EP2279082B1 - Procédé d'étalonnage d'une imprimante à jet d'encre - Google Patents

Procédé d'étalonnage d'une imprimante à jet d'encre Download PDF

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Publication number
EP2279082B1
EP2279082B1 EP09745516A EP09745516A EP2279082B1 EP 2279082 B1 EP2279082 B1 EP 2279082B1 EP 09745516 A EP09745516 A EP 09745516A EP 09745516 A EP09745516 A EP 09745516A EP 2279082 B1 EP2279082 B1 EP 2279082B1
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EP
European Patent Office
Prior art keywords
ink
control signal
printed
value
measurement parameter
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EP09745516A
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German (de)
English (en)
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EP2279082A1 (fr
Inventor
Patrik Lutz
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Padaluma Ink Jet Solutions GmbH
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Padaluma Ink Jet Solutions GmbH
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Priority to PL09745516T priority Critical patent/PL2279082T3/pl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation

Definitions

  • the invention relates to a method for calibrating an inkjet printer.
  • a print image is created by the targeted ejection or deflection of ink droplets.
  • the print image is composed of a grid of individual pixels, the achievable resolution being essentially given by the number of ink ejection nozzles per surface combined in one print head.
  • the print image is formed by the print head is moved relative to the substrate to be printed with appropriate activation of the nozzle.
  • the resolution of an inkjet printer is typically specified as dpi (dots per (square)).
  • the printed image can be printed on a variety of substrates, such as paper, wood, laminate, glass, textile or plastic.
  • the range of applications of inkjet printers is wide and ranges from well-known applications in the office and home sector to professional applications in the commercial sector.
  • a consistently consistent print image must be guaranteed at high production rates.
  • the print result in the case of a decorative print on laminate or wood panels may not differ even with different batches, so that uniform floor or wall coverings arise even when using individual elements of different batches or the end customer an invisible exchange of worn or damaged elements is possible.
  • the printed image must therefore be reproducible with a consistent appearance.
  • the printing result of an ink jet printer is influenced by external factors, such as, for example, atmospheric pressure, temperature or atmospheric humidity. These factors influence, among other things, the consistency of the ink used, in particular with regard to density, viscosity, flowability, surface tension, etc., so that different conditions occur in the ink ejection nozzles. Accordingly, the printed pixels in one day will be different from the printed pixels of another day. In other words, an ink jet printer has a sort of a daily form. This effect is irrelevant to small printers for home or office use. In a commercial use with high quality standards, however, the resulting deviations of the individual printed images of different batches are no longer tolerable.
  • a printed image is usually produced so far at different predetermined Schmticianrastem and measured the resulting color density.
  • the measured color density will differ as the nature of the individual pixels varies.
  • a common approach is now to match the measured per pixel screen real color density by a change of the image dot grid on the desired color density.
  • a calibration curve is measured which measures a change value for each image pixel grid in order to obtain the actually desired color density.
  • the digital image template which assigns a certain area of a certain color to a specific print area of the print image, is then modified via an appropriate software and passed to the inkjet printer.
  • the latter then prints a pixel screen which has been changed with respect to the digital original, although the printed image produced conveys the desired and, in particular, consistent, reproducible color impression.
  • This is also referred to as a so-called frequency modulation of the control signal, since the signal sequence for activating the ink ejection nozzles is modified in terms of time to produce the modified pixel pattern.
  • the ink cartridges of the same color of different saturation suggests the US 2003/0234828 A1 a calibration procedure to match the two colors.
  • a color mixture is determined which gives the same reflection signal independently of the emission spectra of the measuring sensors.
  • a specific expression corresponding to the expression of the color mixture is determined.
  • rasters of different color order are printed for each color and compared to an expression of the same color specified for the expression of the color mixture. Both colors are thus calibrated to a common, sensor-independent reference point and thus matched.
