EP2580065A1 - Procede de personnalisation d'images latentes encastrees et document realise - Google Patents
Procede de personnalisation d'images latentes encastrees et document realiseInfo
- Publication number
- EP2580065A1 EP2580065A1 EP11714352.9A EP11714352A EP2580065A1 EP 2580065 A1 EP2580065 A1 EP 2580065A1 EP 11714352 A EP11714352 A EP 11714352A EP 2580065 A1 EP2580065 A1 EP 2580065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sub
- pixels
- latent image
- image
- embedded
- 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
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000003086 colorant Substances 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 19
- 239000011241 protective layer Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims description 8
- 238000003763 carbonization Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000002679 ablation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- 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
- B42D25/415—Marking using chemicals
- B42D25/42—Marking using chemicals by photographic processes
-
- 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
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/267—Marking of plastic artifacts, e.g. with laser
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/34—Multicolour thermography
-
- 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
-
- 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
- B42D25/41—Marking using electromagnetic radiation
Definitions
- the present invention relates to a method of personalizing embedded latent images. It finds applications especially in credit cards or other official documents (identity, subscription, etc.).
- the invention relates more particularly to the personalization of latent images protected by a transparent mechanical protection.
- some devices provide a latent image consisting of an organic layer, monochrome or a metal layer. These layers are coated with a transparent protective layer.
- the personalization that is to say the formation of the final image, is performed by a laser beam that burns the organic layer or engraves the metal layer, showing a certain contrast between the parts treated by the laser beam, and untreated parts. If these devices are very simple, they prohibit color, which greatly limits their application.
- JP2004082493 shows a similar example. If these devices make it possible to produce color images, the superposition of the sub-layers, their selective ablation, make these solutions delicate and especially very expensive.
- Patent FR 2451081 proposes the personalization of a latent image coated under a protective layer, by the use of micro capsules which by mechanical pressure, show different colors. If this device seems interesting in some aspects, it does not allow to show a quality image. Moreover, the application of the mechanical force necessary for the change of color, is incompatible with shapes or patterns of small size, essential to obtain a sufficient resolution of the desired image.
- the present invention aims to overcome these drawbacks by proposing a method of customizing a sunken latent image, to obtain a final color image of high ⁇ quality, low-cost laser treatment on an image latent of particular structure.
- the subject of the invention is a method of personalizing a latent image embedded in a transparent protective mechanical layer.
- the method consists of forming a latent image consisting of sub-pixels printed with primary colors uniformly distributed, these colors being reflective, then to reveal gray levels of a final image by a modulated emission of a laser beam on the sub-pixels for producing dark non-reflecting surfaces covering part or all of the surface of each sub-pixel.
- sub pixels of white color equally uniformly distributed are added to constitute the pixels of the latent image, each quadruplet of sub-pixels forming a pixel;
- the non-reflecting dark-colored surfaces covering part or all of the surface of the sub-pixels are obtained by carbonization of the sub-pixels by the laser beam through the transparent protective layer;
- the non-reflecting dark-colored surfaces covering part or all of the surface of the sub-pixels are obtained by thermochromic effect or by photochromic effect, under the influence of the laser beam through the transparent protective layer.
- the invention also relates to the document comprising an image produced according to the method above.
- the image being arranged under a mechanical protection layer
- the embedded image is formed of sub-pixels which have surfaces printed with the primary colors when viewed by reflection and are regularly distributed on a support, these surfaces. being covered with dark non-reflective surfaces.
- the dark non-reflecting surfaces are black in color and the sub-pixels are in the primary colors and also regularly distributed white colors;
- the surface of the latent image is curved in order to allow an image incrustation in a flexible document.
- the invention thus proposes to make, during the mass production of the image support object, which may be a credit card, a latent image, deposited on this support and mechanically protected by a transparent layer, this image latent being printed according to the same manufacturing processes as those used for the standard manufacture of credit cards. At this stage of production, all latent images are identical and appear as white. Then in a second step, a laser beam, through the transparent protective layer, transforms the latent image into a personalized final color image.
- the latent image consists of small surfaces with primary colors (RGB): Red, Green and Blue, surfaces that will be called "sub pixels", each set (triplet) sub pixels (RGB) forms a pixel of the image.
- RGB primary colors
- These sub-pixels are printed by inkjet, or any other technique known to those skilled in the art during the mass production of the carrier object, which may be a credit card or other identity document.
- This latent image, formed of regularly distributed sub pixels, is identical for all the objects of the same series. The latent image is then mechanically protected by a transparent coating.
- the customization of the latent image is effected by a laser beam which, by thermal effect or photosensitive effect, reveals a dark color, preferably black, covering partially or totally the sub pixels surface.
