EP3154793A1 - Method and device for personalizing a document blank by means of a graphic - Google Patents
Method and device for personalizing a document blank by means of a graphicInfo
- Publication number
- EP3154793A1 EP3154793A1 EP15722106.0A EP15722106A EP3154793A1 EP 3154793 A1 EP3154793 A1 EP 3154793A1 EP 15722106 A EP15722106 A EP 15722106A EP 3154793 A1 EP3154793 A1 EP 3154793A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- graphic
- brightness
- document
- photosensitive layer
- graphics
- 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
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- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 238000001228 spectrum Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000003384 imaging method Methods 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 8
- 230000035508 accumulation Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010147 laser engraving Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
-
- 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
-
- 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
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/305—Associated digital information
-
- 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
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/309—Photographs
-
- 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
Definitions
- the invention relates to a method for personalizing a document blank with a graphic for producing a document by means of an irradiation device and a device for personalizing a document blank.
- a graphic such as a portrait of the document holder can be applied to the document for this purpose.
- a graph The technique of laser engraving has proved its worth on a document.
- color pigments are produced by bombarding a photosensitive material with laser light in the document blank.
- a material conversion takes place in the photosensitive material, whereby individual pixels can be generated at the point of impact of the laser.
- a graphic can first be rasterized, with the individual pixels of the graphic subsequently being transmitted to the document by individual laser pulses.
- a polycarbonate layer or a polyvinyl chloride may be applied to the documents, to which an additive, which consists essentially of carbon chains, is added. If this layer is now bombarded with a laser pulse, individual molecular chains can break up and carbon can be released. This manifests itself in a blackening of the layer in the region of the region hit by the laser pulse. In general, the generated gray level depends on the pulse energy.
- graphics are applied to a document line by line or column by column by laser engraving. It can come within a row or column to strong fluctuations in brightness between adjacent pixels. For a laser generating the pixels, this means that the emitted pulse energy has to be varied greatly from pixel to pixel. For example, this can lead to blurring of the contours of the graphics produced in low-cost fiber lasers, since the laser system can not follow the rapid jumps in the required pulse energy during the engraving of a line.
- Known solutions to this problem include, for example, either the use of expensive solid-state laser systems or highly lossy fiber laser systems with downstream Q-switches, which can provide fast-variable pulse energy, or slowing down the imaging process so that there is sufficient time to properly tune the laser system to the required pulse energy is. While the former solution represents a significant increase in the cost of a laser engraving device, it the second solution is a considerable extension of the imaging time.
- a document means paper-based and / or plastic-based documents, such as identity documents, in particular passports, identity cards, VISA and driver's licenses, vehicle registration documents, vehicle registration documents, company identity cards, health cards or other ID documents as well as chip cards, means of payment, in particular banknotes,
- a data memory for storing at least one attribute can be integrated in it.
- a "document” is understood to mean, in particular, a portable electronic device which has at least one data memory for storing an attribute and a communication interface for reading out the attribute.
- the document has a secure memory area for storing the at least one attribute in order to prevent that the attribute stored in the memory area is altered in an unauthorized manner or read out without the authorization required for this purpose.
- the invention relates to a method for personalizing a document blank with a graphic for producing a document by means of an irradiation device.
- the document blank has a photosensitive layer, which is designed such that upon exposure of the photosensitive layer with electromagnetic radiation at least one optically detectable parameter of the photosensitive layer changes.
- This may be, for example, a blackening or whitening of the photosensitive layer upon exposure to laser light.
- the change in the parameter that is, for example, the brightening or blackening, scales with the energy introduced into the photosensitive layer by the electromagnetic radiation.
- the electromagnetic radiation is provided by an irradiation device, wherein the intensity of the radiation provided by the irradiation device is adjustable.
- the intensity of the irradiation can be adjusted step-by-step or in defined steps.
- a monochrome output image is provided.
- the source graphic may be a portrait of the future document owner, or a logo or other identifying feature.