  • the single pixel does not matter. Rather, the two colors are matched by a grid adjustment to each other.
  • print images of the same original printed with different image dot screens show, despite the same color density, but a so-called metamerism. While the printed images look identical, for example, to artificial light, the color impression of one image differs in daylight, for example in the evening light, from the color impression of the other image. This is due to the fact that different remission curves of the viewed print images at a certain lighting can produce the same color impression since the human eye is unable to receive each wavelength individually. Rather, the eye has three color vision areas of different spectral sensitivity. The hue summarily perceived by the observer results from a superposition of the light components falling into the eye according to the remission curve and the respective sensitivity of the three color vision areas of the eye. However, the actual difference in color of metameric printed images becomes visible when viewed under a light of different spectral composition. The conventional calibration methods do not eliminate this effect.
  • US2004 / 0021724 A1 is considered to be the closest prior art to the subject-matter of claim 1 and discloses a method of calibrating an ink-jet printer having a printhead comprising a plurality of ink ejection nozzles controllable by a control signal, wherein a plurality of timers are timed for printing by the inkjet printer and using the printed calibration grid values of the measuring parameter "color density" characterizing the respective inking are determined, and the ink ejection quantity per pixel is calibrated to a predetermined standard value by using the determined values by adapting the control signal.
  • the invention has for its object to provide an alternative method for calibrating an inkjet printer, so that a desired print image can be printed as reproducibly as possible and without the occurrence of metamerism, regardless of the day form of the printer.
  • the object of a method is solved for an ink jet printer having a printhead comprising a number of ink ejection nozzles controllable by a control signal, by a method of calibration, wherein a single predetermined calibration grid is promptly printed by the ink jet printer for one color in which, based on the printed calibration grid, the value of a measurement parameter averaging over the entire print image is determined, and wherein the ink ejection quantity per pixel is calibrated to a predetermined standard value by adjusting the determined value of the measurement parameter by adjusting the control signals.
  • the invention is based on the consideration that the undesired metamerism is a consequence of the change of the image dot matrix for calibration of the color density.
  • the invention recognizes that the ambient parameters influencing the daily form of an ink-jet printer decisively determine the quantity of ink produced per pixel or per ink ejection.
  • the invention recognizes the surprising possibility that By adjusting the control signal, the ink discharge amount can be calibrated. Namely, if the control parameters for ejecting an ink drop are varied, the ejected amount of ink will also vary. However, if the ink ejection is calibrated to an ink ejection amount per pixel, then a reproducible, substantially metamerism-free print image can be achieved because the pixel dot pattern is not changed to adjust the color density.
  • the specified method has the further significant advantage that the calibration digital template no longer has to be laboriously adapted, regardless of the form of the day or the type of printer before it is sent to the printer. Because an adjustment of the control signal, the ink ejection quantity per pixel is calibrated so that always printed while maintaining the given by the digital artwork pixel screen with repeatable consistent image quality. By calibrating the ink ejection amount, in particular, the size of the pixels is kept substantially constant, regardless of external factors. The printed images are no longer different, because with the same pixel pattern, the same color order is always generated by a device-side setting change.
  • a defined calibration grid is first printed for a color, and the value of a measurement parameter characterizing the inking is determined on the basis of the printed calibration grid.
  • a measurement parameter can be, for example, the size, the thickness or the mass of a printed pixel, with averaging over the entire printed image.
  • Such a measurement parameter is detected, for example, by determining the thickness or weight difference between the unprinted and the printed base.
  • the application of paint can also be detected optically by determining the reflection, transmission or remission values. In particular, it makes sense to detect a color density optically as a measurement parameter by means of a so-called densitometer which detects the remission of the printed image, ie the diffuse reflection of the ambient light.
