EP2934893B1 - Method for monitoring intaglio printing and corresponding colour control patches - Google Patents
Method for monitoring intaglio printing and corresponding colour control patches Download PDFInfo
- Publication number
- EP2934893B1 EP2934893B1 EP13830185.8A EP13830185A EP2934893B1 EP 2934893 B1 EP2934893 B1 EP 2934893B1 EP 13830185 A EP13830185 A EP 13830185A EP 2934893 B1 EP2934893 B1 EP 2934893B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- control
- intaglio
- printed
- intaglio printing
- 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.)
- Active
Links
- 238000007639 printing Methods 0.000 title claims description 297
- 238000000034 method Methods 0.000 title claims description 51
- 238000012544 monitoring process Methods 0.000 title 1
- 239000000976 ink Substances 0.000 claims description 127
- 238000005259 measurement Methods 0.000 claims description 69
- 239000000758 substrate Substances 0.000 claims description 38
- 230000003287 optical effect Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 19
- 230000003749 cleanliness Effects 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 238000005530 etching Methods 0.000 description 18
- 238000007689 inspection Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 8
- 101150097169 RBBP8 gene Proteins 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000000424 optical density measurement Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010076 replication Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000017105 transposition Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 102100039524 DNA endonuclease RBBP8 Human genes 0.000 description 1
- 241001415961 Gaviidae Species 0.000 description 1
- 241001596784 Pegasus Species 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
- B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
- B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/02—Rotary intaglio printing presses for multicolour printing
- B41F9/021—Sheet printing presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/061—Inking devices
- B41F9/063—Using inking rollers
-
- 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
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
- B41N1/14—Lithographic printing foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2233/00—Arrangements for the operation of printing presses
- B41P2233/50—Marks on printed material
- B41P2233/51—Marks on printed material for colour quality control
Definitions
- the present invention relates in particular to a method for controlling intaglio printing, as well as to a control range intended for intaglio printing, in particular for the printing of securities, in particular banknotes.
- the present invention also relates to the use of such a control range for the control and, where appropriate, the adjustment of the printing parameters of an intaglio printing press.
- the intaglio is a secular printing technique which consists of printing patterns in relief by means of an intaglio printing plate (which is designated in the context of the present invention by the expression "plate of intaglio print ").
- the intaglio printing plate is inked on its surface by means of one or more inks. The surplus of ink off the engravings is then wiped and pushed inside the engravings.
- the printing plate thus inked and wiped is applied against a printable substrate (eg fiduciary paper) in a press exerting a high printing pressure and pressing the substrate against the printing plate so that the ink of the engravings is transferred to the substrate.
- a printable substrate eg fiduciary paper
- Intaglio printing presses as used for the production of securities, in particular banknotes, are for example described in Swiss Patent No. CH 477 293 A5 , European patent applications published under Nos. EP 0 091 709 A1 , EP 0 406 157 A1 , EP 0 415 881 A2 , EP 0 563 007 A1 , EP 0 873 866 A1 , EP 1 602 483 A1 , and international applications published under Nos.
- the WO 2012/140384 A2 relates to a method of printing tests with or without contact on a substrate using a printing machine, the printing being of the offset, serigraphy, flexographic, gravure printing type and the printing being carried out on a substrate test device constituting the type of substrate on which the machine is intended to print, the method comprising a step of printing on the substrate using the printing machine according to initial conditions for adjusting the machine and a step of print analysis against a reference test protocol.
- intaglio printing plates were hand-engraved in a soft metal plate, for example copper, brass or other suitable metal or metal alloy.
- the tools used by the engraver typically consisted of chisels or punches whose end was sharpened and adapted to the desired dimensions of the patterns to be engraved, the latter motifs consisting essentially of lines and curves modulated in dimensions, depending on the action exerted by the engraver, to produce tonal variations reproducing the half-tones of the image to be engraved, for example a portrait.
- the intaglio printing technique is particularly used in the field of the printing of securities, in particular for the printing of bank notes, intaglio printing remaining one of the printing techniques more difficult to counterfeit.
- the present Applicant has proposed an innovative approach for the production of intaglio printing plates, an approach which is described in the international application published under No. WO 03/103962 A1 .
- This method consists in generating a set of three-dimensional digital data consisting of pixels each representative of an elementary point to be etched in the surface of the plate, the etching being performed pixel by pixel on the basis of said three-dimensional digital data.
- a printing plate can be directly etched.
- a printing plate precursor preferably a metal plate carrying a polymer layer
- it is the polymer layer which is etched and the precursor thus etched is then used to manufacture printing plates by galvanic replication.
- Etching is also advantageously performed by laser.
- This etching process both direct and indirect, is implemented commercially by the Applicant under the CTiP® (Computer to Intaglio Plate®) designation and has become, so to speak, a standard in the security printing industry.
- the Figure 1 by way of illustration shows a black and white reproduction of a specimen of bank note produced by the Claimant and distributed to the public on the occasion of the XIX International Conference of Security Printers ("XIXth International Security Printers Conference") organized by Intergraf (www.intergraf.eu) and held during the month of May 2003 in Montreux (Switzerland ).
- This specimen representing Lord Byron, was produced according to the aforementioned CTiP® process, all the elements visible on the Figure 1 consisting of multicolored elements printed intaglio.
- the printer must in particular carry out an adjustment of the printing pressure (that is to say the pressure exerted between the intaglio printing plate and the substrate to be printed), the ink charge (i.e., the amount of ink applied to the intaglio printing plate), as well as the wiping.
- the printing pressure that is to say the pressure exerted between the intaglio printing plate and the substrate to be printed
- the ink charge i.e., the amount of ink applied to the intaglio printing plate
- the present invention aims to meet these needs.
- a general object of the present invention is therefore to improve the techniques and solutions of the prior art.
- an object of the present invention is to propose a solution enabling a printer to evaluate and measure in an objective (and quantifiable) way the capacity of a security design that can be printed intaglio.
- an object of the present invention is to propose a solution enabling a printer to objectively perform the basic adjustment of an intaglio printing press for the printing of a safety drawing, by example a bank note, based on objective and measurable control elements.
- Another object of the present invention is to propose a solution enabling a printer to evaluate and measure in an objective (and quantifiable) manner the effects of intaglio print parameters on the printed result, in particular the equilibrium. between the printing pressure and the ink charge as reflected on the printed result.
- Yet another object of the present invention is to propose a solution enabling a printer to quantify the variations in quality, density, positive and negative fattening of the printed lines (or "line gain") with respect to an expected result. and thus to limit or mitigate the effects of these variations on the print quality, thus ensuring a good repeatability of the print.
- Another object of the present invention is to propose a solution enabling a printer to identify and objectively and quantifiably diagnose the probable source of a possible printing problem, by relying on objective control means and measurable to allow it to include or exclude potential causes of the potential printing problem.
- the present invention satisfies these aims by providing a method for controlling intaglio printing whose characteristics are set forth in independent claim 1.
- printing pressure, ink charge, and wiping are print parameters that can affect intaglio printing.
- the printing pressure and the ink charge are adjusted until the measurements made in the printed control areas reflect an optimum balance between the printing pressure and the ink charge.
- Such an optimal balance is determined based on measurements made in the printed control areas, which measures preferably include a measure of optical density (" optical density "), line cleanliness (or “ raggedness ”) and fill rate of line (or " fill ").
- control ranges include at least one control range for each ink used, and measurements made in the printed control areas are made for each ink individually.
- the measurements made in the printed control areas include the measurement of a line cleanliness (" raggedness "), the measurement of a fill rate of line (“ fill ”) , and the measurement of an optical density according to a measurement standard determined, in particular according to ISO / IEC 13660: 2001 or ISO / IEC TS 24790: 2012 (which cancels and replaces ISO / IEC 13660: 2001).
- the measurement of the line cleanliness (" raggedness "), the measurement of the fill rate of the line (“ fill ”) as well as the measurement of the optical density (“ optical density ”) are performed on printed lines oriented substantially at ⁇ 45 ° with respect to a printing direction and preferably having a line width of between 30 ⁇ m and 200 ⁇ m.
- the measurements made in the printed control areas further include the measurement of a contrast, which measurement allows an objective evaluation of the printability of multi-tone elements.
- the measurements made in the printed control areas should preferably make it possible to constitute a sampling of measurements representative of the printing of engravings of various depths, in particular engravings whose depth varies within a range of values less than or equal to 70 ⁇ m.
- the method further comprises a step of verifying the printability of a security design to be printed intaglio by means of the intaglio printing plate, as soon as possible. when a printer has made a desired adjustment of said print parameters.
- the printing parameters of an intaglio printing press are controlled and, if necessary, adjusted, according to the measurements made in the printed control areas.
- the present invention also meets the above-mentioned objects by providing a control range whose characteristics are set forth in independent claim 13. Advantageous embodiments of this control range are presented in the description which follows and are the subject of the dependent claims.
- control range according to the present invention finds a particularly advantageous application for the purpose of allowing the control and, where appropriate, the adjustment of the printing parameters of an intaglio printing press, in particular the pressure of the printing press. print and ink charge.
- the present invention also relates to an etched plate for intaglio printing, in particular an intaglio printing plate or an intaglio printing plate precursor, comprising the abovementioned control range made in a portion of the plate. etched, the control pads being etched in the portion of the engraved plate, preferably in a portion forming a margin on an end portion of the etched plate.
- the present invention also relates to any printed substrate (for example printed sheets or a printed continuous strip) by means of an intaglio printing plate according to the invention.
- the Figure 2 schematically illustrates an intaglio printing press generally designated by reference numeral 1. More specifically, the Figure 2 shows an intaglio printing press 1 to the sheet comprising a sheet feed unit 2 for feeding sheets to be printed, an intaglio printing unit 3 for printing the sheets, and a sheet delivery unit 4 to collect the freshly printed sheets.
- the intaglio printing unit 3 comprises a printing cylinder 7 (in this example, it is a three-segment cylinder), a plate cylinder 8 (in this example, it is of a three-segment cylinder carrying three intaglio printing plates), an inking system comprising an ink collecting cylinder, or Orlof cylinder, 9 (here it is a three-segment blanket cylinder) carrying a corresponding number of blankets) for inking the surface of the intaglio printing plates carried by the cylinder plate holder 8, and an ink wiper system 10 for wiping the inked surface of the intaglio printing plates carried by the plate cylinder 8, before printing the sheets.
- a printing cylinder 7 in this example, it is a three-segment cylinder
- a plate cylinder 8 in this example, it is of a three-segment cylinder carrying three intaglio printing plates
- an inking system comprising an ink collecting cylinder, or Orlof cylinder
- the sheets are fed from the sheet feed unit 2 to a feed table, or feeder, and then transferred one by one to the printing cylinder 7.
- the sheets are then conveyed by the printing cylinder 7 to the point where between the printing cylinder 7 and the plate cylinder 8, where the intaglio printing itself takes place.
- the sheets are transferred from the printing cylinder 7 to a sheet conveyor system 15 for transport and delivery to the sheet delivery unit 4.
- the sheet conveyor system 15 conventionally includes a system sheet conveyor comprising a pair of endless chains driving a plurality of spaced apart gripper bars holding the sheets by their front portion (the freshly printed face of the sheets being oriented downward during the path of the sheets of the printing unit 3 to the leaf issuing unit 4), the sheets being successively transferred to a corresponding clip bar of the conveyor system.
- the optical inspection system 5 is advantageously a compliant inspection system. to that disclosed in the international application published under No. WO 2011/161656 A1 , which inspection system 5 includes a transfer mechanism and an inspection drum located at a transfer section between the impression cylinder 7 and the chain drive wheels of the sheet conveyor system 15.
- the system inspection 5 can alternatively be arranged in the path of the sheet conveyor system 15, for example in the image of the inspection systems described in FIG. international applications published under Nos. WO 97/36813 A1 , WO 97/37329 A1 , and WO 03/070465 A1 .
- Such inspection systems are in particular marketed by the Applicant under the designation of NotaSave® product.
- the printed sheets Prior to delivery, the printed sheets are preferably transported in front of a drying or curing unit 6 disposed after the inspection system 5 along the transport path of the sheet conveyor system 15. Drying or curing could if necessary, be carried out before the optical inspection of the sheets.
- the Figure 3 is a schematic view of the intaglio printing unit 3 of the intaglio printing press 1 of the Figure 2 .
- the printing unit 3 essentially comprises the printing cylinder 7, the plate cylinder 8 with its intaglio printing plates, the inking system with its collecting cylinder. inks 9, and the ink wiper system 10.
- the printing cylinder 7 and the plate cylinder 8 (as well as the ink collecting cylinder 9) are three-segment cylinders 7b, resp. 8b, each presenting three pits 7a, resp. 8a, where are typically the retaining means necessary for mounting the blankets (in the case of the printing cylinder 7 or the ink collecting cylinder 9) or intaglio printing plates (with respect to the cylinder door -plate 8).
- the inking system comprises in this example five inking devices 20, all of which cooperate with the ink collecting cylinder 9 which is in contact with the plate cylinder 8. It will thus be understood that the inking system illustrated is adapted for the indirect inking of the plate cylinder 8, namely intaglio printing plates, via the ink collecting cylinder 9.
- the inking devices 20 each comprise an inkwell comprising an inkwell roller Cooperating in this example with a pair of ink application rollers 22.
- a pair of ink application rollers 22 in turn have a corresponding pinch cylinder 23 which is in contact with the ink collecting cylinder 9.
- the surface of the pinch cylinders 23 is structured so as to have portions in relief corresponding to the areas of the intaglio printing plates to receive the corresponding color inks provided by the inking devices 20.
- both the printing cylinder 7 and the plate cylinder 8 are supported by a stationary (main) frame 50 of the printing press 1.
- the inking devices 20 (including the ink fountain roller 21 and ink application rollers 22) are supported in a mobile inking carriage 52, while the ink collecting cylinder 9 and the stencil cylinders 23 are supported in an intermediate carriage 51 located between the carriage of the inking carriage inking 52 and the stationary frame 50.
- the inking carriage 52 and the intermediate carriage 51 are advantageously suspended under support rails.
- numeral 52 designates the inking carriage in a recessed position indicated in broken lines. It is understood that the intermediate carriage 51 is also mobile.
- the double carriage configuration of the intaglio printing press 1 as illustrated in FIGS. Figures 2 and 3 corresponds essentially to the configuration described in the international applications published under Nos. WO 03/047862 A1 , WO 2011/077348 A1 , WO 2011/077350 A1 and WO 2011/077351 A1 already mentioned in the preamble.
- the ink wiper system 10 typically includes a wiper, wiper (or roller) 11 supported on and partially located in the wiper tub to engage the platen roller 8, cleaning means (not shown) for removing ink residues wiped from the surface of the wiper cylinder 11, and a drying blade (not shown) placed in contact with the surface of the wiper roll 11 to remove the wipe solution residues from the surface of the wiper roll 11.
- a wiper system Particularly suitable wiping is described in the international application published under No. WO 2007/116353 A1 .
- FIG. Figure 4 A schematic example of an intaglio printing plate, generally designated by the reference numeral 80, is illustrated in FIG. Figure 4 .
- This printing plate 80 is typically made of a suitable metal (for example nickel or brass, other metals being however conceivable) whose surface is provided with a wear-resistant coating (for example a coating of chromium).
- a suitable metal for example nickel or brass, other metals being however conceivable
- a wear-resistant coating for example a coating of chromium
- the front and end ends of the intaglio printing plate 80 are provided with a set of orifices for fixing the intaglio printing plate 80 on the circumference of a plate cylinder of an intaglio printing press (like the cylinder plate holder 8 of Figures 2 and 3 ).
- Suitable means are conventionally used to carry out engravings in the surface of the printing plate 80. These engravings can advantageously be made according to the principles set forth in the international applications published under Nos. WO 03/103962 A1 and WO 2009/138901 A1 , already mentioned above, both of which relate to the CTiP® technique developed by the Applicant. Other techniques may, however, be used to perform these etchings, and the present invention is not specifically limited to a particular etching technique.