- the term "monochrome" in this case can mean that the monochrome output graphic has only gray values or different brightness values of a defined color Pixel can be assigned an information content of one byte, which corresponds to 255 different brightness values
- the brightness values of the monochrome output graphics are now reduced to at least two brightness levels. All brightness values within a defined interval are assigned a uniform brightness value. The result of this method step is a reduced output graphic, which contains only pixels whose brightness value corresponds to one of the uniform brightness values of the brightness levels.
- This reduced output graphic is subdivided into sub-graphics in a next method step, wherein each of the sub-graphics has only pixels of the same brightness. If, for example, five levels of brightness have been selected in the previous method step, then five subgraphs are also obtained accordingly.
- each brightness level is assigned an energy to be introduced by the electromagnetic radiation into the photosensitive layer. Since each sub-graphic contains only pixels of the same brightness, that is to say pixels of a single brightness level, when imaging a sub-graphic, the photosensitive layer of the document blank is only exposed to the energy to be applied associated with the brightness level of the sub-graphic.
- the method described above could have the advantage that during the application of a single partial graphic, the output power of the irradiation device does not have to be changed. This eliminates the usually necessary waiting times, which result from the conversion of the energy of the electromagnetic radiation emitted by the irradiation device.
- irradiation devices can be used to implement the method according to the invention, which react only very slowly to a necessary change in the emitted energy, since such a conversion is only once, namely only necessary before the start of the imaging of a partial graphic. Subsequently, the entire partial graphic can be applied to the document blank with one and the same setting of the irradiation device.
- a partial graphic does not necessarily have to be all pixels of a brightness level which are present in the entire reduced output graphic.
- a partial graphic may also consist of all the pixels of a brightness level in a row of the reduced original graphic.
- the irradiation device passes through an image line a plurality of times in succession, with only pixels of a partial graphic image, that is, a brightness level, being applied during a passage through the image line.
- the radiation device can be a laser source.
- the laser source is preferably configured so that it can deliver defined energy to laser pulses.
- a laser pulse may be a light pulse of pulse energy between 0.01 mJ and 1 mJ and a pulse width of about 3ns to 250ns. In this case, such a pulse peak power of about 10kW to 50kW.
- the wavelength of the light emitted in this case must be adapted to the requirements of the photosensitive layer.
- wavelengths in the near infrared are common, for example at 1064 nm.
- each pixel of an applied graphic can then be generated by applying a defined pulse to the photosensitive layer with a laser pulse.
- a pulsed laser source When using a pulsed laser source, each pixel of an applied graphic can then be generated by applying a defined pulse to the photosensitive layer with a laser pulse.
- the product must be adapted from the number of pulses and the energy of a single pulse of the energy to be introduced into the photosensitive material for the generation of the desired brightness level.
- a single laser pulse would be necessary to generate a pixel of the first brightness level, while three pixels would be necessary to obtain a pixel of the desired brightness level for a pixel of the third brightness level.
- the output power of the laser can remain constant for each pulse, regardless of the brightness level to be generated. It would be necessary to deliver different numbers of laser pulses to one pixel only at different brightness levels.
- the blackening of photosensitive material is not additive in some cases, ie does not increase uniformly for each laser pulse absorbed, this is not possible with all photosensitive materials.
- the laser source may be a fiber laser which consists, for example, of a pulse source and a downstream fiber amplifier.
- a fiber laser which consists, for example, of a pulse source and a downstream fiber amplifier.
- MOPA Master Oscillator Power Ampi ifier
- the pump power at which the fiber amplifier is pumped can be kept constant.
- the pulse source In order to generate a pixel of defined brightness at a certain point within a graphic, it is then only necessary to cause the pulse source to emit a single laser pulse. This is then amplified to the power level defined by the pumping power held constant and generates a pixel of defined brightness when hitting the photosensitive layer.
- the use of such a fiber laser could have the advantage that the control of a device for carrying out the method according to the invention can be made very simple, since during the imaging of a partial graphic of the fiber amplifier used remains untouched and only the pulse source and the alignment of the laser radiation must be controlled on the document blank.
- the at least two brightness levels of the reduced output graphics are defined individually for each graph to be applied or are selected the same for each graph.