- the dark coloration being formed between the surface of the sub-pixels and the field of view, the recovery of the sub-pixels by this coloration appears in the field of view by reflection of the light on the sub-pixels.
- the subject of the invention is a method of personalizing a latent image embedded in a transparent mechanical protection layer.
- the latent image consists of a regular set of small primary-color printed surfaces, essentially including red, green, and blue colors.
- the invention advantageously provides for regularly adding small white areas. Each small surface constitutes a sub-pixel of the image, and a set (quadruplet) of sub-pixel red, green, blue and white constitutes a pixel of the image.
- Each image can contain several million pixels, depending on the definition.
- the sub-pixels are arranged regularly to form the latent image. They are printed by any technique known to those skilled in the art, such as inkjet, for example.
- the surface, which supports the latent image can be flat or curved.
- the colors of the sub pixels are reflective, in order to give the final image, once personalized, the maximum brightness in ambient light.
- the latent image consisting of all the pixels described above, appears as a white surface to the observer.
- the latent image is then coated with a transparent protective layer. All of these manufacturing steps, are common to all objects in the same series.
- the customization is carried out by a laser beam which through the protective transparent layer, reveals non-reflecting surfaces, dark colors, preferably black, which more or less cover the surface of the sub-pixels thus forming the gray levels of the final custom color image.
- the non-reflective surfaces made by the laser beam are obtained by thermal or photochromic effect.
- the colored surface of each sub-pixel is carbonized in part or in whole by the laser beam.
- the ink used to color the sub-pixels has thermochromic properties or photochromic properties, known to those skilled in the art who, under the influence of either a thermal effect or a radiation effect of the laser beam causes a non-reflecting, preferably black, coloration on the treated parts.
- FIG. 1 shows a credit card comprising the latent image according to the invention.
- FIG. 2 shows the same credit card once personalized by the laser beam through the protective layer.
- FIG. 3 shows the "sub-pixels" of the latent image.
- FIG. 4 shows the section of the latent image protected under the transparent protective layer.
- FIG. 5 shows the personalization by the laser beam of the latent image.
- FIG. 6 shows an example of gray levels obtained by the laser beam, of the personalized image.
- Figure 1 shows a credit card (11) on which, during its mass production, the latent image (12) has been printed. Any technique known to those skilled in the art printing can be used, including techniques commonly practiced to print the patterns' color cards.
- the latent image (12) may be located on a flat portion of the credit card, or on a curved surface, or in relief, such as, for example, the raised portions of the credit card numbers.
- the credit card is coated with a transparent protective layer like the current credit cards. At this level, standard credit card manufacturing processes are not modified.
- Figure 2 shows the same credit card, the latent image (11) of Figure 1, has been customized, showing the final color image (21). If this image is a photo ID, it can preferably have the standardized dimensions of photo ID, 35mm by 45mm.
- Figure 3 shows a detailed view of the latent image (12). It consists of small areas that we call “sub-pixels", regularly arranged. Each quadruplet of "sub-pixels" (31) of red color, (32) of green color, (33) of blue color, and (34) of white color form a pixel which may have a square shape according to the example of Figure 3.
- the "subpixels” can also be aligned forming monochrome bands in the previously described colors.
- the ink used to print the "sub-pixels” is preferably reflective. According to the example of FIG. 3, the "sub-pixels" are squares of ⁇ on the side.
- the pixel comprising the four "subpixels” according to this example has a square shape of 32 ⁇ of side.
- Figure 4 shows the section of a credit card (11) comprising the latent image (12), the assembly being coated with the transparent protective layer (41).
- Figure 5 shows a credit card (11) including the latent image (12) coated with the protective layer (41).
- a laser beam (51) scans the entire surface of the latent image (12) to customize it through the protective layer (41), showing the gray levels of the final image, by performing dark, preferably black, non-reflective surfaces that partially or wholly cover the surface of each "sub-pixel".
- the gray levels are obtained by carbonization of the color of the subpixels.
- other methods known to those skilled in the art, use photochromic or thermochromic colors, which under the influence of the wavelength of the laser beam, or under the thermal influence of the laser beam, make it possible to reveal a color dark, which reflects very little light.
- the reproduction of a digital image for example is according to the invention to be performed by laser beam (51) the gray level of each pixel of the scanned image by partial or total darkening, 'especially by blackening, a or more sub pixels of each pixel of the reproduced image corresponding to a pixel of the digital image to be reproduced.
- the area of the surface to be blackened above each sub-pixel corresponds to that of the image to reproduce in order to reconstruct the same level of gray as that of this image for each of its sub-pixels.
- Figure 6 shows examples of gray levels on the four "sub pixels" (31), (32), (33), and (34) of a pixel.