  • each measurement parameter is suitable insofar as it has a dependency on the quantity of ink produced during ink ejection, which ultimately results in the shape, size or thickness of the pixel.
  • the detected value for the selected measurement parameter it is possible to calibrate the ink discharge amount per pixel.
  • a uniform print image or a uniform pixel pressure is achieved.
  • An adaptation of the pixel grid is no longer necessary.
  • the same digital master can be used without adjustment by calibration software. The result is always the desired uniform print image. Even variations in ink quality are compensated by the specified calibration procedure.
  • Another advantage over known calibration methods is the fact that to determine the ink ejection quantity or for calibration, the pressure of a single calibration grid for one color is sufficient. In the case of several primary colors, such as the four primary colors cyan, magenta, yellow and black in four-color printing, where the inks of the primary colors have different chemical or physical properties, the printing of a calibration grid is required for each color. It is not necessary to determine a calibration curve by detecting the printing result with a plurality of calibration screens of different resolution.
  • the ink ejection amount is calibrated by adjusting the measurement parameter to a predetermined standard value. This can be done, for example, by changing the control signal, printing it again with a changed control signal and measuring it again, the method being repeated until the desired result has been reached. From this method, empirical values can also be derived, which are used in a renewed calibration for an automated adaptation of the control signal.
  • the determined value of the measurement parameter is advantageously compared with a predetermined comparison value and depending on the result calibrated the ink ejection amount per pixel. In other words, it calibrates to a defined reference point.
  • An absolute value of the measurement parameter does not matter in this respect.
  • the predetermined comparison value relates, for example, to a general or device-specific normalized ink discharge quantity or to an ink discharge quantity of the inkjet printer under defined normal conditions with regard to the environmental parameters. It is also possible to determine the comparison value from a number of values of the measurement parameter measured in advance of the calibration, for example by means of an averaging.
  • a color density is determined as the color parameter characterizing measurement parameter.
  • the already mentioned color density provides a measure of the brightness or of the darkness of a printed surface, especially in printing technology.
  • the color density is thus linked to the proportion of the printed area on the substrate. Therefore, a reliable measure of the characterization of the ink application can be determined from the value of the color density determined on the printed calibration grid.
  • the color density is derived from the degree of remission.
  • the remission degree indicates the proportion of incident light that is reflected by the surface or printed image.
  • the remission degree of an ideal white area is assumed to be one.
  • the color density is formed in particular as a decadic logarithm from the reciprocal of the remission, resulting in a value of zero in the case of the ideal white area for the color density.
  • the logarithmic relationship is chosen in particular to take account of the logarithmic brightness perception of the human eye. If one tenth of the light is reflected, the color density has the value 1.
  • the value of the color density for each primary color is preferably determined separately using a printed calibration grid.
  • Color density is a common measurement parameter in printing technology. In this respect, it is possible to fall back on known measuring methods when determining the corresponding values of the color density.
  • the value of the color density is expediently determined by means of an optical measurement. This can be based on proven measuring technology, such as a densitometer or a spectrophotometer.
  • Ink jet printers are available in various embodiments.
  • the ink droplets are expelled by the local production of a vapor bubble.
  • inkjet printers are known in which the ink droplets are ejected by a pressure-valve technique.
  • the amount of ink ejected per ink droplet can be influenced by an adaptation of the control signal.
  • the or each ink ejection nozzle includes a piezoactuator that is driven by the control signal to eject ink.
  • ink ejection is achieved by the corresponding ink ejection nozzle, in particular via a pressure surge.
  • the ink is usually conveyed from an associated ink chamber.
  • the piezoactuator is excited to move, which abruptly reduces the volume in the ink channel associated with the respective ink ejection nozzle.