- the decision whether to adjust the brightness levels to the graphics to be applied, or to keep constant over a large number of graphics depends on the graphics to be applied. If, for example, a graphic is used in which the different brightness values of the individual pixels are distributed uniformly over the entire spectrum of possible brightness values, the brightness levels can be selected such that the number of pixels of the applied graphics is distributed uniformly over the brightness level. If, for example, the graphics are 1000 pixels and four levels of brightness have been selected, then in this embodiment the limits of the brightness levels should be selected such that 250 pixels fall in each brightness level.
- the brightness levels may also be selected such that each brightness level includes the same number of brightness values. For example, as previously stated, a pixel may assume 255 different brightness values (1 byte). If one were to define four brightness levels for this embodiment, they would have to be selected such that 64 brightness values are contained within each brightness level, or 63 brightness values.
- the two abovementioned possibilities of defining the brightness levels would be particularly suitable if a number of brightness levels is to be maintained for a plurality of graphics. As a result, the process time for generating a graphic could be reduced, since it is not necessary to determine the brightness levels individually for each graphic.
- the brightness values of the pixels of a graphic do not distribute evenly over all available brightness values, but that, for example, accumulations of specific brightness values of the individual pixels occur.
- the brightness levels used later can be adapted to brightness values at precisely these ascertained accumulations, for example by centering the interval of the brightness values associated with a brightness level with an accumulation and the brightness value associated with the brightness level corresponding to the maximum of the brightness level Accumulation is chosen.
- the choice of the limits of a brightness level as well as the choice of the brightness value associated with the brightness level can also be adapted otherwise to the form of the clustering of the pixels. This could be necessary, for example, if accumulations do not follow a symmetrical distribution (Gaussian distribution) but are strongly asymmetrical.
- the reduced output graphic may be rendered prior to subdividing into sub-graphics by dithering and / or posterization.
- edges of the graphic that have occurred between the sub-images of the brightness levels that have occurred due to the previously performed reduction to the at least two brightness levels can be smoothed so that an improvement in the image quality is achieved compared to the original underlying the graphic.
- the applied graphic is the negative of the underlying output graphic.
- a photosensitive layer which does not become darker but lighter upon irradiation with electromagnetic radiation. This could have the advantage that after generation of the graphic no further changes to the graphics due to blackening of individual pixels can be made more.
- a darker pixel can always be added to a graphic in the case of a positive, but it is not possible to blacken an already faded pixel in the case of a negative.
- the counterfeiting security of the document produced could be improved by applying a negative.
- electromagnetic radiation is applied to those areas of the photosensitive layer which lie outside the edges of the applied graphic, so that they fade. In this way it can be prevented that subsequently changes can be made in these marginal areas.
- a positive of the graphic in addition to the negative of the graphic, can also be applied to the document blank. This could further increase the forgery security of the document, as it can be checked at any time whether the negative matches the positive shown or whether discrepancies between the two graphics can be established.
- the document blank has a multilayer document body, wherein the layers may be plastic and / or paper and / or metal and / or polymer layers.
- the document blank in one of the layers has a chip with a memory area and an interface, the interface allowing access to the memory area of the chip.
- the output graphics applied to the document can be stored as part of the method, wherein, for example, when the document is inspected, the stored output graphics can be read out via the interface. In this way, the forgery-proofing of the document can be further increased since, in checking the authenticity of the document, the negative, the positive and the original of the graphic can be compared with one another.
- the invention relates to a device for personalizing a document blank with a graphic for producing a document with an irradiation device for providing electromagnetic radiation.
- the irradiation device is associated with a control device, by wel- the intensity of the radiation provided by the irradiation device can be adjusted.
- the irradiation device is in turn designed to act on a document blank with a photosensitive layer with electromagnetic radiation.
- the device comprises a data processing device with processor means, memory means and an interface, wherein the interface is adapted to read in a monochrome output image.