- Reference numeral 100 in the Figure 4 designates an individual security design, very schematically represented by a simple rectangular shape, corresponding to a security impression to be made, for example a banknote, as illustrated in the Figure 1 .
- Reference numeral 100A denotes the set of safety drawings 100, repeated, as is conventionally the case, in the form of a matrix arrangement (here comprising five columns and eight rows), which is intended to be printed on the sheets .
- Reference numeral 150 designates a control range according to an embodiment of the invention illustrated very schematically, an essential function of which is to enable a printer to perform on the printed sheets. by means of the intaglio printing plate 80, various measures relating to intaglio printing.
- the control range 150 (170) is made in this example on the end portion of the printing plate 80, so that the corresponding print appears on the end portion of the sheets.
- FIG. 5 schematically illustrates an exemplary embodiment of a control range, generally designated by the reference numeral 150, according to a first embodiment of the invention, variants being however possible (in the image of the other example shown in FIG. Figure 7 ) without departing from the scope of the invention defined by the appended claims.
- the control range 150 illustrated in the Figure 5 comprises a set of control ranges distributed in a direction perpendicular to the printing direction I. More specifically, these control ranges consist of a predetermined set of control elements (here five in number) designated by the references A at E in the Figure 5 , which are repeated several times transversely to the printing direction I, as illustrated on the upper part of the Figure 5 .
- control ranges of the control range are each intended to be inked by means of a specific ink.
- the inks are five in number (which corresponds to the number of inking devices 20 in the press intaglio print 1 of Figures 2 and 3 ).
- References 1 to 5 in the Figure 5 designate the ink by means of which each control range is inked.
- the lower part of the Figure 5 is an enlarged view of the first five control ranges, designated by numerals 151 to 155, at the left end of the control range 150.
- the first control range 151 incorporates the characteristics of the first control element A.
- the second to fifth control ranges 152 to 155 respectively take the characteristics of the second to fifth control elements B to E.
- the other control ranges of the control range 150, to the right of the control range 151, such as represented on the upper part of the Figure 5 are not detailed on the lower part of the Figure 5 since they take up the same structures as those of the ranges 151 to 155.
- the dimensions of each control range are of the order of 4 mm in height and 5 mm in width.
- control areas 154, 155, 153 (which respectively correspond to the control elements D, E, C) at the left end of the control range 150 form a set which is inked with the same first intaglio ink 1. This is further represented by an index to 1 on the right side of the control range 153, a corresponding index being provided to identify the intaglio ink used for inking each range or set of control ranges.
- the control range 152 (corresponding to the control element B) is in turn inked by means of a second intaglio ink 2, while the control range 151 (corresponding to the control element A) is inked by means of a third intaglio ink 3, this being represented by an index corresponding to 2 , respectively to 3 , on the right side of the control range 152, respectively 153.
- These permutations between elements of control A to E and inks 1 to 5 are continued over the entire control range 150.
- the two control ranges immediately to the right of the control range 151 (which are not represented on the control part).
- control elements A to E are restored as control pads inked with all five inks taille to 5.
- the control elements A to C are reproduced in the form of control areas inked by means of the five intaglio inks 1 to 5.
- the control elements D and E are only returned in the form of control areas inked with the first intaglio ink 1 (like the control areas 154 and 155).
- This is an example of a non-limiting embodiment, and it is perfectly possible that all the control elements A to E are rendered in the form of control ranges inked by means of five inks intaglio 1 to 5.
- control ranges of the control range 150 comprise a set of lines and / or curves with orientations and dimensions (width and / or depth) varied, to make the desired measurements.
- the lines and / or curves are selected with particular regard to the following considerations.
- the intaglio printing depends on a vital factor, namely the printing pressure.
- the printing pressure has the effect of pushing the substrate more or less deeply inside the engravings to come into contact with the ink therein.
- Excessive printing pressure typically has the effect of potentially causing ink to spill out of the engravings (commonly referred to as "spitting"), which affects the sharpness and cleanliness of the printed lines.
- This overflow, or spitting is also influenced by the amount of ink actually present in the engravings.
- a balance must therefore be found between the printing pressure and the ink charge so as to ensure that both the thin (and shallow) lines and the wide (and deeper) lines can be properly printed.
- the spitting phenomenon may indeed occur due to excessive ink loading and / or excessive printing pressure, as these two print parameters may individually or jointly lead to overflow. ink outside engravings.
- the resistance of the paper to penetrate the engravings is lower for essentially vertically oriented engravings (i.e. engravings). substantially parallel to the printing direction I). Conversely, the resistance of the paper to penetrate the engravings is more important for engravings oriented substantially horizontally (i.e., engravings substantially perpendicular to the printing direction I).
- the printing direction I also coincides with the wiping direction, with the consequence that the vertically oriented engravings typically contain less ink than the substantially horizontally oriented engravings, which are perpendicular to the wiping direction. and therefore retain the ink better.
- control element A rendered in particular in the form of the control range 151 in the Figure 5 here it is a question of making a set of horizontal lines (that is to say perpendicular to the wiping direction I).
- this is a set of twenty lines having a line thickness (lw) of the order of 100 ⁇ m and a line spacing (ls) of the order of 100 ⁇ m. a line density of the order of 50 lines / cm.
- the control element A is subdivided into four quarters and the line depth (ld) is different for each quarter, in a range of values preferably less than or equal to 40 microns.
- four quarters of the control element A have depths of 12 ⁇ m, 18 ⁇ m, 25 ⁇ m and 35 ⁇ m.
- the control element A is mainly used to perform contrast measurements between the different quarters composing the control element, and thereby to evaluate the print quality of multi-tone elements.
- a multi-tone element is generally printed using a single intaglio ink and has tonal variations typically resulting from a variation in engraving depth in a range of values of the order of some microns to about 40 ⁇ m.
- the control element A replicates the typical variations of depths of engraving used for the creation of multi-tone elements.
- the control element D restored in particular in the form of the control range 154 in the Figure 5 is, so to speak, similar to the control element A, with however horizontal lines having a line thickness (lw) less (for example of the order of 60 microns) and a higher line density.
- the control element D replicates, not in its form but in the values of line width, line spacing and depths, typical values for the printing of micro-texts.
- This control element D is subdivided into four quarters, with a level of printability decreasing, that is to say that the decreasing printability makes the quarter concerned more difficult to print than the previous quarter, and therefore requires a increased printing pressure.
- the control element D thus allows a control of the printing pressure on four levels.
- control element D is only printed by means of the first intaglio ink 1.
- the printability of the control element D can be evaluated with the naked eye or, preferably, by a measurement of the fill rate of the line (" fill ") as explained below.
- the correct printing, that is to say without broken or broken lines, of at least one of the four fourths composing the control element D lays the foundation for a pressure adjustment adapted to the printing of 'fine elements, such as micro-texts.
- control elements B and C restored in particular in the form of the control ranges 152 and 153 in the Figure 5 , for their part, consist of a set of lines oriented at ⁇ 45 ° with respect to the printing direction I (and in the wiping direction).
- This orientation at ⁇ 45 ° of the lines is particularly advantageous in the context of the present invention, insofar as these lines have a median position which is neutral with respect to the orientation of the fibers of the paper and with respect to the wiping direction. .
- Measurements made by means of control elements B and C must thus make it possible to overcome in a certain measuring the effects of paper fibers and the wiping direction.
- These control elements B and C serve mainly to measure the balance between the printing pressure and the ink charge.
- the measurements preferably include measuring a line cleanliness (or " raggedness "), a line fill rate (or " fill "), and an optical density (or " Optical density ”) lines.
- control element C With regard more particularly to the control element C, reference is made here, by way of illustration, of a set of lines at ⁇ 45 ° having a line thickness (lw) of the order of 200 ⁇ m and a spacing line (ls) of the order 160 ⁇ m.
- control element B it is a question, again for illustrative purposes, of a set of lines at ⁇ 45 ° with a line thickness (lw) of the order of 100 ⁇ m and a spacing of line (ls) of the order 160 ⁇ m.
- control elements B and C are also subdivided into four quarters and the line depth (ld) is different for each quarter, in a range of values less than or equal to 70 ⁇ m (it being specified that the engraving depths raising to 100 ⁇ m or more, are also possible).
- This is advantageously a representative range of two types of lines that are characterized by a radically different behavior in terms of printability. Indeed, wide lines (such as those that characterize the control element C) have a natural tendency to allow the substrate to penetrate deeper into the engravings. Consequently, a disturbance of the balance between print pressure and ink charge will be more rapidly apparent on the wide lines of the control element C than on the thinner lines of the control element B.
- the 200 ⁇ m lines constituting the control element C are more sensitive to variations in the equilibrium between the printing pressure and the ink charge than the 100 ⁇ m lines constituting the control element B.
- the various constituent quarters of the control elements B and C thus make it possible advantageously to constitute a sampling of measurements (in particular line cleanness, line filling rate, and optical density of the lines) representative of the printing of engravings of various depths, in particular engravings whose depth varies in a range of values less than or equal to 70 ⁇ m.
- each control element B and C makes it possible to form a sampling of four measurements (one for each quarter).
- the fifth control element E restored in particular in the form of the control range 155 in the Figure 5 , is for illustrative purposes a set of horizontal lines (with a line density comparable to the lines of the control element D) combined with a pictorial pattern (here a portion of a pattern representing a pegasus). This element makes it possible in particular to check the printability of two-tone patterns by a visual appreciation.
- the Figure 6 schematically illustrates an example of an impression of the control range 150 of the Figure 5 , the printing of the control range 150 being generally designated by the reference numeral 160.
- the various control ranges presented above are thus restored, after intaglio printing of the substrate, in the form of a set of printed control areas corresponding to the various control elements A to E printed in the various colors corresponding to the intaglio inks 1 to 5 used.
- each control range corresponds to a corresponding printed control zone, the reference numerals 161 to 165 thus denoting the printed control areas corresponding respectively to the control ranges 151 to 155 of the Figure 5 .
- the sets of lines and / or curves constituting the control ranges are thus restored in the form of corresponding sets of lines and / or printed curves, on which it is possible to perform measurements, as discussed below.
- FIG. 7 schematically illustrates another embodiment of a control range according to a second embodiment of the invention, which control range is designated generally by the reference numeral 170.
- control range 170 illustrated in the Figure 7 comprises a set of control ranges distributed in a direction perpendicular to the printing direction I. More specifically, these control ranges consist of a predetermined set of control elements (here nine in number) designated by the references K at S in the Figure 7 , which are repeated several times transversely to the printing direction I, as illustrated on the upper part of the Figure 7 .
- control ranges of the control range are each intended to be inked by means of a specific ink.
- the inks are again five in number and the references 1 to 5 again designate the ink by means of which each control range is inked.
- the lower part of the Figure 7 is an enlarged view of the first nine control ranges, denoted by the reference numerals 171 to 179, at the left end of the control range 170.
- the first control range 171 has the characteristics of the first control element K.
- the second to ninth control areas 172 to 179 have the characteristics of the second to ninth control elements L to S.
- the other control ranges of the control range 170, to the right of the control range 171, as shown on the upper part of the Figure 7 are not detailed on the lower part of the Figure 7 because they take up the same structures as those of beaches 171 to 179.
- control ranges 171 to 177 are of the order of 4 mm in height and 4 mm in width
- dimensions of the two control ranges 178 and 179, present only at the two ends of the control range 170 are of the order of 4 mm in height and 5 mm in width.
- control elements K to S are restored as control pads inked with all five inks taille to 5.
- the control elements K and M to Q are reproduced in the form of control areas inked by means of the five intaglio inks 1 to 5.
- the control elements L, R and S are in turn restored in the form of control areas inked with a single or only part of the intaglio inks 1 to 5.
- This is another example of a non-limiting embodiment.
- control ranges of the control range 170 make it possible once again to evaluate in particular the effects of the printing pressure applied during the printing of the substrate, and to evaluate the effects of the ink charge applied during the inking of the intaglio printing plate 80.
- control elements K to S have been designed as follows.
- control elements in particular in the form of the control ranges 178 and 179 in the Figure 7 , they have the same characteristics as the control elements E and D of the Figure 5 .
- control element K restored in particular in the form of the control range 171 in the Figure 7 , in this example, it is a question of making a set of horizontal lines (that is to say perpendicular to the wiping direction I) similar to the set of lines forming the control element R.
- lw line thickness
- Is line spacing
- control element K (as well as the control element R) is subdivided into four quarters and the line depth (ld) is different for each quarter, in a range of values less than 40 ⁇ m.
- four quarters of the control element K (and R) have line depths (ld) of 12 ⁇ m, 18 ⁇ m, 25 ⁇ m and 35 ⁇ m.
- the control elements K and R are mainly used to measure the effects of the printing pressure.
- the control elements M to Q restored in particular in the form of the control ranges 173 and 177 in the Figure 7 , are constituted of a set of lines oriented at ⁇ 45 ° with respect to the printing direction I (in the image of the control elements B and C of the Figure 5 ), subdivided into four quarters.
- this is illustrative of lines having a line thickness (lw) of the order of 100 ⁇ m (element M) or 200 ⁇ m (elements N to Q) and a line spacing (ls) of the order of 160 microns, the line depth (ld) being varied in a range of values ranging from 8 microns to 70 microns, in the illustrated example.
- the control element O shown in the Figure 7 differs significantly from the control elements M, N, P and Q in that right lower quarter is not constituted by lines, but forms a solid area, identified by the reference numeral 180, namely a substantially continuous region consisting of a relatively large surface etching (of the order of 4 mm 2 surface in this example) and a depth of the order of 40 microns with a structuring, or grain, etching background of the order of 55 microns at 70 ⁇ m.
- the aim here is to produce a substantially uniform impression in which optical density measurement can be performed.
- An optical density measurement can also be performed on lines, but the flat 180 offers the advantage of a larger area in which it is easier to perform an optical density measurement.
- control element M to Q advantageously make it possible to constitute a sampling of measurements representative of the printing of engravings of various depths, in particular engravings whose depth varies within a range of lower values or equal to 70 ⁇ m.
- the control element M makes it possible to constitute a sampling of four measurements (one for each quarter) over four different depth values (for example 20 ⁇ m, 35 ⁇ m, 50 ⁇ m and 70 ⁇ m). acting as printed lines having a line thickness (lw) of 100 ⁇ m.
- the control elements N to Q make it possible to constitute a sampling of fifteen measurements (one for each quarter, except the solid 180) on fifteen values of different depths (for example 8 ⁇ m, 10 ⁇ m, 12 ⁇ m, 15 ⁇ m , 20 ⁇ m, 25 ⁇ m, 30 ⁇ m, 35 ⁇ m, 40 ⁇ m, 45 ⁇ m, 50 ⁇ m, 55 ⁇ m, 60 ⁇ m, 65 ⁇ m and 70 ⁇ m) in the case of printed lines having a line thickness (lw) of 200 .mu.m.
- sampling is more important for lines with a line thickness (lw) of 200 ⁇ m insofar as these lines are, as already mentioned, more sensitive to changes in the balance between the pressure of print and ink charge than 100 ⁇ m wide lines.
- the control element L restored in particular in the form of the control range 172 in the Figure 7 , consists of a set of thin, shallow lines, oriented at ⁇ 45 ° to the direction of printing, which is subdivided into four quarters.
- This control element L may in particular serve as an additional control element for measuring the effects of the printing pressure.
- control range 170 of the Figure 7 produces a corresponding set of printed control areas reflecting the various control elements K to S printed in the various colors corresponding to the intaglio inks 1 to 5 used.
- the sets of lines and / or curves constituting the control ranges of the control range 170 are thus restored in the form of corresponding sets of lines and / or printed curves, on which it is possible to perform measurements, as discussed below. This also applies to the solid 180.