- the laser beam (51) of FIG. 5 sweeps the latent image from left to right.
- the impact of the laser beam on the surface of the "sub-pixel” (31) has generated a black surface (61) of lmx ⁇ . Sweeping the "sub-pixels" from left to right for example, the laser beam, when the surface to be treated is larger, can leave a straight trace (62) of ⁇ wide, and of length proportionate to the non-reflective surface required.
- ⁇ A way of example in the "subpixel” (32) the non-reflective surface has a dimension of x 12 ⁇ lpm.
- non-reflective surfaces (63) and (64) are shown on the "sub pixels" (33), and (34) respectively.
- some "sub pixels” can be completely covered with non-reflective surface, or conversely not be covered at all.
- each "sub-pixel” can be covered with 16 x 16 laser impacts, thus forming 256 gray levels per "sub-pixel”.
- the identity photo of 35mm X 45mm will then consist of more than 6 million pixels.
- the intensity of the laser beam is programmed according to the gray levels of the image to be reproduced. These gray levels are recorded with their address in a memory of a digital processing unit.
- the predetermined scans are also recorded according to the image to be embedded on the document medium (global dimension, size of the sub-pixels, type of organization of the sub-pixels).
- the unit controls the emission and displacement of the laser beam through suitable equipment, known to those skilled in the art, in order to reproduce the gray levels stored in a given image .
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Credit Cards Or The Like (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1001415A FR2958777A1 (fr) | 2010-04-07 | 2010-04-07 | Dispositif de personnalisation d'images latentes encastrees |
PCT/FR2011/000126 WO2011124774A1 (fr) | 2010-04-07 | 2011-03-10 | Procede de personnalisation d'images latentes encastrees et document realise |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2580065A1 true EP2580065A1 (fr) | 2013-04-17 |
EP2580065B1 EP2580065B1 (fr) | 2014-08-06 |
Family
ID=43065720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11714352.9A Active EP2580065B1 (fr) | 2010-04-07 | 2011-03-10 | Procede de personnalisation d'images latentes encastrees et document realise |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2580065B1 (fr) |
FR (1) | FR2958777A1 (fr) |
WO (1) | WO2011124774A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3093302A1 (fr) | 2019-02-28 | 2020-09-04 | Idemia France | Image couleur formée à partir d’un hologramme |
US11143881B2 (en) | 2015-12-23 | 2021-10-12 | Idemia France | Process for producing, by etching through a lenticular grating, images that may be selectively viewed by varying angle of observation |
FR3137870A1 (fr) | 2022-07-12 | 2024-01-19 | Idemia France | Document d’identité avec motif fluorescent |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2971972B1 (fr) * | 2011-02-28 | 2013-03-08 | Jean Pierre Lazzari | Procede de formation d'une image laser couleur a haut rendement reflectif et document sur lequel une image laser couleur est ainsi realisee |
FR2984217B1 (fr) * | 2011-12-19 | 2014-06-06 | Jean Pierre Lazzari | Procede de formation d'images laser couleur et document ainsi realise |
FR2987156B1 (fr) | 2012-02-22 | 2015-01-30 | Jean Pierre Lazzari | Procede de formation d'une image laser couleur observable selon des couleurs variables, et document sur lequel une telle image laser couleur est ainsi realisee |
FR2989627B1 (fr) * | 2012-04-24 | 2014-06-27 | Jean Pierre Lazzari | Procede de formation d'images laser couleur securisee et document ainsi realise |
FR2989626B1 (fr) * | 2012-04-24 | 2014-06-27 | Jean Pierre Lazzari | Procede de formation d'image laser couleur aux couleurs degradees sur sa peripherie et document ainsi realise |
DE102012211767B4 (de) | 2012-07-05 | 2014-03-13 | Bundesdruckerei Gmbh | Sicherheitsdokumentenrohling für eine farbige Laserpersonalisierung, Verfahren zur Herstellung eines Sicherheitsdokuments mittels farbiger Laserpersonalisierung eines Sicherheitsdokumentenrohlings und Sicherheitsdokument. |
FR3006238B1 (fr) * | 2013-05-28 | 2015-06-19 | Oberthur Technologies | Arrangement pour et procede de realisation d'une image en couleur |