- the processor means of the device are adapted to reduce the brightness values of the monochrome output graphics to at least two brightness levels to obtain a reduced output graphics subdivide the reduced output graphics into sub-graphics, each of the sub-graphics only pixels of the same brightness - the control means of the irradiation device so to control in that the individual partial graphics are each completely imaged on the document blank by exposing the photosensitive layer to electromagnetic radiation by the irradiation device.
- the storage means in this case include an assignment of the brightness levels to an energy to be introduced into the photosensitive layer.
- the processor means Before imaging a sub-graphic, the processor means access the memory means to determine the energy to be injected associated with the brightness level of a sub-graphic and subsequently control the control means of the irradiation device to apply the energy to be applied to the photosensitive layer.
- the apparatus further includes a feeder and a stacker, wherein the feeder includes a plurality of document blanks and is adapted to feed the document blanks to the irradiation means for exposure to electromagnetic radiation and wherein the stacker is adapted to receive personalized document blanks.
- the stacking device is further adapted to receive faulty documents separately from the personalized document blanks.
- FIG. 1 is a block diagram of an apparatus for personalizing a document blank with a graphic
- Fig. 4 is a block diagram of a document according to the invention.
- FIG. 1 shows a block diagram of a device 100 for personalizing a document blank 102 with a graphic.
- the device 100 essentially consists of an irradiation device 104 and a conveyor 106.
- the irradiation device 104 includes a laser source 108, wherein the laser source 108 is operatively connected to a laser control 1 10.
- the irradiation device 104 includes processor means 1 12 as well as storage means 1 14 and an interface 16.
- the laser control system 1 10 further includes a program module 1 18 containing machine-readable code, by the execution of which the laser control system 1 10 drives the laser source 108.
- the laser source 108 is connected to a processing head 122 via coupling means, such as a fiber coupling 120.
- the processing head 122 is designed to decouple the laser radiation generated by the laser source 108 and via the fiber coupling 120 to the processing head 122, so that a targeted beam 124 can be delivered to the card blank 102.
- the orientation of the beam 124 can be effected, for example, by an arrangement of deflection mirrors whose alignment is controlled by piezoelectric or electro-actuated elements.
- the light deflection system used in the processing head 122 may be a galvanometer scanner.
- the document blank 102 can also be displaced relative to the machining head 122.
- the processor means 1 12, the storage means 1 14 and the interface 1 16 need not necessarily be part of the irradiation device 104. It is also possible to disassemble these elements as long as they are operatively connected to the irradiation device 104.
- the processor means 1 12, the memory means 1 14 and the interface 1 16 part of a separate computer system, which is wired or wirelessly connected to the irradiation device.
- the output 16 is first of all connected via the interface 16.
- the output graphics can be both a monochrome output graphic and an initially polychrome output graphic, which in the following is monochromatized.
- Such an output graphic 202 is shown by way of example in FIG. 2a.
- the output graphic 202 input via the interface 1 16 is first stored in the storage means 14.
- the output image 202 is rendered by execution of a corresponding program by the processor means 212 so that it can be applied to the card blank 102.
- at least two brightness levels of the monochrome output graphics 202 are first defined.
- FIG. 2 b shows a gray-scale-reduced graphic 204.
- the graphic 204 was further subjected to image enhancement after performing gray scale reduction by dithering.
- each of the sub-graphics 206, 208, 210, and 212 each contains only Pixels of the same brightness level.
- sub-graph 206 contains only pixels with a very light gray tone
- sub-graph 208 only pixels with a medium gray tone
- sub-graph 210 only pixels with a dark gray tone
- sub-graph 212 contains only pixels that are black. Not shown here is the partial graphic which contains only white pixels.
- the partial graphics 206, 208, 210 and 212 thus generated are subsequently stored in the memory 14.
- the partial graphs 206, 208, 210 and 212 are sequentially transferred to the card blank 102 by the laser controller 1 10 correspondingly driving the laser source 108.
- the beam 124 is successively aligned with the positions of the pixels to be formed on the card blank 102 by the processing head 122, and a laser pulse is delivered to the targeted pixel on the card blank 102 by driving the laser source 108 via the fiber coupling 120 and the processing head 122.