  • the resulting overpressure then throws an ink drop out of the nozzle.
  • the piezoactuator may be associated with the ink chamber or the ink channel. In particular, it can itself be part of the wall of the ink channel.
  • a pulse signal is used as the control signal.
  • a pulse signal is a signal defined by the magnitude and duration of the pulses and by their chronological sequence.
  • An impulse of ink is generated per impulse.
  • the pulse signal can basically be both a mechanical and an electrical signal.
  • the pulse signal is expediently given by a series of voltage pulses, each voltage pulse causing the piezoactuator to rapidly move to eject the ink drop.
  • the height and / or duration of the pulses is adjusted to calibrate the ink ejection amount.
  • the ink ejection nozzle is given an adjustment period and an adjustment speed for ejecting the ink drop.
  • the ink discharge amount can be regulated or adjusted by adjusting the amplitude or the height and / or the duration of the pulse. Basically, with an increase in amplitude, a larger amount of ink per drop will be expelled. Over the duration of the pulse, it is possible to influence the vibration behavior of the ink located in the ink channel. In particular, the vibration behavior affects the meniscus of the ink surface that is at the exit, which in turn alters the amount of ink ejected per drop.
  • an extension of the pulse duration within a certain range leads to an increase in the amount of ink per drop.
  • the pulse signal may be modulated in a stepwise manner.
  • an intermediate level is introduced between the high signal level and the low signal level of a pulse.
  • the amount of ink ejected per drop can also be adjusted.
  • the control signal is adapted according to a table.
  • the table entries can be based on empirical empirical values that were collected and collected in the course of several printing processes.
  • the table entries can also be self-learning derived from failed attempts or successful attempts.
  • the table entries can also be adapted to changing circumstances caused by wear or aging of the inkjet printer.
  • the assignment of defined adjustments of the control signal to determined values of the measuring parameter takes place via the table, so that a simple and rapid adaptation of the control parameters can take place. It can be provided that the changed control parameters are directly specified. Alternatively, it can also be provided that change values for adjusting the control signal are specified by the table entries. In particular, the table is stored in a nonvolatile memory of the printer, so that the calibration can also be carried out automatically after the determined value of the measurement parameter has been entered.
  • control signal is adjusted on the basis of the determined value of the measurement parameter by means of a functional relationship.
  • the control signal or the control signal describing control parameters is directly correlated with the measurement parameter.
  • the corresponding functional relationship is for example determined theoretically or derived empirically from measured values.
  • an ink chamber of the inkjet printer is subjected to negative pressure and adjusted by means of the control signal, the negative pressure.
  • an adjustable negative pressure in the ink chamber is used to calibrate the ink ejection amount per pixel alone or in addition.
  • the meniscus of the ink which adjusts in the ink ejection nozzles, is influenced, whereby a relation to the amount of ink ejection per pixel is immediately apparent.
  • Decisive here is the difference between the pressure in the ink chamber and the ambient pressure. Lowering the negative pressure generally results in a reduced output per pixel.
  • the negative pressure in the ink chamber can be adjusted for example by means of a controllable fan.
  • the adjustable range of negative pressure in the ink chamber from ambient pressure is preferably between minus ten and minus fifty millimeters of water.
  • the amount of ink ejection per pixel can advantageously be calibrated to a predetermined standard value by tempering an ink of the inkjet printer, the ink temperature being set by means of the control signal.
  • a dependence of the viscosity of the ink on the ink temperature is assumed.
  • many inks exhibit such an ink-temperature-dependent viscosity, which may be inferred from corresponding manufacturers' datasheets.
  • the ink discharge amount per pixel increases with increasing viscosity of the ink. The reason for this is the fact that due to the increased viscosity, the tear-off time for the ink droplet is delayed.
  • a temperature control of the ink can thus also be used to calibrate the amount of ink ejection per pixel.
  • Suitable temperature control devices may be heating or cooling devices associated with either the ink chamber, the ink supply lines or the ink ejection nozzle.
  • the tempering device for example suitable tempering lines