- the Figure 8 is a schematic diagram illustrating the main steps of a method for adjusting the print parameters of an intaglio printing press (for example a printing press according to the Figures 2 and 3 ) according to an exemplary implementation of the invention.
- This method involves first (step S10) the preparation and supplying of an intaglio printing plate (like the intaglio printing plate 80 illustrated in FIG. Figure 4 ) provided with a control range according to one embodiment of the invention, for example the control range 150 or 170 discussed above.
- the printer then proceeds (in step S12) to a presetting of the printing parameters of the intaglio printing press, in particular the printing pressure, the ink charge, and the printing press. wiping.
- These are nominal parameters generally recommended by the manufacturer of the intaglio printing press and which must make it possible to perform an intaglio printing of good bill, with the understanding that a subsequent adjustment of these parameters is typically necessary in practice.
- the printer can proceed to print test sheets (in step S14) by means of the intaglio printing plate provided with the control range.
- step S16 measurements can then be made (step S16) on the printed control areas corresponding to the control ranges of the control range, in particular for the purpose of checking the printing pressure and the load. ink (step S18), and if necessary to make corresponding adjustments (step S20) before starting a new print.
- the printer will try in practice to find an optimal balance between the printing pressure and the ink charge, and the measurements made in the printed control areas must in particular make it possible to find this optimal balance.
- the control element D must make it possible to check whether a minimum printing pressure value is reached, and the control elements B and C must make it possible to quantitatively measure the degree of spitting of the lines, that is to say as to whether the balance between printing pressure and ink charge is good or not, this on two types of characteristic lines as discussed above.
- the control element A of the control range 150 completes the analysis by allowing a measurement of the resultant contrast values representative of the balance between printing pressure and ink charge.
- the said quantitative measurements are carried out in the printed control zones rendering lines oriented at ⁇ 45 ° with respect to the printing direction I (in the image of the control zones printed 162, 163 restoring the control elements B and C of the control range 150 or the printed control areas restoring the control elements M to Q of the control range 170).
- These quantitative measures preferably include the measurement of a line cleanliness, a degree of line filling and an optical density according to a given standard, in particular according to ISO / IEC TS 24790: 2012 (accessible on the site). of the International Organization for Standardization, www-iso-org), the first edition of which was published on August 15, 2012. This standard cancels and replaces the previous standard ISO / IEC 13660: 2001 which has been technically revised, but remains the case appropriate for the implementation of the present invention.
- the cleanliness of the line is in particular measured by determining the "raggedness " within the meaning of clauses 3.28 and 5.3.6 of ISO / IEC TS 24790: 2012.
- the degree of line filling is measured by determining the " fill " within the meaning of clauses 3.12 and 5.3.7 of ISO / IEC TS 24790: 2012.
- optical density this is measured according to clauses 3.21 and 3.26 of ISO / IEC TS 24790: 2012.
- the Figures 9 and 10 to illustrate more concretely what it is about, the Figure 9 schematically illustrating a portion of a printed line designated by reference numeral 200.
- the Figure 9 shows a printed line 200 whose optical density is measured, it is of course understood that the optical density could be measured on any suitable printed structure, in particular a printed area resulting from the printing of the solid color 180 of the Figure 7 .
- Raggedness according to ISO / IEC TS 24790: 2012 is a measure of the degree of sharpness of a line with respect to a standard line threshold (or " edge threshold "). The measure of " raggedness " is performed according to the guidelines mentioned in clause 5.3.6 of ISO / IEC TS 24790: 2012, namely by first determining the edge threshold defined as the reflectance level, R 40 , in a reflectance curve of a line (cf. Figure 10 ) corresponding to 40% of the transition of a minimum reflectance value R min (typically corresponding to the measured reflectance of the printed line 200) to a maximum reflectance value R max (typically corresponding to the measured reflectance of a non-reflective portion).
- the two fictional lines 210 in the Figure 9 schematically illustrate the line threshold corresponding to the reflectance value R 40 thus determined. Then, a measurement of the standard deviation of the variations, or " residuals ", 250 with respect to the thresholds of line 210 is carried out, to arrive at a quantification of the " raggedness ".
- the " fill " according to ISO / IEC TS 24790: 2012 is a measure of the degree (or rate) of filling of a line, carried out according to the guidelines mentioned in clause 5.3.7 of ISO / IEC TS 24790: 2012.
- the transposition in an intaglio printing plate of the control range and the control ranges according to the present invention can be carried out according to the principles already stated in the international applications.
- WO 03/103962 A1 and WO 2009/138901 A1 together with the safety drawing to be printed intaglio.
- the transposition can be carried out, preferably by laser etching, either directly in a printing plate or indirectly in a printing plate precursor, this precursor being then used to produce several printing plates by galvanic replication.
- the transposition of the generated patterns advantageously comprises the generation of a set of three-dimensional digital data consisting of pixels each representative of an elementary point to be etched in the surface of the printing plate or the printing plate precursor, etching as such being operated pixel by pixel on the basis of these three-dimensional digital data.
- the present invention also encompasses any engraved plate for intaglio printing (especially any intaglio printing plate or intaglio printing plate precursor) having a control range according to the present invention. .
- control ranges and control ranges specifically illustrated in the Figures 5 and 7 are examples of control patterns, possibly more complex, and control patterns, it being understood that the control ranges must essentially make it possible to measure the effects of the intaglio print parameters, in particular the printing pressure and the load. ink.
- control range can be adapted to according to the needs, in particular the number of inks applied to the intaglio printing plate. The invention is as such applicable regardless of the number of inks used.
- control ranges directly in the security drawing to be printed, in place of or in addition to control ranges of a control range as discussed above arranged in the margin of the drawing of FIG. security.
- the claimed control method is thus not limited to the use of a specific control range, however, it is noted that a specific control range arranged in the margin of the safety drawing has the advantage of not affecting the drawing. as such and not to restrict designers' choices.
- the above-mentioned measurements made in the printed control areas can be carried out by means of any suitable measuring tool. It may be a device of LabQMD type as already mentioned above or an inspection table of the type described in the international application published under No. WO 2012/131581 A1 and marketed by the Applicant under the name ColorCheck III. As such, an automated or semi-automated control of the intaglio print quality is perfectly conceivable in the context of the present invention. It could also be envisaged that these measurements are carried out online, during intaglio printing, for example by means of a suitable inspection device placed in the intaglio printing press, in the image inspection system 5 shown on the Figure 2 .
- control ranges for evaluating and measuring the wiping of the printing plate another parameter characterizing intaglio printing. That being so, it is preferable to evaluate the quality of the wiping on the entire printed substrate and, if necessary, to make adjustments. correspondents. Measurement of wiping by one or more control ranges may not necessarily be representative of the wiping quality of the entire printed substrate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Printing Methods (AREA)
- Rotary Presses (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
La présente invention concerne notamment un procédé de contrôle d'une impression taille-douce, ainsi qu'une gamme de contrôle destinée à l'impression taille-douce, en particulier pour l'impression de papiers-valeurs, notamment de billets de banque. La présente invention concerne également l'utilisation d'une telle gamme de contrôle pour le contrôle et, le cas échéant, l'ajustement des paramètres d'impression d'une presse d'impression taille-douce.The present invention relates in particular to a method for controlling intaglio printing, as well as to a control range intended for intaglio printing, in particular for the printing of securities, in particular banknotes. The present invention also relates to the use of such a control range for the control and, where appropriate, the adjustment of the printing parameters of an intaglio printing press.
La taille-douce est une technique d'impression séculaire qui consiste à imprimer des motifs en relief au moyen d'une plaque d'impression gravée en creux (laquelle est désignée dans le cadre de la présente invention par l'expression « plaque d'impression taille-douce »). La plaque d'impression taille-douce est encrée sur sa surface au moyen d'une ou plusieurs encres. Le surplus d'encre hors des gravures est ensuite essuyé et poussé à l'intérieur des gravures. La plaque d'impression ainsi encrée et essuyée est appliquée contre un substrat imprimable (par exemple du papier fiduciaire) dans une presse exerçant une haute pression d'impression et pressant le substrat contre la plaque d'impression afin que l'encre des gravures soit transférée sur le substrat. Le résultat est un document comportant un motif imprimé reflétant les motifs gravés avec un relief ou gaufrage additionnel, en registre avec le motif imprimé, qui reflète la profondeur des gravures et qui est typiquement reconnaissable au toucher.The intaglio is a secular printing technique which consists of printing patterns in relief by means of an intaglio printing plate (which is designated in the context of the present invention by the expression "plate of intaglio print "). The intaglio printing plate is inked on its surface by means of one or more inks. The surplus of ink off the engravings is then wiped and pushed inside the engravings. The printing plate thus inked and wiped is applied against a printable substrate (eg fiduciary paper) in a press exerting a high printing pressure and pressing the substrate against the printing plate so that the ink of the engravings is transferred to the substrate. The result is a document with a printed pattern reflecting the engraved patterns with additional relief or embossing, in register with the printed pattern, which reflects the depth of the engravings and which is typically recognizable by touch.
Des presses d'impression taille-douce, telles qu'utilisées pour la production de papiers-valeurs, en particulier de billets de banque, sont par exemple décrites dans le brevet suisse No.
La
Pendant longtemps, les plaques d'impression taille-douce furent gravées à la main dans une plaque en métal doux, par exemple en cuivre, en laiton ou autre métal ou alliage de métaux adéquat. Les outils utilisés par le graveur étaient typiquement constitués de burins ou poinçons dont l'extrémité était affûtée et adaptée aux dimensions souhaitées des motifs à graver, ces derniers motifs étant essentiellement constitués de lignes et de courbes modulées en dimensions, en fonction de l'action exercée par le graveur, pour produire des variations de tons restituant les demi-teintes de l'image à graver, par exemple un portrait.For a long time, intaglio printing plates were hand-engraved in a soft metal plate, for example copper, brass or other suitable metal or metal alloy. The tools used by the engraver typically consisted of chisels or punches whose end was sharpened and adapted to the desired dimensions of the patterns to be engraved, the latter motifs consisting essentially of lines and curves modulated in dimensions, depending on the action exerted by the engraver, to produce tonal variations reproducing the half-tones of the image to be engraved, for example a portrait.
Plus récemment des techniques photo-lithographiques ont été proposées pour faciliter le transfert d'images sur les plaques d'impression taille-douce, ainsi que des procédés de gravure assistés par ordinateur.More recently photo-lithographic techniques have been proposed to facilitate the transfer of images on intaglio printing plates, as well as computer-assisted engraving processes.
La technique d'impression taille-douce est notamment utilisée dans le domaine de l'impression de papiers-valeurs, en particulier pour l'impression de billets de banque, l'impression taille-douce restant l'une des techniques d'impression les plus difficiles à contrefaire.The intaglio printing technique is particularly used in the field of the printing of securities, in particular for the printing of bank notes, intaglio printing remaining one of the printing techniques more difficult to counterfeit.
Dans le cadre de l'impression de papiers-valeurs, en particulier l'impression de billets de banque, des techniques ont été développées pour assister le graveur dans sa tâche, notamment en vue de réduire le temps de gravure nécessaire ainsi que le temps de production des plaques d'impression. L'approche adoptée jusqu'à encore très récemment consistait à produire un unique original gravé (à la main ou assisté par des moyens techniques de gravure) représentant un seul document à imprimer, et à répliquer cet original autant de fois que nécessaire pour produire une plaque d'impression comportant plusieurs répliques identiques dudit original. Selon cette approche, la technique de gravure employée suit essentiellement celle d'un graveur, c'est-à-dire que chaque motif est gravé selon le tracé de la ligne ou courbe concernée, c'est-à-dire de manière essentiellement vectorielle (voir par exemple la demande internationale publiée sous le No.
La présente Demanderesse a proposé une approche innovante pour la production de plaques d'impression taille-douce, approche qui est décrite dans la demande internationale publiée sous le No.
Contrairement à l'approche antérieure qui consistait à fabriquer un unique original gravé représentant un seul document à imprimer, une plaque dans son ensemble peut être gravée en une seule phase, sans passer par le processus fastidieux de réplication d'un original. Selon la technique décrite dans la demande internationale No.
Un avantage considérable de la technique susmentionnée réside dans le fait qu'elle est essentiellement indépendante de la complexité des motifs à graver, alors que les techniques antérieures sont tributaires du niveau de complexité des gravures à réaliser.A considerable advantage of the aforementioned technique lies in the fact that it is essentially independent of the complexity of the patterns to be etched, whereas the prior techniques depend on the level of complexity of the etchings to be made.
Une évolution de la technique décrite dans la demande internationale No.
Ces diverses techniques assistées par ordinateur ont permis le développement d'un vaste éventail d'éléments de sécurité exploitant les propriétés avantageuses de l'impression taille-douce, parmi lesquels notamment des éléments bi-tons (« dual-tone ») ou multi-tons (« multi-tone ») qui exploitent les variations de tonalité de l'encre taille-douce, des fonds continus (« continuous background»), des images latentes (« latent images »), des micro-impressions en positif ou négatif (« positive / negative micro-print »), des éléments tactiles, etc. Grâce à ces techniques, des éléments de sécurité de haute complexité, permettant de lutter efficacement contre la contrefaçon, peuvent être réalisés. Des exemples illustratifs sont présentés notamment dans les demandes internationales publiées sous les Nos.
La
Une difficulté résultant de la mise à disposition des techniques modernes pour la réalisation d'éléments taille-douce réside dans le fait que le graveur (on peut également parler de « designer » dans la mesure où le dessin de sécurité en taille-douce est dorénavant réalisé dans un environnement informatique) dispose d'une liberté quasi illimitée s'agissant notamment de la définition des dimensions (largeur de ligne, profondeur, etc.) et des profils (carré, en « U », en « V », etc.) des gravures. Cette liberté n'est toutefois pas directement transposable à l'impression, à savoir que n'importe quel type de gravure n'est pas nécessairement imprimable. L'impression taille-douce reste soumise à des contraintes physiques et mécaniques dont il n'est pas possible de s'affranchir. A titre d'illustration extrême, il est théoriquement possible de concevoir et réaliser des gravures de fine largeur et de grande profondeur, par exemple une gravure présentant une largeur de ligne de 10 µm pour une profondeur de 100 µm, mais une telle structure peut difficilement être encrée et ne peut être correctement imprimée dans la mesure où le substrat ne peut pas se déformer pour « chercher » l'encre dans une telle gravure. De même, une gravure de large surface (plusieurs mm2) n'est pas imprimable sans qu'il soit prévu des structures adéquates de retenue de l'encre à l'intérieur de la gravure. En effet, en l'absence de telles structures de retenue de l'encre, l'essuyage de la plaque d'impression taille-douce conduirait alors à une évacuation trop importante de l'encre appliquée à l'intérieur de la gravure. Des compromis doivent donc être faits en pratique, ces compromis impliquant en particulier une certaine corrélation entre la largeur de ligne, la profondeur de gravure, et le profil de gravure. Ces compromis doivent également tenir compte de l'ensemble du dessin de sécurité à imprimer en taille-douce, car même si un élément individuel est potentiellement imprimable avec certains paramètres d'impression, ces paramètres d'impression pourraient ne pas être adaptés pour l'impression des autres éléments du dessin de sécurité. La qualité d'une impression taille-douce est ainsi directement liée à la qualité de réalisation de la plaque. Il convient également de relever que d'autres facteurs influencent la qualité d'une impression taille-douce, à savoir notamment :
- la qualité et la complexité du substrat à imprimer, en particulier l'intégration d'éléments de sécurité de plus en plus variés et nombreux ;
- les encres taille-douce qui présentent typiquement des variations de viscosité, des formulations différentes, diverses propriétés de séchage, etc. ;
- les réglages machines, en particulier la pression d'impression, l'encrage, les réglages des contacts, la température, etc.