- a pixel of the desired gray level is generated at the point of impact of the laser pulse on the photosensitive layer. This is done in succession for all pixels of the partial graphic to be imaged. Only when the partial graphic is completely displayed on the card blank 102, the next partial graphic is loaded and imaged analogously on the card blank. Since the next partial graphic is a graphic of different gray levels, the laser source is first adjusted in terms of its output power to the gray level of the pixels to be generated.
- the output power of the laser must be correspondingly increased become.
- the generated document can be removed from the processing area by the conveyor 106. Subsequently, a new document blank 102 can be positioned below the processing head 122 of the irradiation device 100 by the conveyor 106 so that the personalization process can be run through again.
- the conveying device 106 can supply the already processed documents to a stacking device (not shown).
- the conveyor 106 can be designed so that it supplies the processed document blank 102 to a different tray in the event of an erroneous mapping of the output graphic, as those document blanks 102, on which the image of the output graphics has been correctly vonstatten gone.
- FIGS. 3a and 3b two possible brightness spectra of a graphic to be imaged are shown by way of example.
- FIG. 3 a shows a brightness spectrum 302 of a graph in which the number of pixels which have a specific brightness value is uniformly distributed over all brightness values.
- the brightness values of the individual pixels are shown in the brightness spectrum 302 on the x-axis, while the number of pixels per brightness value is plotted on the y-axis. Since this is an exemplary representation, another axis labeling has been dispensed with.
- brightness levels must first be defined.
- FIG. 3 a four exemplary intervals are shown, each of which corresponds to one brightness level.
- Each pixel whose brightness value falls within one of the intervals is, according to the invention, assigned to the brightness assigned to the corresponding interval. assigned value.
- the brightness value H1 is assigned to all pixels whose brightness width is in interval A, while all pixels whose brightness values lie in interval C, the brightness value H3 is obtained.
- the selection of the brightness values H1, H2, H3 and H4 can be adjusted such that there is an optimized contrast of the generated image. If, as shown in FIG.
- the number of pixels is distributed uniformly over the brightness values, for example, the brightness value H 1 of the interval A can be selected centered within the interval A. In some cases, however, the number of pixels is highly inhomogeneously distributed over the different brightness values. This is illustrated by way of example in FIG. 3b.
- the brightness spectrum 304 in FIG. 3b may be the spectrum of a tricolor flag. In this case, it may be useful not to choose the brightness levels or the intervals for the brightness values equidistantly, but to adapt them to accumulations in the brightness spectra. Using the example of FIG.
- each of the intervals includes one of the accumulation areas, which are represented by the sharp increase in the number of pixels per brightness value.
- this brightness value corresponds to that by which the clustering of the pixels is to be observed. This is exemplified by the brightness values H5, H6 and H7.
- the individual intervals differ greatly in their width and also the brightness value assigned to an interval is not centered within the interval.
- the choice of the intervals underlying the brightness levels can always be adapted to the underlying output graphics such that the contrast and the image quality of the graphics generated on the document blank are optimized.
- the document 400 includes a negative 402 and a Positive 404 an output graphic to be applied to the document.
- the graphic may be the portrait of the document owner.
- the document 400 contains a chip 406 with a memory area 408 and an interface 410. Via the interface 410, for example, the image underlying the positive 402 and the negative 404 can be stored in or read from the memory area 408 of the chip 406.
- the negative 402 can be compared with the positive 404 and the original of the graphic stored in the memory area 408.