  • the walls of the ink-carrying containers themselves can be designed to be temperature-controllable.
  • the second object is achieved by a printed product which is printed by a calibrated according to the method described above ink jet printer.
  • Fig. 1 shows an inkjet printer 2 and a substrate to be printed 4, which is guided on a roller 6.
  • the ink jet printer 2 comprises a block-type printing head 8 with a number of ink chambers not visible here and a number of ink ejection nozzles 10.
  • the ink chambers store inks of different colors, in particular the primary colors black, cyan, magenta and yellow.
  • the print head 8 is mounted on a carriage 12, which is movable in a direction of displacement 14 along two guide rods 16. Further, the ink jet printer 2 comprises a control unit 11 for driving the ink ejection nozzles 10.
  • the roller 6, on which the pad 4 given here as a sheet of paper is guided, is rotatable about its axis of rotation in a direction of rotation 20.
  • the print head 8 of the ink jet printer 2 and the base 4 are moved relative to each other. This means, in particular, that the base 4 is transported by means of a rotation of the roller 6 in a direction transverse to the direction of displacement 14 of the carriage 12 on the print head 8. Simultaneously, the print head 8 is moved by means of the carriage 12 along the direction of displacement 14 back and forth.
  • the control unit 11 controls the ink ejection nozzles 10 to eject ink in accordance with the specifications of a dot matrix screen.
  • the ink ejection nozzles 10 are for this purpose individually controllable by the control unit 11, wherein the driven ink ejection nozzles 10 each eject an ink drop onto the carrier element 4.
  • the openings of the ink ejection nozzles 10 respectively point in the direction of the base 4.
  • An ejected ink droplet substantially results in a printed pixel on the substrate 4. Due to the relative movement of the substrate 4 and the print head 8 relative to each other, the ejection of Ink drops in a distribution of the printed pixels on the base 4, which corresponds to the predetermined by a digital artwork pixel grid. The number of pixels, the pixel density and the color of the pixels determine the optically perceptible print image by a viewer.
  • the printed base 4 represents a desired printed product 22.
  • the image data given by a digital original, which are the basis of the pixel matrix, are read in by the control unit 11 during or before the printing process.
  • the digital template is in the form of an electronic storage file of a particular format.
  • Fig. 2 schematically shows a print head 8 in a cross-sectional view.
  • a number of ink chambers 24 are shown by way of example.
  • the exemplified ink chambers 24 each store ink of a different color, eg cyan, black, yellow.
  • one ink ejection nozzle 10 arranged on the respective ink chambers 24 is visible.
  • Each of the ink ejection nozzles 10 further includes an ink channel 25 whose walls are formed by piezoactuators 26.
  • the wall is curved inwards, so that an overpressure in the respective ink channel 25 is generated.
  • ejection of ink from the driven ink ejection nozzle 10 occurs Fig. 2 this control is visible at the middle of the ink ejection nozzles 10.
  • the walls of the ink channel 25 are curved inwards.
  • the ejected ink drop 28 is drawn.
  • an electrical voltage in the form of a voltage pulse is applied to the piezoactuators 26 of an ink ejection nozzle 10 via the control unit 11.
  • the voltage applied across the voltage pulse causes a deformation of the piezo actuators 26, which leads to a curvature of the wall of the ink channel 25 inwardly, thus there to a reduction of the volume and thus to a pulse-like pressure build-up.
  • the ejected ink drop 28 includes a defined amount of ink ejection 29 that generates a pixel when it hits the substrate to be printed.
  • the volume of the ink drop 28 and thus the ink ejection amount 29 per pixel, in particular via an adjustment of the height and the duration of the voltage applied to the piezo actuators 26 voltage pulse from the control unit 11 is set to a calibrated value.
  • the volume of the ink drop 28 discharged from the or each ink ejection nozzle 10 of the inkjet printer 2 is affected by external factors such as air pressure, temperature or humidity.
  • Such a variation of the ink drop volume results in a corresponding variation in the size and thickness of the printed pixels.
  • This has the consequence that the Print image of a dot screen printed at different times appears different to a viewer in optical perception depending on whether the ink discharge amount 29 is lower or higher.
  • the ink-jet printer 2 is calibrated in terms of the ink ejection amount 29 per pixel given by the volume of the ink droplet 28 in a timely manner to the intended printing operation. This procedure is in Fig. 3 shown.
  • a first step A of the calibration process the inkjet printer is first driven with a predetermined calibration grid to print out a defined calibration print image.