- the quality and complexity of the substrate to be printed, in particular the integration of increasingly varied and numerous security features;
- platinum inks which typically exhibit viscosity variations, different formulations, various drying properties, etc. ;
- machine settings, especially printing pressure, inking, contact settings, temperature, etc.
A propos des réglages machines, l'imprimeur doit en particulier procéder à un réglage de la pression d'impression (c'est-à-dire la pression exercée entre la plaque d'impression taille-douce et le substrat à imprimer), de la charge d'encre (c'est-à-dire de la quantité d'encre appliquée sur la plaque d'impression taille-douce), ainsi que de l'essuyage. Ces paramètres d'impression influent notablement le résultat de l'impression taille-douce. La maîtrise de ces divers paramètres d'impression est donc cruciale, en particulier afin d'assurer une bonne répétabilité de l'impression et éviter des variations trop importantes en matière de qualité d'impression.With regard to the machine settings, the printer must in particular carry out an adjustment of the printing pressure (that is to say the pressure exerted between the intaglio printing plate and the substrate to be printed), the ink charge (i.e., the amount of ink applied to the intaglio printing plate), as well as the wiping. These print settings significantly affect the result of intaglio printing. Controlling these various print parameters is therefore crucial, in particular to ensure good print repeatability and to avoid excessive variations in print quality.
Dans la pratique, l'imprimeur est donc essentiellement confronté à deux problèmes principaux, à savoir :
- (i) s'assurer que l'ensemble des gravures formant le dessin de sécurité à imprimer en taille-douce soient effectivement imprimables (l'on peut alors parler d'une vérification de l'imprimabilité du dessin de sécurité et d'une validation des gravures) ; et
- (ii) s'assurer par ailleurs que l'ensemble des éléments taille-douce formant le dessin de sécurité puissent être imprimés avec une régularité et une qualité constante, et ceci avec des paramètres d'impression les plus adaptés à une production de masse (l'on peut alors parler d'une vérification de la répétabilité et de la variabilité de l'impression).
- (i) ensure that all engravings forming the security print to be intaglio printed are indeed printable (it is then possible to speak of a verification of the printability of the safety drawing and a validation engravings); and
- (ii) also ensure that all the intaglio elements forming the safety pattern can be printed with a regularity and a constant quality, and this with printing parameters most suitable for mass production ( one can then speak of a verification of the repeatability and the variability of the printing).
Cela nécessite toutefois que l'imprimeur puisse objectivement évaluer et mesurer ces caractéristiques sur le résultat final tel qu'imprimé.This however requires that the printer can objectively evaluate and measure these characteristics on the final result as printed.
La présente invention a pour objet de répondre à ces besoins.The present invention aims to meet these needs.
Un but général de la présente invention est donc d'améliorer les techniques et solutions de l'art antérieur.A general object of the present invention is therefore to improve the techniques and solutions of the prior art.
Plus particulièrement, un but de la présente invention est de proposer une solution permettant à un imprimeur d'évaluer et mesurer d'une manière objective (et quantifiable) la capacité d'un dessin de sécurité à pouvoir être imprimé en taille-douce.More particularly, an object of the present invention is to propose a solution enabling a printer to evaluate and measure in an objective (and quantifiable) way the capacity of a security design that can be printed intaglio.
Par ailleurs, un but de la présente invention est de proposer une solution permettant à un imprimeur d'effectuer de manière objective le réglage de base d'une presse d'impression taille-douce pour l'impression d'un dessin de sécurité, par exemple un billet de banque, en se basant sur des éléments de contrôle objectifs et mesurables.Furthermore, an object of the present invention is to propose a solution enabling a printer to objectively perform the basic adjustment of an intaglio printing press for the printing of a safety drawing, by example a bank note, based on objective and measurable control elements.
Un autre but de la présente invention est de proposer une solution permettant à un imprimeur d'évaluer et mesurer d'une manière objective (et quantifiable) les effets des paramètres d'impression taille-douce sur le résultat imprimé, en particulier l'équilibre entre la pression d'impression et la charge d'encre tel qu'il est reflété sur le résultat imprimé.Another object of the present invention is to propose a solution enabling a printer to evaluate and measure in an objective (and quantifiable) manner the effects of intaglio print parameters on the printed result, in particular the equilibrium. between the printing pressure and the ink charge as reflected on the printed result.
Encore un autre but de la présente invention est de proposer une solution permettant à un imprimeur de quantifier les variations de qualité, de densité, d'engraissement positif et négatif des lignes imprimées (ou « gain de ligne ») par rapport à un résultat escompté, et ainsi de limiter ou atténuer les effets de ces variations sur la qualité d'impression, assurant de la sorte une bonne répétabilité de l'impression.Yet another object of the present invention is to propose a solution enabling a printer to quantify the variations in quality, density, positive and negative fattening of the printed lines (or "line gain") with respect to an expected result. and thus to limit or mitigate the effects of these variations on the print quality, thus ensuring a good repeatability of the print.
Un autre but de la présente invention est de proposer une solution permettant à un imprimeur d'identifier et de diagnostiquer objectivement et de manière quantifiable la source probable d'un éventuel problème d'impression, en s'appuyant sur des moyens de contrôle objectifs et mesurables lui permettant d'inclure ou exclure les causes potentielles dudit problème d'impression éventuel.Another object of the present invention is to propose a solution enabling a printer to identify and objectively and quantifiably diagnose the probable source of a possible printing problem, by relying on objective control means and measurable to allow it to include or exclude potential causes of the potential printing problem.
Pour répondre à ces buts, l'invention est définie dans les revendications indépendantes.To meet these aims, the invention is defined in the independent claims.
Plus précisément, la présente invention répond à ces buts en proposant un procédé de contrôle d'une impression taille-douce dont les caractéristiques sont énoncées dans la revendication indépendante 1.More specifically, the present invention satisfies these aims by providing a method for controlling intaglio printing whose characteristics are set forth in
Par « impression taille-douce » au sens de l'invention, il convient de comprendre un processus d'impression impliquant :
- (i) l'encrage d'au moins une plaque d'impression taille-douce avec au moins une encre taille-douce ;
- (ii) l'essuyage de la plaque d'impression taille-douce ainsi encrée ; et
- (iii) l'impression d'un substrat au moyen de la plaque d'impression taille-douce ainsi essuyée, l'impression du substrat impliquant l'application du substrat contre la plaque d'impression taille-douce à une pression d'impression. Dans le cas d'une impression taille-douce, il convient de comprendre que la pression d'impression exercée est typiquement très élevée. Dans le domaine de l'impression taille-douce, la pression linéaire exercée lors de l'impression est ainsi typiquement de l'ordre de 10'000 N/cm. On peut donc parler de «haute pression d'impression » ou de « pression d'impression élevée » par opposition aux pressions d'impression comparativement marginales appliquées par exemple dans le domaine de l'impression offset.
- (i) inking at least one intaglio printing plate with at least one intaglio ink;
- (ii) wiping the intaglio printing plate thus inked; and
- (iii) printing a substrate using the intaglio printing plate thus wiped, the printing of the substrate involving the application of the substrate against the intaglio printing plate at a printing pressure . In the case of intaglio printing, it should be understood that the printing pressure exerted is typically very high. In the field of intaglio printing, the linear pressure exerted during printing is thus typically of the order of 10'000 N / cm. One can thus speak of "high printing pressure" or "high printing pressure" as opposed to comparatively marginal printing pressures applied for example in the field of offset printing.
Dans ce contexte, la pression d'impression, la charge d'encre et l'essuyage constituent des paramètres d'impression susceptibles d'affecter l'impression taille-douce.In this context, printing pressure, ink charge, and wiping are print parameters that can affect intaglio printing.
Le procédé selon l'invention comporte ainsi les étapes suivantes :
- (a) définir sur la plaque d'impression taille-douce des plages de contrôle conçues de manière à permettre notamment d'évaluer les effets de la pression d'impression appliquée lors de l'impression (iii) du substrat et d'évaluer les effets de la charge d'encre appliquée lors de l'encrage (i) de la plaque d'impression taille-douce, lesquelles plages de contrôle sont gravées dans une portion de la plaque d'impression taille-douce afin de produire des zones de contrôle imprimées correspondantes sur le substrat ;
- (b) réaliser des mesures dans les zones de contrôle imprimées permettant d'évaluer la pression d'impression appliquée lors de l'impression (iii) du substrat (afin de déterminer si cette pression d'impression est adéquate ou non) ; et
- (c) réaliser des mesures dans les zones de contrôle imprimées permettant d'évaluer la charge d'encre appliquée lors de l'encrage (i) de la plaque d'impression taille-douce (afin de déterminer si cette charge d'encre est adéquate ou non).
- (a) defining on the intaglio printing plate control ranges designed in such a way as, in particular, to evaluate the effects of the printing pressure applied during the printing (iii) of the substrate and to evaluate the effects of the ink charge applied during inking (i) of the intaglio printing plate, which control strips are etched in a portion of the intaglio printing plate to produce corresponding printed control areas on the substrate;
- (b) performing measurements in the printed control areas for evaluating the printing pressure applied during printing (iii) of the substrate (to determine whether or not this printing pressure is adequate); and
- (c) performing measurements in the printed control areas for evaluating the ink charge applied during the inking (i) of the intaglio printing plate (to determine if this ink charge is adequate or not).
Selon l'invention, la pression d'impression et la charge d'encre sont ajustées jusqu'à ce que les mesures réalisées dans les zones de contrôle imprimées reflètent un équilibre optimal entre la pression d'impression et la charge d'encre. Un tel équilibre optimal est déterminé sur la base de mesures réalisées dans les zones de contrôle imprimées, lesquelles mesures incluent préférablement une mesure de la densité optique (ou « optical density »), de la propreté de ligne (ou « raggedness ») et du taux de remplissage de ligne (ou « fill »).According to the invention, the printing pressure and the ink charge are adjusted until the measurements made in the printed control areas reflect an optimum balance between the printing pressure and the ink charge. Such an optimal balance is determined based on measurements made in the printed control areas, which measures preferably include a measure of optical density (" optical density "), line cleanliness (or " raggedness ") and fill rate of line (or " fill ").
S'agissant de la charge d'encre, dans l'éventualité où la plaque d'impression taille-douce est encrée au moyen d'une pluralité d'encres différentes (ce qui est typiquement le cas en pratique), les plages de contrôle comprennent au moins une plage de contrôle pour chaque encre utilisée, et les mesures réalisées dans les zones de contrôle imprimées sont réalisées pour chaque encre individuellement.With regard to the ink charge, in the event that the intaglio printing plate is inked by means of a plurality of different inks (which is typically the case in practice), the control ranges include at least one control range for each ink used, and measurements made in the printed control areas are made for each ink individually.
Selon un mode de réalisation préféré de l'invention, les mesures réalisées dans les zones de contrôle imprimées incluent la mesure d'une propreté de ligne (« raggedness »), la mesure d'un taux de remplissage de ligne (« fill »), et la mesure d'une densité optique (« optical density ») selon une norme de mesure déterminée, en particulier selon la norme ISO/IEC 13660:2001 ou la norme ISO/IEC TS 24790:2012 (laquelle annule et remplace la norme ISO/IEC 13660:2001). De manière avantageuse, la mesure de la propreté de ligne (« raggedness »), la mesure du taux de remplissage de ligne (« fill ») ainsi que la mesure de la densité optique (« optical density ») sont effectuées sur des lignes imprimées orientées essentiellement à ±45° par rapport à un sens d'impression et présentant préférablement une largeur de ligne comprise entre 30 µm et 200 µm.According to a preferred embodiment of the invention, the measurements made in the printed control areas include the measurement of a line cleanliness (" raggedness "), the measurement of a fill rate of line (" fill ") , and the measurement of an optical density according to a measurement standard determined, in particular according to ISO / IEC 13660: 2001 or ISO / IEC TS 24790: 2012 (which cancels and replaces ISO / IEC 13660: 2001). Advantageously, the measurement of the line cleanliness (" raggedness "), the measurement of the fill rate of the line (" fill ") as well as the measurement of the optical density (" optical density ") are performed on printed lines oriented substantially at ± 45 ° with respect to a printing direction and preferably having a line width of between 30 μm and 200 μm.
Par ailleurs, il est également avantageux que les mesures réalisées dans les zones de contrôle imprimées incluent en outre la mesure d'un contraste, laquelle mesure permet une évaluation objective de l'imprimabilité d'éléments multi-tons.On the other hand, it is also advantageous that the measurements made in the printed control areas further include the measurement of a contrast, which measurement allows an objective evaluation of the printability of multi-tone elements.
Les mesures réalisées dans les zones de contrôle imprimées doivent préférablement permettre de constituer un échantillonnage de mesures représentatives de l'impression de gravures de profondeurs variées, en particulier des gravures dont la profondeur varie dans une gamme de valeurs inférieures ou égales à 70 µm.The measurements made in the printed control areas should preferably make it possible to constitute a sampling of measurements representative of the printing of engravings of various depths, in particular engravings whose depth varies within a range of values less than or equal to 70 μm.
Selon un mode de réalisation avantageux de l'invention, le procédé comporte en outre une étape consistant à vérifier l'imprimabilité d'un dessin de sécurité devant être imprimé en taille-douce au moyen de la plaque d'impression taille-douce, dès lors qu'un imprimeur a procédé à un réglage désiré desdits paramètres d'impression.According to an advantageous embodiment of the invention, the method further comprises a step of verifying the printability of a security design to be printed intaglio by means of the intaglio printing plate, as soon as possible. when a printer has made a desired adjustment of said print parameters.
Selon un autre mode de réalisation avantageux de l'invention, les paramètres d'impression d'une presse d'impression taille-douce sont contrôlés et, le cas échéant, ajustés, en fonction des mesures réalisées dans les zones de contrôle imprimées.According to another advantageous embodiment of the invention, the printing parameters of an intaglio printing press are controlled and, if necessary, adjusted, according to the measurements made in the printed control areas.
La présente invention répond également aux buts susmentionnés en proposant une gamme de contrôle dont les caractéristiques sont énoncées dans la revendication indépendante 13. Des modes de réalisation avantageux de cette gamme de contrôle sont présentées dans la description qui suit et font l'objet des revendications dépendantes.The present invention also meets the above-mentioned objects by providing a control range whose characteristics are set forth in independent claim 13. Advantageous embodiments of this control range are presented in the description which follows and are the subject of the dependent claims.
La gamme de contrôle selon la présente invention trouve une application particulièrement avantageuse aux fins de permettre le contrôle et, le cas échéant, l'ajustement des paramètres d'impression d'une presse d'impression taille-douce, en particulier de la pression d'impression et de la charge d'encre.The control range according to the present invention finds a particularly advantageous application for the purpose of allowing the control and, where appropriate, the adjustment of the printing parameters of an intaglio printing press, in particular the pressure of the printing press. print and ink charge.
La présente invention porte également sur une plaque gravée pour impression taille-douce, en particulier une plaque d'impression taille-douce ou un précurseur de plaque d'impression taille-douce, comportant la gamme de contrôle susmentionnée réalisée dans une portion de la plaque gravée, les plages de contrôle étant gravées dans la portion de la plaque gravée, préférablement dans une portion formant marge sur une partie terminale de la plaque gravée.The present invention also relates to an etched plate for intaglio printing, in particular an intaglio printing plate or an intaglio printing plate precursor, comprising the abovementioned control range made in a portion of the plate. etched, the control pads being etched in the portion of the engraved plate, preferably in a portion forming a margin on an end portion of the etched plate.
A ce titre, la présente invention porte également sur tout substrat imprimé (par exemples des feuilles imprimées ou une bande continue imprimée) au moyen d'une plaque d'impression taille-douce selon l'invention.In this respect, the present invention also relates to any printed substrate (for example printed sheets or a printed continuous strip) by means of an intaglio printing plate according to the invention.
D'autres modes de réalisation avantageux de l'invention font l'objet des revendications dépendantes.Other advantageous embodiments of the invention are the subject of the dependent claims.