FR3013256B1 (fr) | 2013-11-15 | 2016-01-15 | Oberthur Technologies | Procede de personnalisation visuelle d'un document d'identite comportant une image latente |
FR3019495B1 (fr) * | 2014-04-02 | 2021-07-09 | Oberthur Technologies | Dispositif de securite apte a eclaircir un motif a luminosite reduite |
FR3027846B1 (fr) | 2014-10-31 | 2019-04-19 | Idemia France | Document identitaire comportant un guillochis et un arrangement de pixels |
DE102018113575A1 (de) | 2018-06-07 | 2019-12-12 | Bundesdruckerei Gmbh | Sicherheitselement mit farbiger Abbildung |
DE102019113431B4 (de) | 2018-06-28 | 2024-08-22 | Bundesdruckerei Gmbh | Verfahren und Vorrichtung zur Kennzeichnung einer Datenseite, insbesondere für ein Wert- und/oder Sicherheitsdokument |
DE102018118473A1 (de) * | 2018-07-31 | 2020-02-06 | Bundesdruckerei Gmbh | Lichtsteuerfolie, Dokument mit einer Lichtsteuerfolie und Verfahren zur Herstellung eines Dokumentes mit einer Lichtsteuerfolie |
FR3098757B1 (fr) * | 2019-07-17 | 2021-10-22 | Idemia France | Procédé de fabrication d’un code à barres couleur bidimensionnel et dispositif de sécurité associé |
DE102019122586B4 (de) | 2019-08-22 | 2021-04-08 | Bundesdruckerei Gmbh | Mikrostrukturiertes transparentes Sicherheitselement |
LU101475B1 (de) * | 2019-10-21 | 2021-04-21 | Phoenix Contact Gmbh & Co | Informationsträger und Verfahren zur Herstellung eines Informationsträgers |
FR3103736B1 (fr) | 2019-11-29 | 2021-12-10 | Idemia France | Image personnalisée formée à partir d’un hologramme métallique |
EP3838609A1 (fr) | 2019-12-17 | 2021-06-23 | Agfa Nv | Articles pouvant être marqués au laser |
EP3838610A1 (fr) | 2019-12-17 | 2021-06-23 | Agfa Nv | Articles pouvant être marqués au laser |
NL1043549B1 (en) | 2020-01-17 | 2021-09-08 | Rene Ten Velden Ronald | Method for generating an embedded colour image within a synthetic (polymer) data carrying document using laser |
FR3116761B1 (fr) | 2020-11-30 | 2024-02-09 | Idemia France | Image personnalisée formée à partir d’une couche métallique et d’un réseau lenticulaire |
FR3122608B1 (fr) | 2021-05-10 | 2023-09-08 | Idemia France | Fabrication d’une image à partir d’une structure holographique |
FR3124000B1 (fr) | 2021-06-15 | 2023-06-09 | Idemia France | Formation d’une image 3D à partir d’une structure lenticulaire |
DE102022208882A1 (de) | 2022-08-26 | 2024-02-29 | Bundesdruckerei Gmbh | Farbige Laserpersonalisierung mit hoher Farbsättigung |
FR3144353A1 (fr) | 2022-12-22 | 2024-06-28 | Idemia France | Procédé de recalage d’une matrice de sous-pixels agencée au sein d’un document de sécurité |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2451081A1 (fr) | 1979-03-08 | 1980-10-03 | Solaic Sa | Carte en polychlorure de vinyle avec zone de personnalisation protegee |
US5364829A (en) * | 1991-08-30 | 1994-11-15 | Matsushita Electric Industrial Co., Ltd. | Rewritable recording medium and a method of recording in the same |
US6169266B1 (en) * | 1998-03-25 | 2001-01-02 | Xirom, Inc. | Etching of multi-layered coated surfaces to add graphic and text elements to an article |
US6165687A (en) * | 1999-06-29 | 2000-12-26 | Eastman Kodak Company | Standard array, programmable image forming process |
JP2004082493A (ja) | 2002-08-27 | 2004-03-18 | Yvo Inc | 特殊酸化被膜金属板にレーザによる多彩色の絵柄等の描画する方法 |
GB0326597D0 (en) * | 2003-11-14 | 2003-12-17 | The Technology Partnership Plc | A system |
-
2010
- 2010-04-07 FR FR1001415A patent/FR2958777A1/fr active Pending
-
2011
- 2011-03-10 WO PCT/FR2011/000126 patent/WO2011124774A1/fr active Application Filing
- 2011-03-10 EP EP11714352.9A patent/EP2580065B1/fr active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11143881B2 (en) | 2015-12-23 | 2021-10-12 | Idemia France | Process for producing, by etching through a lenticular grating, images that may be selectively viewed by varying angle of observation |
FR3093302A1 (fr) | 2019-02-28 | 2020-09-04 | Idemia France | Image couleur formée à partir d’un hologramme |
FR3137870A1 (fr) | 2022-07-12 | 2024-01-19 | Idemia France | Document d’identité avec motif fluorescent |
Also Published As
Publication number | Publication date |
---|---|
FR2958777A1 (fr) | 2011-10-14 |
EP2580065B1 (fr) | 2014-08-06 |
WO2011124774A1 (fr) | 2011-10-13 |
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