  • the Kalibrierdruckterrorism is frequency modulated, i. by a temporal modulation of the control pulses during the movement of the print original with respect to the print head generated. Basically, a single calibration pressure of one color is sufficient to capture the daily form of the printer.
  • the inks of different primary colors vary in their material properties on the one hand and from different batches to another, it is advisable to create a separate calibration print image for each base color. In this way, also varying material properties of the inks are taken into account.
  • next step B the calibration print image is measured.
  • the color density of the printout is measured optically by means of a densitometer.
  • the value of the color density is determined, which is a measure of the color applied.
  • the remission reflected by the printed sheet with a given standard light is evaluated and from this the value of the color density is determined as already indicated.
  • the measured value of the color density is compared with the expected value of the color density, which should ideally result or which resulted from normalized environmental parameters of the inkjet printer. From the difference of the measured value and the expected value of the color density, a deviation is then determined.
  • step D adjustments of the control signal are interrogated by means of a value table T based on empirical values, in which variation values of the measured color density are assigned change values for the control signal.
  • the table values may have been determined directly by previous measurement series, whereby the effects of defined variations of the control signal on the color density have been investigated empirically.
  • the table values can also be derived from previous calibration procedures.
  • the table values can also be adapted to aging processes of the printer over the course of time since the same changes in the control signal can possibly have changed effects as a result.
  • a further step E the queried changes are imposed on the control signal of the color ejection nozzles.
  • the printer again generates a color order that corresponds to standard conditions. In other words, the ink ejection amount per pixel and the volume of an ejected ink droplet are calibrated, respectively.
  • a step F the result of the calibration can be checked by a test printout with changed control signals according to step A and renewed measurement of the color density. Depending on the result, steps A to F can then be repeated until the desired result is achieved.
  • the print image is generated in step G according to a digital template.
  • a printed product meets the strict requirements for reproducibility in the case of a commercial application, and in particular in the case of decorative prints on mass-produced goods.
  • the specified calibration method does not result in a computationally required reformatting of the print data before it is sent to the printer, as is the case with conventional calibration methods.
  • the print screen is modulated with respect to the original in order to achieve this to achieve the desired result in spite of changed environmental parameters, the control signals are adapted in the present case with unchanged printing grid. In this respect, the technical condition and the type of the printer and not the print file is adjusted.
  • Fig. 4 is a diagram in a section of a pulse signal 50, a voltage pulse 52 for controlling an actuated by a piezoelectric actuator ink jet printer.
  • the pulse signal 50 has substantially two levels, namely a low level L and a high level H.
  • a low level L When the high level L is applied to the piezoactuator or to the corresponding ink ejection nozzle, a compression of the ink channel causes the ejection of an ink droplet of a given volume.
  • the high level H is applied to the piezoactuator or to the corresponding ink ejection nozzle, a compression of the ink channel causes the ejection of an ink droplet of a given volume.
  • the shape of the voltage pulse 52 about the height 54 of the high level H above the low level L and the duration 56 of the high signal, so the shape of the voltage pulse 52, an adjustment of the volume of the ejected ink drop is possible.
  • a calibration of the ink ejection amount per pixel according to the method described above is done in particular by means of an adjustment of the height 54 and the time duration 56 of the voltage pulse 52.
  • substantially the height 54 of the applied voltage pulse 52 is raised.
  • the time duration 56 of the voltage pulse 52 applied to the piezoactuator By altering the time duration 56 of the voltage pulse 52 applied to the piezoactuator, the oscillation behavior of the meniscus of the ink, which adjusts itself at the mouth of the ink channel, can be changed, so that the drop volume of the ejected ink droplet can likewise be altered.
  • the new duration 56 to be set for a given difference in the measured color density is based on empirical values obtained with the respective printer.