Les caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée qui suit de modes de réalisation de l'invention, présentés uniquement à titre d'exemples non limitatifs et illustrés par les dessins annexés où :
- la
Figure 1 montre une image en demi-teintes d'un spécimen de billet de banque avec le portrait de Lord Byron tel que produit par la Demanderesse et distribué aupublic durant l'année 2003 ; - la
Figure 2 montre une vue schématique d'une presse d'impression taille-douce telle qu'utilisée pour la production de papiers-valeurs, en particulier de billets de banque ; - la
Figure 3 montre une vue schématique de l'unité d'impression taille-douce de la presse d'impression illustrée dans laFigure 2 ; - la
Figure 4 est une illustration schématique d'une plaque d'impression taille-douce munie d'une gamme de contrôle selon l'invention ; - la
Figure 5 illustre schématiquement un exemple de réalisation d'une gamme de contrôle comportant plusieurs plages de contrôle selon un premier mode de réalisation de l'invention ; - la
Figure 6 illustre schématiquement des zones de contrôle imprimées résultant de l'impression de la gamme de contrôle de laFigure 5 ; - la
Figure 7 illustre schématiquement un autre exemple de réalisation d'une gamme de contrôle comportant plusieurs plages de contrôle selon un second mode de réalisation de l'invention ; - la
Figure 8 est un diagramme schématique illustrant les étapes d'un procédé visant à ajuster les paramètres d'impression d'une presse d'impression taille-douce selon un exemple de mise en oeuvre de l'invention ; - la
Figure 9 est un vue schématique illustrant une mesure de la propreté de ligne, une mesure du taux de remplissage, ainsi qu'une mesure de densité optique d'une ligne imprimée au titre d'élément de contrôle ; et - la
Figure 10 est un diagramme schématique illustrant la variation de la réflectance mesurée selon la ligne I-I dans laFigure 9 .
- the
Figure 1 shows a halftone image of a banknote specimen with the portrait of Lord Byron as produced by the Claimant and distributed to the public during theyear 2003; - the
Figure 2 shows a schematic view of an intaglio printing press as used for the production of securities, particularly banknotes; - the
Figure 3 shows a schematic view of the intaglio printing unit of the printing press illustrated in FIG.Figure 2 ; - the
Figure 4 is a schematic illustration of an intaglio printing plate provided with a control range according to the invention; - the
Figure 5 schematically illustrates an exemplary embodiment of a control range comprising several control ranges according to a first embodiment of the invention; - the
Figure 6 schematically illustrates printed control areas resulting from the printing of the control range of theFigure 5 ; - the
Figure 7 schematically illustrates another embodiment of a control range comprising several control ranges according to a second embodiment of the invention; - the
Figure 8 is a schematic diagram illustrating the steps of a method for adjusting the print parameters of an intaglio printing press according to an exemplary implementation of the invention; - the
Figure 9 is a schematic view illustrating a measure of line cleanliness, a fill rate measurement, and an optical density measurement of a printed line as a control element; and - the
Figure 10 is a schematic diagram illustrating the variation of the reflectance measured along line II in theFigure 9 .
La
Les feuilles sont alimentées depuis l'unité d'alimentation de feuilles 2 sur une table d'alimentation, ou margeur, puis transférées une à une au cylindre d'impression 7. Les feuilles sont ensuite transportées par le cylindre d'impression 7 au point d'impression entre le cylindre d'impression 7 et le cylindre porte-plaque 8 où l'impression taille-douce à proprement parler a lieu. Une fois imprimées, les feuilles sont transférées du cylindre d'impression 7 vers un système transporteur de feuilles 15 afin d'être transportées et délivrées à l'unité de délivrance de feuilles 4. Le système transporteur de feuilles 15 comporte de manière conventionnelle un système convoyeur de feuilles comprenant une paire de chaines sans fin entraînant une pluralité de barres de pinces espacées retenant les feuilles par leur partie frontale (la face fraîchement imprimée des feuilles étant orientée vers le bas durant le trajet des feuilles de l'unité d'impression 3 vers l'unité de délivrance de feuilles 4), les feuilles étant transférées successivement à une barre de pinces correspondante du système convoyeur.The sheets are fed from the
Durant leur transport vers l'unité de délivrance de feuilles 4, les feuilles fraîchement imprimées sont préférablement inspectées par un système optique d'inspection 5. Dans l'exemple illustré, le système optique d'inspection 5 est avantageusement un système d'inspection conforme à celui divulgué dans la demande internationale publiée sous le No.
Avant délivrance, les feuilles imprimées sont préférablement transportées devant une unité de séchage ou de durcissement (« curing ») 6 disposée après le système d'inspection 5 le long du trajet de transport du système transporteur de feuilles 15. Le séchage ou durcissement pourrait le cas échéant être réalisé avant l'inspection optique des feuillles.Prior to delivery, the printed sheets are preferably transported in front of a drying or curing
La
Le système d'encrage comprend dans cet exemple cinq dispositifs d'encrage 20, lesquels coopèrent tous avec le cylindre collecteur d'encres 9 qui est au contact du cylindre porte-plaque 8. L'on comprendra ainsi que le système d'encrage illustré est adapté pour l'encrage indirect du cylindre porte-plaque 8, à savoir des plaques d'impression taille-douce, via le cylindre collecteur d'encres 9. Les dispositifs d'encrage 20 comportent chacun un encrier comprenant un rouleau d'encrier 21 coopérant dans cet exemple avec une paire de rouleaux d'application d'encre 22. Chaque paire de rouleaux d'application d'encre 22 encre à son tour un cylindre chablon correspondant 23 qui est au contact du cylindre collecteur d'encre 9. Comme cela est usuel dans le domaine, la surface des cylindres chablons 23 est structurée de manière à présenter des portions en relief correspondant aux zones des plaques d'impression taille-douce devant recevoir les encres de couleurs correspondantes fournies par les dispositifs d'encrage 20.The inking system comprises in this example five
Comme illustré dans les
La configuration à double chariots de la presse d'impression taille-douce 1 telle qu'illustrée dans les
Le système d'essuyage d'encre 10 comprend typiquement une cuve d'essuyage, un cylindre (ou rouleau) essuyeur 11 supporté sur et partiellement situé dans la cuve d'essuyage de manière à venir au contact du cylindre porte-plaque 8, des moyens de nettoyage (non illustrés) pour enlever les résidus d'encres essuyés de la surface du cylindre essuyeur 11, et une lame de séchage (non illustrée) placée au contact de la surface du cylindre essuyeur 11 afin d'enlever les résidus de solution d'essuyage de la surface du cylindre essuyeur 11. Un exemple de réalisation d'un système d'essuyage particulièrement adapté est décrit dans la demande internationale publiée sous le No.
Un exemple schématique d'une plaque d'impression taille-douce, désignée globalement par la référence numérique 80, est illustré dans la
Des moyens adéquats sont mis en oeuvre classiquement pour réaliser des gravures dans la surface de la plaque d'impression 80. Ces gravures peuvent avantageusement être réalisés selon les principes énoncés dans les demandes internationales publiées sous les Nos.
La référence numérique 100 dans la
La référence numérique 150 (ainsi que la référence numérique 170) désigne quant à elle une gamme de contrôle selon un mode de réalisation de l'invention illustrée très schématiquement dont une fonction essentielle est de permettre à un imprimeur d'effectuer, sur les feuilles imprimées au moyen de la plaque d'impression taille-douce 80, diverses mesures relatives à l'impression taille-douce. Dans la
La
La gamme de contrôle 150 illustrée dans la
Les diverses plages de contrôle de la gamme de contrôle sont chacune destinées à être encrée au moyen d'une encre déterminée. Dans l'exemple illustré, les encres sont au nombre de cinq (ce qui correspondant au nombre de dispositifs d'encrage 20 dans la presse d'impression taille-douce 1 des
La partie inférieure de la
Plus précisément, dans l'exemple illustré, les plages de contrôle 154, 155, 153 (lesquelles correspondent respectivement aux éléments de contrôle D, E, C), à l'extrémité gauche de la gamme de contrôle 150, forment un ensemble qui est encré au moyen d'une même première encre taille-douce ①. Ceci est au demeurant représenté par un index a1 sur le côté droit de la plage de contrôle 153, un index correspondant étant prévu pour identifier l'encre taille-douce utilisée pour l'encrage de chaque plage ou ensemble de plages de contrôle. La plage de contrôle 152 (correspondant à l'élément de contrôle B) est quant à elle encrée au moyen d'une deuxième encre taille-douce ②, alors que la plage de contrôle 151 (correspondant à l'élément de contrôle A) est encrée au moyen d'une troisième encre taille-douce ③, ceci étant représenté par un index correspondant a2, respectivement a3, sur le côté droit de la plage de contrôle 152, respectivement 153. Ces permutations entre éléments de contrôle A à E et encres ① à ⑤ sont poursuivies sur l'ensemble de la gamme de contrôle 150. Ainsi, par exemple, les deux plages de contrôle immédiatement à droite de la plage de contrôle 151 (lesquelles ne sont pas représentées sur la partie inférieure de la
Diverses permutations sont entreprises de manière à ce qu'au moins une partie des éléments de contrôle A à E soient restitués sous la forme de plages de contrôle encrées au moyen de l'ensemble des cinq encres taille-douce ① à ⑤. Dans l'exemple illustré dans la
Comme on le comprendra ci-après, il s'agit avant tout, dans le cadre de la présente invention, de prévoir des plages de contrôle conçues pour permettre notamment d'évaluer les effets de la pression d'impression appliquée lors de l'impression du substrat et d'évaluer les effets de la charge d'encre appliquée lors de l'encrage de la plaque d'impression taille-douce 80. A ces fins, les plages de contrôle de la gamme de contrôle 150 comprennent un ensemble de lignes et/ou courbes présentant des orientations et des dimensions (largeur et/ou profondeur) variées, permettant d'effectuer les mesures désirées.As will be understood below, it is above all, in the context of the present invention, to provide control ranges designed to allow in particular to evaluate the effects of the printing pressure applied during printing. of the substrate and to evaluate the effects of the ink charge applied during the inking of the
Selon un mode de réalisation préféré de l'invention, les lignes et/ou courbes sont sélectionnées eu égard en particulier aux considérations qui suivent.According to a preferred embodiment of the invention, the lines and / or curves are selected with particular regard to the following considerations.
En premier lieu, l'impression taille-douce dépend d'un facteur vital, à savoir la pression d'impression. La pression d'impression a pour effet de pousser le substrat plus ou moins profondément à l'intérieur des gravures pour entrer en contact avec l'encre qui s'y trouve. Une pression d'impression excessive a typiquement pour effet de causer potentiellement un débordement de l'encre en-dehors des gravures (on parle alors communément de « crachage »), ce qui nuit à la netteté et à la propreté des lignes imprimées. Ce débordement, ou crachage, est également influé par la quantité d'encre effectivement présente dans les gravures.In the first place, the intaglio printing depends on a vital factor, namely the printing pressure. The printing pressure has the effect of pushing the substrate more or less deeply inside the engravings to come into contact with the ink therein. Excessive printing pressure typically has the effect of potentially causing ink to spill out of the engravings (commonly referred to as "spitting"), which affects the sharpness and cleanliness of the printed lines. This overflow, or spitting, is also influenced by the amount of ink actually present in the engravings.
Un équilibre doit ainsi être trouvé entre la pression d'impression et la charge d'encre de manière à assurer que tant les lignes fines (et peu profondes) que les lignes larges (et plus profondes) puissent être correctement imprimées. Le phénomène de crachage peut en effet se produire à cause d'une charge d'encre excessive et/ou à cause d'une pression d'impression excessive, car ces deux paramètres d'impression peuvent individuellement ou conjointement conduire à un débordement de l'encre en-dehors des gravures.A balance must therefore be found between the printing pressure and the ink charge so as to ensure that both the thin (and shallow) lines and the wide (and deeper) lines can be properly printed. The spitting phenomenon may indeed occur due to excessive ink loading and / or excessive printing pressure, as these two print parameters may individually or jointly lead to overflow. ink outside engravings.
Cela étant, on peut également constater que les variations de la charge d'encre, au-delà d'un niveau minimal, sont peu visibles dans les gravures fines et peu profondes car, même avec un encrage léger, ces gravures sont généralement bien encrées. La quantité d'encre est déterminée par le volume des gravures et l'action de l'essuyeur. Ainsi, même si une forte quantité d'encre est transmise à la plaque, il n'est pas possible de remplir les gravures au-delà du volume à disposition et le surplus hors des gravures est évacué lors de l'essuyage. En d'autres termes, il est en particulier possible d'évaluer les effets de la pression d'impression en examinant l'impression de gravures fines et peu profondes, la qualité d'impression de ces gravures n'étant pour ainsi dire pas affectée par la charge d'encre au-delà du niveau d'encrage minimal suffisant à l'encrage desdites gravures fines et peu profondes.However, it can also be seen that the variations in the ink charge, beyond a minimum level, are not very visible in the fine and shallow engravings because, even with a light inking, these engravings are generally well inked. . The amount of ink is determined by the volume of the engravings and the action of the wiper. Thus, even if a large quantity of ink is transmitted to the plate, it is not possible to fill the engravings beyond the volume available and the surplus off engravings is evacuated when wiping. In other words, it is possible in particular to evaluate the effects of the printing pressure by examining the printing of fine and shallow engravings, the print quality of these engravings being, as it were, not affected. by the ink charge beyond the minimum ink level sufficient to inking said fine and shallow engravings.
On notera en outre que la nature des encres taille-douce utilisées, dont la viscosité peut notamment varier, a également une influence sur le phénomène de crachage. Par ailleurs, l'orientation des lignes (ou courbes) gravées dans une plaque d'impression taille-douce ainsi que leur profil (typiquement en « V », en « U » ou carré) ont une influence sur le degré d'imprimabilité des gravures en question.It will further be noted that the nature of the intaglio inks used, the viscosity of which may vary in particular, also has an influence on the spitting phenomenon. Furthermore, the orientation of the lines (or curves) etched in an intaglio printing plate and their profile (typically "V", "U" or square) have an influence on the degree of printability of the engravings in question.
En effet, dans l'industrie fiduciaire où l'on fait encore largement usage de papier fiduciaire à base de coton, il est d'usage d'utiliser du papier dit à « bande large » (ou papier « BL »), c'est-à-dire du papier qui, une fois débité en feuilles, présente des fibres dont l'orientation est typiquement perpendiculaire au plus grand côté des feuilles (lequel plus grand côté est lui-même classiquement orienté perpendiculairement au sens d'impression). En d'autres termes, les fibres de papier fiduciaire sont typiquement orientées sensiblement parallèlement au sens d'impression I (c'est-à-dire sensiblement à 0° par rapport au sens d'impression I). Il a été constaté que les fibres de papier fiduciaire offrent dans une certaine mesure une résistance à la pénétration du papier dans les gravures de la plaque d'impression taille-douce. Du fait de l'orientation typique des fibres du papier à 0° par rapport au sens d'impression I, la résistance du papier à pénétrer dans les gravures est moindre pour des gravures orientées essentiellement verticalement (c'est-à-dire des gravures sensiblement parallèles au sens d'impression I). A l'inverse, la résistance du papier à pénétrer dans les gravures est plus importante pour des gravures orientées essentiellement horizontalement (c'est-à-dire des gravures sensiblement perpendiculaires au sens d'impression I).Indeed, in the fiduciary industry, where cotton-based paper is still widely used, it is customary to use "broadband" paper (or "BL" paper). that is to say paper which, when cut into sheets, has fibers whose orientation is typically perpendicular to the largest side of the sheets (which largest side is itself conventionally oriented perpendicular to the direction of printing). In other words, the fiduciary paper fibers are typically oriented substantially parallel to the printing direction I (i.e. substantially 0 ° to the printing direction I). Paper fi ber fibers have been found to provide some resistance to paper penetration in intaglio print plate etchings. Due to the typical orientation of the paper fibers at 0 ° to the printing direction I, the resistance of the paper to penetrate the engravings is lower for essentially vertically oriented engravings (i.e. engravings). substantially parallel to the printing direction I). Conversely, the resistance of the paper to penetrate the engravings is more important for engravings oriented substantially horizontally (i.e., engravings substantially perpendicular to the printing direction I).
