method of manufacturing printed products, in which at the screening stage, in addition to the main visible image, an additional latent image is applied to the medium, which can only be identified after applying a template specially provided for this to the medium.
  • the template may be a transparent film with a printed pattern, or a plate with optical microlenses, or the relief of the carrier of the main image.
  • the manifestation of the additional image is carried out by combining the ordered microstructure of the printed image with the ordered structure of the template and is based on the moire effect (interference).
  • the period and construction angle of two compatible structures must be identical or at least close.
  • At least one of the structures must be deformed or have a certain heterogeneity, whereby the encoding of the latent image is carried out.
  • Inhomogeneity is local changes in the period of construction of the elements of the pattern or a change in the angle of construction or a change in the shape of the elements that make up the graphic image.
  • Other alignment methods are also possible, for example, projection onto a medium or transmission of a medium.
  • Known printed products containing two latent images encoded with the possibility of separate manifestation of each of them, as well as a method of manufacturing such printed products are disclosed in patent RU 2268152 A. According to the publication, the printed product contains a carrier with
  • SUBSTITUTE SHEET (RULE 26) applied to it by the main image transmitted by an ordered raster, and two additional hidden images transmitted by a raster with a deformed structure, while the raster structure is deformed perpendicularly and parallel to the corner of its construction.
  • a method of manufacturing such a printed product is that it comprises the step of constructing an ordered raster for printing the main image and making local changes to the structure of this raster in accordance with the tonal gradations of the corresponding additional latent image.
  • the manifestation of latent images encoded in this way is carried out by superimposing a template (optical key) onto a medium with a printed image and rotating this template, while which of the two additional images appears first depends on the angle of rotation of the template.
  • a template optical key
  • the basis of the invention is the task to create such a method of manufacturing printed products, which would allow to encode in the raster of the main
  • SUBSTITUTE SHEET (RULE 26) images of more than two additional hidden images, while ensuring high quality color reproduction of the main image and simplifying the separate clear manifestation of all hidden images, as well as creating a printed product that would contain, in addition to the main visible image, three or more hidden images with the possibility of their separate manifestation and at the same time be characterized would have high quality color reproduction
  • the problem is solved in that in the method of manufacturing printed products containing the main visible image and at least two additional coded images hidden from visual observation, including the stage of constructing an ordered raster for printing the main image for printing and localizing it into the structure of this raster changes in accordance with the tonal gradations of the corresponding latent image according to the invention, when printing at least one color layer of the main Fragments build two raster structures that differ in the angle of construction of the raster, encode two latent images in each raster structure, after which these raster structures are combined, while in the process of printing the main image, the gradient of each element of this image is reduced in accordance with the dependence
  • X ' is the gradient value of a particular element in each of the two raster structures constructed
  • X is the gradient value of the same element of the printed image.
  • the problem is also solved by the fact that in the method of manufacturing printed products containing the main visible image and at least two additional coded, hidden from visual observation, images, including the stage of constructing an ordered raster for transmission to print the main image and entering into the structure of this a raster of local changes in accordance with the tonal gradations of the corresponding latent image, according to the invention, when printing at least one color layer of the main th image build three raster structure differing construction raster angle encode each raster structure of two latent images, after
  • X is the gradient value of a particular element in each of the three raster structures constructed
  • X is the gradient value of the same element of the printed image.
  • FIG. 1 shows a diagram of the stages of a method for manufacturing a printed product according to the invention
  • FIG. 2 (A - L) - additional images to be encoded in the raster of the main image
  • FIG. 3 printed product in the color layer BLUE, containing the main visible image and 6 encoded latent images
  • FIG. 4 is the same as in FIG. 3, in the purple color layer
  • FIG. 5 (A - L) - types of printed products with separately hidden images.
  • Figure l shows the main image 1 to be transmitted for printing in three colors: BLUE, PURPLE and YELLOW.
  • a method of manufacturing a printed product according to the invention consists in the fact that at the stage of constructing an ordered raster for printing the main image, at least one color layer is used to build two or three raster structures,
  • SUBSTITUTE SHEET (RULE 26) different raster construction angles. Local changes are made to each raster structure in order to encode two hidden images in it by deforming the raster structure perpendicularly and parallel to the corner of its construction. In this case, the strain values are determined by the tonal gradations of the corresponding encoded additional image. The resulting raster structures are combined. When the main image is transferred for printing in a given color layer, the gradient of each element of this image is reduced in the case of constructing two raster structures in accordance with the dependence
  • X ' is the gradient value of a particular element in each of the two raster structures constructed
  • X is the initial gradient value of the same element, and in accordance with the dependence:
  • X is the gradient value of a particular element in each of the three raster structures constructed
  • X is the initial gradient value of the same element, in the case of building three raster structures.
  • SUBSTITUTE SHEET (RULE 26) three in the corresponding color layer 2 or 3. Obtained after combining the three raster structures in the BLUE color layer, the main visible image containing six additional latent images is shown in FIG. 3. The main image after combining the three raster structures in the PURPLE color layer, also containing an additional six other different latent images, is shown in FIG. 4. To obtain the final color main image on an appropriate medium, the image in the BLUE color layer shown in FIG. 3, the image in the PURPLE color layer shown in FIG. 4 and image 7 (FIG. 2) in the YELLOW color layer.
  • a printed product made by the described method contains, in addition to the main visible image 1, twelve additional latent images encoded in its raster.
  • the printed products made by the method according to the present invention are characterized by a high degree of protection against falsification, can contain up to six latent images in each color layer, while ensuring accurate preservation of the shades of the rasterized image. All additional hidden images encoded in the raster of the main image can be developed separately with high accuracy by implementing a simplified development procedure by simply applying an optical key.
  • a method of manufacturing a printed product according to the invention can be successfully used with a variety of printing technologies in the production of such printed products as packaging, labels, and in particular, securities and banknotes.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un procédé de fabrication d'articles imprimés comprenant une image principale visible et plusieurs images complémentaires cachées, non observables visuellement et formées de manière à ce que chacune d'elles puisse se manifester séparément. Elle comprend le stade de formation d'une trame ordonnée destinée à la transmission pour impression de l'image principale et d'insertion dans la structure de cette trame de variations locales correspondant aux gradations tonales d'une image cachée correspondante. Lors de l'impression d'au moins une couche de couleur de l'image principale on forme deux ou trois structures de trame se distinguant par leur angle de formation de trame, on code dans chaque structure une paire d'images cachées et on superpose ces structures de trame. Selon l'invention, lors de l'impression le gradient de chaque élément de la couche de couleur correspondante de l'image principale est réduite pendant la formation de deux trames selon la formule X'=2X-X2, et pendant la formation de trois trames selon la formule X''=3X2+X3, dans lesquelles X' est la valeur de gradient d'un élément déterminé dans chacune des deux structures de trames formées, X'' est la valeur de gradient de l'élément déterminé dans chacune des trois structures de trame formées et X est la valeur de gradient du même élément de l'image à imprimer d'origine. Les articles imprimés fabriqués se selon ce procédé peut contenir jusqu'à six images cachées complémentaires dans chaque couche de couleur.
PCT/RU2007/000072 2007-02-15 2007-02-15 Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé WO2008100172A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2007/000072 WO2008100172A1 (fr) 2007-02-15 2007-02-15 Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2007/000072 WO2008100172A1 (fr) 2007-02-15 2007-02-15 Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé

Publications (1)

Publication Number Publication Date
WO2008100172A1 true WO2008100172A1 (fr) 2008-08-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000072 WO2008100172A1 (fr) 2007-02-15 2007-02-15 Procédé de fabrication d'articles imprimés comprenant plusieurs images cachées (et variantes) et articles imprimés fabriqués par ce procédé

Country Status (1)

Country Link
WO (1) WO2008100172A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172850A (en) * 1985-03-01 1986-10-01 Kenrick & Jefferson Ltd Security documents
RU2099197C1 (ru) * 1992-06-04 1997-12-20 Директор-Дженерал, Принтинг Бюро, Министри оф Файнэнс Печатное изделие со скрытым изображением и способ его изготовления (варианты)
CA2305266A1 (fr) * 1998-03-20 1999-09-30 De La Rue International Limited Structure d'image latente
RU2151071C1 (ru) * 1999-11-19 2000-06-20 Закрытое акционерное общество "Информационно-правовое агентство" Способ получения изображения
EP0975467B1 (fr) * 1997-04-18 2002-03-06 De La Rue International Limited Structure d'image transitoire
RU2268152C1 (ru) * 2004-08-11 2006-01-20 Брэнд Секьюрити Системс Гмбх Печатная продукция и способ ее изготовления (варианты)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172850A (en) * 1985-03-01 1986-10-01 Kenrick & Jefferson Ltd Security documents
RU2099197C1 (ru) * 1992-06-04 1997-12-20 Директор-Дженерал, Принтинг Бюро, Министри оф Файнэнс Печатное изделие со скрытым изображением и способ его изготовления (варианты)
EP0975467B1 (fr) * 1997-04-18 2002-03-06 De La Rue International Limited Structure d'image transitoire
CA2305266A1 (fr) * 1998-03-20 1999-09-30 De La Rue International Limited Structure d'image latente
RU2151071C1 (ru) * 1999-11-19 2000-06-20 Закрытое акционерное общество "Информационно-правовое агентство" Способ получения изображения
RU2268152C1 (ru) * 2004-08-11 2006-01-20 Брэнд Секьюрити Системс Гмбх Печатная продукция и способ ее изготовления (варианты)

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