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Abstract

L'invention concerne un procédé d'étalonnage d'une imprimante à jet d'encre (2) équipée d'une tête d'impression (8) comprenant une pluralité de buses d'éjection d'encre (10) pouvant être commandées par un signal de commande. Selon ce procédé, une grille d'étalonnage (42) prédéfinie est imprimée au moyen de l'imprimante à jet d'encre (2) peu de temps avant le processus d'impression prévu, la grille d'étalonnage (42) imprimée est utilisée pour déterminer la valeur d'un paramètre de mesure caractéristique de l'application d'encre, puis la valeur déterminée pour ce paramètre de mesure est utilisée pour étalonner la quantité d'encre éjectée (29) par pixel par adaptation du signal de commande. L'invention concerne en outre un produit d'impression (22) imprimé au moyen d'une imprimante à jet d'encre (2) étalonnée par ce procédé.

Claims (15)

  1. Une méthode pour le calibrage d'une imprimante à jet d'encre (2) ayant une tête d'impression (8) comprenant un nombre d'injecteurs d'éjections d'encre (10) qui peuvent être actionnés par moyen d'un signal de commande, à temps plein vers l'opération d'impression envisagée
    - une seule trame de calibrage prédéfinie étant imprimée par moyen de l'imprimante à jet d'encre (2) pour une couleur donnée,
    - la valeur d'un paramètre de mesure, caractérisant l'encrage et étant moyenné sur l'image imprimée complète, étant déterminée en base de la trame de calibrage imprimée et
    - la quantité d'éjection d'encre (29) par pixel étant calibrée sur une valeur normalisée prédéfinie en adaptant le signal de commande basé sur la valeur déterminée du paramètre de mesure.
  2. La méthode selon la revendication 1,
    - la valeur déterminée du paramètre du mesure étant comparée avec une valeur de comparaison prédéfinie et
    - la quantité d'éjection d'encre (29) par pixel étant calibrée en fonction du résultat de la comparaison.
  3. La méthode selon la revendication 1 ou 2,
    une densité chromatique étant utilisée comme paramètre de mesure qui caractérise l'encrage.
  4. La méthode selon la revendication 3,
    la valeur de la densité chromatique étant déterminée par le moyen d'une mesure d'optique.
  5. La méthode selon l'une des revendications précédentes,
    l'injecteur d'éjection d'encre ou chaque des injecteurs d'éjection d'encre (10) comprenant un actionneur piézoélectrique (26), qui est actionné par moyen du signal de commande pour l'éjection d'encre.
  6. La méthode selon l'une des revendications précédentes,
    un signal d'impulsion (50) étant utilisé comme signal de commande.
  7. La méthode selon la revendication 6,
    le niveau (54) et/ou la durée (56) des impulsions étant adaptée pour calibrer la quantité d'éjection d'encre (29).
  8. La méthode selon la revendication 6 ou 7,
    les impulsions étant modulées de manière étagée pour calibrer la quantité d'éjection d'encre (29).
  9. La méthode selon l'une des revendications 6 à 8,
    une séquence d'impulsions de tension (52) étant utilisé comme signal d'impulsion (50).
  10. La méthode selon l'une des revendications précédentes,
    en base de la valeur déterminée du paramètre de mesure le signal de commande étant adapté selon un tableau T.
  11. La méthode selon la revendication 10,
    les inscriptions sur le tableau étant adaptées compte tenu de valeurs empiriques.
  12. La méthode selon l'une des revendications 1 à 9,
    en base de la valeur déterminée du paramètre de mesure le signal de commande étant adapté par moyen d'une relation fonctionnelle.
  13. La méthode selon l'une des revendications précédentes,
    un réservoir d'encre (24) de l'imprimante à jet d'encre (2) étant pressurisé à dépression, la dépression étant reglée par moyen du signal de commande.
  14. La méthode selon l'une des revendications précédentes,
    une encre de l'imprimante à jet d'encre (2) étant temperée et la température de l'encre étant réglée par moyen du signal de commande.
  15. La méthode selon l'une des revendications précédantes,
    un algorithme d'auto-apprentissage étant utilisé pour adapter le signal de commande.
EP09745516A 2008-05-14 2009-05-05 Procédé d'étalonnage d'une imprimante à jet d'encre Not-in-force EP2279082B1 (fr)

Priority Applications (1)

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PL09745516T PL2279082T3 (pl) 2008-05-14 2009-05-05 Sposób kalibracji drukarki atramentowej