Cela étant, le sens d'impression I coïncide également avec le sens d'essuyage, ce qui a pour conséquence que les gravures orientées essentiellement verticalement contiennent typiquement moins d'encre que les gravures orientées essentiellement horizontalement, qui sont perpendiculaires au sens d'essuyage et retiennent donc mieux l'encre.That being so, the printing direction I also coincides with the wiping direction, with the consequence that the vertically oriented engravings typically contain less ink than the substantially horizontally oriented engravings, which are perpendicular to the wiping direction. and therefore retain the ink better.
Ces considérations générales ont donc été prises en compte pour concevoir les éléments de contrôle A à E représentés dans la
S'agissant de l'élément de contrôle A, restitué notamment sous la forme de la plage de contrôle 151 dans la
L'élément de contrôle A est principalement exploité afin d'effectuer des mesures de contraste entre les différents quarts composant l'élément de contrôle, et par là-même évaluer la qualité d'impression d'éléments multi-tons. Pour rappel, un élément multi-tons est généralement imprimé au moyen d'une seule encre taille-douce et présente des variations de tonalités résultant typiquement d'une variation de profondeur de gravure dans une gamme de valeurs de l'ordre de quelque microns à environ 40 µm. L'élément de contrôle A réplique ainsi les variations typiques de profondeurs de gravures utilisées pour la création d'éléments multi-tons.The control element A is mainly used to perform contrast measurements between the different quarters composing the control element, and thereby to evaluate the print quality of multi-tone elements. As a reminder, a multi-tone element is generally printed using a single intaglio ink and has tonal variations typically resulting from a variation in engraving depth in a range of values of the order of some microns to about 40 μm. The control element A replicates the typical variations of depths of engraving used for the creation of multi-tone elements.
L'élément de contrôle D, restitué notamment sous la forme de la plage de contrôle 154 dans la
Les éléments de contrôle B et C, restitués notamment sous la forme des plages de contrôle 152 et 153 dans la
S'agissant plus particulièrement de l'élément de contrôle C, il est question ici, à titre illustratif, d'un ensemble de lignes à ±45° présentant une épaisseur de ligne (lw) de l'ordre de 200 µm et un espacement de ligne (ls) de l'ordre 160 µm. S'agissant de l'élément de contrôle B, il est question, à nouveau à titre illustratif, d'un ensemble de lignes à ±45° présentant une épaisseur de ligne (lw) de l'ordre de 100 µm et un espacement de ligne (ls) de l'ordre 160 µm. Préférablement, les éléments de contrôle B et C sont également subdivisés en quatre quarts et la profondeur de ligne (ld) est différente pour chaque quart, dans une plage de valeurs inférieures ou égales à 70 µm (étant précisé que des profondeurs de gravures s'élevant à 100 µm, voire plus, sont également envisageables). Il s'agit ici avantageusement d'un éventail représentatif de deux types de lignes qui se caractérisent par un comportement radicalement différent en termes d'imprimabilité. En effet, les lignes larges (comme celles qui caractérisent l'élément de contrôle C) ont une tendance naturelle à laisser pénétrer le substrat à imprimer plus profondément à l'intérieur des gravures. Par conséquent, une perturbation de l'équilibre entre pression d'impression et charge d'encre sera plus rapidement visible sur les lignes larges de l'élément de contrôle C que sur les lignes, plus fines, de l'élément de contrôle B. En d'autres termes, les lignes de 200 µm constitutives de l'élément de contrôle C sont plus sensibles aux variations de l'équilibre entre la pression d'impression et la charge d'encre que les lignes de 100 µm constitutives de l'élément de contrôle B. Par ailleurs, les divers quarts constitutifs des éléments de contrôle B et C permettent ainsi avantageusement de constituer un échantillonnage de mesures (en particulier des mesures de propreté de ligne, de taux de remplissage de ligne, et de densité optique des lignes) représentatives de l'impression de gravures de profondeurs variées, en particulier des gravures dont la profondeur varie dans une gamme de valeurs inférieures ou égales à 70 µm. Dans le cas d'espèce, chaque élément de contrôle B et C permet de constituer un échantillonnage de quatre mesures (une pour chaque quart).With regard more particularly to the control element C, reference is made here, by way of illustration, of a set of lines at ± 45 ° having a line thickness (lw) of the order of 200 μm and a spacing line (ls) of the
Le cinquième élément de contrôle E, restitué notamment sous la forme de la plage de contrôle 155 dans la
La
La
A l'image de la gamme de contrôle 150 illustrée à la
Les diverses plages de contrôle de la gamme de contrôle sont chacune destinées à être encrées au moyen d'une encre déterminée. Dans l'exemple illustré, les encres sont à nouveau au nombre de cinq et les références ① à ⑤ désignent une fois de plus l'encre au moyen de laquelle chaque plage de contrôle est encrée.The various control ranges of the control range are each intended to be inked by means of a specific ink. In the illustrated example, the inks are again five in number and the
La partie inférieure de la
Diverses permutations sont à nouveau entreprises de manière à ce qu'au moins une partie des éléments de contrôle K à S soient restitués sous la forme de plages de contrôle encrées au moyen de l'ensemble des cinq encres taille-douce ① à ⑤. Dans l'exemple illustré dans la
Les plages de contrôle de la gamme de contrôle 170 permettent une fois de plus d'évaluer notamment les effets de la pression d'impression appliquée lors de l'impression du substrat, et d'évaluer les effets de la charge d'encre appliquée lors de l'encrage de la plaque d'impression taille-douce 80.The control ranges of the
Eu égard aux considérations mentionnées plus haut, les éléments de contrôle K à S ont été conçus comme suit.In view of the considerations mentioned above, the control elements K to S have been designed as follows.
S'agissant des éléments de contrôle R et S, restitués notamment sous la forme des plages de contrôle 178 et 179 dans la
Les éléments de contrôle M à Q, restitués notamment sous la forme des plages de contrôle 173 et 177 dans la
L'élément de contrôle O illustré dans la
On comprendra à nouveau que les divers quarts constitutifs des éléments de contrôle M à Q permettent avantageusement de constituer un échantillonnage de mesures représentatives de l'impression de gravures de profondeurs variées, en particulier des gravures dont la profondeur varie dans une gamme de valeurs inférieures ou égales à 70 µm. Dans le cas d'espèce, l'élément de contrôle M permet de constituer un échantillonnage de quatre mesures (une pour chaque quart) sur quatre valeurs de profondeurs différentes (par exemple 20 µm, 35 µm, 50 µm et 70 µm) s'agissant de lignes imprimées présentant une épaisseur de ligne (lw) de 100 µm. Les éléments de contrôles N à Q permettent quant à eux de constituer un échantillonnage de quinze mesures (une pour chaque quart, excepté l'aplat 180) sur quinze valeurs de profondeurs différentes (par exemple 8 µm, 10 µm, 12 µm, 15 µm, 20 µm, 25 µm, 30 µm, 35 µm, 40 µm, 45 µm, 50 µm, 55 µm, 60 µm, 65 µm et 70 µm) s'agissant de lignes imprimées présentant une épaisseur de ligne (lw) de 200 µm. Dans cet exemple, l'échantillonnage est plus important s'agissant des lignes présentant une épaisseur de ligne (lw) de 200 µm dans la mesure où ces lignes sont, comme déjà mentionné, plus sensibles aux variations de l'équilibre entre la pression d'impression et la charge d'encre que les lignes de 100 µm de large.It will again be understood that the various constituent quarters of the control elements M to Q advantageously make it possible to constitute a sampling of measurements representative of the printing of engravings of various depths, in particular engravings whose depth varies within a range of lower values or equal to 70 μm. In the case in point, the control element M makes it possible to constitute a sampling of four measurements (one for each quarter) over four different depth values (for example 20 μm, 35 μm, 50 μm and 70 μm). acting as printed lines having a line thickness (lw) of 100 μm. The control elements N to Q make it possible to constitute a sampling of fifteen measurements (one for each quarter, except the solid 180) on fifteen values of different depths (for example 8 μm, 10 μm, 12 μm, 15 μm , 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm and 70 μm) in the case of printed lines having a line thickness (lw) of 200 .mu.m. In this example, sampling is more important for lines with a line thickness (lw) of 200 μm insofar as these lines are, as already mentioned, more sensitive to changes in the balance between the pressure of print and ink charge than 100 μm wide lines.
L'élément de contrôle L, restitué notamment sous la forme de la plage de contrôle 172 dans la
Il est bien évidemment entendu qu'une impression de la gamme de contrôle 170 de la
D'autres variantes de réalisation de la gamme de contrôle au-delà des deux variantes illustrées dans les
La
Ce procédé implique tout d'abord (étape S10) la préparation et la fourniture d'une plaque d'impression taille-douce (à l'image de la plaque d'impression taille-douce 80 illustrée dans la
L'imprimeur procède ensuite (à l'étape S12) à un préréglage des paramètres d'impression de la presse d'impression taille-douce, en particulier de la pression d'impression, de la charge d'encre, et de l'essuyage. Il s'agit ici de paramètres nominaux généralement recommandés par le constructeur de la presse d'impression taille-douce et qui doivent permettre d'effectuer une impression taille-douce de bonne facture, étant toutefois entendu qu'un ajustement ultérieur de ces paramètres est typiquement nécessaire en pratique.The printer then proceeds (in step S12) to a presetting of the printing parameters of the intaglio printing press, in particular the printing pressure, the ink charge, and the printing press. wiping. These are nominal parameters generally recommended by the manufacturer of the intaglio printing press and which must make it possible to perform an intaglio printing of good bill, with the understanding that a subsequent adjustment of these parameters is typically necessary in practice.
Une fois les paramètres nominaux préréglés, l'imprimeur peut procéder à l'impression de feuilles de test (à l'étape S14) au moyen de la plaque d'impression taille-douce munie de la gamme de contrôle.Once the nominal parameters have been preset, the printer can proceed to print test sheets (in step S14) by means of the intaglio printing plate provided with the control range.
Une fois cette impression taille-douce effectuée, des mesures peuvent alors être réalisées (étape S16) sur les zones de contrôle imprimées correspondant aux plages de contrôle de la gamme de contrôle, en particulier aux fins de vérifier la pression d'impression et la charge d'encre (étape S18), et de procéder le cas échéant à des ajustements correspondants (étape S20) avant d'entreprendre une nouvelle impression.Once this intaglio printing has been carried out, measurements can then be made (step S16) on the printed control areas corresponding to the control ranges of the control range, in particular for the purpose of checking the printing pressure and the load. ink (step S18), and if necessary to make corresponding adjustments (step S20) before starting a new print.
Comme déjà mentionné plus haut, l'imprimeur cherchera en pratique à trouver un équilibre optimal entre la pression d'impression et la charge d'encre, et les mesures effectuées dans les zones de contrôle imprimées doivent notamment permettre de trouver cet équilibre optimal. Par exemple, en se référant à la gamme de contrôle 150 de la
Selon un mode de réalisation préféré de l'invention, l'on procède aux dites mesures quantitatives dans les zones de contrôle imprimées restituant des lignes orientées à ±45° par rapport au sens d'impression I (à l'image des zones de contrôle imprimées 162, 163 restituant les éléments de contrôle B et C de la gamme de contrôle 150 ou les zones de contrôle imprimées restituant les éléments de contrôle M à Q de la gamme de contrôle 170).According to a preferred embodiment of the invention, the said quantitative measurements are carried out in the printed control zones rendering lines oriented at ± 45 ° with respect to the printing direction I (in the image of the control zones printed 162, 163 restoring the control elements B and C of the
Ces mesures quantitatives comprennent préférablement la mesure d'une propreté de ligne, d'un degré de remplissage de ligne et d'une densité optique selon une norme déterminée, en particulier selon la norme ISO/IEC TS 24790:2012 (accessible sur le site de l'Organisation internationale de normalisation, www-iso-org) dont la première édition a été publiée le 15 août 2012. Cette norme annule et remplace la norme antérieure ISO/IEC 13660:2001 qui a été révisée techniquement, mais reste le cas échéant pertinente pour la mise en oeuvre de la présente invention.These quantitative measures preferably include the measurement of a line cleanliness, a degree of line filling and an optical density according to a given standard, in particular according to ISO / IEC TS 24790: 2012 (accessible on the site). of the International Organization for Standardization, www-iso-org), the first edition of which was published on August 15, 2012. This standard cancels and replaces the previous standard ISO / IEC 13660: 2001 which has been technically revised, but remains the case appropriate for the implementation of the present invention.
La propreté de ligne est en particulier mesurée par détermination du « raggedness » au sens des clauses 3.28 et 5.3.6 de la norme ISO/IEC TS 24790:2012. Le degré de remplissage de ligne est quant à lui mesuré par détermination du « fill » au sens des clause 3.12 et 5.3.7 de la norme ISO/IEC TS 24790:2012. Quant à la densité optique, celle-ci est mesurée selon les clauses 3.21 et 3.26 de la norme ISO/IEC TS 24790:2012. Les
Le « raggedness » selon la norme ISO/IEC TS 24790:2012 est une mesure du degré de netteté d'une ligne par rapport à un seuil de ligne normalisé (ou « edge threshold »). La mesure du « raggedness » est réalisée selon les directives mentionnées dans la clause 5.3.6 de la norme ISO/IEC TS 24790:2012, à savoir en déterminant tout d'abord le seuil de ligne (« edge threshold ») défini comme le niveau de réflectance, R40, dans une courbe de réflectance d'une ligne (cf.
Le « fill » selon la norme ISO/IEC TS 24790:2012 est une mesure du degré (ou taux) de remplissage d'une ligne, réalisée selon les directives mentionnées dans la clause 5.3.7 de la norme ISO/IEC TS 24790:2012.The " fill " according to ISO / IEC TS 24790: 2012 is a measure of the degree (or rate) of filling of a line, carried out according to the guidelines mentioned in clause 5.3.7 of ISO / IEC TS 24790: 2012.
L'ensemble des mesures quantitatives peuvent être réalisées au moyen d'un dispositif optique de mesure, désigné globalement par la référence numérique 500 dans la
La transposition dans une plaque d'impression taille-douce de la gamme de contrôle et des plages de contrôle selon la présente invention peut être opérée selon les principes déjà énoncés dans les demandes internationales
Comme proposé dans la demande internationale
Il est entendu que la présente invention englobe également toute plaque gravée pour l'impression taille-douce (notamment toute plaque d'impression taille-douce ou tout précurseur de plaque d'impression taille-douce) comportant une gamme de contrôle selon la présente invention.It is understood that the present invention also encompasses any engraved plate for intaglio printing (especially any intaglio printing plate or intaglio printing plate precursor) having a control range according to the present invention. .
On comprendra de manière générale que diverses modifications et/ou améliorations évidentes pour l'homme du métier peuvent être apportées aux modes de réalisation décrits dans la présente description sans sortir du cadre de l'invention défini par les revendications annexées.It will be understood in general that various modifications and / or improvements obvious to those skilled in the art can be made to the embodiments described in the present description without departing from the scope of the invention defined by the appended claims.