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- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Credit Cards Or The Like (AREA)
- Electronic Switches (AREA)
- Laser Beam Printer (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20170203.2A EP3715142B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170202.4A EP3715141B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP21154723.7A EP3875284B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP21154722.9A EP3875283B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014211513.2A DE102014211513B4 (en) | 2014-06-16 | 2014-06-16 | Method and device for personalizing a document blank with a graphic |
PCT/EP2015/059194 WO2015193013A1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document blank by means of a graphic |
Related Child Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21154723.7A Division EP3875284B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP21154722.9A Division EP3875283B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170202.4A Division-Into EP3715141B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170202.4A Division EP3715141B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170203.2A Division-Into EP3715142B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170203.2A Division EP3715142B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3154793A1 true EP3154793A1 (en) | 2017-04-19 |
EP3154793B1 EP3154793B1 (en) | 2021-02-24 |
Family
ID=53175437
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21154723.7A Active EP3875284B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170203.2A Active EP3715142B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP15722106.0A Active EP3154793B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document blank by means of a graphic |
EP20170202.4A Active EP3715141B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP21154722.9A Active EP3875283B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
Family Applications Before (2)
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EP21154723.7A Active EP3875284B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP20170203.2A Active EP3715142B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
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Application Number | Title | Priority Date | Filing Date |
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EP20170202.4A Active EP3715141B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
EP21154722.9A Active EP3875283B1 (en) | 2014-06-16 | 2015-04-28 | Method and device for personalizing a document template with a graphic |
Country Status (4)
Country | Link |
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EP (5) | EP3875284B1 (en) |
CN (1) | CN106457876B (en) |
DE (1) | DE102014211513B4 (en) |
WO (1) | WO2015193013A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3613602A1 (en) * | 2018-08-23 | 2020-02-26 | Covestro Deutschland AG | Improved method for partial colouring of plastic parts |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003221894A1 (en) * | 2002-04-09 | 2003-10-27 | Digimarc Id Systems, Llc | Image processing techniques for printing identification cards and documents |
DE102005032997A1 (en) | 2005-07-14 | 2007-01-18 | Giesecke & Devrient Gmbh | Lattice image and method for its production |
DE102006029797A1 (en) * | 2005-07-28 | 2007-02-08 | MĂĽhlbauer Ag | Personalization method for forming an image on a plastic substrate and personalized security document |
EP2100747B1 (en) * | 2008-03-10 | 2015-02-25 | Maurer Electronics Gmbh | Method for copying a picture with embedded additional information onto a data carrier |
US8354611B2 (en) * | 2008-10-29 | 2013-01-15 | Coherent, Inc. | Laser engraving apparatus |
EP2181858A1 (en) * | 2008-11-04 | 2010-05-05 | Agfa-Gevaert N.V. | Security document and methods of producing it |
PL2322355T3 (en) * | 2009-11-13 | 2015-08-31 | Polska Wytwornia Papierow Wartosciowych S A | A method for making a latent image on a document substrate and a document substrate with a latent image |
DE102010053604A1 (en) * | 2010-12-06 | 2012-06-06 | Bundesdruckerei Gmbh | Modular laser personalization device and laser personalization system |
-
2014
- 2014-06-16 DE DE102014211513.2A patent/DE102014211513B4/en active Active
-
2015
- 2015-04-28 CN CN201580031625.7A patent/CN106457876B/en active Active
- 2015-04-28 EP EP21154723.7A patent/EP3875284B1/en active Active
- 2015-04-28 EP EP20170203.2A patent/EP3715142B1/en active Active
- 2015-04-28 EP EP15722106.0A patent/EP3154793B1/en active Active
- 2015-04-28 WO PCT/EP2015/059194 patent/WO2015193013A1/en active Application Filing
- 2015-04-28 EP EP20170202.4A patent/EP3715141B1/en active Active
- 2015-04-28 EP EP21154722.9A patent/EP3875283B1/en active Active
Also Published As
Publication number | Publication date |
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CN106457876A (en) | 2017-02-22 |
WO2015193013A1 (en) | 2015-12-23 |
DE102014211513A1 (en) | 2015-12-17 |
EP3875283A1 (en) | 2021-09-08 |
EP3154793B1 (en) | 2021-02-24 |
EP3875284B1 (en) | 2024-07-17 |
CN106457876B (en) | 2018-06-01 |
DE102014211513B4 (en) | 2018-11-22 |
EP3715141A1 (en) | 2020-09-30 |
EP3715141B1 (en) | 2021-12-01 |
EP3875283B1 (en) | 2024-07-17 |
EP3875284A1 (en) | 2021-09-08 |
EP3715142B1 (en) | 2021-12-01 |
EP3715142A1 (en) | 2020-09-30 |
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