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DE102008023546A DE102008023546B4 (de) 2008-05-14 2008-05-14 Verfahren zur Kalibrierung eines Tintenstrahldruckers sowie Druckerzeugnis
PCT/EP2009/003196 WO2009138182A1 (fr) 2008-05-14 2009-05-05 Procédé d'étalonnage d'une imprimante à jet d'encre et produit d'impression

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EP2279082A1 EP2279082A1 (fr) 2011-02-02
EP2279082B1 true EP2279082B1 (fr) 2012-06-20

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US (1) US8393704B2 (fr)
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IL (1) IL209254A (fr)
PL (1) PL2279082T3 (fr)
PT (1) PT2279082E (fr)
RU (1) RU2519988C2 (fr)
WO (1) WO2009138182A1 (fr)

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DE102010060950B4 (de) * 2010-12-01 2015-01-22 Theodor Hymmen Verwaltungs Gmbh Verfahren zum Kalibrieren einer Druckvorrichtung
US9205691B1 (en) * 2014-12-04 2015-12-08 Xerox Corporation System for compensating for drop volume variation between inkjets in a three-dimensional object printer
JP6710116B2 (ja) * 2016-06-27 2020-06-17 理想科学工業株式会社 インクジェット印刷装置
EP3455079A4 (fr) * 2016-10-24 2019-12-25 Hewlett-Packard Development Company, L.P. Réglage de limites d'utilisation d'encre destinées à un système d'impression
WO2019177583A1 (fr) * 2018-03-13 2019-09-19 Hewlett-Packard Development Company, L.P. Étalonnage de système d'impression faisant appel à un dispositif d'impression de référence
JP7301517B2 (ja) * 2018-10-29 2023-07-03 キヤノン株式会社 画像処理装置及び画像処理方法
JP7206903B2 (ja) * 2018-12-27 2023-01-18 セイコーエプソン株式会社 液体吐出装置及び液体吐出装置の制御装置

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SG46626A1 (en) * 1990-04-27 1998-02-20 Canon Kk Recording apparatus for performing recording using recording head
US5434604A (en) * 1992-05-19 1995-07-18 Vutek Inc. Spray-painting system with automatic color calibration
JP2001047665A (ja) * 1999-05-28 2001-02-20 Canon Inc 画像処理方法、装置および記録媒体
ATE318714T1 (de) * 2001-11-06 2006-03-15 Canon Kk Tintenstrahldruckvorrichtung und korrekturverfahren für ein bild
US6726301B2 (en) * 2002-06-20 2004-04-27 Hewlett-Packard Development Company, L.P. Drop volume compensation at least substantially reflectance sensor illuminate invariant
US6905186B2 (en) * 2002-07-30 2005-06-14 Fuji Photo Film Co., Ltd. Image recording apparatus
US7101016B2 (en) * 2004-01-18 2006-09-05 Hewlett-Packard Company Adjustment of fluid-ejection energy to yield fluid drop masses having consistent ratio
US20060055720A1 (en) * 2004-09-10 2006-03-16 Olson Stephen T Method for intra-swath banding compensation
KR100850335B1 (ko) * 2005-03-04 2008-08-04 가부시키가이샤 리코 화상 형성 장치
JP4933128B2 (ja) * 2006-03-31 2012-05-16 富士フイルム株式会社 画像形成装置および打滴補正方法

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ES2390006T3 (es) 2012-11-05
CA2724039A1 (fr) 2009-11-19
DE102008023546A1 (de) 2009-11-19
AU2009248338A1 (en) 2009-11-19
CA2724039C (fr) 2015-11-24
WO2009138182A1 (fr) 2009-11-19
IL209254A0 (en) 2011-01-31
US20110122185A1 (en) 2011-05-26
RU2010150913A (ru) 2012-06-20
DK2279082T3 (da) 2012-09-17
PL2279082T3 (pl) 2012-11-30
EP2279082A1 (fr) 2011-02-02
US8393704B2 (en) 2013-03-12
RU2519988C2 (ru) 2014-06-20
DE102008023546B4 (de) 2012-03-15
IL209254A (en) 2015-05-31
PT2279082E (pt) 2012-08-31

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