En particulier, l'invention n'est pas limitée aux gammes de contrôle et aux plages de contrôle spécifiquement illustrées dans les
Par ailleurs, il est envisageable de définir au moins certaines plages de contrôle directement dans le dessin de sécurité à imprimer, en lieu et place ou en complément de plages de contrôle d'une gamme de contrôle comme discuté plus haut disposée en marge du dessin de sécurité. Le procédé de contrôle revendiqué n'est ainsi pas limité à l'utilisation d'une gamme de contrôle spécifique, étant toutefois relevé qu'une gamme de contrôle spécifique disposée en marge du dessin de sécurité présente l'avantage de ne pas affecter le dessin de sécurité en tant que tel et de ne pas restreindre les choix des designers.Moreover, it is conceivable to define at least some control ranges directly in the security drawing to be printed, in place of or in addition to control ranges of a control range as discussed above arranged in the margin of the drawing of FIG. security. The claimed control method is thus not limited to the use of a specific control range, however, it is noted that a specific control range arranged in the margin of the safety drawing has the advantage of not affecting the drawing. as such and not to restrict designers' choices.
Il est également entendu que les mesures susmentionnées réalisées dans les zones de contrôle imprimées peuvent être effectuées au moyen de tout outil de mesure adéquat. Il peut s'agir d'un dispositif de type LabQMD comme déjà évoqué plus haut ou d'une table d'inspection du type de celle décrite dans la demande internationale publiée sous le No.
En outre, il est potentiellement envisageable de prévoir des plages de contrôle permettant d'évaluer et mesurer l'essuyage de la plaque d'impression, autre paramètre caractérisant l'impression taille-douce. Cela étant, il est préférable d'évaluer la qualité de l'essuyage sur l'ensemble du substrat imprimé et de procéder le cas échéant à des ajustements correspondants. Une mesure de l'essuyage au moyen d'une ou plusieurs plages de contrôle pourrait ne pas nécessairement être représentative de la qualité d'essuyage sur l'ensemble du substrat imprimé.In addition, it is potentially conceivable to provide control ranges for evaluating and measuring the wiping of the printing plate, another parameter characterizing intaglio printing. That being so, it is preferable to evaluate the quality of the wiping on the entire printed substrate and, if necessary, to make adjustments. correspondents. Measurement of wiping by one or more control ranges may not necessarily be representative of the wiping quality of the entire printed substrate.
- 11
- presse d'impression taille-douce à la feuilleintaglio printing press at the sheet
- 22
- unité d'alimentation de feuillesleaf feeding unit
- 33
- unité d'impression taille-douceintaglio printing unit
- 44
- unité de délivrance de feuilles (avec trois piles)Leaf delivery unit (with three batteries)
- 55
- système optique d'inspection (par ex. NotaSave®)optical inspection system (eg NotaSave®)
- 66
- unité de séchage ou de curingdrying or curing unit
- 77
- cylindre d'impression (cylindre à trois segments)printing cylinder (three-segment cylinder)
- 7a7a
-
fosses du cylindre d'impression 7
impression cylinder pits 7 - 7b7b
-
segments du cylindre d'impression 7
print cylinder segments 7 - 88
- cylindre porte-plaque (cylindre à trois segments portant trois plaques d'impression taille-douce)plate cylinder (three-segment cylinder with three intaglio printing plates)
- 8a8a
-
fosses du cylindre porte-plaque 8pits of the
plate cylinder 8 - 8b8b
-
segments du cylindre porte-plaque 8segments of the
plate cylinder 8 - 99
- cylindre collecteur d'encres / cylindre Orlof (cylindre à trois segments)ink collector cylinder / cylinder Orlof (three-segment cylinder)
- 1010
- système d'essuyage d'encresink wiper system
- 1111
- cylindre (ou rouleau) essuyeur rotatif du système d'essuyage d'encres 10 (coopère avec la circonférence du cylindre porteplaque 8)cylinder (or roller) rotary wiper of the ink wiper system 10 (cooperates with the circumference of the platen cylinder 8)
- 1515
- système transporteur de feuilles (système convoyeur de feuilles comprenant une paire de chaines sans fin entraînant une pluralité de barres de pinces espacées retenant une partie frontale des feuilles)sheet conveyor system (sheet conveyor system comprising a pair of endless chains driving a plurality of spaced apart gripper bars holding a front portion of the sheets)
- 2020
- (cinq) dispositifs d'encrage(five) inking devices
- 2121
- encrierinkwell
- 2222
- rouleaux d'application d'encreink application rollers
- 2323
-
(cinq) cylindres chablons / cylindres sélecteurs de couleurs transférant de l'encre au cylindre collecteur 9(five) color-select / color-selector cylinders transferring ink to the
collector cylinder 9 - 5050
-
bâti stationnaire supportant le cylindre d'impression 7, le cylindre porte-plaque 8 et le système d'essuyage d'encres 10stationary frame supporting the
printing cylinder 7, theplate cylinder 8 and theink wiper system 10 - 5151
-
chariot intermédiaire supportant le cylindre collecteur d'encres 9 et les cylindres chablons 23intermediate carriage supporting the
ink collecting cylinder 9 and thestencil cylinders 23 - 5252
-
chariot d'encrage supportant les dispositifs d'encrage 20inking carriage supporting the
inking devices 20 - 52'52 '
-
chariot d'encrage 52 en position retiréeinking
carriage 52 in retracted position - 8080
- plaque d'impression taille-douce / plaque gravéeintaglio print plate / engraved plate
- II
- sens d'impression (correspond également au sens d'essuyage)print direction (also corresponds to the wiping direction)
- 100100
- dessin de sécurité (billet individuel)security drawing (individual ticket)
- 100A100A
-
ensemble des dessins de sécurité 100 réalisés sur une même plaque d'impression taille-douce 80set of
safety drawings 100 made on the sameintaglio printing plate 80 - 150150
- gamme de contrôle (première variante)control range (first variant)
- 151 à 155151 to 155
- plages de contrôle de la gamme de contrôle 150 (éléments de contrôle A à E)control ranges of the control range 150 (control elements A to E)
- 160160
-
impression correspondant à la gamme de contrôle 150print corresponding to the
control range 150 - 161 à 165161 to 165
- zones de contrôle imprimées correspondant à l'impression des plages de contrôle 151 à 155 (éléments de contrôle A à E)printed control areas corresponding to the printout of control ranges 151 to 155 (control elements A to E)
- A à EA to E
- premier à cinquième éléments de contrôle de la gamme de contrôle 150 (plages de contrôle 151 à 155 / zones de contrôle imprimées 161 à 165)first to fifth control elements of the control range 150 (control ranges 151 to 155 / control areas printed 161 to 165)
- 170170
- gamme de contrôle (seconde variante)control range (second variant)
- 171 à 179171 to 179
- plages de contrôle de la gamme de contrôle 170 (éléments de contrôle K à S)control ranges of the control range 170 (control elements K to S)
- K à SK to S
- premier à neuvième éléments de contrôle de la gamme de contrôle 170 (plages de contrôle 171 à 179)first to ninth control elements of the control range 170 (control ranges 171 to 179)
- a1 a 1
- index de couleur/chablon (première encre taille-douce / premier cylindre chablon)color index / stencil (first intaglio ink / first cylinder chablon)
- a2 a 2
- index de couleur/chablon (deuxième encre taille-douce / deuxième cylindre chablon)color index / stencil (second intaglio ink / second cylinder stencil)
- a3 a 3
- index de couleur/chablon (troisième encre taille-douce / troisième cylindre chablon)color index / stencil (third ink intaglio / third cylinder chablon)
- a4 a 4
- index de couleur/chablon (quatrième encre taille-douce / quatrième cylindre chablon)color index / stencil (fourth ink intaglio / fourth cylinder chablon)
- a5 a 5
- index de couleur/chablon (cinquième encre taille-douce / cinquième cylindre chablon)color index / stencil (fifth ink intaglio / fifth cylinder chablon)
- ①①
- zone encrée avec une première encre taille-douce (premier cylindre chablon)inked area with a first intaglio ink (first cylinder chablon)
- ②②
- zone encrée avec une deuxième encre taille-douce (deuxième cylindre chablon)Inked area with a second intaglio ink (second cylinder chablon)
- ③③
- zone encrée avec une troisième encre taille-douce (troisième cylindre chablon)Inked area with a third intaglio ink (third cylinder chablon)
- ④④
- zone encrée avec une quatrième encre taille-douce (quatrième cylindre chablon)Inked area with a fourth intaglio ink (fourth cylinder chablon)
- ⑤⑤
- zone encrée avec une cinquième encre taille-douce (cinquième cylindre chablon)inked area with a fifth intaglio ink (fifth cylinder chablon)
- S10S10
- fourniture d'une plaque d'impression taille-douce munie d'une gamme de contrôle selon l'inventionproviding an intaglio printing plate provided with a control range according to the invention
- S12S12
- préréglage des paramètres d'impression (paramètres d'impression nominaux) de la presse d'impression taille-doucepresetting the print settings (nominal print settings) of the intaglio printing press
- S14S14
-
impression d'un substrat au moyen de la plaque d'impression taille-douce munie de la gamme de contrôle 150printing of a substrate by means of the intaglio printing plate provided with the
control range 150 - S16S16
- mesures effectues dans les zones de contrôle imprimées résultant de l'impression de la gamme de contrôlemeasurements made in the printed control areas resulting from the printing of the control range
- S18S18
- évaluation des paramètres d'impression (pression d'impression, charge d'encre, essuyage)evaluation of printing parameters (printing pressure, ink charge, wiping)
- S20S20
- ajustement des paramètres d'impressionadjustment of print settings
- 200200
- ligne imprimée (par exemple ligne imprimée orientée à ±45° par rapport au sens d'impression I)printed line (eg printed line oriented at ± 45 ° to print direction I)
- lwlw
- épaisseur de ligne (« line width »)line width
- lsls
- espacement de ligne (« line spacing »)line spacing
- ldld
- profondeur de ligne (« line depth »)line depth
- Rmin R min
- facteur de réflectance minimum (zone imprimée) mesuré selon la norme ISO/IEC TS 24790:2012 (clause 3.32, Annexe D)minimum reflectance factor (printed area) measured according to ISO / IEC TS 24790: 2012 (clause 3.32, Annex D)
- Rmax R max
- facteur de réflectance maximum (zone non imprimée) mesuré selon la norme ISO/IEC TS 24790:2012 (clause 3.30, Annexe D)maximum reflectance factor (unprinted area) measured according to ISO / IEC TS 24790: 2012 (clause 3.30, Annex D)
- 210210
-
seuils de la ligne 200 déterminés selon la norme ISO/IEC TS 24790:2012 (« edge threshold R40 », clause 3.11) / déterminant pour la mesure de propreté de ligne (« raggedness », clause 5.3.6)thresholds of
line 200 determined according to ISO / IEC TS 24790: 2012 ("edge threshold R 40 ", clause 3.11) / determinant for the measure of line cleanliness ("raggedness", clause 5.3.6) - 250250
-
résidus (« residuals ») de part et d'autre des lignes coïncidant avec les seuils 210 / déterminant pour la mesure de propreté de ligne (« raggedness », clause 5.3.6)residues ("residuals") on either side of the lines coinciding with the
thresholds 210 / determining for the measure of cleanliness of line ("raggedness", clause 5.3.6) - 500500
- dispositif de mesure (conforme à la norme ISO/IEC TS 24790:2012)measuring device (according to ISO / IEC TS 24790: 2012)
Claims (29)
- A method for controlling an intaglio printing, particularly for the printing of paper securities, in particular of bank notes, said intaglio printing involving:(i) the inking of at least one intaglio printing plate (80) with at least one intaglio ink;(ii) the wiping of the thus inked intaglio printing plate (80); and(iii) the printing of a substrate by means of the thus wiped intaglio printing plate (80), the printing of the substrate involving the application of the substrate against the intaglio printing plate (80) at a printing pressure,the printing pressure, the ink load and the wiping constituting printing parameters that may affect said intaglio printing,
where the control method includes the following steps:(a) defining, on the intaglio printing plate (80), control ranges (150, 151 to 155, 170, 171 to 179) designed to allow the evaluation of the effects of the printing pressure applied during printing (iii) of the substrate and the evaluation of the effects of the ink load applied during inking (i) of the intaglio printing plate (80), which control ranges (150, 151 to 155; 170, 171 to 179) are engraved in a portion of the intaglio printing plate (80) in order to produce corresponding printed control areas (160, 161 to 165) on said substrate;(b) performing measurements in said printed control areas allowing the evaluation of the printing pressure applied during printing (iii) of the substrate; and(c) performing measurements in said printed control areas allowing the evaluation of the ink load applied during inking (i) of the intaglio printing plate (80);and wherein the printing pressure and the ink load are adjusted until the measurements performed in said printed control areas reflect an optimal balance between the printing pressure and the ink load. - The method according to claim 1, characterized in that the intaglio printing plate (80) is inked by means of a plurality of different inks, said control ranges (150, 151 to 155, 170, 171 to 179) comprising at least one control range (151 to 153; 171 to 176) for each used ink,
and in that the measurements performed in said printed control areas are performed for each ink individually. - The method according to any one of the preceding claims, characterized in that the measurements (b) and (c) performed in said printed control areas include the measurement of a line cleanliness ("raggedness"), the measurement of a line filling rate ("fill"), and the measurement of an optical density ("optical density") according to a determined measurement standard.
- The method according to claim 3, characterized in that the determined measurement standard is the SO/IEC 13660: 2001 standard or the ISO/IEC TS 24790: 2012 standard.
- The method according to claim 3 or 4, characterized in that the measurement of the line cleanliness ("raggedness"), the measurement of the line filling rate ("fill"), and the measurement of the optical density ("optical density") are performed on printed lines oriented substantially at ±45° relative to a printing direction (I).
- The method according to claim 5, characterized in that the printed lines, on which the measurement of the line cleanliness ("raggedness"), the measurement of the line filling rate ("fill"), and the measurement of the optical density ("optical density") are performed, have a line width (lw) comprised between 30 µm and 200 µm.
- The method according to any one of claims 3 to 6, characterized in that the measurements performed in said printed control areas further include the measurement of a contrast.
- The method according to any one of the preceding claims, characterized in that the measurements (b) and (c) performed in said printed control areas allow establishing a sampling of measurements representative of the printing of engravings of varying depths.
- The method according to claim 8, characterized in that the measurements (b) and (c) performed in said printed control areas allow establishing a sampling of measurements representative of the printing of engravings whose depth varies within a range of values less than or equal to 70 µm.
- The method according to any one of the preceding claims, characterized in that it further includes a step consisting in checking the printability of a safety pattern (100, 100A) to be intaglio-printed by means of the intaglio printing plate (80), once a printer has made a desired setting of said printing parameters.
- The method according to any one of the preceding claims, characterized in that the printing parameters of an intaglio printing press (1) are controlled and, if necessary, adjusted according to the measurements performed in said printed control areas.
- The method according to any one of the preceding claims, characterized in that the control ranges comprise control ranges of a control strip (150; 170) according to any one of claims 13 to 20 disposed in the margin of a safety pattern (100, 100A) and/or control ranges defined directly in the safety pattern (100, 100A).
- A control strip (150; 170) for an intaglio printing, particularly for the printing of paper securities, in particular of bank notes, said intaglio printing involving:(i) the inking of at least one intaglio printing plate (80) with at least one intaglio ink;(ii) the wiping of the thus inked intaglio printing plate (80); and(iii) the printing of a substrate by means of the thus wiped intaglio printing plate (80), the printing of the substrate involving the application of the substrate against the intaglio printing plate at a printing pressure,the printing pressure, the ink load and the wiping constituting printing parameters that may affect said intaglio printing,
the control strip (150; 170) comprising a plurality of control ranges (151 to 155; 171 to 179) intended to be engraved in a portion of the intaglio printing plate (80) and to form, on the printed substrate, a corresponding plurality of printed control areas (161 to 165),
said control ranges (151 to 155; 171 to 179) being designed to allow the evaluation and the measurement, in said printed control areas, of the effects of the printing pressure applied during printing (iii) of the substrate as well as the effects of the ink load applied during inking (i) of the intaglio printing plate (80),
wherein said control ranges (151 to 155; 171 to 179) comprise a set of lines and/or curves of varying depths (Id). - The control strip according to claim 13, characterized in that the depth (Id) of the lines and/or curves of said control ranges (151 to 155; 171 to 179) is varied within a range of values less than or equal to 70 µm.
- The control strip according to claim 13 or 14, characterized in that said control ranges (151 to 155; 171 to 179) are designed to allow the establishment of a sampling of measurements representative of the printing of engravings of varying depths, and in that the control ranges (151 to 155; 171 to 179) are subdivided into four quarters and the depth (Id) of the lines is different for each quarter.
- The control strip according to claim 15, characterized in that said control ranges (151 to 155; 171 to 179) are designed to allow the establishment of a sampling of measurements representative of the printing of engravings whose depth varies within a range of values less than or equal to 70 µm, and the control ranges (151 to 155; 171 to 179) are subdivided into four quarters and the depth (Id) of the lines is different for each quarter.
- The control strip according to any of claims 13 to 16, characterized in that said lines and/or curves also have varying line widths (lw).
- The control strip according to claim 17, characterized in that the line widths (lw) of said lines and/or curves are varied in a range of values from 30 µm to 200 µm.
- The control strip according to any one of claims 13 to 18, characterized in that at least one control range (151, 154, 155; 171, 178, 179) among said control ranges (151 to 155; 171 to 179) comprises lines oriented in a direction perpendicular to a printing direction (I).
- The control strip according to any one of claims 13 to 19, characterized in that at least one control range (152, 153; 172 to 177) among said control ranges (151 to 155; 171 to 179) comprises lines oriented substantially at ±45° relative to a printing direction (I).
- The control strip according to any one of claims 13 to 20, characterized in that said control ranges (151 to 155; 171 to 179) comprise:- at least one control range of the printing pressure (151, 154; 171, 179); and- for each ink used, at least one control range of the balance between printing pressure and ink load (152, 153, 172 to 177).
- The control strip according to claim 21, characterized in that said control range of the printing pressure (151, 154; 171, 179) comprises a set of thin and shallow lines and/or curves, the lines and/or curves having a line width less than or equal to 60 µm and a depth less than or equal to 40 µm.
- The control strip according to claim 21 or 22, characterized in that said control range of the balance between printing pressure and load ink (152, 153; 172 to 177) comprises a set of lines and/or curves of varying depths, particularly lines and/or curves having a line width greater than or equal to 100 µm and whose depth is varied in a range of values less than or equal to 70 µm.
- A use of the control strip (150; 170) according to any one of claims 13 to 23 for the control and, where appropriate, the adjustment of the printing parameters of an intaglio printing press (1).
- An engraved plate (80) for intaglio printing including a control strip (150; 170) according to any one of claims 13 to 23 made in a portion of said engraved plate (80), said control ranges (151 to 155; 171 to 179) being engraved in the portion of said engraved plate (80).
- The engraved plate according to claim 25, characterized in that said control ranges (151 to 155; 171 to 179) are engraved in a portion forming a margin on an end portion of the engraved plate.
- The engraved plate according to claim 25 or 26, characterized in that the engraved plate is an intaglio printing plate.
- The engraved plate according to claim 25 or 26, characterized in that the engraved plate is a precursor of the intaglio printing plate.
- A substrate printed by means of an intaglio printing plate (80) according to claim 27.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13830185.8A EP2934893B1 (en) | 2012-12-20 | 2013-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12198762.2A EP2746049A1 (en) | 2012-12-20 | 2012-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
PCT/IB2013/061170 WO2014097227A1 (en) | 2012-12-20 | 2013-12-20 | Control method for intaglio printing and control strip for that purpose |
EP13830185.8A EP2934893B1 (en) | 2012-12-20 | 2013-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2934893A1 EP2934893A1 (en) | 2015-10-28 |
EP2934893B1 true EP2934893B1 (en) | 2019-08-21 |
Family
ID=47603087
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12198762.2A Withdrawn EP2746049A1 (en) | 2012-12-20 | 2012-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
EP13830185.8A Active EP2934893B1 (en) | 2012-12-20 | 2013-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12198762.2A Withdrawn EP2746049A1 (en) | 2012-12-20 | 2012-12-20 | Method for monitoring intaglio printing and corresponding colour control patches |
Country Status (13)
Country | Link |
---|---|
US (1) | US10150283B2 (en) |
EP (2) | EP2746049A1 (en) |
JP (1) | JP6313782B2 (en) |
KR (1) | KR20150096690A (en) |
CN (1) | CN104918787B (en) |
AU (1) | AU2013365732B2 (en) |
BR (1) | BR112015014589A2 (en) |
CA (1) | CA2895221A1 (en) |
MX (1) | MX2015008081A (en) |
PH (1) | PH12015501431A1 (en) |
RU (1) | RU2646727C2 (en) |
WO (1) | WO2014097227A1 (en) |
ZA (1) | ZA201505213B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5943867B2 (en) * | 2013-03-26 | 2016-07-05 | 富士フイルム株式会社 | Printing apparatus and printing method |
JP6855688B2 (en) * | 2016-05-19 | 2021-04-07 | 株式会社村田製作所 | Gravure printing plate, gravure printing method and manufacturing method of electronic parts |
CN106379049B (en) * | 2016-08-30 | 2018-07-31 | 上海紫江彩印包装有限公司 | A kind of intaglio-printed image method of quality control |
EP3398782A1 (en) * | 2017-05-04 | 2018-11-07 | KBA-NotaSys SA | Inking system for inking an intaglio printing cylinder of an intaglio printing press, intaglio printing press comprising the same, and process of inking such an intaglio printing cylinder |
CN108116045B (en) * | 2017-12-22 | 2019-09-17 | 北京雅昌艺术印刷有限公司 | A kind of standardized printing control method |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH477293A (en) | 1967-12-19 | 1969-08-31 | Giori Gualtiero | Multi-color steel engraving printing machine for the production of notes of value, in particular banknotes |
US4003311A (en) * | 1975-08-13 | 1977-01-18 | Bardin Karl D | Gravure printing method |
AU550695B2 (en) | 1982-04-07 | 1986-03-27 | De La Rue Giori S.A. | Copperplate engraving machine for paper currency |
DE69008941T2 (en) | 1989-06-29 | 1994-12-15 | De La Rue Giori Sa | Gravure printing machine for printing securities. |
US5062360A (en) | 1989-08-30 | 1991-11-05 | De La Rue Giori S.A. | Combined rotary web-fed printing machine, especially for the printing of securities |
EP0563007B1 (en) | 1992-03-26 | 1996-07-10 | De La Rue Giori S.A. | Intaglio printing machine |
DE19613082C2 (en) | 1996-04-02 | 1999-10-21 | Koenig & Bauer Ag | Method and device for the qualitative assessment of processed material |
DE19613084A1 (en) | 1996-04-02 | 1997-10-09 | Koenig & Bauer Albert Ag | Suction box for guiding sheets |
DE19624131A1 (en) | 1996-06-17 | 1997-12-18 | Giesecke & Devrient Gmbh | Process for the production of embossing plates |
CA2232695C (en) | 1997-04-14 | 2005-02-01 | De La Rue Giori S.A. | Intaglio printing press |
EP1250226B1 (en) | 2000-01-25 | 2005-04-27 | Koenig & Bauer Aktiengesellschaft | Intaglio printer |
EP1437222B2 (en) * | 2001-10-15 | 2013-11-27 | Toppan Printing Co., Ltd. | Printing method, printed matter, and printing controller |
DE10158093B4 (en) | 2001-11-27 | 2004-07-08 | Koenig & Bauer Ag | Gravure printing machine |
DE10207073B4 (en) | 2002-02-20 | 2005-11-24 | Koenig & Bauer Ag | Device for transporting sheets with a sheet guiding element |
EP1369230A1 (en) | 2002-06-05 | 2003-12-10 | Kba-Giori S.A. | Method of manufacturing an engraved plate |
EP1400353A1 (en) | 2002-09-19 | 2004-03-24 | Kba-Giori S.A. | Intaglio printing machine |
JP4208066B2 (en) * | 2002-11-29 | 2009-01-14 | 大日本印刷株式会社 | Printing plate for offset printing and printing method for checking printing pressure |
EP1580020A1 (en) | 2004-03-24 | 2005-09-28 | Kba-Giori S.A. | Intaglio printing plate |
EP1594302A1 (en) * | 2004-05-06 | 2005-11-09 | Agfa-Gevaert | Digital control strip for flexogaphic printing |
EP1602483A1 (en) | 2004-06-03 | 2005-12-07 | Kba-Giori S.A. | Intaglio printing machine and process |
EP1602482A1 (en) | 2004-06-03 | 2005-12-07 | Kba-Giori S.A. | Intaglio printing machine with antishock cylinder arrangement |
CN101045371A (en) * | 2006-03-30 | 2007-10-03 | 深圳职业技术学院 | Digital platemaking control strip |
EP1844930A1 (en) | 2006-04-11 | 2007-10-17 | Kba-Giori S.A. | Ink wiping system for a printing machine |
EP1844929A1 (en) | 2006-04-13 | 2007-10-17 | Kba-Giori S.A. | Process for generating motifs of halftone images |
JP5154204B2 (en) * | 2006-11-20 | 2013-02-27 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Method for operating a device for optically measuring printed sheets |
US20080279712A1 (en) | 2007-05-11 | 2008-11-13 | Manabu Oku | Ferritic stainless steel sheet with excellent thermal fatigue properties, and automotive exhaust-gas path member |
CN101755290B (en) | 2007-06-01 | 2012-11-28 | 卡巴-诺塔赛斯有限公司 | Authentication of security documents, in particular of banknotes |
DE102007029211A1 (en) * | 2007-06-25 | 2009-01-08 | Heidelberger Druckmaschinen Ag | Improved print control strip for color measurement on substrates |
EP2119527A1 (en) | 2008-05-16 | 2009-11-18 | Kba-Giori S.A. | Method and system for manufacturing intaglio printing plates for the production of security papers |
CN101518980B (en) * | 2008-12-30 | 2010-09-15 | 武汉大学 | Printing color quality detecting method of integrating visual measurement, density measurement and color measurement |
EP2465098B1 (en) | 2009-08-11 | 2014-11-05 | KBA-NotaSys SA | Authentication of security documents, in particular of banknotes |
EP2338682A1 (en) | 2009-12-22 | 2011-06-29 | KBA-NotaSys SA | Intaglio printing press with mobile carriage supporting ink-collecting cylinder |
EP2399745A1 (en) | 2010-06-25 | 2011-12-28 | KBA-NotaSys SA | Inspection system for in-line inspection of printed material produced on an intaglio printing press |
US8571269B2 (en) * | 2011-03-16 | 2013-10-29 | Xerox Corporation | Image quality defect detection via sensor characterization and halftone dot classification |
EP2505356A1 (en) | 2011-03-30 | 2012-10-03 | KBA-NotaSys SA | Device for offline inspection and color measurement of printed sheets |
FR2974029B1 (en) * | 2011-04-14 | 2014-01-17 | Serge Hasle Camille | METHOD FOR PRINTING TESTS ON A SUBSTRATE AND ITS DEVICE FOR IMPLEMENTING IT |
-
2012
- 2012-12-20 EP EP12198762.2A patent/EP2746049A1/en not_active Withdrawn
-
2013
- 2013-12-20 US US14/653,622 patent/US10150283B2/en active Active
- 2013-12-20 AU AU2013365732A patent/AU2013365732B2/en not_active Ceased
- 2013-12-20 WO PCT/IB2013/061170 patent/WO2014097227A1/en active Application Filing
- 2013-12-20 BR BR112015014589A patent/BR112015014589A2/en not_active IP Right Cessation
- 2013-12-20 RU RU2015126330A patent/RU2646727C2/en not_active IP Right Cessation
- 2013-12-20 CA CA2895221A patent/CA2895221A1/en not_active Abandoned
- 2013-12-20 EP EP13830185.8A patent/EP2934893B1/en active Active
- 2013-12-20 CN CN201380069673.6A patent/CN104918787B/en not_active Expired - Fee Related
- 2013-12-20 JP JP2015548859A patent/JP6313782B2/en active Active
- 2013-12-20 MX MX2015008081A patent/MX2015008081A/en unknown
- 2013-12-20 KR KR1020157018090A patent/KR20150096690A/en not_active Application Discontinuation
-
2015
- 2015-06-19 PH PH12015501431A patent/PH12015501431A1/en unknown
- 2015-07-20 ZA ZA2015/05213A patent/ZA201505213B/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
MX2015008081A (en) | 2016-03-07 |
RU2015126330A (en) | 2017-01-24 |
EP2746049A1 (en) | 2014-06-25 |
JP2016506320A (en) | 2016-03-03 |
PH12015501431A1 (en) | 2015-09-07 |
AU2013365732B2 (en) | 2017-12-14 |
KR20150096690A (en) | 2015-08-25 |
CN104918787A (en) | 2015-09-16 |
BR112015014589A2 (en) | 2017-07-11 |
WO2014097227A1 (en) | 2014-06-26 |
US10150283B2 (en) | 2018-12-11 |
JP6313782B2 (en) | 2018-04-18 |
AU2013365732A1 (en) | 2015-07-02 |
ZA201505213B (en) | 2016-12-21 |
EP2934893A1 (en) | 2015-10-28 |
US20160185100A1 (en) | 2016-06-30 |
CA2895221A1 (en) | 2014-06-26 |
CN104918787B (en) | 2018-07-13 |
RU2646727C2 (en) | 2018-03-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2934893B1 (en) | Method for monitoring intaglio printing and corresponding colour control patches | |
EP0091709B1 (en) | Gravure machine for printing currency notes | |
EP2189286B1 (en) | Printing machine and method | |
EP2010389B1 (en) | Method of generating patterns representing a halftone image | |
EP2550395B1 (en) | Sheet having a multi-tone watermark, method for manufacturing a part for forming a multi-tone watermark, part for forming a multi-tone watermark, and use of said part for forming a multi-tone watermark | |
EP0406157A1 (en) | Platen printing machine for printing security paper | |
EP1252389B1 (en) | Security paper | |
EP2429825B1 (en) | Manufacturing process of a security element for a security document | |
FR2753131A1 (en) | DEVICE FOR WORKING ON SHEETS OF SHEET MATERIAL AND SHEET MATERIAL TO BE USED WITH THIS DEVICE | |
EP2139683A1 (en) | Doctor blade system for a printing unit, intended for an intaglio printing machine | |
EP1629986A1 (en) | Security printing process and security document | |
EP2697067B1 (en) | Printing test method on a substrate and device for the implementation thereof | |
CA2511796C (en) | Sheet with an anticpopying, reduced opacity area | |
EP1393925A1 (en) | Smooth cut printing plate | |
EP1847400B1 (en) | Control element for printed objects | |
BE527792A (en) | ||
CH170462A (en) | Method for the application of ink to at least certain regions of a support, and apparatus for its implementation. | |
BE397401A (en) | ||
EP2550162A1 (en) | Novel method for designing plates usable in flexography | |
FR2845942A1 (en) | Method of estimating conformity to pattern of printing reproduction is determined by juxtaposing rasters on each plate to be printed and printing these and reproduction simultaneously to determine readability | |
CH346895A (en) | Rotary press for simultaneous printing in multiple colors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150623 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HERITIER, RAYMOND Inventor name: VOROS, DENIS Inventor name: CHASSOT, DANIEL |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20180831 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20190404 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602013059548 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1169258 Country of ref document: AT Kind code of ref document: T Effective date: 20190915 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191121 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191223 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191121 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191122 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20191221 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20191220 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1169258 Country of ref document: AT Kind code of ref document: T Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20191220 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200224 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602013059548 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG2D | Information on lapse in contracting state deleted |
Ref country code: IS |
|
26N | No opposition filed |
Effective date: 20200603 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20191231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191220 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20131220 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20201220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190821 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20231201 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20240101 Year of fee payment: 11 |